During T98 an issue was found with the FirewallD component and during unbreak operation, the server fully isolated itself and rescue is required.
Due of no backups, server is not considered a cattle and rescue operation is in progress.
Description
Description
Event Timeline
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Seems like all issues are caused by OVH's custom kernel
Attempting to replace the kernel for a stock LTS one
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SSH ports returned to stock port to not cut connection again
Firewall configs nuked from orbit
Proceeding with new rule configuration
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MySQL folder in /var/run/ is missing and is not being recreated on boot
Creating it and assigning correct permissions makes the server function but gets removed on boot. Possible side-effect of kernel change.
Applying fix from here
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Continuing verification of functions
Firewall is functional and core services are up.