mongodb replica set

[BennyThink]

command: --replSet rs0

rs.initiate({
    _id: "rs0",
    members: [{
        _id: 0,
        host: "mongo1:27017"
    },
    {
        _id: 1,
        host: "mongo2:27017"
    }]
})

// 优先级
cfg = rs.conf()
cfg.members[0].priority = 0.5
cfg.members[1].priority = 0.5
cfg.members[2].priority = 1
rs.reconfig(cfg)