My configuration for bash, vim, git, tmux and a few other tools can be found on GitHub now.
I have spent a considerable amount of time to get them working on OS X and Linux.
(Tested on Mac OS X Yosemite 10.10.3 and Debian 7.8 – YMMV!)
I am frequently connecting to several servers over SSH at once and like to use tmux to organize those different sessions. To be able to keep track which pane is which server I am using the following function in my
.bashrc file to display the machine name in tmux’s pane title.
Today two of my servers went down. It turned out, that the datacenter they are hosted in had a slight connectivity hiccup – nothing serious. While I was battling my monitoring system and frantically typed support tickets, I wanted an audible alert if the hosts where reachable again in the meantime.
That’s when I thought of OS X’s text to speech system and devised the following little shell script.
It will announce that the host is back up with your configured standard voice as soon as there is a ping response and then quit. Just copy it in your
.bashrc file call it with the desired hostname or IP address, leave it running in a Terminal window in the background and turn up your speakers.
One of my most used means of monitoring what’s going on at a remote Linux server, is looking at the log lines that each daemon or client program writes to the disk. Using this technique you can see a real time view about what is happening and find out if there are any outstanding errors or optimizations in your configuration. I am going to show how I tackle this task and what tricks I use to make tons of lines of dull text more readable.
Recently I’ve had to re-engineer my whole backup strategy because of a looming hardware issue on my old backup server. Since I am operating servers at Hetzner, I purchased some backup space there and based my new system around their available system. The new strategy consists of several key components:
- Mounting a remote directory via sshfs
- Ensuring the remote mountpoint is always available using autofs
- Creating a loopback filesystem on the remote storage
- Incremental rsync snapshots using my Hactar backup script