"rs.remove" - how to use "force" command? (use the "force" argument to override)

[Tomasz Chmielewski]

I have a 3-config server setup.

I've restored a backup of one server in a testing environment and trying to restore it as a single server - it starts up fine as a secondary.

csReplSet:SECONDARY> rs.status()
{
        "set" : "csReplSet",
        "date" : ISODate("2019-06-13T05:27:59.027Z"),
        "myState" : 2,
        "term" : NumberLong(32),
        "configsvr" : true,
        "heartbeatIntervalMillis" : NumberLong(2000),
        "members" : [
                {
                        "_id" : 0,
                        "name" : "mongo-cfg01:27019",
                        "health" : 1,
                        "state" : 2,
                        "stateStr" : "SECONDARY",
                        "uptime" : 3546,
                        "optime" : {
                                "ts" : Timestamp(1560399986, 5),
                                "t" : NumberLong(32)
                        },
                        "optimeDate" : ISODate("2019-06-13T04:26:26Z"),
                        "configVersion" : 4,
                        "self" : true
                },
                {
                        "_id" : 1,
                        "name" : "mongo-cfg02:27019",
                        "health" : 0,
                        "state" : 8,
                        "stateStr" : "(not reachable/healthy)",
                        "uptime" : 0,
                        "optime" : {
                                "ts" : Timestamp(0, 0),
                                "t" : NumberLong(-1)
                        },
                        "optimeDate" : ISODate("1970-01-01T00:00:00Z"),
                        "lastHeartbeat" : ISODate("2019-06-13T05:27:58.752Z"),
                        "lastHeartbeatRecv" : ISODate("1970-01-01T00:00:00Z"),
                        "pingMs" : NumberLong(0),
                        "lastHeartbeatMessage" : "Couldn't get a connection within the time limit",
                        "configVersion" : -1
                },
                {
                        "_id" : 2,
                        "name" : "mongo-cfg03:27019",
                        "health" : 0,
                        "state" : 8,
                        "stateStr" : "(not reachable/healthy)",
                        "uptime" : 0,
                        "optime" : {
                                "ts" : Timestamp(0, 0),
                                "t" : NumberLong(-1)
                        },
                        "optimeDate" : ISODate("1970-01-01T00:00:00Z"),
                        "lastHeartbeat" : ISODate("2019-06-13T05:27:58.753Z"),
                        "lastHeartbeatRecv" : ISODate("1970-01-01T00:00:00Z"),
                        "pingMs" : NumberLong(0),
                        "lastHeartbeatMessage" : "Couldn't get a connection within the time limit",
                        "configVersion" : -1
                }
        ],
        "ok" : 1
}

Because it's a test environment now, I don't need three servers - one is just fine.

So let's try to remove two of them - doesn't work:

csReplSet:SECONDARY> rs.remove("mongo-cfg02:27019")
{
        "ok" : 0,
        "errmsg" : "replSetReconfig should only be run on PRIMARY, but my state is SECONDARY; use the \"force\" argument to override",
        "code" : 10107
}

Let's try to use force as advised then - still doesn't work:

csReplSet:SECONDARY> rs.remove("mongo-cfg02.int.timedoctor.com:27019", { force: 1 })
{
        "ok" : 0,
        "errmsg" : "replSetReconfig should only be run on PRIMARY, but my state is SECONDARY; use the \"force\" argument to override",
        "code" : 10107
}

Is my syntax wrong?

Tomasz

[Tiago Brito]

Hi Tomasz

You cannot use {force: true} with rs.remove(). You will need to use rs.reconfig().

Have a look at the instructions here.

You will need something like:

cfg = rs.conf();

cfg.members.splice(1,2); // remove 2 servers starting at index 1 - documentation here

rs.reconfig(cfg, {force: true});

I hope this helps.

Regards

Tiago