{"id":1382,"date":"2015-11-17T10:31:27","date_gmt":"2015-11-17T02:31:27","guid":{"rendered":"http:\/\/nick.txtcc.com\/?p=1382"},"modified":"2017-09-22T15:43:53","modified_gmt":"2017-09-22T07:43:53","slug":"mongodb-%e5%89%af%e6%9c%ac%e9%9b%86%e7%9a%84%e5%8e%9f%e7%90%86%e3%80%81%e6%90%ad%e5%bb%ba%e3%80%81%e5%ba%94%e7%94%a8","status":"publish","type":"post","link":"https:\/\/nick.txtcc.com\/index.php\/db\/1382","title":{"rendered":"MongoDB \u526f\u672c\u96c6\u7684\u539f\u7406\u3001\u642d\u5efa\u3001\u5e94\u7528"},"content":{"rendered":"<p><strong>\u6982\u5ff5\uff1a<\/strong><\/p>\n<p>\u5728\u4e86\u89e3\u4e86<a href=\"http:\/\/www.cnblogs.com\/zhoujinyi\/p\/3554196.html\">\u8fd9\u7bc7\u6587\u7ae0<\/a>\u4e4b\u540e\uff0c\u53ef\u4ee5\u8fdb\u884c\u8be5\u7bc7\u6587\u7ae0\u7684\u8bf4\u660e\u548c\u6d4b\u8bd5\u3002MongoDB \u526f\u672c\u96c6\uff08Replica Set\uff09\u662f\u6709\u81ea\u52a8\u6545\u969c\u6062\u590d\u529f\u80fd\u7684\u4e3b\u4ece\u96c6\u7fa4\uff0c\u6709\u4e00\u4e2aPrimary\u8282\u70b9\u548c\u4e00\u4e2a\u6216\u591a\u4e2aSecondary\u8282\u70b9\u7ec4\u6210\u3002\u7c7b\u4f3c\u4e8eMySQL\u7684MMM\u67b6\u6784\u3002\u66f4\u591a\u5173\u4e8e\u526f\u672c\u96c6\u7684\u4ecb\u7ecd\u8bf7\u89c1<a href=\"http:\/\/docs.mongodb.org\/manual\/core\/replication-introduction\/\">\u5b98\u7f51<\/a>\u3002\u4e5f\u53ef\u4ee5\u5728google\u3001baidu\u4e0a\u67e5\u9605\u3002<\/p>\n<p><strong>\u526f\u672c\u96c6\u4e2d\u6570\u636e\u540c\u6b65\u8fc7\u7a0b<\/strong>\uff1a<strong>Primary\u8282\u70b9\u5199\u5165\u6570\u636e\uff0cSecondary\u901a\u8fc7\u8bfb\u53d6Primary\u7684oplog\u5f97\u5230\u590d\u5236\u4fe1\u606f\uff0c\u5f00\u59cb\u590d\u5236\u6570\u636e\u5e76\u4e14\u5c06\u590d\u5236\u4fe1\u606f\u5199\u5165\u5230\u81ea\u5df1\u7684oplog<\/strong>\u3002\u5982\u679c\u67d0\u4e2a\u64cd\u4f5c\u5931\u8d25\uff0c\u5219\u5907\u4efd\u8282\u70b9\u505c\u6b62\u4ece\u5f53\u524d\u6570\u636e\u6e90\u590d\u5236\u6570\u636e\u3002\u5982\u679c\u67d0\u4e2a\u5907\u4efd\u8282\u70b9\u7531\u4e8e\u67d0\u4e9b\u539f\u56e0\u6302\u6389\u4e86\uff0c\u5f53\u91cd\u65b0\u542f\u52a8\u540e\uff0c\u5c31\u4f1a\u81ea\u52a8\u4eceoplog\u7684\u6700\u540e\u4e00\u4e2a\u64cd\u4f5c\u5f00\u59cb\u540c\u6b65\uff0c\u540c\u6b65\u5b8c\u6210\u540e\uff0c\u5c06\u4fe1\u606f\u5199\u5165\u81ea\u5df1\u7684oplog\uff0c\u7531\u4e8e\u590d\u5236\u64cd\u4f5c\u662f\u5148\u590d\u5236\u6570\u636e\uff0c\u590d\u5236\u5b8c\u6210\u540e\u518d\u5199\u5165oplog\uff0c\u6709\u53ef\u80fd\u76f8\u540c\u7684\u64cd\u4f5c\u4f1a\u540c\u6b65\u4e24\u4efd\uff0c\u4e0d\u8fc7MongoDB\u5728\u8bbe\u8ba1\u4e4b\u521d\u5c31\u8003\u8651\u5230\u8fd9\u4e2a\u95ee\u9898\uff0c\u5c06oplog\u7684\u540c\u4e00\u4e2a\u64cd\u4f5c\u6267\u884c\u591a\u6b21\uff0c\u4e0e\u6267\u884c\u4e00\u6b21\u7684\u6548\u679c\u662f\u4e00\u6837\u7684\u3002<strong>\u7b80\u5355\u7684\u8bf4\u5c31\u662f\uff1a<\/strong><\/p>\n<p>\u5f53Primary\u8282\u70b9\u5b8c\u6210\u6570\u636e\u64cd\u4f5c\u540e\uff0cSecondary\u4f1a\u505a\u51fa\u4e00\u7cfb\u5217\u7684\u52a8\u4f5c\u4fdd\u8bc1\u6570\u636e\u7684\u540c\u6b65\uff1a\n1\uff1a\u68c0\u67e5\u81ea\u5df1local\u5e93\u7684oplog.rs\u96c6\u5408\u627e\u51fa\u6700\u8fd1\u7684\u65f6\u95f4\u6233\u3002\n2\uff1a\u68c0\u67e5Primary\u8282\u70b9local\u5e93oplog.rs\u96c6\u5408\uff0c\u627e\u51fa\u5927\u4e8e\u6b64\u65f6\u95f4\u6233\u7684\u8bb0\u5f55\u3002\n3\uff1a\u5c06\u627e\u5230\u7684\u8bb0\u5f55\u63d2\u5165\u5230\u81ea\u5df1\u7684oplog.rs\u96c6\u5408\u4e2d\uff0c\u5e76\u6267\u884c\u8fd9\u4e9b\u64cd\u4f5c\u3002<\/p>\n<p>\u526f\u672c\u96c6\u7684\u540c\u6b65\u548c\u4e3b\u4ece\u540c\u6b65\u4e00\u6837\uff0c\u90fd\u662f\u5f02\u6b65\u540c\u6b65\u7684\u8fc7\u7a0b\uff0c\u4e0d\u540c\u7684\u662f\u526f\u672c\u96c6\u6709\u4e2a\u81ea\u52a8\u6545\u969c\u8f6c\u79fb\u7684\u529f\u80fd\u3002\u5176\u539f\u7406\u662f\uff1aslave\u7aef\u4eceprimary\u7aef\u83b7\u53d6\u65e5\u5fd7\uff0c\u7136\u540e\u5728\u81ea\u5df1\u8eab\u4e0a\u5b8c\u5168\u987a\u5e8f\u7684\u6267\u884c\u65e5\u5fd7\u6240\u8bb0\u5f55\u7684\u5404\u79cd\u64cd\u4f5c\uff08\u8be5\u65e5\u5fd7\u662f\u4e0d\u8bb0\u5f55\u67e5\u8be2\u64cd\u4f5c\u7684\uff09\uff0c\u8fd9\u4e2a\u65e5\u5fd7\u5c31\u662flocal\u6570\u636e \u5e93\u4e2d\u7684oplog.rs\u8868\uff0c\u9ed8\u8ba4\u572864\u4f4d\u673a\u5668\u4e0a\u8fd9\u4e2a\u8868\u662f\u6bd4\u8f83\u5927\u7684\uff0c\u5360\u78c1\u76d8\u5927\u5c0f\u76845%\uff0coplog.rs\u7684\u5927\u5c0f\u53ef\u4ee5\u5728\u542f\u52a8\u53c2\u6570\u4e2d\u8bbe \u5b9a\uff1a&#8211;oplogSize 1000,\u5355\u4f4d\u662fM\u3002<\/p>\n<p>\u6ce8\u610f\uff1a\u5728\u526f\u672c\u96c6\u7684\u73af\u5883\u4e2d\uff0c\u8981\u662f\u6240\u6709\u7684Secondary\u90fd\u5b95\u673a\u4e86\uff0c\u53ea\u5269\u4e0bPrimary\u3002\u6700\u540ePrimary\u4f1a\u53d8\u6210Secondary\uff0c\u4e0d\u80fd\u63d0\u4f9b\u670d\u52a1\u3002<\/p>\n<p><strong>\u4e00\uff1a\u73af\u5883\u642d\u5efa<\/strong><\/p>\n<p><strong>1\uff1a\u51c6\u5907\u670d\u52a1\u5668<\/strong><\/p>\n<div class=\"cnblogs_code\">\n<pre>192.168.200.25\n\n192.168.200.245\n\n192.168.200.252<\/pre>\n<\/div>\n<p><strong>2\uff1a\u5b89\u88c5<\/strong><\/p>\n<div class=\"cnblogs_code\">\n<pre>http:\/\/www.cnblogs.com\/zhoujinyi\/archive\/2013\/06\/02\/3113868.html<\/pre>\n<\/div>\n<p><strong>3\uff1a\u4fee\u6539\u914d\u7f6e\uff0c\u53ea\u9700\u8981\u5f00\u542f\uff1areplSet \u53c2\u6570\u5373\u53ef\u3002\u683c\u5f0f\u4e3a\uff1a<\/strong><\/p>\n<div class=\"cnblogs_code\">\n<pre>192.168.200.252: --replSet = mmm\/192.168.200.245:27017  # mmm\u662f\u526f\u672c\u96c6\u7684\u540d\u79f0\uff0c192.168.200.25:27017 \u4e3a\u5b9e\u4f8b\u7684\u4f4d\u5b50\u3002\n\n192.168.200.245: --replSet = mmm\/192.168.200.252:27017\n\n192.168.200.25: --replSet = mmm\/192.168.200.252:27017,192.168.200.245:27017<\/pre>\n<\/div>\n<p><strong>4\uff1a\u542f\u52a8<\/strong><\/p>\n<p>\u542f\u52a8\u540e\u4f1a\u63d0\u793a\uff1a<\/p>\n<div class=\"cnblogs_code\">\n<pre>replSet info you may need to run replSetInitiate -- rs.initiate() in the shell -- if that is not already done<\/pre>\n<\/div>\n<p>\u8bf4\u660e\u9700\u8981\u8fdb\u884c\u521d\u59cb\u5316\u64cd\u4f5c\uff0c\u521d\u59cb\u5316\u64cd\u4f5c\u53ea\u80fd\u6267\u884c\u4e00\u6b21\u3002<\/p>\n<p><strong>5\uff1a\u521d\u59cb\u5316\u526f\u672c\u96c6<\/strong><\/p>\n<p>\u767b\u5165\u4efb\u610f\u4e00\u53f0\u673a\u5668\u7684MongoDB\u6267\u884c\uff1a\u56e0\u4e3a\u662f\u5168\u65b0\u7684\u526f\u672c\u96c6\u6240\u4ee5\u53ef\u4ee5\u4efb\u610f\u8fdb\u5165\u4e00\u53f0\u6267\u884c\uff1b\u8981\u662f\u6709\u4e00\u53f0\u6709\u6570\u636e\uff0c\u5219\u9700\u8981\u5728\u6709\u6570\u636e\u4e0a\u6267\u884c\uff1b\u8981\u591a\u53f0\u6709\u6570\u636e\u5219\u4e0d\u80fd\u521d\u59cb\u5316\u3002<\/p>\n<div class=\"cnblogs_code\">\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/nick.txtcc.com\/wp-content\/uploads\/remote_image\/2017\/09\/074352BbA.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"><\/a><\/span><\/div>\n<pre>zhoujy@zhoujy:~$ mongo --host=192.168.200.252\nMongoDB shell version: 2.4.6\nconnecting to: 192.168.200.252:27017\/test\n> <strong>rs.initiate<\/strong>({\"_id\":\"mmm\",\"members\":[\n... {\"_id\":1,\n... \"host\":\"192.168.200.252:27017\",\n... \"priority\":1\n... },\n... {\"_id\":2,\n... \"host\":\"192.168.200.245:27017\",\n... \"priority\":1\n... }\n... ]})\n{\n    \"info\" : \"Config now saved locally.  Should come online in about a minute.