thoughts and projects
This is a topic covered over and over on the internet and yet I can never find the quick guide I need. Here for my notes are how to modify and rebuild an RPM from source. First, download the SRPM and install it: You may see some errors about groups, you can ignore these. You …
Continue reading “Modifying and rebuilding an RPM from source”
I had a strange issue today regarding a particular expired certificate on a webserver. The problem was that the server in question was an nginx reverse proxy that proxied many domains and contained many hundreds of certificates. For various, um, “technical reasons”, I could not locate the exact cert that was bad. I only knew …
Here is how to create a simple borg backup. Something more along the lines of a zip file than a careful backup system. I’m using this method for long term storage. The primary benefits are de-duplication and compression. Again, to clarify – these are not backups meant to be updated each day/week/month. These are simply …
I ran into a few issues trying to use a non-default private key file with lftp. Here is how I got it to work: inside ~/.lftprc put The important items are what is passed to the -i option – this should be the private key you want to use. In my example I’m also using …
Continue reading “Using a private key file with sftp over lftp”
To install nc aka netcat on Ubuntu, type: Simple enough. I added this entry because I noticed many resources reference only netcat and not nc. I thought this might be of help to someone needing “the nc command” without knowing to search for netcat. Enjoy your day.
I had a particular Centos 8 box that had very slow logins but over ssh but also using su. The issue was not with dns and ssh. I finally found the problem – or at least the fix (related to systemd, sigh): The server was running inside of openvz so perhaps there were resource issues …
Continue reading “Slow login and su on Centos 7 (not an ssh or dns problem)”
reboot the server at grub menu, press up/down to pause auto booting select top menu item, press e (to edit) in editing menu, go to end of line starting with “linux” and add “rd.break” press control-x to boot using this edited grub command line when the server starts you should not have to login at …
inside ssh:
If your Virtualbox screen is too small, go to preferences and adjust screen scaling to 300% (or your choice). You’ll need to restart any running virtual machine to see the effect of this. largely from : https://itsfoss.com/install-arch-linux/
Over the years innodb has caused me more trouble than anything else in the LAMP stack. MyISAM tables seem to work and repair without issue. Innodb seem to be endless trouble. Alas, clients need them so I have to make them work. Today a mysql server crashed and wouldn’t restart. A few of the errors: …
Continue reading “When mysql won’t start due to innodb errors”