Plesk Update: Can't connect to backend: No such file or directory

[Erwan]

Hello,

Under Plesk 12.5, when we want a plesk update, we have this message in the window:

Can't connect to backend: No such file or directory

How can we reinit ou change this?
We don't have found any solution on the web...

 

[IgorG]

Try to use following command in CLI for Plesk update and fix this issue:

# plesk installer --select-release-current --reinstall-patch --upgrade-installed-components

 

[Erwan]

Igor,

It doesn't work.
Always the problem.

 

[IgorG]

It doesn't work.

What is error message in the output of my command above?

 

[Erwan]

No errors with the commande but the problem still here.

.......
File downloading PSA_12.5.30/microupdates/MU28/common/PMM/schemas/pmm_api_xml_protocols.xsd: completed.
File downloading PSA_12.5.30/microupdates/MU28/common/admin/share/pmmcli/pmmcli.py: completed.
File downloading PSA_12.5.30/microupdates/MU29/common/admin/plib/constants.php3: completed.
File downloading PSA_12.5.30/microupdates/MU29/common/admin/plib/Service/Driver/Application/Wordpress/Abstract.php: completed.
File downloading PSA_12.5.30/microupdates/MU29/common/admin/plib/CommonPanel/Exception.php: completed.
File downloading PSA_12.5.30/microupdates/MU29/common/admin/plib/CommonPanel/Config/Defaults.php: completed.
File downloading PSA_12.5.30/microupdates/MU30/dist-rpm-CentOS-6-x86_64/sslmng.py: completed.
File downloading PSA_12.5.30/microupdates/MU30/dist-rpm-CentOS-6-x86_64/http2_pref: completed.
File downloading PSA_12.5.30/microupdates/MU30/common/admin/plib/CommonPanel/Controller/Helper/Module.php: completed.
File downloading PSA_12.5.30/microupdates/MU30/common/admin/plib/ExtendedServerInfo.php: completed.
Trying to start service mysqld... mysqld (pid 8391) en cours d'ex▒cution...
done
Trying to establish test connection... connected
done
STOP update_history
Patches were installed successfully.


[root@w350 ~]#

 

[IgorG]

Check this KB article https://kb.plesk.com/en/122949

 

[Erwan]

Always the message: Can't connect to backend: No such file or directory.

 

[IgorG]

Always the message: Can't connect to backend: No such file or directory.

Have you applied solution from KB article?

 

[TWGx38]

I've come across a similar issue. When attempting an update through Plesk (Tools & Setttings > Updates and Upgrades) I get the following issue (attached screenshot).

I did a lookup of autoinstaller.plesk.com and it reported the cname entry as an odin.net address. Both odin.com and odin.net do not resolve for me at this time.

 

[IgorG]

I did a lookup of autoinstaller.plesk.com

Correct name of this host is autoinstall.plesk.com
For correct resolving this hostname you can just add line like

93.184.221.133 autoinstall.plesk.com

to your /etc/hosts file.

 

[kounitsyn]

Have you applied solution from KB article?

After the update from 12.5 to 17 we have the same issue.
Both solutions (plesk installer --select-release-current --reinstall-patch --upgrade-installed-components) and (https://kb.plesk.com/en/122949) did not solve the problem. Can we try something else?

 

[Wilhelm]

Since this week I have the same problem.

plesk installer --select-release-current --reinstall-patch --upgrade-installed-components

Doesn't bring a solution.

 

[Monty]

Have you tried this:
Updates and Upgrades does not work: Can't connect to backend: No such file or directory

 

[Wilhelm]

I did the steps in the file, but the problem still alive.

 

[david82]

Have you tried this:
Updates and Upgrades does not work: Can't connect to backend: No such file or directory

hi i have the same problem i tried this but the error keeps coming up.

any solution ?

 

[Erwan]

Hello,
We have never had the solution to this problem...
We no longer use Plesk on the relevant server.

 

[david82]

but some solution has to be.