\",\n    \"ok\" : 1\n}\n######\n<strong>\"_id\": \u526f\u672c\u96c6\u7684\u540d\u79f0<\/strong>\n<strong>\"members\": \u526f\u672c\u96c6\u7684\u670d\u52a1\u5668\u5217\u8868<\/strong>\n<strong>\"_id\": \u670d\u52a1\u5668\u7684\u552f\u4e00ID<\/strong>\n<strong>\"host\": \u670d\u52a1\u5668\u4e3b\u673a<\/strong>\n<strong>\"priority\": \u662f\u4f18\u5148\u7ea7\uff0c\u9ed8\u8ba4\u4e3a1\uff0c\u4f18\u5148\u7ea70\u4e3a\u88ab\u52a8\u8282\u70b9\uff0c\u4e0d\u80fd\u6210\u4e3a\u6d3b\u8dc3\u8282\u70b9\u3002\u4f18\u5148\u7ea7\u4e0d\u4f4d0\u5219\u6309\u7167\u6709\u5927\u5230\u5c0f\u9009\u51fa\u6d3b\u8dc3\u8282\u70b9\u3002\n\"arbiterOnly\": \u4ef2\u88c1\u8282\u70b9\uff0c\u53ea\u53c2\u4e0e\u6295\u7968\uff0c\u4e0d\u63a5\u6536\u6570\u636e\uff0c\u4e5f\u4e0d\u80fd\u6210\u4e3a\u6d3b\u8dc3\u8282\u70b9\u3002\n<\/strong>> rs.status()\n{\n    \"set\" : \"mmm\",\n    \"date\" : ISODate(\"2014-02-18T04:03:53Z\"),\n    \"myState\" : 1,\n    \"members\" : [\n        {\n            \"_id\" : 1,\n            \"name\" : \"192.168.200.252:27017\",\n            \"health\" : 1,\n            \"state\" : 1,\n            \"stateStr\" : \"PRIMARY\",\n            \"uptime\" : 76,\n            \"optime\" : Timestamp(1392696191, 1),\n            \"optimeDate\" : ISODate(\"2014-02-18T04:03:11Z\"),\n            \"self\" : true\n        },\n        {\n            \"_id\" : 2,\n            \"name\" : \"192.168.200.245:27017\",\n            \"health\" : 1,\n            \"state\" : 2,\n            \"stateStr\" : \"SECONDARY\",\n            \"uptime\" : 35,\n            \"optime\" : Timestamp(1392696191, 1),\n            \"optimeDate\" : ISODate(\"2014-02-18T04:03:11Z\"),\n            \"lastHeartbeat\" : ISODate(\"2014-02-18T04:03:52Z\"),\n            \"lastHeartbeatRecv\" : ISODate(\"2014-02-18T04:03:53Z\"),\n            \"pingMs\" : 0,\n            \"syncingTo\" : \"192.168.200.252:27017\"\n        }\n    ],\n    \"ok\" : 1\n}<\/pre>\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/nick.txtcc.com\/wp-content\/uploads\/remote_image\/2017\/09\/074352BbA.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"><\/a><\/span><\/div>\n<\/div>\n<p><strong>6\uff1a\u65e5\u5fd7<\/strong><\/p>\n<p>\u67e5\u770b252\u4e0a\u7684\u65e5\u5fd7\uff1a<\/p>\n<div class=\"cnblogs_code\">\n<pre>Tue Feb 18 12:03:29.334 [rsMgr] replSet PRIMARY\n\u2026\u2026\u2026\u2026\n\u2026\u2026\u2026\u2026\nTue Feb 18 12:03:40.341 [rsHealthPoll] replSet member 192.168.200.245:27017 is now in state SECONDARY<\/pre>\n<\/div>\n<p>\u81f3\u6b64\uff0c\u6574\u4e2a\u526f\u672c\u96c6\u5df2\u7ecf\u642d\u5efa\u6210\u529f\u4e86\u3002<\/p>\n<p>\u4e0a\u9762\u7684\u7684\u526f\u672c\u96c6\u53ea\u67092\u53f0\u670d\u52a1\u5668\uff0c\u8fd8\u6709\u4e00\u53f0\u600e\u4e48\u6dfb\u52a0\uff1f\u9664\u4e86\u5728\u521d\u59cb\u5316\u7684\u65f6\u5019\u6dfb\u52a0\uff0c\u8fd8\u6709\u4ec0\u4e48\u65b9\u6cd5\u53ef\u4ee5\u540e\u671f\u589e\u5220\u8282\u70b9\uff1f<\/p>\n<p><strong>\u4e8c\uff1a\u7ef4\u62a4\u64cd\u4f5c<\/strong><\/p>\n<p><strong>1\uff1a\u589e\u5220\u8282\u70b9\u3002<\/strong><\/p>\n<p>\u628a25\u670d\u52a1\u52a0\u5165\u5230\u526f\u672c\u96c6\u4e2d\uff1a<\/p>\n<p><strong>rs.add(&#8220;192.168.200.25:27017&#8221;)<\/strong><\/p>\n<div class=\"cnblogs_code\">\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/nick.txtcc.com\/wp-content\/uploads\/remote_image\/2017\/09\/074352BbA.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"><\/a><\/span><\/div>\n<pre>mmm:PRIMARY> rs.add(\"192.168.200.25:27017\")\n{ \"ok\" : 1 }\nmmm:PRIMARY> rs.status()\n{\n    \"set\" : \"mmm\",\n    \"date\" : ISODate(\"2014-02-18T04:53:00Z\"),\n    \"myState\" : 1,\n    \"members\" : [\n        {\n            \"_id\" : 1,\n            \"name\" : \"192.168.200.252:27017\",\n            \"health\" : 1,\n            \"state\" : 1,\n            \"stateStr\" : \"PRIMARY\",\n            \"uptime\" : 3023,\n            \"optime\" : Timestamp(1392699177, 1),\n            \"optimeDate\" : ISODate(\"2014-02-18T04:52:57Z\"),\n            \"self\" : true\n        },\n        {\n            \"_id\" : 2,\n            \"name\" : \"192.168.200.245:27017\",\n            \"health\" : 1,\n            \"state\" : 2,\n            \"stateStr\" : \"SECONDARY\",\n            \"uptime\" : 2982,\n            \"optime\" : Timestamp(1392699177, 1),\n            \"optimeDate\" : ISODate(\"2014-02-18T04:52:57Z\"),\n            \"lastHeartbeat\" : ISODate(\"2014-02-18T04:52:59Z\"),\n            \"lastHeartbeatRecv\" : ISODate(\"2014-02-18T04:53:00Z\"),\n            \"pingMs\" : 0,\n            \"syncingTo\" : \"192.168.200.252:27017\"\n        },\n        {\n            \"_id\" : 3,\n            \"name\" : \"192.168.200.25:27017\",\n            \"health\" : 1,\n            \"state\" : 6,\n            \"stateStr\" : \"UNKNOWN\",             #\u7b49\u4e00\u4f1a\u5c31\u53d8\u6210\u4e86 SECONDARY \n            \"uptime\" : 3,\n            \"optime\" : Timestamp(0, 0),\n            \"optimeDate\" : ISODate(\"1970-01-01T00:00:00Z\"),\n            \"lastHeartbeat\" : ISODate(\"2014-02-18T04:52:59Z\"),\n            \"lastHeartbeatRecv\" : ISODate(\"1970-01-01T00:00:00Z\"),\n            \"pingMs\" : 0,\n            \"lastHeartbeatMessage\" : \"still initializing\"\n        }\n    ],\n    \"ok\" : 1\n}<\/pre>\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/nick.txtcc.com\/wp-content\/uploads\/remote_image\/2017\/09\/074352BbA.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"><\/a><\/span><\/div>\n<\/div>\n<p>\u628a25\u670d\u52a1\u4ece\u526f\u672c\u96c6\u4e2d\u5220\u9664\uff1a<\/p>\n<p><strong>rs.remove(&#8220;192.168.200.25:27017&#8221;)<\/strong><\/p>\n<div class=\"cnblogs_code\">\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/nick.txtcc.com\/wp-content\/uploads\/remote_image\/2017\/09\/074352BbA.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"><\/a><\/span><\/div>\n<pre>mmm:PRIMARY> rs.remove(\"192.168.200.25:27017\")\nTue Feb 18 13:01:09.298 DBClientCursor::init call() failed\nTue Feb 18 13:01:09.299 Error: error doing query: failed at src\/mongo\/shell\/query.js:78\nTue Feb 18 13:01:09.300 trying reconnect to 192.168.200.252:27017\nTue Feb 18 13:01:09.301 reconnect 192.168.200.252:27017 ok\nmmm:PRIMARY> rs.status()\n{\n    \"set\" : \"mmm\",\n    \"date\" : ISODate(\"2014-02-18T05:01:19Z\"),\n    \"myState\" : 1,\n    \"members\" : [\n        {\n            \"_id\" : 1,\n            \"name\" : \"192.168.200.252:27017\",\n            \"health\" : 1,\n            \"state\" : 1,\n            \"stateStr\" : \"PRIMARY\",\n            \"uptime\" : 3522,\n            \"optime\" : Timestamp(1392699669, 1),\n            \"optimeDate\" : ISODate(\"2014-02-18T05:01:09Z\"),\n            \"self\" : true\n        },\n        {\n            \"_id\" : 2,\n            \"name\" : \"192.168.200.245:27017\",\n            \"health\" : 1,\n            \"state\" : 2,\n            \"stateStr\" : \"SECONDARY\",\n            \"uptime\" : 10,\n            \"optime\" : Timestamp(1392699669, 1),\n            \"optimeDate\" : ISODate(\"2014-02-18T05:01:09Z\"),\n            \"lastHeartbeat\" : ISODate(\"2014-02-18T05:01:19Z\"),\n            \"lastHeartbeatRecv\" : ISODate(\"2014-02-18T05:01:18Z\"),\n            \"pingMs\" : 0,\n            \"lastHeartbeatMessage\" : \"syncing to: 192.168.200.252:27017\",\n            \"syncingTo\" : \"192.168.200.252:27017\"\n        }\n    ],\n    \"ok\" : 1\n}<\/pre>\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/nick.txtcc.com\/wp-content\/uploads\/remote_image\/2017\/09\/074352BbA.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"><\/a><\/span><\/div>\n<\/div>\n<p>192.168.200.25 \u7684\u8282\u70b9\u5df2\u7ecf\u88ab\u79fb\u9664\u3002<\/p>\n<p><strong>2\uff1a\u67e5\u770b\u590d\u5236\u7684\u60c5\u51b5<\/strong><\/p>\n<p><strong>db.printSlaveReplicationInfo()<\/strong><\/p>\n<div class=\"cnblogs_code\">\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/nick.txtcc.com\/wp-content\/uploads\/remote_image\/2017\/09\/074352BbA.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"><\/a><\/span><\/div>\n<pre>mmm:PRIMARY> db.printSlaveReplicationInfo()\nsource:   192.168.200.245:27017\n     syncedTo: Tue Feb 18 2014 13:02:35 GMT+0800 (CST)\n         = 145 secs ago (0.04hrs)\nsource:   192.168.200.25:27017\n     syncedTo: Tue Feb 18 2014 13:02:35 GMT+0800 (CST)\n         = 145 secs ago (0.04hrs)<\/pre>\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/nick.txtcc.com\/wp-content\/uploads\/remote_image\/2017\/09\/074352BbA.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"><\/a><\/span><\/div>\n<\/div>\n<p>source\uff1a\u4ece\u5e93\u7684ip\u548c\u7aef\u53e3\u3002<\/p>\n<p>syncedTo\uff1a\u76ee\u524d\u7684\u540c\u6b65\u60c5\u51b5\uff0c\u4ee5\u53ca\u6700\u540e\u4e00\u6b21\u540c\u6b65\u7684\u65f6\u95f4\u3002<\/p>\n<p>\u4ece\u4e0a\u9762\u53ef\u4ee5\u770b\u51fa\uff0c\u5728\u6570\u636e\u5e93\u5185\u5bb9\u4e0d\u53d8\u7684\u60c5\u51b5\u4e0b\u4ed6\u662f\u4e0d\u540c\u6b65\u7684\uff0c\u6570\u636e\u5e93\u53d8\u52a8\u5c31\u4f1a\u9a6c\u4e0a\u540c\u6b65\u3002<\/p>\n<p><strong>3\uff1a\u67e5\u770b\u526f\u672c\u96c6\u7684\u72b6\u6001\n<\/strong><\/p>\n<p><strong>rs.status()<\/strong><\/p>\n<div class=\"cnblogs_code\">\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/nick.txtcc.com\/wp-content\/uploads\/remote_image\/2017\/09\/074352BbA.