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keyfile是mongodb副本集的实例之间的权限认证,要求如下:
1, keyfile文件的权限必须是600; 2,keyfile文件的内容比如完全相同。
如果keyfile文件内容不同,那么该实例添加到副本集的时候,会出现不可达的状态:
在主库上执行如下命令来添加一个副本集实例: rs.add("xxx:27003"); rs.status();
"name" : "xxx:27003", "health" : 0, "state" : 6, "stateStr" : "(not reachable/healthy)", "uptime" : 0, "optime" : { "ts" : Timestamp(0, 0), "t" : NumberLong(-1) }, "optimeDurable" : { "ts" : Timestamp(0, 0), "t" : NumberLong(-1) }, "optimeDate" : ISODate("1970-01-01T00:00:00Z"), "optimeDurableDate" : ISODate("1970-01-01T00:00:00Z"), "lastHeartbeat" : ISODate("2021-03-29T02:41:09.636Z"), "lastHeartbeatRecv" : ISODate("1970-01-01T00:00:00Z"), "pingMs" : NumberLong(0), "lastHeartbeatMessage" : "", "authenticated" : false, "syncingTo" : "", "syncSourceHost" : "", "syncSourceId" : -1, "infoMessage" : "", "configVersion" : -1
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