Hey for all of you hand-rolling a Kubernetes / Docker cluster, I thought I’d mention a bug with Centos 7.x that is still yet to be fixed. The error is: /proc/sys/net/bridge/bridge-nf-call-iptables: No such file or directory. The fix is simple. Just execute the following command (as root). $ modprobe -v br_netfilter Problem solved. If you…
Tag: CentOS
Which Linux Distribution to Choose?
There are so many linux distributions out there and while they are all very similar, they are different in ways due to their target audiences. Some are targeted more towards the end-user like Ubuntu while others are clearly targeted towards the Enterprise. Ubuntu is a great distribution for a desktop replacement, but for me, I…
Backup your Linux Server configuration for a really fast restore
Every once in a while, we have to build a server. You’ve spent the time installing and configuring everything and you want a snapshot for Posterity’s sake. Here’s how to do it quickly. This little command will simply take a snapshot of everything of importance and for the most part allow you to restore your…
Automated Backups to Amazon S3. WordPress example explained here.
There are tons of Automated backup plugins for WordPress, but the reality is you’re assuming they work unless you’ve actually restored one of them. This article will explain how to do this without using anything fancy like a backup program. In fact, I just give you a few scripts and of course the old, trusty,…
centos 5 squirrelmail change sqlpass plugin
If you’ve had issues with getting the change_sqlpass plugin to work on squirrelmail, there are definitely quite a few mashinations of the system on how to get it to work on Centos 5.x So here’s how I got it to work. Please keep in mind that the following matters. Your SQL Mail Table called users…
Updating PHP to on Centos 5.x
Updating PHP on Centos 5 can be confusing with all of the different tutorials out there, but here’s one that absolutely works.
The Pitfalls of Yum Update and Postfix, MySQL, SASL, and TLS
While CentOS and Redhat have a wonderful update facility called Yum, there are some pitfalls to just randomly issuing a ‘yum update’ especially if you have very little experience with the intricacies of your configuration. Like any “techy” geek, I was bored and randomly decided to update my mailserver cluster last night. (yes, I have…
Updating Postfix on CentOS 5
Well, I decided today would be a good day to update the mailserver so I decided to do a yum -y all. Needless to say, it went well.. but dumbass me didn’t bother to check the mailserver. So.. needless to say, all day, I had my mailserver down due to the fact that the postfix…