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Shankar Nagarajan

Shankar Nagarajan

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  1. Nats cluster config: check /usr/local/omk/conf/opCommon.json on all the vms including Main Pri, Sec Pri, Pollers, Mirrors)

    Code Block
    omkadmin@lab-ophamb-mp01:/usr/local/omk/conf$ grep -a4 nats_cluster /usr/local/omk/conf/opCommon.json
      "db_use_v26_features" : 1,
      "redis_port" : 6379,
      "redis_server" : "localhost",
      "db_port" : "27017",
      "nats_cluster" : [
         “Main Primary ,
         “Sec Primary”,
         “New Arbiter Poller”
      ],

     

  2. Nats number of replicas setting: check /usr/local/omk/conf/opCommon.json on all the vms including Main Pri, Sec Pri, Pollers, Mirrors)

    Code Block
    omkadmin@lab-ophamb-mp01:/usr/local/omk/conf$ grep nats_num_replicas /usr/local/omk/conf/opCommon.json
      "nats_num_replicas" : 1,

  3.   Mongo cluster heartbeat check on Main Primary

    Code Block
    shankarn@opha-dev4:/usr/local/omk/conf$ mongosh --username opUserRW --password op42flow42 admin --port 27017
rs1 [direct: primary] admin> rs.status()
{
   ...
  members: [
    {
      _id: 0,
      name: 'opha-dev4.opmantek.net:27017',
      health: 1,
      state: 1,
      stateStr: 'PRIMARY',
      uptime: 17503,
      optime: { ts: Timestamp({ t: 1763526818, i: 9 }), t: Long('7') },
      optimeDate: ISODate('2025-11-19T04:33:38.000Z'),
      lastAppliedWallTime: ISODate('2025-11-19T04:33:38.225Z'),
      lastDurableWallTime: ISODate('2025-11-19T04:33:38.190Z'),
    },
    {
      _id: 1,
      name: 'opha-dev7.opmantek.net:27017',
      health: 1,
      state: 2,
      stateStr: 'SECONDARY',
      uptime: 17496,
      optime: { ts: Timestamp({ t: 1763526814, i: 1 }), t: Long('7') },
      optimeDurable: { ts: Timestamp({ t: 1763526814, i: 1 }), t: Long('7') },
      optimeDate: ISODate('2025-11-19T04:33:34.000Z'),
      optimeDurableDate: ISODate('2025-11-19T04:33:34.000Z'),
      lastAppliedWallTime: ISODate('2025-11-19T04:33:38.225Z'),
      lastDurableWallTime: ISODate('2025-11-19T04:33:38.225Z'),
      lastHeartbeat: ISODate('2025-11-19T04:33:36.300Z'),
      lastHeartbeatRecv: ISODate('2025-11-19T04:33:37.493Z'),
    },
    {
      _id: 2,
      name: 'opha-dev6.opmantek.net:27018',
      health: 1,
      state: 7,
      stateStr: 'ARBITER',
      uptime: 17496,
      lastHeartbeat: ISODate('2025-11-19T04:33:36.301Z'),
      lastHeartbeatRecv: ISODate('2025-11-19T04:33:36.290Z'),
    }
  ],

Scenario 1 : Using opHA4 ‘Pull’ on Primary to synchronize nmisng collections.

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