Can't connect to backend: No such file or directory message in Plesk Update (8447/summary.html) page

[kounitsyn]

TITLE:

Can't connect to backend: No such file or directory message in Plesk Update (8447/summary.html) page​

PRODUCT, VERSION, OPERATING SYSTEM, ARCHITECTURE:

OS ‪CentOS 6.5 (Final)‬ Plesk Onyx 17.0.17 Update #18​

PROBLEM DESCRIPTION:

After the upgrade from Plesk 12.5 to 17 the update screen 8447/summary.html) seems broken. The error message is: Can't connect to backend: No such file or directory message​

STEPS TO REPRODUCE:

Home screen > Add components or visit https://domain.com:8447/summary.html​

ACTUAL RESULT:

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

EXPECTED RESULT:

Add, Edit, Update components screen​

ANY ADDITIONAL INFORMATION:

​

YOUR EXPECTATIONS FROM PLESK SERVICE TEAM:

Help with sorting out​

 

[UFHH01]

Hi kounitsyn,

Home > Tools & Settings > Updates and Upgrades ( links to https://domain.com:8443/admin/update/product/ , which will then redirect you to https://domain.com:8447/summary.html )

Pls. note, that this link ( https://domain.com:8447/summary.html ) should not be called manually, because it depends on sessions, which are only opened for a specific time - the session will be destroyed after 30 minutes of inactivity.​

 

[kounitsyn]

Thank you for your replay.

Unfortunately we still experience the problem. After Home > Tools & Settings > Updates and Upgrades we ge a screen with language-choice and admin username and password fields.
When we fill in the correct credentials the error message (Can't connect to backend: No such file or directory) comes up.

 

[UFHH01]

Hi kounitsyn,

consider to use the command:

plesk installer --select-product-id plesk --select-release-current --reinstall-patch --install-component base​

... and pls. report back afterwards, if the issue is gone. In case of further issues/errors/problems, pls. consider to use the "Plesk Repair Utility":

=> Plesk Repair Utility ( Plesk Onyx - online documentation - Administrator's Guide )

Example:

plesk repair installation -y -v

plesk repair all -y -v​

 

[kounitsyn]

Unfortunately no luck with both the solutions. The ./plesk-installer command is working without problems.
Coud the problem be related to https://kb.plesk.com/en/122949 ?

 

[UFHH01]

Hi kounitsyn,

Coud the problem be related to https://kb.plesk.com/en/122949 ?

Sure, that MAY be a cause. Did you try to solve your issue with the provided suggestions from the KB - article?

 

[kounitsyn]

Unfortunately the suggestions in the KB don't fix the problem.

The dump of autoinstaller3.log after trying to get to Home > Tools & Settings > Updates and Upgrades

[2017-03-11 10:04:55.184470]

Plesk Installer 3.20.17 (built on 2016-10-07 16:13 svn rev. 349581) started at (timezone CET) Sat Mar 11 10:04:55 2017
Command line arguments: /usr/local/psa/admin/bin/autoinstaller --service-mode --enable-xml-output --ssl-cert /usr/local/psa/admin/conf/httpsd.pem --branch release,stable

[2017-03-11 10:04:55.184496] SourceUrl: original source url is http://autoinstall.plesk.com/
[2017-03-11 10:04:55.184514] SourceUrl: fixed url is http://autoinstall.plesk.com/
[2017-03-11 10:04:55.184716] Try to find rcfile...
[2017-03-11 10:04:55.184750] Autoinstaller found rcfile at /root/.autoinstallerrc
[2017-03-11 10:04:55.184834] Option from rc file:: 'SSL_CIPHERS' = 'HIGH:!aNULL:!MD5'
[2017-03-11 10:04:55.184859] Option from rc file:: 'SSL_PROTOCOLS' = 'TLSv1 TLSv1.1 TLSv1.2'
[2017-03-11 10:04:55.184887] Read component settings from /root/.autoinstaller/options.ini
[2017-03-11 10:04:55.185110] Got OS name Linux, vendor CentOS, version 6.5, arch x86_64, environment ~empty
[2017-03-11 10:04:55.352543] Execute command "/usr/local/psa/admin/bin/autoinstaller" "--service-mode" "--enable-xml-output" "--ssl-cert" "/usr/local/psa/admin/conf/httpsd.pem" "--branch" "release,stable" --web-interface --with-ssl --disable-browser
[2017-03-11 10:04:55.366854] Environment locale name is 'C'
[2017-03-11 10:04:55.367565]

