server

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Switch Ubuntu Linux kernel on OVH Dedicated Gaming Servers

I've been recently working on multiple large-scale Minecraft servers. We use dedicated gaming servers from OVH and it's so far so good, expect some small issues. First, I needed to disable IPv6. It have been causing issues with »

Redirect domains to specific URLs with Traefik v2

Rewritten on Jan 7, 2020. This enables Traefik to redirect for example, foo.birkhoff.me to https://www.google.com. The TLS section is required for a full HTTPS setup. The below is a dynamic configuration, refer to »

Analyze disk space usage on CentOS / RedHat with ncdu

ncdu is an interactive disk space analyzer software on Linux, which I found itself pretty convinent. Installation It's pretty straightforward, install dependancies, configure, make and make install. Done. $ yum install ncurses-devel ncurses wget -y $ wget https://dev.yorhel. »

Send emails through Mailgun SMTP on CentOS 7

Install the dependencies: $ yum install postfix cyrus-sasl-plain cyrus-sasl-md5 mailx -y In /etc/postfix/main.cf, append the following to the end of file: relayhost = smtp.mailgun.org smtp_sasl_auth_enable = yes smtp_sasl_password_maps = hash:/etc/ »

Make cron send emails only on errors

Stop using >/dev/null 2>&1. Use https://habilis.net/cronic/. Cronic (somehow aka chronic, do they refer to the same thing?) has been a perfect workaround of the design failure of cron. According to »