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"><\/a><\/span><\/div>\n<pre>mmm:PRIMARY> rs.status()\n{\n    \"set\" : \"mmm\",\n    \"date\" : ISODate(\"2014-02-18T05:12:28Z\"),\n    \"myState\" : 1,\n    \"members\" : [\n        {\n            \"_id\" : 1,\n            \"name\" : \"192.168.200.252:27017\",\n            \"health\" : 1,\n            \"state\" : 1,\n            \"stateStr\" : \"PRIMARY\",\n            \"uptime\" : 4191,\n            \"optime\" : Timestamp(1392699755, 1),\n            \"optimeDate\" : ISODate(\"2014-02-18T05:02:35Z\"),\n            \"self\" : true\n        },\n        {\n            \"_id\" : 2,\n            \"name\" : \"192.168.200.245:27017\",\n            \"health\" : 1,\n            \"state\" : 2,\n            \"stateStr\" : \"SECONDARY\",\n            \"uptime\" : 679,\n            \"optime\" : Timestamp(1392699755, 1),\n            \"optimeDate\" : ISODate(\"2014-02-18T05:02:35Z\"),\n            \"lastHeartbeat\" : ISODate(\"2014-02-18T05:12:27Z\"),\n            \"lastHeartbeatRecv\" : ISODate(\"2014-02-18T05:12:27Z\"),\n            \"pingMs\" : 0,\n            \"syncingTo\" : \"192.168.200.252:27017\"\n        },\n        {\n            \"_id\" : 3,\n            \"name\" : \"192.168.200.25:27017\",\n            \"health\" : 1,\n            \"state\" : 2,\n            \"stateStr\" : \"SECONDARY\",\n            \"uptime\" : 593,\n            \"optime\" : Timestamp(1392699755, 1),\n            \"optimeDate\" : ISODate(\"2014-02-18T05:02:35Z\"),\n            \"lastHeartbeat\" : ISODate(\"2014-02-18T05:12:28Z\"),\n            \"lastHeartbeatRecv\" : ISODate(\"2014-02-18T05:12:28Z\"),\n            \"pingMs\" : 0,\n            \"syncingTo\" : \"192.168.200.252:27017\"\n        }\n    ],\n    \"ok\" : 1\n}<\/pre>\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/nick.txtcc.com\/wp-content\/uploads\/remote_image\/2017\/09\/074352BbA.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"><\/a><\/span><\/div>\n<\/div>\n<p><strong>4:\u526f\u672c\u96c6\u7684\u914d\u7f6e<\/strong><\/p>\n<p><strong>rs.conf()\/rs.config()<\/strong><\/p>\n<div class=\"cnblogs_code\">\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/nick.txtcc.com\/wp-content\/uploads\/remote_image\/2017\/09\/074352BbA.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"><\/a><\/span><\/div>\n<pre>mmm:PRIMARY> rs.conf()\n{\n    \"_id\" : \"mmm\",\n    \"version\" : 4,\n    \"members\" : [\n        {\n            \"_id\" : 1,\n            \"host\" : \"192.168.200.252:27017\"\n        },\n        {\n            \"_id\" : 2,\n            \"host\" : \"192.168.200.245:27017\"\n        },\n        {\n            \"_id\" : 3,\n            \"host\" : \"192.168.200.25:27017\"\n        }\n    ]\n}<\/pre>\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/nick.txtcc.com\/wp-content\/uploads\/remote_image\/2017\/09\/074352BbA.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"><\/a><\/span><\/div>\n<\/div>\n<p><strong>5\uff1a\u64cd\u4f5cSecondary<\/strong><\/p>\n<p>\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0cSecondary\u662f\u4e0d\u63d0\u4f9b\u670d\u52a1\u7684\uff0c\u5373\u4e0d\u80fd\u8bfb\u548c\u5199\u3002\u4f1a\u63d0\u793a\uff1a\nerror: { &#8220;$err&#8221; : &#8220;not master and slaveOk=false&#8221;, &#8220;code&#8221; : 13435 }<\/p>\n<p>\u5728\u7279\u6b8a\u60c5\u51b5\u4e0b\u9700\u8981\u8bfb\u7684\u8bdd\u5219\u9700\u8981\uff1a\n<strong>rs.slaveOk() \uff0c\u53ea\u5bf9\u5f53\u524d\u8fde\u63a5\u6709\u6548\u3002\n<\/strong><\/p>\n<div class=\"cnblogs_code\">\n<pre>mmm:SECONDARY> db.test.find()\nerror: { \"$err\" : \"not master and slaveOk=false\", \"code\" : 13435 }\nmmm:SECONDARY> rs.slaveOk()\nmmm:SECONDARY> db.test.find()\n{ \"_id\" : ObjectId(\"5302edfa8c9151a5013b978e\"), \"a\" : 1 }<\/pre>\n<\/div>\n<p><strong>6\uff1a\u66f4\u65b0ing<\/strong><\/p>\n<p>&nbsp;<\/p>\n<p><strong>\u4e09\uff1a\u6d4b\u8bd5<\/strong><\/p>\n<p><strong>1\uff1a\u6d4b\u8bd5\u526f\u672c\u96c6\u6570\u636e\u590d\u5236\u529f\u80fd<\/strong><\/p>\n<p>\u5728Primary\uff08192.168.200.252:27017\uff09\u4e0a\u63d2\u5165\u6570\u636e\uff1a<\/p>\n<div class=\"cnblogs_code\">\n<pre>mmm:PRIMARY> for(var i=0;i<10000;i++){db.test.insert({\"name\":\"test\"+i,\"age\":123})}\nmmm:PRIMARY> db.test.count()\n10001<\/pre>\n<\/div>\n<p>\u5728Secondary\u4e0a\u67e5\u770b\u662f\u5426\u5df2\u7ecf\u540c\u6b65\uff1a<\/p>\n<div class=\"cnblogs_code\">\n<pre>mmm:SECONDARY> rs.slaveOk()\nmmm:SECONDARY> db.test.count()\n10001<\/pre>\n<\/div>\n<p>\u6570\u636e\u5df2\u7ecf\u540c\u6b65\u3002<\/p>\n<p><strong>2\uff1a\u6d4b\u8bd5\u526f\u672c\u96c6\u6545\u969c\u8f6c\u79fb\u529f\u80fd<\/strong><\/p>\n<p>\u5173\u95edPrimary\u8282\u70b9\uff0c\u67e5\u770b\u5176\u4ed62\u4e2a\u8282\u70b9\u7684\u60c5\u51b5\uff1a<\/p>\n<div class=\"cnblogs_code\">\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/nick.txtcc.com\/wp-content\/uploads\/remote_image\/2017\/09\/074352BbA.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"><\/a><\/span><\/div>\n<pre>mmm:PRIMARY> rs.status()\n{\n    \"set\" : \"mmm\",\n    \"date\" : ISODate(\"2014-02-18T05:38:54Z\"),\n    \"myState\" : 1,\n    \"members\" : [\n        {\n            \"_id\" : 1,\n            \"name\" : \"192.168.200.252:27017\",\n            \"health\" : 1,\n            \"state\" : 1,\n            \"stateStr\" : \"<strong>PRIMARY<\/strong>\",\n            \"uptime\" : 5777,\n            \"optime\" : Timestamp(1392701576, 2678),\n            \"optimeDate\" : ISODate(\"2014-02-18T05:32:56Z\"),\n            \"self\" : true\n        },\n        {\n            \"_id\" : 2,\n            \"name\" : \"192.168.200.245:27017\",\n            \"health\" : 1,\n            \"state\" : 2,\n            \"stateStr\" : \"SECONDARY\",\n            \"uptime\" : 2265,\n            \"optime\" : Timestamp(1392701576, 2678),\n            \"optimeDate\" : ISODate(\"2014-02-18T05:32:56Z\"),\n            \"lastHeartbeat\" : ISODate(\"2014-02-18T05:38:54Z\"),\n            \"lastHeartbeatRecv\" : ISODate(\"2014-02-18T05:38:53Z\"),\n            \"pingMs\" : 0,\n            \"syncingTo\" : \"192.168.200.252:27017\"\n        },\n        {\n            \"_id\" : 3,\n            \"name\" : \"192.168.200.25:27017\",\n            \"health\" : 1,\n            \"state\" : 2,\n            \"stateStr\" : \"<strong>SECONDARY<\/strong>\",\n            \"uptime\" : 2179,\n            \"optime\" : Timestamp(1392701576, 2678),\n            \"optimeDate\" : ISODate(\"2014-02-18T05:32:56Z\"),\n            \"lastHeartbeat\" : ISODate(\"2014-02-18T05:38:54Z\"),\n            \"lastHeartbeatRecv\" : ISODate(\"2014-02-18T05:38:53Z\"),\n            \"pingMs\" : 0,\n            \"syncingTo\" : \"192.168.200.252:27017\"\n        }\n    ],\n    \"ok\" : 1\n}\n\n#\u5173\u95ed\nmmm:PRIMARY> use admin\nswitched to db admin\nmmm:PRIMARY> db.shutdownServer()\n\n#\u8fdb\u5165\u4efb\u610f\u4e00\u53f0\uff1a\nmmm:SECONDARY> rs.status()\n{\n    \"set\" : \"mmm\",\n    \"date\" : ISODate(\"2014-02-18T05:47:41Z\"),\n    \"myState\" : 2,\n    \"syncingTo\" : \"192.168.200.25:27017\",\n    \"members\" : [\n        {\n            \"_id\" : 1,\n            \"name\" : \"192.168.200.252:27017\",\n            \"health\" : 0,\n            \"state\" : 8,\n            \"stateStr\" : \"(<strong>not reachable\/healthy<\/strong>)\",\n            \"uptime\" : 0,\n            \"optime\" : Timestamp(1392701576, 2678),\n            \"optimeDate\" : ISODate(\"2014-02-18T05:32:56Z\"),\n            \"lastHeartbeat\" : ISODate(\"2014-02-18T05:47:40Z\"),\n            \"lastHeartbeatRecv\" : ISODate(\"2014-02-18T05:45:57Z\"),\n            \"pingMs\" : 0\n        },\n        {\n            \"_id\" : 2,\n            \"name\" : \"192.168.200.245:27017\",\n            \"health\" : 1,\n            \"state\" : 2,\n            \"stateStr\" : \"SECONDARY\",\n            \"uptime\" : 5888,\n            \"optime\" : Timestamp(1392701576, 2678),\n            \"optimeDate\" : ISODate(\"2014-02-18T05:32:56Z\"),\n            \"errmsg\" : \"syncing to: 192.168.200.25:27017\",\n            \"self\" : true\n        },\n        {\n            \"_id\" : 3,\n            \"name\" : \"192.168.200.25:27017\",\n            \"health\" : 1,\n            \"state\" : 1,\n            \"stateStr\" : \"<strong>PRIMARY<\/strong>\",\n            \"uptime\" : 2292,\n            \"optime\" : Timestamp(1392701576, 2678),\n            \"optimeDate\" : ISODate(\"2014-02-18T05:32:56Z\"),\n            \"lastHeartbeat\" : ISODate(\"2014-02-18T05:47:40Z\"),\n            \"lastHeartbeatRecv\" : ISODate(\"2014-02-18T05:47:39Z\"),\n            \"pingMs\" : 0,\n            \"syncingTo\" : \"192.168.200.252:27017\"\n        }\n    ],\n    \"ok\" : 1\n}<\/pre>\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/nick.txtcc.com\/wp-content\/uploads\/remote_image\/2017\/09\/074352BbA.