Many Linux distributions use systemd to start the Docker daemon. This documentshows a few examples of how to customize Docker’s settings.

Once Docker is installed, you will need to start the Docker daemon.

If you want Docker to start at boot, you should also:

Custom Docker daemon options

Mar 13, 2021 1 Answer1. Okay so the problem was two-fold. One was that you (probably) have to change the dockerd group with -group, and also you have to change the docker.socket.service group as well. The other part is that you need to modify the settings with a systemd override ( sudo systemctl edit docker) rather than making changes in /lib/systemd. Good evening, I'm looking for the best way to move docker directory (default /var/lib/docker) to another directory. (Technically other disk partition) I'm using devicemapper, and I think a lot of things are mounted, so it's not as easy a.

There are a number of ways to configure the daemon flags and environment variablesfor your Docker daemon.

The recommended way is to use a systemd drop-in file (as described inthe systemd.unitdocumentation). These are local files named <something>.conf in the/etc/systemd/system/docker.service.d directory. This could also be/etc/systemd/system/docker.service, which also works for overridingthe defaults from /lib/systemd/system/docker.service.

However, if you had previously used a package which had anEnvironmentFile (often pointing to /etc/sysconfig/docker) then forbackwards compatibility, you drop a file with a .conf extension intothe /etc/systemd/system/docker.service.d directory including thefollowing:

To check if the docker.service uses an EnvironmentFile:

Alternatively, find out where the service file is located:

You can customize the Docker daemon options using override files as explained in theHTTP Proxy example below. The files located in /usr/lib/systemd/systemor /lib/systemd/system contain the default options and should not be edited.

Docker /usr/lib/systemd Download

You may want to control the disk space used for Docker images, containersand volumes by moving it to a separate partition.

In this example, we’ll assume that your docker.service file looks something like:

This will allow us to add extra flags via a drop-in file (mentioned above) byplacing a file containing the following in the /etc/systemd/system/docker.service.ddirectory:

You can also set other environment variables in this file, for example, theHTTP_PROXY environment variables described below.

To modify the ExecStart configuration, specify an empty configuration followedby a new configuration as follows:

If you fail to specify an empty configuration, Docker reports an error such as:

This example overrides the default docker.service file.

If you are behind an HTTP proxy server, for example in corporate settings,you will need to add this configuration in the Docker systemd service file.

First, create a systemd drop-in directory for the docker service:

Now create a file called /etc/systemd/system/docker.service.d/http-proxy.confthat adds the HTTP_PROXY environment variable:

If you have internal Docker registries that you need to contact withoutproxying you can specify them via the NO_PROXY environment variable:

Flush changes:

Verify that the configuration has been loaded:

/usr/lib/systemd/system/docker.service Permission Denied

Restart Docker:

Manually creating the systemd unit files

Docker /usr/lib/systemd Software

When installing the binary without a package, you may wantto integrate Docker with systemd. For this, simply install the two unit files(service and socket) from the githubrepositoryto /etc/systemd/system.

Комментарии:

Docker /usr/lib/systemd Example

Пожалуйста, авторизуйтесь что бы оставлять комментарии.