I’m writing this for my future self. Today I had a remote server that was down to power failure. On site a person read me the boot prompt, and I was surprised with the message ‘net.eth0 does not exist’. WTF? After they logged in, they did an ifconfig -a and told me that net.eth0 was… Continue reading net.eth0 does not exist? ifconfig shows enp4s0?
Way back, I wrote a how-to on replacing a primary drive. I had to reference this with a recent server that had a primary failure, and want to update the process. First, I followed the above how-to and ran into MAJOR issues with grub. Since that article, there has been an update to grub2, which… Continue reading Replace primary drive how-to (2021)
I’ve been running an old gentoo-sources kernel on Rackspace for a time and it was desperate times to get it updated. In the past, it was a major pain in the butt to do this. At one point, I was able to update it via PV Grub – which involved support to configure it with… Continue reading Updating Kernel on Rackspace Cloud
Lately, I’ve been working on improving page speeds on a variety of sites. I’ve been referencing PageSpeed Insights at Google, and it’s been quite challenging to get the speeds down. One option was to install mod_pagespeed on my apache 2.4 server. Mod_pagespeed is an Apache module that does some work transforming the output HTML to… Continue reading Installing Mod_PageSpeed on Apache-2.4 / Gentoo
So udev-197 has been released as stable and in portage now. This requires a kernel config change, and if this is not in place, your server will be dead in the water. You will need to enable CONFIG_DEVTMPFS. Normally, this isn’t a problem, just build a new kernel and go from there, but I have… Continue reading Dealing with udev-197 and older virtual images at Rackspace
I have a client that needs to do large backups off site. Originally we were managing that with a offsite Linux server and dirvish, but it’s apparent that disk and bandwidth is going to be an ongoing issue. I wanted to look at other possibilities. I have a client that needs to do large backups… Continue reading Duplicity and Rackspace Cloud Files
It is really uncanny that I run across these problems during the holidays. On Dec. 24 one of my boxes was reporting a “read only filesystem” on the /var partition. My alerts didn’t notify me since services were up, but mails weren’t happening and mysql was reporting crashed tables. The first time I was able… Continue reading Dealing with corruption on drives – reiserfsck –rebuild-tree how to