Re: FreebSD jailed Apache 2.4 rewrite/proxy module errors (Apache Users)

On Wed, Aug 13, 2014 at 6:40 AM, Goran Tepshic <purpleritza@xxxxxxxxx> wrote:

Just set up a FreeBSD jail to run httpd in it and all works good except these two, rewrite/proxy modules.
These are error logs excerpts:

mod_rewrite error:

[rewrite:crit] [pid 43447] (13)Permission denied: AH00666: mod_rewrite: could not init rewrite_mapr_lock_acquire in child

mod_proxy error:

[proxy:crit] [pid 43447] (13)Permission denied: AH02479: could not init proxy_mutex in child

Not sure permissions of what are being denied as html in document root is being served just fine when these modules are disabled.

I tried googling but found nothing but rubbish.

Please help, this thing is making me crazy.

httpd/APR on FreeBSD uses a file-based mutex ("flock") by default. It looks like the mutex files are placed in a location where the httpd child processes don't have permission.

You should be able to use 2.4's Mutex directive (http://httpd.apache.org/docs/current/mod/core.html#mutex) to resolve the issue.

Perhaps the necessary magic is

Mutex file:/some/path/ default

where /some/path is writable by httpd parent and child. I don't *think* this is some jail-specific issue, other than that child-writable paths in the jail may be different/more limited due to the way it is set up.

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