If you find yourself low on disk space, check the size of the Systemd journal logs as a way to easily free up some space. $ sudo journalctl –disk-usage Archived and active journals take up 528.0M in the file system. # reduce size to 300 Mb sudo journalctl –vacuum-size=300M There are automatic jobs that trim … Linux: reducing disk usage of Systemd journal logs
If your systemd service is failing with the following error message: XXX.service: Start request repeated too quickly The first thing to do is fix any underlying issues. Use ‘systemctl status <service>’, ‘journalctl -u <service>’, and search any log files produced by the service to understand why the service failed multiple times and exceeded its StartLimitBurst. … Ubuntu: resolving systemd error, “Start request repeated too quickly”
The Go language with its simplicity, concurrency support, rich package ecosystem, and ability to compile down to a single binary is an attractive solution for writing services on Ubuntu. However, the Go language does not natively provide a reliable way to daemonize itself. In this article I will describe how to take a couple of simple Go language programs … GoLang: Running a Go binary as a systemd service on Ubuntu 22.04
GitHub has a feature that allows other members to follow your account and receive alerts on actions you take in any repository. Unfortunately, there is not a setting that allows you to disable this at a global level. The only workaround is to temporarily block the user, which removes the relationship. This can be done … GitHub: removing followers with the GitHub api
If you have a Bash script that needs to run periodically, you can run it using a crontab entry. But you can also have it invoked by Systemd using systemd.timer. Furthermore, you can run Systemd services as user-level services instead of the typical system-level service for even further isolation. Running via Systemd provides more powerful … Ubuntu: Running a bash script periodically with a user-level Systemd timer
If you have a Bash script that needs to run periodically, you can run it using a crontab entry or file. But you can also have it invoked from Systemd using systemd.timer. Running via Systemd provides more powerful constructs for invocation, configuration, monitoring, and logging. In this article, I will show how to periodically run … Ubuntu: Running a bash script periodically with a system-level Systemd timer
By default, if an SSH key file is dropped into your personal ‘~/.ssh’ directory that matches a set of standard names, then it will automatically be used as an identity when logging into a remote site (id_rsa, id_dsa, id_ecsda, id_ed25519, or identity). For example, this makes it simple to comply with Github’s requirement to use … Ubuntu: loading a key into ssh-agent at login with a user-level systemd service
Although in modern architectures you typically see Spring Boot executable jars running as the primary process of a container, there are still many deployment scenarios where running the jar as a service at boot time is required. With Ubuntu 16.04, we can use the built-in systemd supervisor to run a Spring Boot application at boot … Java: Spring Boot application as a service using systemd on Ubuntu 16.04
This article has been updated in October 2018 and is now tested for HAProxy 1.8.14. The reload functionality in HAProxy till now has always been “not perfect but good enough”, perhaps dropping a few connections under heavy load but within parameters everyone was willing to accept. And because of the potential impact, a reload was … HAProxy: Zero downtime reloads with HAProxy 1.8 on Ubuntu 16.04 with Systemd
Syslog is a message logging standard has been around for decades, but has renewed popularity as a method of log capture with the advent of containerization and centralized logging solutions. Enabling an Ubutu 14.04 or 16.04 host to act as a syslog server only takes a few simple steps.
Update Oct 2022: This article has now been written for GoLang 1.19 on Ubuntu 22.04. Go has changed the way it handles SIGURG signals, and Systemd services no longer directly forward to syslog. Read my newer article here. The Go language with its simplicity, concurrency support, rich package ecosystem, and ability to compile down to a single … GoLang: Running a Go binary as a systemd service on Ubuntu 16.04
The Go language with its simplicity, concurrency support, rich package ecosystem, and ability to compile down to a single binary is an attractive solution for writing services on Ubuntu. However, the Go language does not natively provide a reliable way to daemonize itself. In this article I will describe how to take a couple of simple Go language programs, … GoLang: Running a Go binary as a SysV service on Ubuntu 14.04