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Read only mounts and Plesk

RenéJ

New Pleskian
Dear Forum,
Dear Support,

I seperated /usr and I am going to mount it read only, to get at least a few system binaries protected additionally. But I noticed that Plesk got at least 2 panel directories there: /usr/lib/plesk-9.0, /usr/local/sb and of course the 2 directories for horde and roundcube.

My question to prevent a broken Plesk in the future is:

To which directories, maybe additional ones to the above mentioned, does Plesk have to have write access to, if I am using the minimalistic update setting: "Notify me about available updates but do not automatically install them" ?

Generally I would be please, if Parallels could get it managed to move all directories affected by daily panel operations like /etc/plesk.conf.d/vhosts/ to /var/etc/ or /opt/psa/etc/ to fit better into a read only protected system root environment.
 
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