I'm trying to change Replica Set Protocol to pv1. I have 5 replica set servers Mongo 3.6. I'm using the documentation from here https://docs.mongodb.com/manual/reference/replica-set-protocol-versions/ to make those changes.
The documentation is pretty clear and operation seems simple https://docs.mongodb.com/manual/reference/replica-set-protocol-versions/#modify-replica-set-protocol-version. On PRIMARY server I executed this three commands:
cfg = rs.conf(); cfg.protocolVersion=1; rs.reconfig(cfg);
After doing it I'm getting :
rs.reconfig(cfg); { "ok" : 1, "operationTime" : Timestamp(1531825299, 3), "$clusterTime" : { "clusterTime" : Timestamp(1531825299, 3), "signature" : { "hash" : BinData(0,"AIwmnD882cUdRgKYgGsRZg9Z4q0="), "keyId" : NumberLong("6577197549977862145") } } }
Everything looks good, but after relogin to mongo I can see this:
MongoDB shell version v3.6.6 connecting to: mongodb://127.0.0.1:27017 MongoDB server version: 3.6.6 Server has startup warnings: 2018-07-10T22:50:39.164+0200 I REPL [replexec-0] 2018-07-10T22:50:39.164+0200 I REPL [replexec-0] ** WARNING: This replica set was configured with protocol version 0. 2018-07-10T22:50:39.164+0200 I REPL [replexec-0] ** This protocol version is deprecated and subject to be removed 2018-07-10T22:50:39.164+0200 I REPL [replexec-0] ** in a future version.
I don't know what I'm doing wrong? Any help why this operation doesn't work ?