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Workspace looping at starting page with mysqladmin ping error in docker logs

Community Server/Control Panel version: the latest version I think , can not login to confirm
Type of installation of Workspace (docker, deb/rpm, exe)
OS: ubuntu 20.04 with docker 20.10.12
Browser version: firefox 99.0(x64) , chrome 100.0.4896.75 (X64 )

I download the from

and follow this article to install workspace

then I try to open the control panel with

the page always loopinh between

The portal start up process might take some time, please wait..
We are working on it.
Please do not reload the page or shut down your computer.

and I docker logs keep looping

+ mysqladmin ping -h onlyoffice-mysql-server -P 3306 -u onlyoffice_user --password=onlyoffice_pass --silent
mysqladmin: [Warning] Using a password on the command line interface can be insecure.

and here is my docker status

chchang@ubuntu:~$ docker ps -a
CONTAINER ID   IMAGE                                    COMMAND                  CREATED          STATUS          PORTS                                                                                                                                                                                                                                                                                                 NAMES
3dd190319ef4   onlyoffice/communityserver:   "/app/run-community-…"   26 minutes ago   Up 26 minutes>80/tcp, :::80->80/tcp,>443/tcp, :::443->443/tcp, 3306/tcp, 5280/tcp, 9865-9866/tcp, 9871/tcp, 9882/tcp,>5222/tcp, :::5222->5222/tcp, 9888/tcp                                                                                                                  onlyoffice-community-server
ef80f5a3736d   onlyoffice/controlpanel:        "/var/www/onlyoffice…"   30 minutes ago   Up 30 minutes   80/tcp, 443/tcp                                                                                                                                                                                                                                                                                       onlyoffice-control-panel
73226cfcebe5   onlyoffice/mailserver:1.6.75             "/bin/sh -c 'export …"   30 minutes ago   Up 30 minutes>25/tcp, :::25->25/tcp,>143/tcp, :::143->143/tcp,>465/tcp, :::465->465/tcp,>587/tcp, :::587->587/tcp,>993/tcp, :::993->993/tcp,>995/tcp, :::995->995/tcp, 3306/tcp,>4190/tcp, :::4190->4190/tcp, 8081/tcp   onlyoffice-mail-server
31c2c56cfc4e   onlyoffice/documentserver:       "/app/ds/run-documen…"   32 minutes ago   Up 32 minutes   80/tcp, 443/tcp                                                                                                                                                                                                                                                                                       onlyoffice-document-server
108d789e5412   mysql:8.0                                "docker-entrypoint.s…"   37 minutes ago   Created                                                                                                                                                                                                                                                                                                               onlyoffice-mysql-server

this is a fresh VM , and I follow all steps in the installation document. and I have no idea how to debug.
any suggestions to fix ??

Hello @chchang,

From your references I can see that the container with MySQL did not start.
I’d recommend to start with checking available disk space by executing df -h command and providing us with the results.
Also you can try to restart the container manually by running docker restart onlyoffice-mysql-server