When changing glibc versions, it's possible to end up with corrupt indexes in PostgreSQL.

Are My Indexes Affected?

If your database has...

If the project you're working on has, say, 39 repositories and counting in GitLab and you need all the repos checked out for some reason, here's how to do it.

Checking out all repos

1. Create a personal access token for GitLab that has the `A...

Apply Test Driven Development(TDD) to the process of building container images by defining test before writing code and automate the testing process. Iterate through the TDD cycle while developing and running the tests later in continuous integrat...

How can I configure virtual IP's?

There are two parameter to set up virtual ips in Keepalived:

virtual_ipaddress

Addresses defined here are included into the VRRP Packages and are therefore limited in number, especially with IPv6.

Add...

We have observed Lenovo laptops with nvidia graphics losing performance after they have been in use for a few minutes. While we have not been able to pinpoint exactly what triggered the performance loss, we have found it mostly correlated with hig...

aws ec2 describe-instances --output text --query 'Reservations[].Instances[?!not_null(Tags[?Key == `aws:autoscaling:groupName`].Value)] | [].[InstanceId]' | xargs -L1 -t aws ec2 modify-instance-attribute --disable-api-termination --instance-id...

If you want to automatically delete old container images from your Elastic Container Registry, the solution is a quite simple ECR Lifecycle Rule that deletes images e.g. 7 days after they have been pushed to the registry.

If you however want to _...

Creating Nagios Config with puppet

Let's have a look at the classic way of managing Nagios configuration with exported Puppet resources.
Here is [a good article about the topic](https://www.ericholzbach.net/blog/automating-nagios-with-puppet-a...

on the bash (issued as postgres user)

Start/Stop/Restart PostgreSQL

pg_ctl -D $configdir start|stop|restart

Start/Stop/Restart the corresponding PostgreSQL using the given configuration directory. The configuration directory sh...

If you have a single node elasticsearch instance and indices with replicas enabled your cluster state will be yellow. If you have replica shards they should be moved to a different node for high availability purposes. With a single node this can't...