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Reply to topic   Topic: AH00708: Cannot open data file

Joined: 24 Feb 2019
Posts: 2
Location: US, Newark

PostPosted: Mon 25 Feb '19 18:01    Post subject: AH00708: Cannot open data file Reply with quote

I'm experiencing a [cache_disk:error] problem with httpd-2.4.34 on fedora28. It appears to happen every few minutes. I have no idea what could be causing it. I had previously responded to an old, existing thread on this topic, but thought it would be better to start a new thread. I'm really stuck.

This is a joomla-3.8 host (linuxsecurity.com). I believe this started after we changed the site name from webstage to www, although it could be a coincidence.

I've tried setting EnableSendfile to off, but it hasn't helped. The document root is not on an NFS share or any of the other issues explained in the Apache docs here:

[Sun Feb 24 09:05:14.882412 2019] [cache_disk:error] [pid 24070:tid 140295157044992] (2)No such file or directory: [client] AH00708: Cannot open data file /var/cache/httpd/HRx/pOb/xK7/mTz/tMN/ioVCrxg.header.vary/ULG/TWv/f_X/eCj/Q5X/QCqsi_Q.data

Below is my config as it relates to caching:

CacheQuickHandler off
CacheLock on
CacheLockPath /tmp/mod_cache-lock
CacheLockMaxAge 5
CacheIgnoreHeaders Set-Cookie
CacheRoot "/var/cache/httpd"
# Enable the X-Cache-Detail header
CacheDetailHeader on

CacheEnable disk "/"
CacheHeader on
CacheDefaultExpire 800
CacheMaxExpire 64000
CacheIgnoreNoLastMod On
ExpiresActive on
ExpiresDefault A300
CacheDirLevels 5
CacheDirLength 3
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James Blond

Joined: 19 Jan 2006
Posts: 6799
Location: Germany, Next to Hamburg

PostPosted: Wed 27 Mar '19 16:27    Post subject: Reply with quote

Maybe you can set the LogLevel[1] for the cache to a higher level to get that debugged.

Note that you can set that for each module,so you won't have debug content from all modules



LogLevel warn ssl:error auth_digest:error socache_shmcb:warn mpm_worker:warn fcgid:info

[1] https://httpd.apache.org/docs/2.4/mod/core.html#loglevel
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