CODEWITHSUNDEEP
ssldocker
blacklabelops
blacklabelops

Reputation: 4958

Docker Socket Without TLS

I have a TLS secured docker demon running. I use TLS for remote accessing the docker demon and access docker locally without any TLS. Normally...

Recently, I have updated Docker. Apparently I cannot connect to the local socket anymore. I suppose Docker is using now TLS for remote and local connections.

Is there a way to disable TLS for the local Docker socket?

Output of ps auxw | grep dockerd:

/usr/bin/dockerd -H 0.0.0.0:2376 --tlsverify --tlscacert /home/dockermanager/.docker/ca.pem --tlscert /home/dockermanager/.docker/server-cert.pem --tlskey /home/dockermanager/.docker/server-key.pem

Upvotes: 1

Views: 3207

Answers (1)

blacklabelops
blacklabelops

Reputation: 4958

Had been able to fix this myself.

I needed to migrate to these two systemd files provided by Docker: https://github.com/moby/moby/tree/master/contrib/init/systemd

One service file is for the docker demon and there is one for the docker socket separately. The docker socket is a required dependency by docker.service and will be loaded, restartet and stopped accordingly.

Then i needed to add the docker demon parameter -H unix:// in order to activate the docker demon listening to the docker socket.

Afterwards everything worked as always and I assume local docker.socket communication does not need tls verification at all.

Start command now:

/usr/bin/dockerd -H unix:// -H tcp://0.0.0.0:2376 --tlsverify --tlscacert /home/dockeruser/.docker/ca.pem --tlscert /home/dockeruser/.docker/server-cert.pem --tlskey /home/dockeruser/.docker/server-key.pem

Upvotes: 2

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