Could not connect to replica set in MongoDB with pymongo - mongodb

Question

I am trying to connect to replica set in MongoDB with the following command:
client = MongoClient(
"PublicIP:27017,PublicIP:27017,PublicIP:27017,PublicIP:27017,PublicIP:27017",
replicaSet="rs0", readPreference='nearest',
localThresholdMS=500)
db = client.sampledb
# checks the connection to RS in Mongo
try:
db.command("serverStatus")
except Exception as e:
print(e)
else:
print("\n Connection established to the Replica Set!)
I have setup 5 nodes in AWS (1 master, 4 slaves) and the /etc/mongod.conf file in all nodes looks like this:
systemLog:
destination: file
logAppend: true
path: /var/log/mongodb/mongod.log
# Where and how to store data.
storage:
dbPath: /var/lib/mongo
journal:
enabled: true
# engine:
# mmapv1:
# wiredTiger:
# how the process runs
processManagement:
fork: true # fork and run in background
pidFilePath: /var/run/mongodb/mongod.pid # location of pidfile
# network interfaces
net:
port: 27017
#bindIp: 127.0.0.1 # Listen to local interface only, comment to listen on all interfaces.
security:
authorization: "disabled"
#operationProfiling:
replication:
replSetName: rs0
When I try to connect from my local machine I get a timed out like this:
ip:27017: timed out,ip:27017: timed out,ip:27017: timed out,ip:27017:
timed out,ip:27017: timed out
Does anyone know why?

Answer 1

Starting 3.6 bindIp defaults to localhost only. So, assuming you are running 3.6 or later your configuration is not accessible from outside, since you commented out bindIp.
This post might be helpful to understand some of the nuances: https://www.mongodb.com/blog/post/enabling-ip-security-for-mongodb-36-on-ubuntu
Obviously, don't forget to make sure AWS Security Group on your instances allows Ingress connection on port 27017.