Replica Set配置一个隐藏的副本集成员

一、Hidden Replica Set既不能变成Primary也不能被客户端访问，但是拥有投票选举的权利；

二、The most common use of hidden nodes is to support delayed members. If you only need to prevent a member from becoming primary, configure a priority 0 member.

      最常用的隐藏节点是支持延迟成员。如果只需要阻止成员成为主要成员，则配置优先级为0的成员。

三、To configure a secondary member as hidden, set its members
.priority value to 0 and set its members
.hidden value to true in its member configuration:

        将一个副节点配置成隐藏节点，首先要将members
.priority 值设置成0和members
.hidden值设置为true

四、连接上主节点输入一下指令将副本成员节点更改为隐藏成员

       

cfg = rs.conf()
cfg.members[0].priority = 0
cfg.members[0].hidden = true
rs.reconfig(cfg)