Enable remote access to docker daemon¶

Connect to remote docker engine¶

:::info Check on docker daemon version 27.5.1 and docker cli version 28.4.0 :::

Connecting without TLS¶

On docker engine:¶

1. Stop Docker Service¶

sudo systemctl stop docker

2. Start the Docker service¶

 sudo dockerd --host=tcp://Hostname:2375

On Client Machine¶

1. Export the variable¶

export DOCKER_HOST='tcp://hostname:2375'

2. Run the commands¶

docker ps

Connecting with TLS¶

On Docker engine¶

1. Stop the docker services¶

sudo systemctl stop docker

2. Run the command to enable docker¶

dockerd --debug \
        --host=tcp://hostname:2376 \
        --tls=true \
        --tlscert=/var/docker/server.pem \
        --tlskey=/var/docker/serverkey.pem

On client machine¶

1. Export the variable¶

export DOCKER_HOST='tcp://hostname:2376'

2. Run commands¶

docker images

Persistent configuration¶

Create or Edit file /etc/docker/daemon.json¶

Open the file¶

sudo vim /etc/docker/daemon.json

Add the content¶

{
  "debug": true,
  "hosts": ["tcp://hostname:2376"],
  "tls": true,
  "tlscert": "/var/docker/server.pem",
  "tlskey": "/var/docker/serverkey.pem"
}

Start docker daemon¶

sudo systemctl restart docker