mongodb的監控

監控思路：一個是集羣成員的健康狀態，一個是鏈接數

1.經過命令rs.status()進行集羣內成員健康

MongoDB Enterprise config-rs:PRIMARY> rs.status()
{
        "set" : "config-rs",       # 副本集已經配置成功
        "date" : ISODate("2019-11-23T04:56:35.588Z"),
        "myState" : 1,
        "term" : NumberLong(1),
        "syncingTo" : "",
        "syncSourceHost" : "",
        "syncSourceId" : -1,
        "configsvr" : true,
        "heartbeatIntervalMillis" : NumberLong(2000),
        "majorityVoteCount" : 2,
        "writeMajorityCount" : 2,
        "optimes" : {
                "lastCommittedOpTime" : {
                        "ts" : Timestamp(1574484982, 1),
                        "t" : NumberLong(1)
                },
                "lastCommittedWallTime" : ISODate("2019-11-23T04:56:22.464Z"),
                "readConcernMajorityOpTime" : {
                        "ts" : Timestamp(1574484982, 1),
                        "t" : NumberLong(1)
                },
                "readConcernMajorityWallTime" : ISODate("2019-11-23T04:56:22.464Z"),
                "appliedOpTime" : {
                        "ts" : Timestamp(1574484982, 1),
                        "t" : NumberLong(1)
                },
                "durableOpTime" : {
                        "ts" : Timestamp(1574484982, 1),
                        "t" : NumberLong(1)
                },
                "lastAppliedWallTime" : ISODate("2019-11-23T04:56:22.464Z"),
                "lastDurableWallTime" : ISODate("2019-11-23T04:56:22.464Z")
        },
        "lastStableRecoveryTimestamp" : Timestamp(1574484952, 30),
        "lastStableCheckpointTimestamp" : Timestamp(1574484952, 30),
        "electionCandidateMetrics" : {
                "lastElectionReason" : "electionTimeout",
                "lastElectionDate" : ISODate("2019-11-23T04:55:51.134Z"),
                "termAtElection" : NumberLong(1),
                "lastCommittedOpTimeAtElection" : {
                        "ts" : Timestamp(0, 0),
                        "t" : NumberLong(-1)
                },
                "lastSeenOpTimeAtElection" : {
                        "ts" : Timestamp(1574484951, 1),
                        "t" : NumberLong(-1)
                },
                "numVotesNeeded" : 1,
                "priorityAtElection" : 1,
                "electionTimeoutMillis" : NumberLong(10000),
                "newTermStartDate" : ISODate("2019-11-23T04:55:52.141Z"),
                "wMajorityWriteAvailabilityDate" : ISODate("2019-11-23T04:55:52.266Z")
        },
        "members" : [
                {
                        "_id" : 0,
                        "name" : "worker2:27018",
                        "ip" : "192.168.255.134",
                        "health" : 1,         # 監控該值，不是1就實現告警
                        "state" : 1,
                        "stateStr" : "PRIMARY",
                        "uptime" : 722,
                        "optime" : {
                                "ts" : Timestamp(1574484982, 1),
                                "t" : NumberLong(1)
                        },
                        "optimeDate" : ISODate("2019-11-23T04:56:22Z"),
                        "syncingTo" : "",
                        "syncSourceHost" : "",
                        "syncSourceId" : -1,
                        "infoMessage" : "could not find member to sync from",
                        "electionTime" : Timestamp(1574484951, 2),
                        "electionDate" : ISODate("2019-11-23T04:55:51Z"),
                        "configVersion" : 2,
                        "self" : true,
                        "lastHeartbeatMessage" : ""
                },
                {
                        "_id" : 1,
                        "name" : "worker2:27019",
                        "ip" : "192.168.255.134",
                        "health" : 1,
                        "state" : 2,
                        "stateStr" : "SECONDARY",
                        "uptime" : 13,
                        "optime" : {
                                "ts" : Timestamp(1574484982, 1),
                                "t" : NumberLong(1)
                        },
                        "optimeDurable" : {
                                "ts" : Timestamp(1574484982, 1),
                                "t" : NumberLong(1)
                        },
                        "optimeDate" : ISODate("2019-11-23T04:56:22Z"),
                        "optimeDurableDate" : ISODate("2019-11-23T04:56:22Z"),
                        "lastHeartbeat" : ISODate("2019-11-23T04:56:34.705Z"),
                        "lastHeartbeatRecv" : ISODate("2019-11-23T04:56:35.176Z"),
                        "pingMs" : NumberLong(0),
                        "lastHeartbeatMessage" : "",
                        "syncingTo" : "",
                        "syncSourceHost" : "",
                        "syncSourceId" : -1,
                        "infoMessage" : "",
                        "configVersion" : 2
                }
        ],
        "ok" : 1,
        "$gleStats" : {
                "lastOpTime" : {
                        "ts" : Timestamp(1574484982, 1),
                        "t" : NumberLong(1)
                },
                "electionId" : ObjectId("7fffffff0000000000000001")
        },
        "lastCommittedOpTime" : Timestamp(1574484982, 1),
        "$clusterTime" : {
                "clusterTime" : Timestamp(1574484982, 1),
                "signature" : {
                        "hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
                        "keyId" : NumberLong(0)
                }
        },
        "operationTime" : Timestamp(1574484982, 1)
}
分段
說明
set
當前副本集名稱
date
執行命令時間
myState
當前節點的狀態(角色)
syncingTo
同步源
heartbeatIntervalMillis
心跳間隔
members
節點成員
members.id
成員編號
members.name
成員名稱
members.heath
健康狀態，1-true,0-false    監控該值，爲0結合zabbix則告警
members.state
成員狀態(角色)1-主節點 2-備節點 7-仲裁節點
members.stateStr
成員狀態名
members.uptime
成員啓動運行時長
members.optime
成員oplog時間戳(字段ts)
members.optimeDate
成員oplog時間(格式化)
members.lastHeartbeat
當前節點對成員的最後一個心跳
members.lastHeartbeatRecv
當前節點收到該成員的最後一個心跳
members.pingMs
當前節點到該成員的迴路時長
members.syncingTo
成員同步源
members.electionTime
主節點選舉時間戳(ms)
members.electionDate
主節點選舉時間(格式化)

2.經過mongostat監控conn鏈接數字段

$ mongostat --host 192.168.255.134 --port 27017  -u adminUser -p adminPass --authenticationDatabase="admin" —json

{"192.168.255.134:27017":{"arw":"1|0","command":"2|0","conn":"2","delete":"*0","dirty":"0.0%","flushes":"0","getmore":"0","insert":"*0","net_in":"167b","net_out":"35.4k","qrw":"0|0","query":"*0","res":"83.0M","time":"14:27:26","update":"*0","used":"0.0%","vsize":"1.52G"}}

3.能夠引入pymongo模塊進行監控，具體腳本就不貼出了，比較簡單。鏈接數默認大於2000就有問題，也能夠結合zabbix進行自定義監控，大於2000的鏈接數就觸發告警