重新启动=从不导致 MongoDB 吊舱终止

Question

I am trying to follow the instructions here: https://github.com/bitnami/charts/tree/master/bitnami/mongodb

1) helm install mongorelease --set mongodbRootPassword=secretpassword,mongodbUsername=my-user,mongodbPassword=my-password,mongodbDatabase=my-database bitnami/mongodb

which says:

To connect to your database run the following command:

kubectl run --namespace default mongorelease-mongodb-client --rm --tty -i --restart='Never' --image docker.io/bitnami/mongodb:4.2.5-debian-10-r44 --command -- mongo admin --host mongorelease-mongodb --authenticationDatabase admin -u root -p $MONGODB_ROOT_PASSWORD

I run the command above (replacing $MONGODB_ROOT_PASSWORD with my password) and I see this error:

error: invalid restart policy: 'Never'
See 'kubectl run -h' for help and examples

I remove the single quotes around Never and see this:

MongoDB shell version v4.2.5
connecting to: mongodb://mongorelease-mongodb:27017/admin?authSource=admin&compressors=disabled&gssapiServiceName=mongodb
2020-04-11T10:04:52.187+0000 E  QUERY    [js] Error: Authentication failed. :
connect@src/mongo/shell/mongo.js:341:17
@(connect):2:6
2020-04-11T10:04:52.189+0000 F  -        [main] exception: connect failed
2020-04-11T10:04:52.189+0000 E  -        [main] exiting with code 1
pod "mongorelease-mongodb-client" deleted
pod default/mongorelease-mongodb-client terminated (Error)

I then remove --restart=Never from the command and run it again. It then works expected and I can interact with MongoDB, however I am presented with this warning:

kubectl run --generator=deployment/apps.v1 is DEPRECATED and will be removed in a future version. Use kubectl run --generator=run-pod/v1 or kubectl create instead.

What is the command I should be using?

Answer 1

--restart=Never creates a pod. So you instead can run this command with --generator=run-pod/v1 to create a pod. This avoids usage of --restart=Never and also the deprecation warning will not be there.

kubectl run --rm --grace-period=1 --force=true --generator=run-pod/v1 --namespace default mongorelease-mongodb-client --tty -i --image docker.io/bitnami/mongodb:4.2.5-debian-10-r44 --command -- mongo admin --host mongorelease-mongodb --authenticationDatabase admin -u root -p $MONGODB_ROOT_PASSWORD