mongo副本集搭建

任意一台：
>use admin
>cfg={ _id:"mongo-repl", members:[
{_id:0,host:‘192.168.32.101:27017‘,priority:2},
{_id:1,host:‘192.168.32.102:27017‘,priority:1},
{_id:2,host:‘192.168.32.101:27018‘,arbiterOnly:true}]}

初始化副本集：rs.initiate(cfg)

需要做主库上操作：
use admin
cfg={ _id:"mongo-repl", members:[
{_id:0,host:‘192.168.32.101:27017‘,priority:2},
{_id:1,host:‘192.168.32.102:27017‘,priority:1},
{_id:2,host:‘192.168.32.101:27018‘,arbiterOnly:true}]}

重建副本集：rs.reconfig(cfg)
删除一个节点：rs.remove("192.168.32.102:27017")
添加一个节点：rs.add(hostportstr)

mongo副本集搭建