If you receive the “Failed to load keyring modules.” error when running keystone via CLI, you’re missing the python-keystone package. To fix. simply install via yum: # yum install python-keyring Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile epel/metalink | 9.1 kB 00:00 * base: mirror.agmn.ca * epel: mirror.symnds.com * extras: mirror.cs.vt.edu * updates: […]

When installing nova from source, you may run into issues when trying to run any of the nova services that look like this: 2013-01-10 15:13:16 9880 DEBUG nova.openstack.common.lockutils [-] Got file lock “iptables” at /var/lock/nova/nova-iptables for method “_apply”… inner /usr/lib/python2.6/site-packages/nova-2013.1-py2.6.egg/nova/openstack/common/lockutils.py:219 2013-01-10 15:13:16 9880 DEBUG nova.utils [-] Running cmd (subprocess): iptables-save -c -t filter execute /usr/lib/python2.6/site-packages/nova-2013.1-py2.6.egg/nova/utils.py:205 […]

Recently we ran into an issue where when trying to send an email on a Plesk box with Postfix as the MTA. We were having an issue sending to the main domain and their email was not hosted on the box but they were using php to send emails with a contact form. When I […]

For people pulling their hair out trying to get their Virtuozzo VPS to display the time they want and can’t figure out why the usual commands are not working, it is because the time is managed by Virtuozzo from the hardware node. So no matter what you try to do to change the time through […]

For some reason it’s not as apparent to change the outgoing Nagios e-mail address as you would think. It typically sends from nagios@your.host.name, which is fine for us nerds, but doesn’t look as nice when you’re providing monitoring services for a client or a co-worker. Please note that this article assumes you’re using sendmail! In […]

If you are running Plesk and you want to run something from a directory outside of the httpdocs directory you can do this simply by adding a vhost.conf file.  You will need to create the vhost.conf file in conf/ in your websites main directory. cd /var/www/vhosts/domain.com/conf/ You can create this with your favourite editor. vim vhost.conf <Directory /var/www/vhosts/domain.com/httpdocs> […]

I just finished running fsck on an LVM and was having some issues since I was actually trying to run the check on the disk itself rather then the LVM. I completely forgot that you needed to run it on the actual individual LVM’s which prompted me to add this to our blog for others […]

This was my way of making up for it.. a little unorthodox, but it sure did the trick!

Recently, we have had some issues where one script or website would cause an Apache child process to consume all of a server’s RAM. This eventually led to memory swapping and a kernel panic if left for a matter of minutes. We initially had set our eyes on RLimitMem, but quickly discovered that it only […]

We’re pleased to announce that Dynamic Hosting has upgraded our Silver, Gold, and Platinum dedicated servers! Included in the changes are: Silver has gone from 2GB to 4GB of RAM Gold has gone from 4GB to 6GB of RAM Platinum has gone from being a RAID-1 on a SAS6ir to a RAID-5 on an H700 […]