Plesk Installer 3.20.17 (built on 2016-10-07 16:13 svn rev. 349581) started at (timezone CET) Sat Mar 11 10:04:55 2017
Command line arguments: /usr/local/psa/admin/bin/autoinstaller --service-mode --enable-xml-output --ssl-cert /usr/local/psa/admin/conf/httpsd.pem --branch release,stable --web-interface --with-ssl --disable-browser

[2017-03-11 10:04:55.367587] SourceUrl: original source url is http://autoinstall.plesk.com/
[2017-03-11 10:04:55.367604] SourceUrl: fixed url is http://autoinstall.plesk.com/
[2017-03-11 10:04:55.367793] Try to find rcfile...
[2017-03-11 10:04:55.367817] Autoinstaller found rcfile at /root/.autoinstallerrc
[2017-03-11 10:04:55.367851] Option from rc file:: 'SSL_CIPHERS' = 'HIGH:!aNULL:!MD5'
[2017-03-11 10:04:55.367872] Option from rc file:: 'SSL_PROTOCOLS' = 'TLSv1 TLSv1.1 TLSv1.2'
[2017-03-11 10:04:55.367897] Read component settings from /root/.autoinstaller/options.ini
[2017-03-11 10:04:55.367926] DEBUG: ignore option --service-mode because environment variable WEB_SECRET is already set.
[2017-03-11 10:04:55.368075] Got OS name Linux, vendor CentOS, version 6.5, arch x86_64, environment ~empty
[2017-03-11 10:04:55.368471] DEBUG: web server PID: 27084
[2017-03-11 10:04:57.371612] Error: Can't start build-in web-server
Not all packages were installed.
Please try to install packages again later.
Please resolve this issue and try to install the packages again.
If you cannot resolve the issue on your own, contact product technical support for assistance.
[2017-03-11 10:04:59.239388] Messages::setLocale: try to create object for locale: nl_NL.UTF-8

 

[UFHH01]

Hi kounitsyn,

as an alternative, pls. consider now ( after your changes are done ), to call the Plesk installer again from the command line with the example command:

plesk installer --select-product-id plesk --select-release-current --reinstall-patch --install-component base​

... and let us know the output from the command line, including the new installer - log.

 

[kounitsyn]

Hi,

This solution Where is the Parallels Installer configuration file? did solve the problem for us.

 

[UFHH01]

Hi kounitsyn,

I know that it might be strange for you, but due to the fact, that you experienced the issues AFTER an upgrade to Plesk Onyx, there must be an unfinished task for the upgrade and the whole upgrade - process wasn't successfully finished. That's why I recommend to use the COMMAND LINE, untill you can be sure, that all updates/upgrades are installed. Providing the outputs from your command at the command line and the corresponding log(s) might help to investigate your issue ( pls. keep in mind, that EACH autoinstaller - command will produce a NEW log. ).

 

[kounitsyn]

See file for output and log

 

[UFHH01]

Hi kounitsyn,

I noticed some warnings in your log, which should be inspected by some Plesk - Team - Members ( as for example @IgorG ). Pls. wait for an answer from them and possible further suggestions.

 

[IgorG]

I have checked this output file and found nothing suspicious there. If you mean "ez_template_suffix is NOT defined" warnings, they are related to case of Virtuozzo EZ templates and they are just warnings, but not errors.
Also, I would suggest you check existence and content of /root/.autoinstallerrc file.

 

[kounitsyn]

Thank you for your reply. The content of that file is:

SSL_CIPHERS="HIGH:!aNULL:!MD5"
SSL_PROTOCOLS="TLSv1 TLSv1.1 TLSv1.2"

 

[IgorG]

Thank you for your reply. The content of that file is:

SSL_CIPHERS="HIGH:!aNULL:!MD5"
SSL_PROTOCOLS="TLSv1 TLSv1.1 TLSv1.2"

It's ok.

 

[Julian VOGIN]

I often encounter this problem, almost for each Plesk update.
My only solution is to list pids (ps -x) then kill autoinstaller process(es).

I would appreciate a sustainable solution.