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"><\/a><\/span><\/div>\n<\/div>\n<p>\u770b\u5230192.168.200.25:27017 \u5df2\u7ecf\u4ece SECONDARY \u53d8\u6210\u4e86 PRIMARY\u3002\u5177\u4f53\u7684\u4fe1\u606f\u53ef\u4ee5\u901a\u8fc7\u65e5\u5fd7\u6587\u4ef6\u5f97\u77e5\u3002\u7ee7\u7eed\u64cd\u4f5c\uff1a<\/p>\n<p>\u5728\u65b0\u4e3b\u4e0a\u63d2\u5165\uff1a<\/p>\n<div class=\"cnblogs_code\">\n<pre>mmm:PRIMARY> for(var i=0;i<10000;i++){db.test.insert({\"name\":\"test\"+i,\"age\":123})}\nmmm:PRIMARY> db.test.count()\n20001<\/pre>\n<\/div>\n<p>\u91cd\u542f\u542f\u52a8\u4e4b\u524d\u5173\u95ed\u7684192.168.200.252:27017<\/p>\n<div class=\"cnblogs_code\">\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/nick.txtcc.com\/wp-content\/uploads\/remote_image\/2017\/09\/074352BbA.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"><\/a><\/span><\/div>\n<pre>mmm:SECONDARY> rs.status()\n{\n    \"set\" : \"mmm\",\n    \"date\" : ISODate(\"2014-02-18T05:45:14Z\"),\n    \"myState\" : 2,\n    \"syncingTo\" : \"192.168.200.245:27017\",\n    \"members\" : [\n        {\n            \"_id\" : 1,\n            \"name\" : \"192.168.200.252:27017\",\n            \"health\" : 1,\n            \"state\" : 2,\n            \"stateStr\" : \"<strong>SECONDARY<\/strong>\",\n            \"uptime\" : 12,\n            \"optime\" : Timestamp(1392702168, 8187),\n            \"optimeDate\" : ISODate(\"2014-02-18T05:42:48Z\"),\n            \"errmsg\" : \"syncing to: 192.168.200.245:27017\",\n            \"self\" : true\n        },\n        {\n            \"_id\" : 2,\n            \"name\" : \"192.168.200.245:27017\",\n            \"health\" : 1,\n            \"state\" : 2,\n            \"stateStr\" : \"SECONDARY\",\n            \"uptime\" : 11,\n            \"optime\" : Timestamp(1392702168, 8187),\n            \"optimeDate\" : ISODate(\"2014-02-18T05:42:48Z\"),\n            \"lastHeartbeat\" : ISODate(\"2014-02-18T05:45:13Z\"),\n            \"lastHeartbeatRecv\" : ISODate(\"2014-02-18T05:45:12Z\"),\n            \"pingMs\" : 0,\n            \"syncingTo\" : \"192.168.200.25:27017\"\n        },\n        {\n            \"_id\" : 3,\n            \"name\" : \"192.168.200.25:27017\",\n            \"health\" : 1,\n            \"state\" : 1,\n            \"stateStr\" : \"PRIMARY\",\n            \"uptime\" : 9,\n            \"optime\" : Timestamp(1392702168, 8187),\n            \"optimeDate\" : ISODate(\"2014-02-18T05:42:48Z\"),\n            \"lastHeartbeat\" : ISODate(\"2014-02-18T05:45:13Z\"),\n            \"lastHeartbeatRecv\" : ISODate(\"2014-02-18T05:45:13Z\"),\n            \"pingMs\" : 0\n        }\n    ],\n    \"ok\" : 1\n}<\/pre>\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/nick.txtcc.com\/wp-content\/uploads\/remote_image\/2017\/09\/074352BbA.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"><\/a><\/span><\/div>\n<\/div>\n<p>\u542f\u52a8\u4e4b\u524d\u7684\u4e3b\uff0c\u53d1\u73b0\u5176\u53d8\u6210\u4e86SECONDARY\uff0c\u5728\u65b0\u4e3b\u63d2\u5165\u7684\u6570\u636e\uff0c\u662f\u5426\u5df2\u7ecf\u540c\u6b65\uff1a<\/p>\n<div class=\"cnblogs_code\">\n<pre>mmm:SECONDARY> db.test.count()\nTue Feb 18 13:47:03.634 count failed: { \"note\" : \"from execCommand\", \"ok\" : 0, \"errmsg\" : \"not master\" } at src\/mongo\/shell\/query.js:180\nmmm:SECONDARY> rs.slaveOk()\nmmm:SECONDARY> db.test.count()\n20001<\/pre>\n<\/div>\n<p>\u5df2\u7ecf\u540c\u6b65\u3002<\/p>\n<p><strong>\u6ce8\u610f<\/strong>\uff1a<\/p>\n<p>\u6240\u6709\u7684Secondary\u90fd\u5b95\u673a\u3001\u6216\u5219\u526f\u672c\u96c6\u4e2d\u53ea\u5269\u4e0b\u4e00\u4e2a\u8282\u70b9\uff0c\u5219\u8be5\u8282\u70b9\u53ea\u80fd\u4e3aSecondary\u8282\u70b9\uff0c\u4e5f\u5c31\u610f\u5473\u7740\u6574\u4e2a\u96c6\u7fa4\u667a\u80fd\u8fdb\u884c\u8bfb\u64cd\u4f5c\u800c\u4e0d\u80fd\u8fdb\u884c\u5199\u64cd\u4f5c\uff0c\u5f53\u5176\u4ed6\u7684\u6062\u590d\u65f6\uff0c\u4e4b\u524d\u7684primary\u8282\u70b9\u4ecd\u7136\u662fprimary\u8282\u70b9\u3002<\/p>\n<p>\u5f53\u67d0\u4e2a\u8282\u70b9\u5b95\u673a\u540e\u91cd\u65b0\u542f\u52a8\u8be5\u8282\u70b9\u4f1a\u6709\u4e00\u6bb5\u7684\u65f6\u95f4\uff08\u65f6\u95f4\u957f\u77ed\u89c6\u96c6\u7fa4\u7684\u6570\u636e\u91cf\u548c\u5b95\u673a\u65f6\u95f4\u800c\u5b9a\uff09\u5bfc\u81f4\u6574\u4e2a\u96c6\u7fa4\u4e2d\u6240\u6709\u8282\u70b9\u90fd\u6210\u4e3asecondary\u800c\u65e0\u6cd5\u8fdb\u884c\u5199\u64cd\u4f5c\uff08\u5982\u679c\u5e94\u7528\u7a0b\u5e8f\u6ca1\u6709\u8bbe\u7f6e\u76f8\u5e94\u7684ReadReference\u4e5f\u53ef\u80fd\u4e0d\u80fd\u8fdb\u884c\u8bfb\u53d6\u64cd\u4f5c\uff09\u3002<\/p>\n<p>\u5b98\u65b9\u63a8\u8350\u7684<strong>\u6700\u5c0f\u7684\u526f\u672c\u96c6\u4e5f\u5e94\u8be5\u5177\u5907\u4e00\u4e2aprimary\u8282\u70b9\u548c\u4e24\u4e2asecondary\u8282\u70b9\u3002\u4e24\u4e2a\u8282\u70b9\u7684\u526f\u672c\u96c6\u4e0d\u5177\u5907\u771f\u6b63\u7684\u6545\u969c\u8f6c\u79fb\u80fd\u529b\u3002<\/strong><\/p>\n<p><strong>\u56db\uff1a\u5e94\u7528<\/strong><\/p>\n<p><strong>1\uff1a\u624b\u52a8\u5207\u6362Primary\u8282\u70b9\u5230\u81ea\u5df1\u7ed9\u5b9a\u7684\u8282\u70b9<\/strong>\n\u4e0a\u9762\u5df2\u7ecf\u63d0\u5230\u8fc7\u4e86\u4f18\u5148\u96c6priority\uff0c\u56e0\u4e3a\u9ed8\u8ba4\u7684\u90fd\u662f1\uff0c\u6240\u4ee5\u53ea\u9700\u8981\u628a\u7ed9\u5b9a\u7684\u670d\u52a1\u5668\u7684priority\u52a0\u5230\u6700\u5927\u5373\u53ef\u3002\u8ba9245 \u6210\u4e3a\u4e3b\u8282\u70b9\uff0c\u64cd\u4f5c\u5982\u4e0b\uff1a<\/p>\n<div class=\"cnblogs_code\">\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/nick.txtcc.com\/wp-content\/uploads\/remote_image\/2017\/09\/074352BbA.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"><\/a><\/span><\/div>\n<pre>mmm:PRIMARY><strong> rs.conf() #\u67e5\u770b\u914d\u7f6e<\/strong>\n{\n    \"_id\" : \"mmm\",\n    \"version\" : 6,  #\u6bcf\u6539\u53d8\u4e00\u6b21\u96c6\u7fa4\u7684\u914d\u7f6e\uff0c\u526f\u672c\u96c6\u7684<strong>version<\/strong>\u90fd\u4f1a\u52a01\u3002\n    \"members\" : [\n        {\n            \"_id\" : 1,\n            \"host\" : \"192.168.200.252:27017\"\n        },\n        {\n            \"_id\" : 2,\n            \"host\" : \"192.168.200.245:27017\"\n        },\n        {\n            \"_id\" : 3,\n            \"host\" : \"192.168.200.25:27017\"\n        }\n    ]\n}\nmmm:PRIMARY><strong> rs.status() #\u67e5\u770b\u72b6\u6001<\/strong>\n{\n    \"set\" : \"mmm\",\n    \"date\" : ISODate(\"2014-02-18T07:25:51Z\"),\n    \"myState\" : 1,\n    \"members\" : [\n        {\n            \"_id\" : 1,\n            \"name\" : \"192.168.200.252:27017\",\n            \"health\" : 1,\n            \"state\" : 2,\n            \"stateStr\" : \"SECONDARY\",\n            \"uptime\" : 47,\n            \"optime\" : Timestamp(1392708304, 1),\n            \"optimeDate\" : ISODate(\"2014-02-18T07:25:04Z\"),\n            \"lastHeartbeat\" : ISODate(\"2014-02-18T07:25:50Z\"),\n            \"lastHeartbeatRecv\" : ISODate(\"2014-02-18T07:25:50Z\"),\n            \"pingMs\" : 0,\n            \"lastHeartbeatMessage\" : \"syncing to: 192.168.200.25:27017\",\n            \"syncingTo\" : \"192.168.200.25:27017\"\n        },\n        {\n            \"_id\" : 2,\n            \"name\" : \"192.168.200.245:27017\",\n            \"health\" : 1,\n            \"state\" : 2,\n            \"stateStr\" : \"<strong>SECONDARY<\/strong>\",\n            \"uptime\" : 47,\n            \"optime\" : Timestamp(1392708304, 1),\n            \"optimeDate\" : ISODate(\"2014-02-18T07:25:04Z\"),\n            \"lastHeartbeat\" : ISODate(\"2014-02-18T07:25:50Z\"),\n            \"lastHeartbeatRecv\" : ISODate(\"2014-02-18T07:25:51Z\"),\n            \"pingMs\" : 0,\n            \"lastHeartbeatMessage\" : \"syncing to: 192.168.200.25:27017\",\n            \"syncingTo\" : \"192.168.200.25:27017\"\n        },\n        {\n            \"_id\" : 3,\n            \"name\" : \"192.168.200.25:27017\",\n            \"health\" : 1,\n            \"state\" : 1,\n            \"stateStr\" : \"<strong>PRIMARY<\/strong>\",\n            \"uptime\" : 13019,\n            \"optime\" : Timestamp(1392708304, 1),\n            \"optimeDate\" : ISODate(\"2014-02-18T07:25:04Z\"),\n            \"self\" : true\n        }\n    ],\n    \"ok\" : 1\n}\nmmm:PRIMARY> <strong>cfg=<\/strong>\n<strong>rs.conf() #<\/strong>\n{\n    \"_id\" : \"mmm\",\n    \"version\" : 4,\n    \"members\" : [\n        {\n            \"_id\" : 1,\n            \"host\" : \"192.168.200.252:27017\"\n        },\n        {\n            \"_id\" : 2,\n            \"host\" : \"192.168.200.245:27017\"\n        },\n        {\n            \"_id\" : 3,\n            \"host\" : \"192.168.200.25:27017\"\n        }\n    ]\n}\nmmm:PRIMARY> <strong>cfg.members[1].priority=2  #\u4fee\u6539priority<\/strong>\n2\nmmm:PRIMARY><strong> rs.reconfig(cfg) #\u91cd\u65b0\u52a0\u8f7d\u914d\u7f6e\u6587\u4ef6\uff0c\u5f3a\u5236\u4e86\u526f\u672c\u96c6\u8fdb\u884c\u4e00\u6b21\u9009\u4e3e\uff0c\u4f18\u5148\u7ea7\u9ad8\u7684\u6210\u4e3aPrimary\u3002<\/strong>\n<strong>\u5728\u8fd9\u4e4b\u95f4\u6574\u4e2a\u96c6\u7fa4\u7684\u6240\u6709\u8282\u70b9\u90fd\u662f<strong>secondary<\/strong>\n<\/strong>\nmmm:SECONDARY> rs.status()\n{\n    \"set\" : \"mmm\",\n    \"date\" : ISODate(\"2014-02-18T07:27:38Z\"),\n    \"myState\" : 2,\n    \"syncingTo\" : \"192.168.200.245:27017\",\n    \"members\" : [\n        {\n            \"_id\" : 1,\n            \"name\" : \"192.168.200.252:27017\",\n            \"health\" : 1,\n            \"state\" : 2,\n            \"stateStr\" : \"SECONDARY\",\n            \"uptime\" : 71,\n            \"optime\" : Timestamp(1392708387, 1),\n            \"optimeDate\" : ISODate(\"2014-02-18T07:26:27Z\"),\n            \"lastHeartbeat\" : ISODate(\"2014-02-18T07:27:37Z\"),\n            \"lastHeartbeatRecv\" : ISODate(\"2014-02-18T07:27:38Z\"),\n            \"pingMs\" : 0,\n            \"lastHeartbeatMessage\" : \"syncing to: 192.168.200.245:27017\",\n            \"syncingTo\" : \"192.168.200.245:27017\"\n        },\n        {\n            \"_id\" : 2,\n            \"name\" : \"192.168.200.245:27017\",\n            \"health\" : 1,\n            \"state\" : 1,\n            \"stateStr\" : \"<strong>PRIMARY<\/strong>\",\n            \"uptime\" : 71,\n            \"optime\" : Timestamp(1392708387, 1),\n            \"optimeDate\" : ISODate(\"2014-02-18T07:26:27Z\"),\n            \"lastHeartbeat\" : ISODate(\"2014-02-18T07:27:37Z\"),\n            \"lastHeartbeatRecv\" : ISODate(\"2014-02-18T07:27:38Z\"),\n            \"pingMs\" : 0,\n            \"syncingTo\" : \"192.168.200.25:27017\"\n        },\n        {\n            \"_id\" : 3,\n            \"name\" : \"192.168.200.25:27017\",\n            \"health\" : 1,\n            \"state\" : 2,\n            \"stateStr\" : \"<strong>SECONDARY<\/strong>\",\n            \"uptime\" : 13126,\n            \"optime\" : Timestamp(1392708387, 1),\n            \"optimeDate\" : ISODate(\"2014-02-18T07:26:27Z\"),\n            \"errmsg\" : \"syncing to: 192.168.200.245:27017\",\n            \"self\" : true\n        }\n    ],\n    \"ok\" : 1\n}<\/pre>\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/nick.txtcc.com\/wp-content\/uploads\/remote_image\/2017\/09\/074352BbA.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"><\/a><\/span><\/div>\n<\/div>\n<p>\u8fd9\u6837\uff0c\u7ed9\u5b9a\u7684245\u670d\u52a1\u5668\u5c31\u6210\u4e3a\u4e86\u4e3b\u8282\u70b9\u3002<\/p>\n<p><strong>2\uff1a\u6dfb\u52a0\u4ef2\u88c1\u8282\u70b9<\/strong><\/p>\n<p>\u628a25\u8282\u70b9\u5220\u9664\uff0c\u91cd\u542f\u3002\u518d\u6dfb\u52a0\u8ba9\u5176\u4e3a\u4ef2\u88c1\u8282\u70b9\uff1a<\/p>\n<div class=\"cnblogs_code\">\n<pre><strong>rs.addArb<\/strong>(\"192.168.200.25:27017\")<\/pre>\n<\/div>\n<div class=\"cnblogs_code\">\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/nick.txtcc.com\/wp-content\/uploads\/remote_image\/2017\/09\/074352BbA.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"><\/a><\/span><\/div>\n<pre>mmm:PRIMARY> rs.status()\n{\n    \"set\" : \"mmm\",\n    \"date\" : ISODate(\"2014-02-18T08:14:36Z\"),\n    \"myState\" : 1,\n    \"members\" : [\n        {\n            \"_id\" : 1,\n            \"name\" : \"192.168.200.252:27017\",\n            \"health\" : 1,\n            \"state\" : 2,\n            \"stateStr\" : \"SECONDARY\",\n            \"uptime\" : 795,\n            \"optime\" : Timestamp(1392711068, 100),\n            \"optimeDate\" : ISODate(\"2014-02-18T08:11:08Z\"),\n            \"lastHeartbeat\" : ISODate(\"2014-02-18T08:14:35Z\"),\n            \"lastHeartbeatRecv\" : ISODate(\"2014-02-18T08:14:35Z\"),\n            \"pingMs\" : 0,\n            \"syncingTo\" : \"192.168.200.245:27017\"\n        },\n        {\n            \"_id\" : 2,\n            \"name\" : \"192.168.200.245:27017\",\n            \"health\" : 1,\n            \"state\" : 1,\n            \"stateStr\" : \"PRIMARY\",\n            \"uptime\" : 14703,\n            \"optime\" : Timestamp(1392711068, 100),\n            \"optimeDate\" : ISODate(\"2014-02-18T08:11:08Z\"),\n            \"self\" : true\n        },\n        {\n            \"_id\" : 3,\n            \"name\" : \"192.168.200.25:27017\",\n            \"health\" : 1,\n            \"state\" : 7,\n            \"stateStr\" : \"<strong>ARBITER<\/strong>\",\n            \"uptime\" : 26,\n            \"lastHeartbeat\" : ISODate(\"2014-02-18T08:14:34Z\"),\n            \"lastHeartbeatRecv\" : ISODate(\"2014-02-18T08:14:34Z\"),\n            \"pingMs\" : 0,\n            \"syncingTo\" : \"192.168.200.252:27017\"\n        }\n    ],\n    \"ok\" : 1\n}\nmmm:PRIMARY> rs.conf()\n{\n    \"_id\" : \"mmm\",\n    \"version\" : 9,\n    \"members\" : [\n        {\n            \"_id\" : 1,\n            \"host\" : \"192.168.200.252:27017\"\n        },\n        {\n            \"_id\" : 2,\n            \"host\" : \"192.168.200.245:27017\",\n            \"priority\" : 2\n        },\n        {\n            \"_id\" : 3,\n            \"host\" : \"192.168.200.25:27017\",\n            \"<strong>arbiterOnly<\/strong>\" : true\n        }\n    ]\n}<\/pre>\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/nick.txtcc.com\/wp-content\/uploads\/remote_image\/2017\/09\/074352BbA.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"><\/a><\/span><\/div>\n<\/div>\n<p>\u4e0a\u9762\u8bf4\u660e\u5df2\u7ecf\u8ba925\u670d\u52a1\u5668\u6210\u4e3a\u4ef2\u88c1\u8282\u70b9\u3002\u526f\u672c\u96c6\u8981\u6c42\u53c2\u4e0e\u9009\u4e3e\u6295\u7968(vote)\u7684\u8282\u70b9\u6570\u4e3a\u5947\u6570\uff0c\u5f53\u6211\u4eec\u5b9e\u9645\u73af\u5883\u4e2d\u56e0\u4e3a\u673a\u5668\u7b49\u539f\u56e0\u9650\u5236\u53ea\u6709\u4e24\u4e2a(\u6216\u5076\u6570)\u7684\u8282\u70b9\uff0c\u8fd9\u65f6\u4e3a\u4e86\u5b9e\u73b0 Automatic Failover\u5f15\u5165\u53e6\u4e00\u7c7b\u8282\u70b9\uff1a\u4ef2\u88c1\u8005\uff08arbiter\uff09\uff0c\u4ef2\u88c1\u8005\u53ea\u53c2\u4e0e\u6295\u7968\u4e0d\u62e5\u6709\u5b9e\u9645\u7684\u6570\u636e\uff0c\u5e76\u4e14\u4e0d\u63d0\u4f9b\u4efb\u4f55\u670d\u52a1\uff0c\u56e0\u6b64\u5b83\u5bf9\u7269\u7406\u8d44\u6e90\u8981\u6c42\u4e0d\u4e25\u683c\u3002<\/p>\n<p>\u901a\u8fc7\u5b9e\u9645\u6d4b\u8bd5\u53d1\u73b0\uff0c\u5f53\u6574\u4e2a\u526f\u672c\u96c6\u96c6\u7fa4\u4e2d\u8fbe\u523050%\u7684\u8282\u70b9\uff08\u5305\u62ec\u4ef2\u88c1\u8282\u70b9\uff09\u4e0d\u53ef\u7528\u7684\u65f6\u5019\uff0c\u5269\u4e0b\u7684\u8282\u70b9\u53ea\u80fd\u6210\u4e3asecondary\u8282\u70b9\uff0c\u6574\u4e2a\u96c6\u7fa4\u53ea\u80fd\u8bfb\u4e0d\u80fd \u5199\u3002\u6bd4\u5982\u96c6\u7fa4\u4e2d\u67091\u4e2aprimary\u8282\u70b9\uff0c2\u4e2asecondary\u8282\u70b9\uff0c\u52a01\u4e2aarbit\u8282\u70b9\u65f6\uff1a\u5f53\u4e24\u4e2asecondary\u8282\u70b9\u6302\u6389\u4e86\uff0c\u90a3\u4e48\u5269\u4e0b\u7684\u539f\u6765\u7684 