Mongodb db.serverStatus()所关心的几个输出值

1. globalLock，关键是看一下PRIMARY节点上的参数

"globalLock" : {

                                "totalTime" : 47279680356,

                                "lockTime" : 1586763,

                                "ratio" : 0.00003356120405324679,

                                "currentQueue" : {

                                                "total" : 0,

                                                "readers" : 0,

                                                "writers" : 0

                                },

                                "activeClients" : {

                                                "total" : 2,

                                                "readers" : 2,

                                                "writers" : 0

                                }

                },

activeClients表示中可以看出slave有两个，这个值在slave上始终为0

2. connections客户端连接数

Master上的

"connections" : {

        "current" : 9,

        "available" : 810

},

Slave上的

"connections" : {

     &quo