If you're about to handle X509 certificates and don't want to remember/google a handful of openssl commands you...
When restoring a barman PITR backup you may encounter this error: Copying required WAL segments. EXCEPTION: {'ret': 2, 'err': '/bin/sh...
There is an issue with when restoring a PostgreSQL dump created with pg_dump < v11 with pg_restore > v10:
Unfortunately I couldn't find a complete and working documentation on how to do this. But this steps succeeded (at...
collectd5 in version 5.9.0 is broken and you upgraded it everywhere. But because it's FreeBSD it does not...
Sometimes you might need to do some task in GitLab which would be tedious if you'd have to do...
This is not encouraged because this change is easily forgotten. We recommend using this only if you know what you...
In case you're wondering, when concat-ing server certificate and intermediate certificates, the server certificate comes first.
There are two ways within systemd to manage the fact that you need the gluster service active before mounting the...
If freshclam updates are failing even though the update servers are available and you find error messages like the following...
This should not be necessary in any case and is only for special cases, for e.g. if the assets...
This card is just about creating simple PostgreSQL dumps. This is no instruction for a backup strategy nor a guide...
Hint This applies only to distributions based on Debian. Requirement You need to setup the PostgreSQL Apt Repository first.
on the bash (issued as postgres user) Start/Stop/Restart PostgreSQL pg_ctl -D $configdir start|stop|restart Start/Stop/Restart the corresponding PostgreSQL...
If you're trying to start a cloud-init based Ubuntu VM with KVM you will suffer long boot times...
When receiving a new SSL-Certificate for an existing SSL-key it should be checked that they match cryptographically.
You will need to look here and find your own device. Look for the "bootable CD" download, which will give...
Don't use exec without user parameter If you use exec without user parameter, the command will get executed as...
If you want to perform a failover on another haproxy backend server this is the way you should do it...
Brendan Gregg is the Linux performance god. Use the information in this link to find out what ways there are...
The puppet server caches custom functions. If you edit an existing function (e.g. while you’re developing it), you’ll...
Sending a testmail from a server with a configured exim is easy as pie. From your usershell: tell exim that...
Bash stores the exitcodestatus of piped commands in the environment variable PIPESTATUS So you can just echo ${PIPESTATUS[@]} to get...
Like Railscasts or Ruby Tapas, but for Linux.