primary\u8282\u70b9\u4e5f\u53ea\u80fd\u964d\u7ea7\u4e3asecondary\u8282\u70b9\uff1b\u5f53\u96c6\u7fa4\u4e2d\u67091\u4e2aprimary\u8282\u70b9\uff0c1\u4e2asecondary\u8282\u70b9\u548c1\u4e2aarbit\u8282\u70b9\uff0c\u8fd9\u65f6\u5373\u4f7f primary\u8282\u70b9\u6302\u4e86\uff0c\u5269\u4e0b\u7684secondary\u8282\u70b9\u4e5f\u4f1a\u81ea\u52a8\u6210\u4e3aprimary\u8282\u70b9\u3002\u56e0\u4e3a\u4ef2\u88c1\u8282\u70b9\u4e0d\u590d\u5236\u6570\u636e\uff0c\u56e0\u6b64\u5229\u7528\u4ef2\u88c1\u8282\u70b9\u53ef\u4ee5\u5b9e\u73b0\u6700\u5c11\u7684\u673a\u5668\u5f00 \u9500\u8fbe\u5230\u4e24\u4e2a\u8282\u70b9\u70ed\u5907\u7684\u6548\u679c\u3002<\/p>\n<p><strong>3\uff1a\u6dfb\u52a0\u5907\u4efd\u8282\u70b9<\/strong><\/p>\n<p>hidden\uff08\u6210\u5458\u7528\u4e8e\u652f\u6301\u4e13\u7528\u529f\u80fd\uff09\uff1a\u8fd9\u6837\u8bbe\u7f6e\u540e\u6b64\u673a\u5668\u5728\u8bfb\u5199\u4e2d\u90fd\u4e0d\u53ef\u89c1\uff0c\u5e76\u4e14\u4e0d\u4f1a\u88ab\u9009\u4e3e\u4e3aPrimary\uff0c\u4f46\u662f\u53ef\u4ee5\u6295\u7968\uff0c\u4e00\u822c\u7528\u4e8e\u5907\u4efd\u6570\u636e\u3002<\/p>\n<p>\u628a25\u8282\u70b9\u5220\u9664\uff0c\u91cd\u542f\u3002\u518d\u6dfb\u52a0\u8ba9\u5176\u4e3ahidden\u8282\u70b9\uff1a<\/p>\n<div class=\"cnblogs_code\">\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/nick.txtcc.com\/wp-content\/uploads\/remote_image\/2017\/09\/074352BbA.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"><\/a><\/span><\/div>\n<pre>mmm:PRIMARY> rs.add({\"_id\":3,\"host\":\"192.168.200.25:27017\",\"<strong>priority<\/strong>\":0,\"<strong>hidden<\/strong>\":true})\n{ \"down\" : [ \"192.168.200.25:27017\" ], \"ok\" : 1 }\nmmm:PRIMARY> rs.conf()\n{\n    \"_id\" : \"mmm\",\n    \"version\" : 17,\n    \"members\" : [\n        {\n            \"_id\" : 1,\n            \"host\" : \"192.168.200.252:27017\"\n        },\n        {\n            \"_id\" : 2,\n            \"host\" : \"192.168.200.245:27017\"\n        },\n        {\n            \"_id\" : 3,\n            \"host\" : \"192.168.200.25:27017\",\n            <strong>\"priority\" : 0,\n            <\/strong>\"<strong>hidden<\/strong>\"<strong> :<\/strong> <strong>true<\/strong>\n        }\n    ]\n}<\/pre>\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/nick.txtcc.com\/wp-content\/uploads\/remote_image\/2017\/09\/074352BbA.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"><\/a><\/span><\/div>\n<\/div>\n<p>\u6d4b\u8bd5\u5176\u80fd\u5426\u53c2\u4e0e\u6295\u7968\uff1a\u5173\u95ed\u5f53\u524d\u7684Primary\uff0c\u67e5\u770b\u662f\u5426\u81ea\u52a8\u8f6c\u79fbPrimary<\/p>\n<div class=\"cnblogs_code\">\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/nick.txtcc.com\/wp-content\/uploads\/remote_image\/2017\/09\/074352BbA.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"><\/a><\/span><\/div>\n<pre>\u5173\u95edPrimary\uff08252\uff09\uff1a\nmmm:PRIMARY> use admin\nswitched to db admin\nmmm:PRIMARY> db.shutdownServer()\n\n\u8fde\u53e6\u4e00\u4e2a\u94fe\u63a5\u5bdf\u770b\uff1a\nmmm:PRIMARY> rs.status()\n{\n    \"set\" : \"mmm\",\n    \"date\" : ISODate(\"2014-02-19T09:11:45Z\"),\n    \"myState\" : 1,\n    \"members\" : [\n        {\n            \"_id\" : 1,\n            \"name\" : \"192.168.200.252:27017\",\n            \"health\" : 1,\n            \"state\" : 1,\n            \"stateStr\" :\"(not reachable\/healthy)\",\n            \"uptime\" : 4817,\n            \"optime\" : Timestamp(1392801006, 1),\n            \"optimeDate\" : ISODate(\"2014-02-19T09:10:06Z\"),\n            \"self\" : true\n        },\n        {\n            \"_id\" : 2,\n            \"name\" : \"192.168.200.245:27017\",\n            \"health\" : 1,\n            \"state\" : 2,\n            \"stateStr\" : \"PRIMARY\",\n            \"uptime\" : 401,\n            \"optime\" : Timestamp(1392801006, 1),\n            \"optimeDate\" : ISODate(\"2014-02-19T09:10:06Z\"),\n            \"lastHeartbeat\" : ISODate(\"2014-02-19T09:11:44Z\"),\n            \"lastHeartbeatRecv\" : ISODate(\"2014-02-19T09:11:43Z\"),\n            \"pingMs\" : 0,\n            \"syncingTo\" : \"192.168.200.252:27017\"\n        },\n        {\n            \"_id\" : 3,\n            \"name\" : \"192.168.200.25:27017\",\n            \"health\" : 1,\n            \"state\" : 2,\n            \"stateStr\" : \"SECONDARY\",\n            \"uptime\" : 99,\n            \"optime\" : Timestamp(1392801006, 1),\n            \"optimeDate\" : ISODate(\"2014-02-19T09:10:06Z\"),\n            \"lastHeartbeat\" : ISODate(\"2014-02-19T09:11:44Z\"),\n            \"lastHeartbeatRecv\" : ISODate(\"2014-02-19T09:11:43Z\"),\n            \"pingMs\" : 0,\n            \"syncingTo\" : \"192.168.200.252:27017\"\n        }\n    ],\n    \"ok\" : 1\n}\n\u4e0a\u9762\u8bf4\u660ePrimary\u5df2\u7ecf\u8f6c\u79fb\uff0c\u8bf4\u660ehidden\u5177\u6709\u6295\u7968\u7684\u6743\u5229\uff0c\u7ee7\u7eed\u67e5\u770b\u662f\u5426\u6709\u6570\u636e\u590d\u5236\u7684\u529f\u80fd\u3002\n<strong>#####<\/strong>\nmmm:PRIMARY> db.test.count()\n20210\nmmm:PRIMARY> for(var i=0;i<90;i++){db.test.insert({\"name\":\"test\"+i,\"age\":123})}\nmmm:PRIMARY> db.test.count()\n20300\n\nSecondady:\nmmm:SECONDARY> db.test.count()\nWed Feb 19 17:18:19.469 count failed: { \"note\" : \"from execCommand\", \"ok\" : 0, \"errmsg\" : \"not master\" } at src\/mongo\/shell\/query.js:180\nmmm:SECONDARY> rs.slaveOk()\nmmm:SECONDARY> db.test.count()\n20300\n\u4e0a\u9762\u8bf4\u660ehidden\u5177\u6709\u6570\u636e\u590d\u5236\u7684\u529f\u80fd<\/pre>\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/nick.txtcc.com\/wp-content\/uploads\/remote_image\/2017\/09\/074352BbA.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"><\/a><\/span><\/div>\n<\/div>\n<p>\u540e\u9762\u5927\u5bb6\u53ef\u4ee5\u5728\u4e0a\u9762\u8fdb\u884c\u5907\u4efd\u4e86\uff0c\u540e\u4e00\u7bc7\u4f1a\u4ecb\u7ecd\u5982\u4f55\u5907\u4efd\u3001\u8fd8\u539f\u4ee5\u53ca\u4e00\u4e9b\u65e5\u5e38\u7ef4\u62a4\u9700\u8981\u7684\u64cd\u4f5c\u3002<\/p>\n<p><strong>4\uff1a\u6dfb\u52a0\u5ef6\u8fdf\u8282\u70b9<\/strong><\/p>\n<p>Delayed\uff08\u6210\u5458\u7528\u4e8e\u652f\u6301\u4e13\u7528\u529f\u80fd\uff09\uff1a\u53ef\u4ee5\u6307\u5b9a\u4e00\u4e2a\u65f6\u95f4\u5ef6\u8fdf\u4eceprimary\u8282\u70b9\u540c\u6b65\u6570\u636e\u3002\u4e3b\u8981\u7528\u4e8e\u5904\u7406\u8bef\u5220\u9664\u6570\u636e\u9a6c\u4e0a\u540c\u6b65\u5230\u4ece\u8282\u70b9\u5bfc\u81f4\u7684\u4e0d\u4e00\u81f4\u95ee\u9898\u3002<\/p>\n<p>\u628a25\u8282\u70b9\u5220\u9664\uff0c\u91cd\u542f\u3002\u518d\u6dfb\u52a0\u8ba9\u5176\u4e3aDelayed\u8282\u70b9\uff1a<\/p>\n<div class=\"cnblogs_code\">\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/nick.txtcc.com\/wp-content\/uploads\/remote_image\/2017\/09\/074352BbA.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"><\/a><\/span><\/div>\n<pre>mmm:PRIMARY> rs.add({\"_id\":3,\"host\":\"192.168.200.25:27017\",\"<strong>priority<\/strong>\":0,\"<strong>hidden<\/strong>\":true,\"<strong>slaveDelay<\/strong>\":60})  #\u8bed\u6cd5\n{ \"down\" : [ \"192.168.200.25:27017\" ], \"ok\" : 1 }\n\nmmm:PRIMARY> rs.conf()\n{\n    \"_id\" : \"mmm\",\n    \"version\" : 19,\n    \"members\" : [\n        {\n            \"_id\" : 1,\n            \"host\" : \"192.168.200.252:27017\"\n        },\n        {\n            \"_id\" : 2,\n            \"host\" : \"192.168.200.245:27017\"\n        },\n        {\n            \"_id\" : 3,\n            \"host\" : \"192.168.200.25:27017\",\n            <strong>\"priority\" : 0,\n           <\/strong> <strong>\"slaveDelay\" : 60,   \n            <\/strong>\n<strong>\"hidden<\/strong>\n<strong>\"<\/strong> <strong>:<\/strong> <strong>true<\/strong>\n        }\n    ]\n}<\/pre>\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/nick.txtcc.com\/wp-content\/uploads\/remote_image\/2017\/09\/074352BbA.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"><\/a><\/span><\/div>\n<\/div>\n<p>\u6d4b\u8bd5\uff1a\u64cd\u4f5cPrimary\uff0c\u770b\u6570\u636e\u662f\u542660s\u540e\u540c\u6b65\u5230delayed\u8282\u70b9\u3002<\/p>\n<div class=\"cnblogs_code\">\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/nick.txtcc.com\/wp-content\/uploads\/remote_image\/2017\/09\/074352BbA.