- Plesk for Linux
Unable to access Plesk > Tools & Settings > Updates and Upgrades due to the following error:
CONFIG_TEXT: Unable to connect
CONFIG_TEXT: 502 Bad Gateway
The following rows appear in the
CONFIG_TEXT: autoinstaller: read output of apt-cache policy
Err:12 http://autoinstall.plesk.com/debian/PHP_5.4 jessie InRelease
The following signatures were invalid: 8BADC1A02FC9C07FB8C20EC0BD11A6AA914BDF7E
Fetched 23.5 kB in 1s (15.8 kB/s)
Reading package lists...
W: GPG error: http://autoinstall.plesk.com/debian/SITEBUILDER_12.5.30 all InRelease: The following signatures were invalid: 8BADC1A02FC9C07FB8C20EC0BD11A6AA914BDF7E
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://autoinstall.plesk.com/debian/PHP_5.4 jessie InRelease: The following signatures were invalid: 8BADC1A02FC9C07FB8C20EC0BD11A6AA914BDF7E
W: Failed to fetch http://autoinstall.plesk.com/debian/PHP_5.4/dists/jessie/InRelease The following signatures were invalid: 8BADC1A02FC9C07FB8C20EC0BD11A6AA914BDF7E
W: Some index files failed to download. They have been ignored, or old ones used instead.
aptpackage from Debian 9 Stretch is used on Debian 8 Jessie:
# apt-cache policy apt
*** 1.4.8 500
500 http://ftp.us.debian.org/debian stretch/main i386 Packages
# cat /etc/debian_version
The sw-engine service stops working periodically with the following error in the
/var/log/plesk/sw-cp-server/sw-engine.logwith the enabled debug logging:
CONFIG_TEXT: DEBUG: pid 2198, fpm_got_signal(), line 76: received SIGCHLD
DEBUG: pid 2198, fpm_children_bury(), line 254: [pool plesk] child 2200 has been killed by the process management after 50.083144 seconds from start
apt package from currently unsupported by Plesk Debian 9 Stretch is installed on Debian 8.
Replace the packages which are installed from Debian 9 with original ones from Debian 8 (for example, according to the article https://wiki.debian.org/RollbackUpdate ).
Alternatively, restore the system snapshot from pre-upgrade state.