Introduction
This article has a relation with a previous article. That previous article is an article with the title of ‘How to Setup Local Image Repository with Podman in Linux CentOS 8’ in this link. Basically, it is to show how to start an existing local image repository container using podman. But after shutting down the virtual server or restarting it, the local image respository container is stop. So, after the executing the command to start it again, an error message appear. It is actually the same error message as in the article exist in this link. The article’s title is ‘How to Solve Error Message Error: error creating container storage: the container name is already in use when executing podman’.
So, the following is the actual execution of to run the local image repository container using podman :
[admin@10 ~]$ podman run --privileged -d --name registry -p 5000:5000 -v /var/lib/registry:/var/lib/registry --restart=always registry:2 Error: error creating container storage: the container name "registry" is already in use by "ec4154e818a02a590c46456702478f461195ea7dfc375e3ad7fa14269e51278e". You have to remove that container to be able to reuse that name.: that name is already in use [admin@10 ~]$
Another way for running the container which is already exist is just by starting it. The command execution for starting the container exist as follows :
[admin@10 ~]$ podman start registry registry [admin@10 ~]$ podman ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES ec4154e818a0 docker.io/library/registry:2 /etc/docker/regis... 4 days ago Up 5 seconds ago 0.0.0.0:5000->5000/tcp registry [admin@10 ~]$
Running Local Image Repository Server Container using root account
As an information, there is a different between running the local image repository container among different user or account in the operating system. For an example, if there is never been any submit, tag or pull to the repository using a user, there will be no image available in the execution of ‘podman images’ command.
But on the other hand, if in another user account, it has already been done, it is a different story. It will share the list of those images across the user account. For example, the following is the output of listing the container and image using the account with the name of ‘admin’ :
[admin@10 ~]$ podman ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES [admin@10 ~]$ podman stop registry ec4154e818a02a590c46456702478f461195ea7dfc375e3ad7fa14269e51278e [admin@10 ~]$ [admin@10 ~]$ podman ps -a CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES ec4154e818a0 docker.io/library/registry:2 /etc/docker/regis... 4 days ago Exited (2) 2 hours ago 0.0.0.0:5000->5000/tcp registry [admin@10 ~]$ podman images REPOSITORY TAG IMAGE ID CREATED SIZE docker.io/library/httpd latest f3cffeea581b 11 days ago 142 MB docker.io/library/registry 2 1fd8e1b0bb7e 5 weeks ago 26.8 MB docker.io/library/hello-world latest d1165f221234 2 months ago 20 kB [admin@10 ~]$
Compare it with the one using the ‘root account’ as follows :
[admin@10 ~]$ sudo su - [sudo] password for admin: Last login: Sun May 23 03:24:45 EDT 2021 on pts/0 [root@10 ~]# podman ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES c1107efbfed4 docker.io/library/registry:2 /etc/docker/regis... 4 weeks ago Up 2 hours ago 0.0.0.0:5000->5000/tcp registry 08aa9031f3ab localhost:5000/httpd-template httpd-foreground 2 hours ago Up 2 hours ago 0.0.0.0:8080->80/tcp local_httpd [root@10 ~]# podman ps -a CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES c1107efbfed4 docker.io/library/registry:2 /etc/docker/regis... 4 weeks ago Up 2 hours ago 0.0.0.0:5000->5000/tcp registry aa9a9a9813c2 docker.io/library/httpd:latest httpd-foreground 2 days ago Exited (0) 2 days ago 0.0.0.0:8080->80/tcp my_httpd 08aa9031f3ab localhost:5000/httpd-template httpd-foreground 2 hours ago Up 2 hours ago 0.0.0.0:8080->80/tcp local_httpd [root@10 ~]# podman images REPOSITORY TAG IMAGE ID CREATED SIZE localhost/httpd-template latest fad3e1369c4e 2 days ago 142 MB localhost:5000/httpd-template latest fad3e1369c4e 2 days ago 142 MB docker.io/library/httpd latest f3cffeea581b 11 days ago 142 MB docker.io/library/registry 2 1fd8e1b0bb7e 5 weeks ago 26.8 MB docker.io/library/hello-world latest d1165f221234 2 months ago 20 kB [root@10 ~]# [root@10 ~]# podman start registry [root@10 ~]# podman ps -a CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES c1107efbfed4 docker.io/library/registry:2 /etc/docker/regis... 4 weeks ago Up 2 hours ago 0.0.0.0:5000->5000/tcp registry aa9a9a9813c2 docker.io/library/httpd:latest httpd-foreground 2 days ago Exited (0) 2 days ago 0.0.0.0:8080->80/tcp my_httpd 08aa9031f3ab localhost:5000/httpd-template httpd-foreground 2 hours ago Up 2 hours ago 0.0.0.0:8080->80/tcp local_httpd [root@10 ~]#
So, the are difference on the list of the images and also containers between different user account. It depends on the user or the account whom execute to run the local server image repository server.