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"><\/a><\/span><\/div>\n<pre>mmm:PRIMARY> db.test.count()\n20300\nmmm:PRIMARY> for(var i=0;i<200;i++){db.test.insert({\"name\":\"test\"+i,\"age\":123})}\nmmm:PRIMARY> db.test.count()\n20500\n\nDelayed\uff1a\nmmm:SECONDARY> db.test.count()\n20300<strong>\n#60\u79d2\u4e4b\u540e<\/strong>\nmmm:SECONDARY> db.test.count()\n20500<\/pre>\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/nick.txtcc.com\/wp-content\/uploads\/remote_image\/2017\/09\/074352BbA.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"><\/a><\/span><\/div>\n<\/div>\n<p>\u4e0a\u9762\u8bf4\u660edelayed\u80fd\u591f\u6210\u529f\u7684\u628a\u540c\u6b65\u64cd\u4f5c\u5ef6\u8fdf60\u79d2\u6267\u884c\u3002\u9664\u4e86\u4e0a\u9762\u7684\u6210\u5458\u4e4b\u5916\uff0c\u8fd8\u6709\uff1a<\/p>\n<p><strong>Secondary-Only:<\/strong>\u4e0d\u80fd\u6210\u4e3aprimary\u8282\u70b9\uff0c\u53ea\u80fd\u4f5c\u4e3asecondary\u526f\u672c\u8282\u70b9\uff0c\u9632\u6b62\u4e00\u4e9b\u6027\u80fd\u4e0d\u9ad8\u7684\u8282\u70b9\u6210\u4e3a\u4e3b\u8282\u70b9\u3002<\/p>\n<p><strong>Non-Voting\uff1a<\/strong>\u6ca1\u6709\u9009\u4e3e\u6743\u7684secondary\u8282\u70b9\uff0c\u7eaf\u7cb9\u7684\u5907\u4efd\u6570\u636e\u8282\u70b9\u3002<\/p>\n<p><strong>\u5177\u4f53\u6210\u5458\u4fe1\u606f\u5982\u4e0b\uff1a<\/strong><\/p>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td valign=\"top\" width=\"117\"><\/td>\n<td valign=\"top\" width=\"99\">\u6210\u4e3aprimary<\/td>\n<td valign=\"top\" width=\"89\">\u5bf9\u5ba2\u6237\u7aef\u53ef\u89c1<\/td>\n<td valign=\"top\" width=\"89\">\u53c2\u4e0e\u6295\u7968<\/td>\n<td valign=\"top\" width=\"89\">\u5ef6\u8fdf\u540c\u6b65<\/td>\n<td valign=\"top\" width=\"85\">\u590d\u5236\u6570\u636e<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\" width=\"117\">Default<\/td>\n<td valign=\"top\" width=\"99\">\u221a<\/td>\n<td valign=\"top\" width=\"89\">\u221a<\/td>\n<td valign=\"top\" width=\"89\">\u221a<\/td>\n<td valign=\"top\" width=\"89\">\u2215<\/td>\n<td valign=\"top\" width=\"85\">\u221a<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\" width=\"117\">Secondary-Only<\/td>\n<td valign=\"top\" width=\"99\">\u2215<\/td>\n<td valign=\"top\" width=\"89\">\u221a<\/td>\n<td valign=\"top\" width=\"89\">\u221a<\/td>\n<td valign=\"top\" width=\"89\">\u2215<\/td>\n<td valign=\"top\" width=\"85\">\u221a<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\" width=\"117\">Hidden<\/td>\n<td valign=\"top\" width=\"99\">\u2215<\/td>\n<td valign=\"top\" width=\"89\">\u2215<\/td>\n<td valign=\"top\" width=\"89\">\u221a<\/td>\n<td valign=\"top\" width=\"89\">\u2215<\/td>\n<td valign=\"top\" width=\"85\">\u221a<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\" width=\"117\">Delayed<\/td>\n<td valign=\"top\" width=\"99\">\u2215<\/td>\n<td valign=\"top\" width=\"89\">\u221a<\/td>\n<td valign=\"top\" width=\"89\">\u221a<\/td>\n<td valign=\"top\" width=\"89\">\u221a<\/td>\n<td valign=\"top\" width=\"85\">\u221a<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\" width=\"117\">Arbiters<\/td>\n<td valign=\"top\" width=\"99\">\u2215<\/td>\n<td valign=\"top\" width=\"89\">\u2215<\/td>\n<td valign=\"top\" width=\"89\">\u221a<\/td>\n<td valign=\"top\" width=\"89\">\u2215<\/td>\n<td valign=\"top\" width=\"85\">\u2215<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\" width=\"117\">Non-Voting<\/td>\n<td valign=\"top\" width=\"99\">\u221a<\/td>\n<td valign=\"top\" width=\"89\">\u221a<\/td>\n<td valign=\"top\" width=\"89\">\u2215<\/td>\n<td valign=\"top\" width=\"89\">\u2215<\/td>\n<td valign=\"top\" width=\"85\">\u221a<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>5\uff1a\u8bfb\u5199\u5206\u79bb<\/strong><\/p>\n<p>MongoDB\u526f\u672c\u96c6\u5bf9\u8bfb\u5199\u5206\u79bb\u7684\u652f\u6301\u662f\u901a\u8fc7Read Preferences\u7279\u6027\u8fdb\u884c\u652f\u6301\u7684\uff0c\u8fd9\u4e2a\u7279\u6027\u975e\u5e38\u590d\u6742\u548c\u7075\u6d3b\u3002<\/p>\n<p>\u5e94\u7528\u7a0b\u5e8f\u9a71\u52a8\u901a\u8fc7read reference\u6765\u8bbe\u5b9a\u5982\u4f55\u5bf9\u526f\u672c\u96c6\u8fdb\u884c\u8bfb\u53d6\u64cd\u4f5c\uff0c\u9ed8\u8ba4\u7684,\u5ba2\u6237\u7aef\u9a71\u52a8\u6240\u6709\u7684\u8bfb\u64cd\u4f5c\u90fd\u662f\u76f4\u63a5\u8bbf\u95eeprimary\u8282\u70b9\u7684\uff0c\u4ece\u800c\u4fdd\u8bc1\u4e86\u6570\u636e\u7684\u4e25\u683c\u4e00\u81f4\u6027\u3002<\/p>\n<p>\u652f\u6301<strong>\u4e94\u79cd\u7684read preference\u6a21\u5f0f<\/strong>\uff1a<a href=\"http:\/\/docs.mongodb.org\/manual\/applications\/replication\/#replica-set-read-preference\">\u5b98\u7f51\u8bf4\u660e<\/a><\/p>\n<div class=\"cnblogs_code\">\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/nick.txtcc.com\/wp-content\/uploads\/remote_image\/2017\/09\/074352BbA.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"><\/a><\/span><\/div>\n<pre><strong>primary<\/strong>\n\u4e3b\u8282\u70b9\uff0c\u9ed8\u8ba4\u6a21\u5f0f\uff0c\u8bfb\u64cd\u4f5c\u53ea\u5728\u4e3b\u8282\u70b9\uff0c\u5982\u679c\u4e3b\u8282\u70b9\u4e0d\u53ef\u7528\uff0c\u62a5\u9519\u6216\u8005\u629b\u51fa\u5f02\u5e38\u3002\n<strong>primaryPreferred<\/strong>\n\u9996\u9009\u4e3b\u8282\u70b9\uff0c\u5927\u591a\u60c5\u51b5\u4e0b\u8bfb\u64cd\u4f5c\u5728\u4e3b\u8282\u70b9\uff0c\u5982\u679c\u4e3b\u8282\u70b9\u4e0d\u53ef\u7528\uff0c\u5982\u6545\u969c\u8f6c\u79fb\uff0c\u8bfb\u64cd\u4f5c\u5728\u4ece\u8282\u70b9\u3002\n<strong>secondary<\/strong>\n\u4ece\u8282\u70b9\uff0c\u8bfb\u64cd\u4f5c\u53ea\u5728\u4ece\u8282\u70b9\uff0c \u5982\u679c\u4ece\u8282\u70b9\u4e0d\u53ef\u7528\uff0c\u62a5\u9519\u6216\u8005\u629b\u51fa\u5f02\u5e38\u3002\n<strong>secondaryPreferred<\/strong>\n\u9996\u9009\u4ece\u8282\u70b9\uff0c\u5927\u591a\u60c5\u51b5\u4e0b\u8bfb\u64cd\u4f5c\u5728\u4ece\u8282\u70b9\uff0c\u7279\u6b8a\u60c5\u51b5\uff08\u5982\u5355\u4e3b\u8282\u70b9\u67b6\u6784\uff09\u8bfb\u64cd\u4f5c\u5728\u4e3b\u8282\u70b9\u3002\n<strong>nearest<\/strong>\n\u6700\u90bb\u8fd1\u8282\u70b9\uff0c\u8bfb\u64cd\u4f5c\u5728\u6700\u90bb\u8fd1\u7684\u6210\u5458\uff0c\u53ef\u80fd\u662f\u4e3b\u8282\u70b9\u6216\u8005\u4ece\u8282\u70b9\uff0c\u5173\u4e8e\u6700\u90bb\u8fd1\u7684\u6210\u5458\u8bf7\u53c2\u8003\n<\/pre>\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/nick.txtcc.com\/wp-content\/uploads\/remote_image\/2017\/09\/074352BbA.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"><\/a><\/span><\/div>\n<\/div>\n<p>\u6ce8\u610f\uff1a2.2\u7248\u672c\u4e4b\u524d\u7684MongoDB\u5bf9Read Preference\u652f\u6301\u7684\u8fd8\u4e0d\u5b8c\u5168\uff0c\u5982\u679c\u5ba2\u6237\u7aef\u9a71\u52a8\u91c7\u7528primaryPreferred\u5b9e\u9645\u4e0a\u8bfb\u53d6\u64cd\u4f5c\u90fd\u4f1a\u88ab\u8def\u7531\u5230secondary\u8282\u70b9\u3002<\/p>\n<p>\u56e0\u4e3a\u8bfb\u5199\u5206\u79bb\u662f\u901a\u8fc7\u4fee\u6539\u7a0b\u5e8f\u7684driver\u7684\uff0c\u6545\u8fd9\u91cc\u5c31\u4e0d\u505a\u8bf4\u660e\uff0c\u5177\u4f53\u7684\u53ef\u4ee5\u53c2\u8003\u8fd9\u7bc7<a href=\"http:\/\/blog.chinaunix.net\/uid-15795819-id-3075952.html\">\u6587\u7ae0<\/a>\u6216\u5219\u53ef\u4ee5\u5728google\u4e0a\u67e5\u9605\u3002<\/p>\n<p><strong>\u9a8c\u8bc1\uff1a\uff08Python\uff09<\/strong><\/p>\n<p>\u901a\u8fc7python\u6765\u9a8c\u8bc1MongoDB ReplSet\u7684\u7279\u6027\u3002<\/p>\n<p><strong>1\uff1a\u4e3b\u8282\u70b9\u65ad\u5f00\uff0c\u770b\u662f\u5426\u5f71\u54cd\u5199\u5165<\/strong><\/p>\n<p>\u811a\u672c\uff1a<\/p>\n<div class=\"cnblogs_code\">\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/nick.txtcc.com\/wp-content\/uploads\/remote_image\/2017\/09\/074352BbA.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"><\/a><\/span><\/div>\n<pre>#coding:utf-8\nimport time\nfrom pymongo import ReplicaSetConnection\nconn = ReplicaSetConnection(\"192.168.200.201:27017,192.168.200.202:27017,192.168.200.204:27017\", replicaSet=\"drug\",read_preference=2, safe=True)\n#\u6253\u5370Primary\u670d\u52a1\u5668\n#print conn.primary\n#\u6253\u5370\u6240\u6709\u670d\u52a1\u5668\n#print conn.seeds\n#\u6253\u5370Secondary\u670d\u52a1\u5668\n#print conn.secondaries\n\n#print conn.read_preference\n#print conn.server_info()\nfor i in xrange(1000):\n    try:\n        conn.test.tt.insert({\"name\":\"test\" + str(i)})\n        time.sleep(1)\n        print conn.primary\n        print conn.secondaries\n    except:\n        pass<\/pre>\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/nick.txtcc.com\/wp-content\/uploads\/remote_image\/2017\/09\/074352BbA.