MySQL max_connections limited to 214 on Ubuntu Foo

After moving a server to a new machine with Ubuntu 16.10 I received some strange Postfix SMTP errors. Which turned out to be a connection issue to the MySQL server: postfix/cleanup[30475]: warning: connect to mysql server 127.0.0.1: Too many connections Oops, did I forgot to up max_connections during the migration:

Nagios Enabling External Command on Debian based Distributions

While debugging my check disk problem after the 15.10 upgrade, I saw that I forgot to enable external commands. That is handy, when you want to re-schedule a check to see, if your changes took effect. Again, something that is easily activated. So if you see something like this, then you might want to make… Continue reading Nagios Enabling External Command on Debian based Distributions

Nagios check_disk Foo on Ubuntu 15.10

Another day another foo, this time done to the check_disk plugin for Nagios on Ubuntu. After updating to 15.10 my disk space check all of a sudden failed with this one here: DISK CRITICAL – /sys/kernel/debug/tracing is not accessible: Permission denied

The Apache “Could not reliably determine the server’s fully qualified domain name, using 127.0.1.1 for ServerName” Foo on Ubuntu

If you are using Apache on Ubuntu, then you most likely ran into the annoying warning about determining the fully qualified domain name of your server. Something like this will show up in your logs, on start of the server or on log rotation: apache2: Could not reliably determine the server’s fully qualified domain name,… Continue reading The Apache “Could not reliably determine the server’s fully qualified domain name, using 127.0.1.1 for ServerName” Foo on Ubuntu

Wicd On Ubuntu Fails To Start Foo

Running Ubuntu, like most mainstream Linux distribution, means nowadays automatically that your computer gets exposed to the NetworkManager and its sideeffects. Maybe this tool might work for some desktop users, but it definitely never worked for me. It is cumbersome to configure, doesn’t like if an interface is managed manually or you want to change… Continue reading Wicd On Ubuntu Fails To Start Foo