Open Source Web Hosting

I was having some trouble with spam bounce backs clogging up a Qmail server by getting stuck in the queue for days. This page has some good solutions for handling it.
I used qmhandle to view the queues and make sure nothing Local was pending, then wiped out about 1750 spam bounces. woo hoo!

It seems the document for vhost config left out the line for ModPagespeedGeneratedFilePrefix because when I copied them I got this error:
mod_pagespeed is enabled. The following directives must not be NULL\nModPagespeedFileCachePath=/var/cache/mod_pagespeed/\nModPagespeedGeneratedFilePrefix=
Configuration Failed

This is what I used and seems to work

ModPagespeed on
# The ModPagespeedFileCachePath directory must exist and be writable by the
# apache user (as specified by the User directive).
ModPagespeedFileCachePath "/var/mod_pagespeed/cache/"
ModPagespeedGeneratedFilePrefix "/var/mod_pagespeed/files"

# Other ModPagespeed directives here ...
# This page lets you view statistics about the mod_pagespeed module.

Order allow,deny
# You may insert other "Allow from" lines to add hosts you want to allow to
# look at generated statistics. Another possibility is to comment out the
# "Order" and "Allow" options from the config file, to allow any client that
# can reach your server to examine statistics. This might be appropriate in
# an experimental setup or if the Apache server is protected by a reverse
# proxy that will filter URLs in some fashion.
Allow from all
SetHandler mod_pagespeed_statistics



while compiling Imagemagick on a recent version of CentOS, I saw the subject error (during “make install” to be precise)
This seems to be the solution:
yum install libtool-ltdl-devel

Tried installing Horde’s sesha (version 1.0.0beta1) on CentOS and only saw this:

Fatal error: Call to undefined method Horde_Util::addParameter() in /var/raid/www/horde/sesha/lib/View/List.php on line 96

To fix change Horde_Util::addParameter to Horde_Url:add in several places

next error: Fatal error: Call to undefined method Horde::menu() in /var/raid/www/horde/sesha/lib/Sesha.php on line 190

hmm not quite ready for prime time it would seem.

Trying to install nag on horde 5 in CentOS, kept getting the subject message, to fix:
pear install horde/Horde_Routes-beta

I had this problem with libxml2 on CentOS 5, turns out a version for both arch’s was installed,
this post solved it for me

Running into this?

bash$ sudo rpm -e zlib-devel
error: “zlib-devel” specifies multiple packages

This is because zlib-devel.i386 and zlib-devel.x86_64 are both installed. It is possible to remove them individually:

bash$ sudo rpm -e zlib-devel.i386
bash$ sudo rpm -e zlib-devel.x86_64

By default, Fedora, CentOS and RedHat shells do not specify the architecture of an RPM in the query format. This can lead to duplicate entries from queries:

bash$ rpm -q zlib-devel
zlib-devel-1.2.3-14.fc8
zlib-devel-1.2.3-14.fc8

You can use the –queryformat switch when running rpm -q, or configure the query format setting in ~/.rpmmacros.

bash$ rpm -q –queryformat “%{name}.%{arch}\n” zlib-devel
zlib-devel.i386
zlib-devel.x86_64

bash$ cat ~/.rpmmacros
%_query_all_fmt %%{name}-%%{version}-%%{release}.%%{arch}

bash$ rpm -q zlib-devel
zlib-devel-1.2.3-14.fc8.i386
zlib-devel-1.2.3-14.fc8.x86_64

I was trying to migrate a vpopmail / mysql installation to a new system and the users could not log in through qmailadmin. This post has the solution

make sure to copy the contents of /var/qmail/control/* and
/var/qmail/users/assign to the new system. also after copying
users/assign, make sure to run qmail-newu to refresh the cdb file.

modules/http/.libs/libmod_http.a(byterange_filter.o): In function `ap_set_byterange’:
byterange_filter.c:(.text+0x12c1): undefined reference to `apr_array_clear’
collect2: ld returned 1 exit status

Solution: Add this to the configure command:
--with-included-apr

with compliments and kind regards to Stefan for providing this solution

trying to set up SNMP on some virtuals for running mrtg graphs. Some of them weren’t working; the mrtg config file has this message:

> ### The following interface is commented out because:
> ### * has no ifSpeed property

I found that the Network adapter needed to be changed (or rather removed and a new one added) from “flexible” to “E1000”, then SNMP works / sees the ifspeed correctly.

I made the change with the machine powered off and the new nic has the same mac.

This works for me on CentOS 5.8

You will want to do the following as root:
yum install net-snmp

Then you will want to edit /etc/snmp/snmpd.conf to configure the service.

So that the service will start on boot, you will need to:
chkconfig snmpd on

And lastly:
service snmpd start

#############################
# my own notes:

Here is a super simple snmpd.conf file that works fine:
rocommunity public 192.168.0.0/24
rocommunity public localhost

I needed to add this line in /etc/sysconfig/iptables
-A RH-Firewall-1-INPUT -m state --state NEW -m udp -p udp --dport 161 -j ACCEPT

and restart iptables with /etc/init.d/iptables restart