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"><\/a><\/span><\/div>\n<\/div>\n<p>\u811a\u672c\u6267\u884c\u6253\u5370\u51fa\u7684\u5185\u5bb9\uff1a<\/p>\n<div class=\"cnblogs_code\"><img decoding=\"async\" id=\"code_img_closed_ecd21ea3-812b-486e-9277-d69b4f3b615c\" class=\"code_img_closed\" src=\"http:\/\/nick.txtcc.com\/wp-content\/uploads\/remote_image\/2017\/09\/0743531SH.gif\" alt=\"\"> <span class=\"cnblogs_code_collapse\">View Code<\/span><\/div>\n<p>\u4f53\u64cd\u4f5c\u5982\u4e0b\uff1a<\/p>\n<p>\u5728\u6267\u884c\u811a\u672c\u7684\u65f6\u5019\uff0c\u6a21\u62dfPrimary\u5b95\u673a\uff0c\u518d\u628a\u5176\u5f00\u542f\u3002\u770b\u5230\u5176\u4ece201\uff08Primary\uff09\u4e0a\u8fc1\u79fb\u5230202\u4e0a\uff0c201\u53d8\u6210\u4e86Secondary\u3002\u67e5\u770b\u63d2\u5165\u7684\u6570\u636e\u53d1\u73b0\u5176\u4e2d\u95f4\u6709\u4e00\u6bb5\u6570\u636e\u4e22\u5931\u4e86\u3002<\/p>\n<div class=\"cnblogs_code\">\n<pre>{ \"name\" : \"GOODODOO15\" }\n{ \"name\" : \"GOODODOO592\" }\n{ \"name\" : \"GOODODOO593\" }<\/pre>\n<\/div>\n<p>\u5176\u5b9e\u8fd9\u90e8\u5206\u6570\u636e\u662f\u7531\u4e8e\u5728\u9009\u4e3e\u8fc7\u7a0b\u671f\u95f4\u4e22\u5931\u7684\uff0c\u8981\u662f\u4e0d\u5141\u8bb8\u6570\u636e\u4e22\u5931\uff0c\u5219\u628a\u5728\u9009\u4e3e\u671f\u95f4\u7684\u6570\u636e\u653e\u5230\u961f\u5217\u4e2d\uff0c\u7b49\u5230\u627e\u5230\u65b0\u7684Primary\uff0c\u518d\u5199\u5165\u3002<\/p>\n<p>\u4e0a\u9762\u7684\u811a\u672c\u53ef\u80fd\u4f1a\u51fa\u73b0\u64cd\u4f5c\u65f6\u9000\u51fa\uff0c\u8fd9\u8981\u770bxrange()\u91cc\u7684\u6570\u91cf\u4e86\uff0c\u6240\u4ee5\u7528\u4e00\u4e2a\u5faa\u73af\u4fee\u6539\uff08\u66f4\u76f4\u89c2\uff09\uff1a<\/p>\n<div class=\"cnblogs_code\">\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/nick.txtcc.com\/wp-content\/uploads\/remote_image\/2017\/09\/074352BbA.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"><\/a><\/span><\/div>\n<pre>#coding:utf-8\nimport time\nfrom pymongo import ReplicaSetConnection\nconn = ReplicaSetConnection(\"192.168.200.201:27017,192.168.200.202:27017,192.168.200.204:27017\", replicaSet=\"drug\",read_preference=2, safe=True)\n\n#\u6253\u5370Primary\u670d\u52a1\u5668\n#print conn.primary\n#\u6253\u5370\u6240\u6709\u670d\u52a1\u5668\n#print conn.seeds\n#\u6253\u5370Secondary\u670d\u52a1\u5668\n#print conn.secondaries\n\n#print conn.read_preference\n#print conn.server_info()\n\nwhile True:\n    try:\n        for i in xrange(100):\n            conn.test.tt.insert({\"name\":\"test\" + str(i)})\n            print \"test\" + str(i)\n            time.sleep(2)\n            print conn.primary\n            print conn.secondaries\n            print '\\n'\n    except:\n        pass<\/pre>\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/nick.txtcc.com\/wp-content\/uploads\/remote_image\/2017\/09\/074352BbA.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"><\/a><\/span><\/div>\n<\/div>\n<p><strong>\u4e0a\u9762\u7684\u5b9e\u9a8c\u8bc1\u660e\u4e86\uff1a<\/strong>\u5728Primary\u5b95\u673a\u7684\u65f6\u5019\uff0c\u7a0b\u5e8f\u811a\u672c\u4ecd\u53ef\u4ee5\u5199\u5165\uff0c\u4e0d\u9700\u8981\u4eba\u4e3a\u7684\u53bb\u5e72\u9884\u3002\u53ea\u662f\u671f\u95f4\u9700\u898110s\u5de6\u53f3\uff08\u9009\u4e3e\u65f6\u95f4\uff09\u7684\u65f6\u95f4\u4f1a\u51fa\u73b0\u4e0d\u53ef\u7528\uff0c\u8fdb\u4e00\u6b65\u8bf4\u660e\uff0c\u5199\u64cd\u4f5c\u65f6\u5728Primary\u4e0a\u8fdb\u884c\u7684\u3002<\/p>\n<p><strong>2\uff1a\u4e3b\u8282\u70b9\u65ad\u5f00\uff0c\u770b\u662f\u5426\u5f71\u54cd\u8bfb\u53d6<\/strong><\/p>\n<p>\u811a\u672c\uff1a<\/p>\n<div class=\"cnblogs_code\">\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/nick.txtcc.com\/wp-content\/uploads\/remote_image\/2017\/09\/074352BbA.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"><\/a><\/span><\/div>\n<pre>#coding:utf-8\nimport time\nfrom pymongo import ReplicaSetConnection\nconn = ReplicaSetConnection(\"192.168.200.201:27017,192.168.200.202:27017,192.168.200.204:27017\", replicaSet=\"drug\",read_preference=2, safe=True)\n\n#\u6253\u5370Primary\u670d\u52a1\u5668\n#print conn.primary\n#\u6253\u5370\u6240\u6709\u670d\u52a1\u5668\n#print conn.seeds\n#\u6253\u5370Secondary\u670d\u52a1\u5668\n#print conn.secondaries\n\n#print conn.read_preference\n#print conn.server_info()\n\nfor i in xrange(1000):\n\n    time.sleep(1)\n    obj=conn.test.tt.find({},{\"_id\":0,\"name\":1}).skip(i).limit(1)\n    for item in obj:\n        print item.values()\n    print conn.primary\n    print conn.secondaries<\/pre>\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/nick.txtcc.com\/wp-content\/uploads\/remote_image\/2017\/09\/074352BbA.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"><\/a><\/span><\/div>\n<\/div>\n<p>\u811a\u672c\u6267\u884c\u6253\u5370\u51fa\u7684\u5185\u5bb9\uff1a<\/p>\n<div class=\"cnblogs_code\"><img decoding=\"async\" id=\"code_img_closed_756c2d27-f3ba-4c5e-96f5-a0da5f873709\" class=\"code_img_closed\" src=\"http:\/\/nick.txtcc.com\/wp-content\/uploads\/remote_image\/2017\/09\/0743531SH.gif\" alt=\"\"> <span class=\"cnblogs_code_collapse\">View Code<\/span><\/div>\n<p>\u5177\u4f53\u64cd\u4f5c\u5982\u4e0b\uff1a<\/p>\n<p>\u5728\u6267\u884c\u811a\u672c\u7684\u65f6\u5019\uff0c\u6a21\u62dfPrimary\u5b95\u673a\uff0c\u518d\u628a\u5176\u5f00\u542f\u3002\u770b\u5230201\uff08Primary\uff09\u4e0a\u8fc1\u79fb\u5230202\u4e0a\uff0c201\u53d8\u6210\u4e86Secondary\uff0c\u8bfb\u53d6\u6570\u636e\u6ca1\u6709\u95f4\u65ad\u3002\u518d\u8ba9Primary\u5b95\u673a\uff0c\u4e0d\u5f00\u542f\uff0c\u8bfb\u53d6\u4e5f\u4e0d\u53d7\u5f71\u54cd\u3002<\/p>\n<p><strong>\u4e0a\u9762\u7684\u5b9e\u9a8c\u8bc1\u660e\u4e86\uff1a<\/strong>\u5728Primary\u5b95\u673a\u7684\u65f6\u5019\uff0c\u7a0b\u5e8f\u811a\u672c\u4ecd\u53ef\u4ee5\u8bfb\u53d6\uff0c\u4e0d\u9700\u8981\u4eba\u4e3a\u7684\u53bb\u5e72\u9884\u3002\u4e00\u8fdb\u6b65\u8bf4\u660e\uff0c\u8bfb\u53d6\u662f\u5728Secondary\u4e0a\u9762\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>1\u3002\u51bb\u7ed3\u5176\u4e2d\u7684\u4e00\u4e2a\u4ece\u8282\u70b9\uff0c\u4f7f\u5176\u4e0d\u53c2\u4e0e\u5230\u4e0eprimary \u7684\u5185\u90e8\u9009\u4e3e\u5de5\u4f5c<wbr \/><\/p>\n<div>\u00a0 \u8fdb\u5165\u5ba2\u6237\u7aef,\u6267\u884c(\u5355\u4f4d:\u79d2)<\/div>\n<div>\u00a0 rs.freeze(30);<\/div>\n<div><\/div>\n<div>2.\u5bf9\u539f\u4e3b\u8282\u70b9\u8fdb\u884c\u964d\u7ea7<\/div>\n<div>\u8fdb\u5165\u5ba2\u6237\u7aef,\u6267\u884c\u4e0b\u9762\u4ee3\u7801 (\u5355\u4f4d:\u79d2)<\/div>\n<div>rs.stepDown(15);<\/div>\n<div>3.\u7ecf\u8fc7\u51bb\u7ed3\u548c\u964d\u7ea7\u4e4b\u540e\u67e5\u770b\u590d\u5236\u96c6\u72b6\u6001<\/div>\n<div>rs.status();<\/div>\n<div>\u590d\u5236\u96c6\u987a\u5229\u5207\u6362<\/div>","protected":false},"excerpt":{"rendered":"<p>\u6982\u5ff5\uff1a \u5728\u4e86\u89e3\u4e86\u8fd9\u7bc7\u6587\u7ae0\u4e4b\u540e\uff0c\u53ef\u4ee5\u8fdb\u884c\u8be5\u7bc7\u6587\u7ae0\u7684\u8bf4\u660e\u548c\u6d4b\u8bd5\u3002MongoDB \u526f\u672c\u96c6\uff08Replica Set\uff09\u662f\u6709\u81ea\u52a8\u6545\u969c\u6062\u590d\u529f\u80fd\u7684\u4e3b\u4ece\u96c6\u7fa4\uff0c\u6709\u4e00\u4e2aPrimary\u8282\u70b9\u548c\u4e00\u4e2a\u6216\u591a\u4e2aSecondary\u8282\u70b9\u7ec4&#46;&#46;&#46;<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[395],"class_list":["post-1382","post","type-post","status-publish","format-standard","hentry","category-db","tag-mongo"],"_links":{"self":[{"href":"https:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/posts\/1382","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/comments?post=1382"}],"version-history":[{"count":3,"href":"https:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/posts\/1382\/revisions"}],"predecessor-version":[{"id":1660,"href":"https:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/posts\/1382\/revisions\/1660"}],"wp:attachment":[{"href":"https:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/media?parent=1382"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/categories?post=1382"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/tags?post=1382"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}