K
Q

Google cloud access mongo deployed on compute engine from app deployed on kubernetes engine

8/13/2018

I have three instances for kubernetes cluster and three instances for mongo cluster as shown here:

enter image description here

I can access my mongo cluster from app console and other compute instances using uri like this:

mongo mongodb:root:passwd@mongodb-1-servers-vm-0:27017,mongodb-1-servers-vm-1:27017/devdb?replicaSet=rs0

I also tried replacing instance names with internal and external ip addresses, but that didn't help it either.

But the same command does not work from instances inside the kubernetes cluster. I assume that I have to configure some kind of permissions for my cubernetes cluster to access compute instances? Can someone help?

-- Ben
google-app-engine
google-compute-engine
kubernetes
mongodb

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1 Answer

8/14/2018

Ok, I managed to find a solution, not sure if the best one.

First we add firewall rules to allow mongodb traffic

gcloud compute firewall-rules create allow-mongodb --allow tcp:27017

Then we use external ip's to connect to mongodb from kubernetes instances

mongodb:root:passwd@<ip1>:27017,<ip2>:27017/devdb?replicaSet=rs0
-- Ben
Source: StackOverflow