django - Node is not in primary or recovering state upon removal of instance from replication set -


i have 4 mongo instances in replication set, 1 of them obsolete , needs removed, when run rs.remove("hostname") django application instantly starts throwing node not in primary or recovering state upon removal of instance replication set until add instance in.

this rs.status()

    rs_pimapi:primary> rs.status() {         "set" : "rs_pimapi",         "date" : isodate("2017-07-28t01:27:05.607z"),         "mystate" : 1,         "term" : numberlong(-1),         "heartbeatintervalmillis" : numberlong(2000),         "optimes" : {                 "lastcommittedoptime" : {                         "ts" : timestamp(1501205225, 1),                         "t" : numberlong(-1)                 },                 "appliedoptime" : timestamp(1501205225, 1),                 "durableoptime" : timestamp(1501205222, 1)         },         "members" : [                 {                         "_id" : 25,                         "name" : "10.231.158.108:27017",                         "health" : 1,                         "state" : 1,                         "statestr" : "primary",                         "uptime" : 7212131,                         "optime" : timestamp(1501205225, 1),                         "optimedate" : isodate("2017-07-28t01:27:05z"),                         "electiontime" : timestamp(1500629818, 1),                         "electiondate" : isodate("2017-07-21t09:36:58z"),                         "configversion" : 278273,                         "self" : true                 },                 {                         "_id" : 29,                         "name" : "10.0.1.95:27017",                         "health" : 1,                         "state" : 2,                         "statestr" : "secondary",                         "uptime" : 20216,                         "optime" : timestamp(1501205222, 1),                         "optimedurable" : timestamp(1501205222, 1),                         "optimedate" : isodate("2017-07-28t01:27:02z"),                         "optimedurabledate" : isodate("2017-07-28t01:27:02z"),                         "lastheartbeat" : isodate("2017-07-28t01:27:04.286z"),                         "lastheartbeatrecv" : isodate("2017-07-28t01:27:04.373z"),                         "pingms" : numberlong(1),                         "syncingto" : "10.231.158.108:27017",                         "configversion" : 278273                 },                 {                         "_id" : 30,                         "name" : "10.0.0.213:27017",                         "health" : 1,                         "state" : 2,                         "statestr" : "secondary",                         "uptime" : 14382,                         "optime" : timestamp(1501205222, 1),                         "optimedurable" : timestamp(1501205222, 1),                         "optimedate" : isodate("2017-07-28t01:27:02z"),                         "optimedurabledate" : isodate("2017-07-28t01:27:02z"),                         "lastheartbeat" : isodate("2017-07-28t01:27:04.380z"),                         "lastheartbeatrecv" : isodate("2017-07-28t01:27:04.401z"),                         "pingms" : numberlong(1),                         "syncingto" : "10.0.1.95:27017",                         "configversion" : 278273                 },                 {                         "_id" : 31,                         "name" : "10.124.225.51:27017",                         "health" : 1,                         "state" : 2,                         "statestr" : "secondary",                         "uptime" : 6595,                         "optime" : timestamp(1501205222, 1),                         "optimedurable" : timestamp(1501205222, 1),                         "optimedate" : isodate("2017-07-28t01:27:02z"),                         "optimedurabledate" : isodate("2017-07-28t01:27:02z"),                         "lastheartbeat" : isodate("2017-07-28t01:27:03.679z"),                         "lastheartbeatrecv" : isodate("2017-07-28t01:27:03.716z"),                         "pingms" : numberlong(0),                         "syncingto" : "10.0.0.213:27017",                         "configversion" : 278273                 }         ],         "ok" : 1 }

and rs.config()

{         "_id" : "rs_pimapi",         "version" : 278273,         "members" : [                 {                         "_id" : 25,                         "host" : "10.231.158.108:27017",                         "arbiteronly" : false,                         "buildindexes" : true,                         "hidden" : false,                         "priority" : 1,                         "tags" : {                          },                         "slavedelay" : numberlong(0),                         "votes" : 1                 },                 {                         "_id" : 29,                         "host" : "10.0.1.95:27017",                         "arbiteronly" : false,                         "buildindexes" : true,                         "hidden" : false,                         "priority" : 0.5,                         "tags" : {                          },                         "slavedelay" : numberlong(0),                         "votes" : 1                 },                 {                         "_id" : 30,                         "host" : "10.0.0.213:27017",                         "arbiteronly" : false,                         "buildindexes" : true,                         "hidden" : false,                         "priority" : 1,                         "tags" : {                          },                         "slavedelay" : numberlong(0),                         "votes" : 1                 },                 {                         "_id" : 31,                         "host" : "10.124.225.51:27017",                         "arbiteronly" : false,                         "buildindexes" : true,                         "hidden" : false,                         "priority" : 1,                         "tags" : {                          },                         "slavedelay" : numberlong(0),                         "votes" : 1                 }         ],         "settings" : {                 "chainingallowed" : true,                 "heartbeatintervalmillis" : 2000,                 "heartbeattimeoutsecs" : 10,                 "electiontimeoutmillis" : 10000,                 "catchuptimeoutmillis" : 2000,                 "getlasterrormodes" : {                  },                 "getlasterrordefaults" : {                         "w" : 1,                         "wtimeout" : 0                 }         } }

and in django settings have set replica set replica_hosts = 'mongodb://10.231.158.108,10.0.1.95,10.0.0.51'

the problem appears when try remove 10.124.225.51 which, isn't referenced in config, , understanding of replication sets, should able taken out safely.


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