Linux, programming and more
Watchdog is responsible for monitoring tiny systems like raspberry PI, BeagleBone or any other system.
The main functionality of the watchdog is to check, if the system is still responding, lets say, to keep-alive messages.
Let’s assume, the system is stuck in a kernel panic, this will be automatically restarted by watchdog after reaching a grace time period. So a manual rebooting by unplugging the DC adapter is not required at all.
Virtualenv was for me until 2020 a python-default tool for creating isolated virtual environments for python projects.
Virtualenv was always easy to handle and known as a mature pythonic tool under python developers.
But now, I think pipenv is stable and known enough to switch to it.
A lot of different tools are around the internet which can be useful to determine different SMTP troubles.
The most of them are very useful but they are all reachable over the internet and don’t provide any kind of API for integration of monitoring or complex integration in (pre)deployment pipelines.
This is a short overview of some command line tools for developers and administrators, to check the e-mail flow during developing, emulate and intercept outgoing emails and afterwards for maintaining the setups.
Apache Subversion often abbreviated as SVN is a software versioning and revision control system. This post was written during a integration and PoC of SVN in a deployment stages.
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CentOS 8 has PostgreSQL within the default repositories but its’ a bit outdated – currently during writing of this post, it’s the version: 10.6.
The currently official version of PostgreSQL is version: 12.1
So this instruction was written to install the current actual version of PostgreSQL 12.1 on CentoOS 8 system.
Let’s get started!
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