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一、删除副本集成员
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 | spock:PRIMARY> rs.config() { "_id" : "spock" , "version" : 1, "members" : [ { "_id" : 0, "host" : "192.168.1.112:27017" }, { "_id" : 1, "host" : "192.168.1.113:27017" } ] } spock:PRIMARY> rs.remove( "192.168.1.113:27017" ) { "errmsg" : "exception: can't find self in new replset config" , "code" : 13433, "ok" : 0 } spock:PRIMARY> rs.remove( "192.168.1.112:27017" ) 2015-02-02T21:59:13.303+0800 DBClientCursor::init call() failed 2015-02-02T21:59:13.304+0800 Error: error doing query: failed at src /mongo/shell/query .js:81 2015-02-02T21:59:13.305+0800 trying reconnect to 127.0.0.1:27017 (127.0.0.1) failed 2015-02-02T21:59:13.308+0800 reconnect 127.0.0.1:27017 (127.0.0.1) ok spock:PRIMARY> rs.config() { "_id" : "spock" , "version" : 2, "members" : [ { "_id" : 1, "host" : "192.168.1.113:27017" } ] } |
二、添加副本集成员
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 | spock:PRIMARY> rs.add( "192.168.1.112:27017" ) { "ok" : 1 } spock:PRIMARY> rs.config() { "_id" : "spock" , "version" : 3, "members" : [ { "_id" : 1, "host" : "192.168.1.113:27017" }, { "_id" : 2, "host" : "192.168.1.112:27017" } ] } |
从上述过程来看，配置文档中version字段都会自增，它的初始值为1；
三、或者通过rs.reconfig()函数修改副本集
例如，将host用主机名来替代ip地址
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 | [root@localhost ~] # ping host113 PING host113 (192.168.1.113) 56(84) bytes of data. 64 bytes from host113 (192.168.1.113): icmp_seq=1 ttl=64 time =0.060 ms 64 bytes from host113 (192.168.1.113): icmp_seq=2 ttl=64 time =0.030 ms 64 bytes from host113 (192.168.1.113): icmp_seq=3 ttl=64 time =0.026 ms 64 bytes from host113 (192.168.1.113): icmp_seq=4 ttl=64 time =1.04 ms --- host113 ping statistics --- 4 packets transmitted, 4 received, 0% packet loss, time 3001ms rtt min /avg/max/mdev = 0.026 /0 .289 /1 .041 /0 .434 ms [root@localhost ~] # mongo MongoDB shell version: 2.6.7 connecting to: test spock:PRIMARY> rs.config() { "_id" : "spock" , "version" : 3, "members" : [ { "_id" : 1, "host" : "192.168.1.113:27017" }, { "_id" : 2, "host" : "192.168.1.112:27017" } ] } spock:PRIMARY> var config=rs.config() spock:PRIMARY> config.members[0].host= "host113:27017" host113:27017 spock:PRIMARY> rs.reconfig(config) 2015-02-02T22:21:22.793+0800 DBClientCursor::init call() failed 2015-02-02T22:21:22.795+0800 trying reconnect to 127.0.0.1:27017 (127.0.0.1) faile 2015-02-02T22:21:22.797+0800 reconnect 127.0.0.1:27017 (127.0.0.1) ok reconnected to server after rs command ( which is normal) spock:PRIMARY> rs.config() { "_id" : "spock" , "version" : 4, "members" : [ { "_id" : 1, "host" : "host113:27017" }, { "_id" : 2, "host" : "192.168.1.112:27017" } ] } spock:PRIMARY> |
对于复杂的副本集配置，rs.reconfig函数修改比rs.add和rs.remove更有用；
本文转自 bannerpei 51CTO博客，原文链接：http://blog.51cto.com/281816327/1610912，如需转载请自行联系原作者