[CentOS] how to prevent files and directories from being deleted?

[hw]

Gary Stainburn <gary at ringways.co.uk> writes:

> On Tuesday 03 October 2017 18:24:01 Mark Haney wrote:
>> What issue? That the PID is dropped on reboot?  What else are you
>> putting in there?  I'm beginning to question whether you know what
>> you're doing or not.  Lighttpd doesn't store any persistent info in
>> /var/run/ because, like everything else, /var/run isn't for persistent
>> data.
>
> Mark, Many Non-Centos originated packages create directories in /var/run as 
> part of the install, and expect them to still exist after a reboot.

I would also expect that.

> They then fail when starting the service because they're trying to create a 
> PID / Lock file in a directory that no longer exists.  This problem has been 
> around ever since /var/run was moved to tmpfs.

A ramdisk?  That´s an incredibly stupid idea.  Ramdisks should not be
used by default.

Is there a way to change that?

> Unfortunately, sometimes we have to use packages other than the official 
> Centos ones, usually as in this case because we need newer versions.
>
> There is a solution that saves /var/run to disk at shutdown and restores it at 
> bootup but I can't remember what it is.

That doesn´t protect you in case of a power failure and may increase
shutdown durations to a point where the amount of time it takes to
shutdown isn´t fully covered by the UPS.


-- 
"Didn't work" is an error.