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I have a standalone MongoDB instance in my AWS EC2 instance. I'm planning to shift it to Mongo Atlas. The prerequisite is to convert the MongoDB instance into a replica set.

Below is the code for my mongo.conf file: 

# mongodb.conf

# Where to store the data.
dbpath=/opt/bitnami/mongodb/data/db

#where to log
logpath=/opt/bitnami/mongodb/log/mongodb.log

logappend=true

bind_ip = 127.0.0.1
port = 27017

# Enable journaling, http://www.mongodb.org/display/DOCS/Journaling
journal=true


# Enable smaller default file size for MongoDB
# Also reduces size of journal files from 1G to 128M
#smallfiles=true

# Enables periodic logging of CPU utilization and I/O wait
#cpu = true

# Turn on/off security.  Off is currently the default
#noauth = true
auth = true

# Verbose logging output.
#verbose = true

# Inspect all client data for validity on receipt (useful for
# developing drivers)
#objcheck = true

# Enable db quota management
#quota = true

# Set oplogging level where n is
#   0=off (default)
#   1=W
#   2=R
#   3=both
#   7=W+some reads
#oplog = 0

# Diagnostic/debugging option
#nocursors = true

# Ignore query hints
#nohints = true



setParameter = enableLocalhostAuthBypass=0


unixSocketPrefix=/opt/bitnami/mongodb/tmp
fork = true

setParameter = enableLocalhostAuthBypass=0




# Replication Options

replication:
    replSetName: res0

# in replicated mongo databases, specify here whether this is a slave or master
#slave = true
#source = master.example.com
# Slave only: specify a single database to replicate
#only = master.example.com
# or
#master = true
#source = slave.example.com

I'm using the below command to create the replica set:

 sudo mongod --port 27017 --dbpath /opt/bitnami/mongodb --replSet res0 --bind_ip localhost

I'm getting the below error:

NoMatchingDocument: Did not find replica set configuration document in local.system.replset

What else should I change in my mongo.conf file?

Anirudh
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2 Answers2

2

I had same issue but I resolved following below steps :

I am on Windows server . Mongo DB shell version 3.0.4 . Error in below screen shot same as you mentioned

enter image description here

So I connect to Mongo shell switch to local .

Use following command. Please note SIR is my replica set name

    cfg = {  _id:"SIR" , members:
                 [{ _id:0,host:"localhost:27017"}] 
    
           };

   rs.initiate(cfg)

Result

enter image description here

Yashveer Singh
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0

I'm using bitnami/mongodb helm chart to deploy mongodb to our custom k8s cluster and got this error when forgot to override clusterDomain variable in my values.yaml file because by default it was cluster.local and lead to run rs.initiate eval with wrong cluster domain in host address:

mongodb 14:59:37.35 WARN ==> Problem initiating replica set
request: rs.initiate({"_id":"rs0", "members":[{"_id":0,"host":"temp-mongo-0.temp-mongo-headless.default.svc.**cluster.local**:27017","priority":5}]})
response: MongoDB shell version v4.4.4
connecting to: mongodb://127.0.0.1:27017/admin?compressors=disabled&gssapiServiceName=mongodb
Implicit session: session { "id" : UUID("dc48d2bc-269b-4710-95b8-525b7768fa72") }
MongoDB server version: 4.4.4
{
"ok" : 0,
"errmsg" : "No host described in new configuration with {version: 1, term: 0} for replica set rs0 maps to this node",
"code" : 93,
"codeName" : "InvalidReplicaSetConfig"
}
bye
Aleksandr Belevtsov
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