Getting error: message: 'no such cmd: replSetGetConfig' in mongo-sidecar about mongo-k8s-sidecar HOT 6 CLOSED

usr/bin/mongod --help for help and startup options
2017-05-25T10:16:23.550+0000 [initandlisten] MongoDB starting : pid=7 port=27017 dbpath=/data/db 64-bit host=09b982be4355
2017-05-25T10:16:23.550+0000 [initandlisten] db version v2.6.3
2017-05-25T10:16:23.550+0000 [initandlisten] git version: nogitversion
2017-05-25T10:16:23.550+0000 [initandlisten] OpenSSL version: OpenSSL 1.0.1f 6 Jan 2014
2017-05-25T10:16:23.550+0000 [initandlisten] build info: Linux fisher02 3.13.0-16-generic #36-Ubuntu SMP Tue Mar 4 23:03:28 UTC 2014 ppc64le BOOST_LIB_VERSION=1_55
2017-05-25T10:16:23.551+0000 [initandlisten] allocator: tcmalloc
2017-05-25T10:16:23.551+0000 [initandlisten] options: {}
2017-05-25T10:16:23.573+0000 [initandlisten] journal dir=/data/db/journal
2017-05-25T10:16:23.574+0000 [initandlisten] recover : no journal files present, no recovery needed
2017-05-25T10:16:24.450+0000 [initandlisten] preallocateIsFaster=true 8.92
2017-05-25T10:16:25.387+0000 [initandlisten] preallocateIsFaster=true 9.24
2017-05-25T10:16:27.273+0000 [initandlisten] preallocateIsFaster=true 9.3
2017-05-25T10:16:27.274+0000 [initandlisten] preallocateIsFaster check took 3.7 secs

replSetReconfig { _id: 'rs0',
  version: 148080,
  members: 
   [ { _id: 1,
       host: '10.1.23.157:27017',
       arbiterOnly: false,
       buildIndexes: true,
       hidden: false,
       priority: 1,
       tags: {},
       slaveDelay: 0,
       votes: 1 },
     { _id: 2,
       host: '10.1.220.17:27017',
       arbiterOnly: false,
       buildIndexes: true,
       hidden: false,
       priority: 1,
       tags: {},
       slaveDelay: 0,
       votes: 1 },
     { _id: 4,
       host: '10.1.23.158:27017',
       arbiterOnly: false,
       buildIndexes: true,
       hidden: false,
       priority: 1,
       tags: {},
       slaveDelay: 0,
       votes: 1 },
     { _id: 5, host: '10.1.220.20:27017' },
     { _id: 6, host: '10.1.23.158:27017' },
     { _id: 7, host: '10.1.220.21:27017' } ],
  settings: 
   { chainingAllowed: true,
     heartbeatIntervalMillis: 2000,
     heartbeatTimeoutSecs: 10,
     electionTimeoutMillis: 10000,
     getLastErrorModes: {},
     getLastErrorDefaults: { w: 1, wtimeout: 0 } } }
Error in workloop { MongoError: Found two member configurations with same host field, members.2.host == members.4.host == 10.1.23.158:27017
    at Function.MongoError.create (/opt/cvallance/mongo-k8s-sidecar/node_modules/mongodb-core/lib/error.js:31:11)
    at /opt/cvallance/mongo-k8s-sidecar/node_modules/mongodb-core/lib/connection/pool.js:497:72
    at authenticateStragglers (/opt/cvallance/mongo-k8s-sidecar/node_modules/mongodb-core/lib/connection/pool.js:443:16)
    at Connection.messageHandler (/opt/cvallance/mongo-k8s-sidecar/node_modules/mongodb-core/lib/connection/pool.js:477:5)
    at Socket.<anonymous> (/opt/cvallance/mongo-k8s-sidecar/node_modules/mongodb-core/lib/connection/connection.js:321:22)
    at emitOne (events.js:96:13)
    at Socket.emit (events.js:191:7)
    at readableAddChunk (_stream_readable.js:178:18)
    at Socket.Readable.push (_stream_readable.js:136:10)
    at TCP.onread (net.js:561:20)
  name: 'MongoError',
  message: 'Found two member configurations with same host field, members.2.host == members.4.host == 10.1.23.158:27017',
  ok: 0,
  errmsg: 'Found two member configurations with same host field, members.2.host == members.4.host == 10.1.23.158:27017',
  code: 103 }