- Plesk for Linux
Plesk upgrade hangs on the following step:
PLESK_INFO: Setting up plesk-dovecot-imap-driver
It is not possible to switch from Courier to Dovecot via Plesk Installer.
The server has a kernel version older than 4.4.0-66-generic:
# uname -r
AppArmor is enabled on the server:
apparmor module is loaded.
This is an Ubuntu bug, which may occur when a server has an old kernel and AppArmor is enabled.
Permanent solution is upgrading kernel to the version at least 4.4.0-66-generic.
As a workaround, temporary disable AppArmor and perform a Plesk upgrade/installation of Dovecot.
1. Log in to Plesk server via SSH
2. Remove the package:
# dpkg -r --force-depends plesk-dovecot-imap-driver
# apt-get install -f
3. Install Plesk updates:
# plesk installer
4. Re-install the package:
# apt-get install --reinstall plesk-dovecot-imap-driver