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Posts under Systems Administration

Ubuntu Server update openssl requires reboot

Posted by Michael under Linux, Systems Administration (2 Responds)

So I had the joy of updating an Ubuntu 10.04 LTS web server today. I logged in and did an apt-get updateNext I did an aptitude dist-upgrade I was told the following packages would need to be updated. apache2 apache2-mpm-prefork apache2-utils apache2.2-bin apache2.2-common bzip2 dpkg dpkg-dev libapache2-mod-php5 libbz2-1.0 libssl0.9.8 openssl php5 php5-cli php5-common php5-curl php5-gd […]

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Force Pandora Traffic out of a specific interface with pfsense

Posted by Michael under Systems Administration (No Respond)

Something that has started using TONS of our bandwidth at work is online radio. Currently the most popular on our network is Pandora. It counts for nearly 1/3 of the daily traffic we pull as a company though our squid proxy server. A little bit about us: Our company currently has about 100 employees, and […]

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Who owns that IP

Posted by Michael under Linux, Systems Administration (1 Respond)

You may find your self in a situation where you need to know who owns an IP, and maybe even the netblock. Well today I was in just that boat. An unnamed company that we do business with made a new feature for their website. This feature required our users to have an active X […]

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Troubleshooting your DHCP Server with tcpdump

Posted by Michael under Linux, Systems Administration (3 Responds)

Having issues with your DHCP server? Maybe tcpdump can help. The first thing to do is to log onto your dhcp server, and gain root access. => ssh mike@dhcpserver => sudo -s Next I need to verify my dhcp server is up and running => ps waux|grep dhcp dhcpd 1490 0.0 0.2 16080 2452 ? […]

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Extending a Logical Volume

Posted by Michael under Systems Administration (2 Responds)

When you run out of space and are using LVM its fairly easy to extend your volume. In my case I am using Vsphere 4, FalconStor IPStor 6, and Centos 5. I will show you what to do to get the extra space you need for your Centos 5 machine with out any downtime. Many […]

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