Why we need to update an Image? ** Updated post ** How to update a Docker image with the new changes that we made in the container? Yeah, we all know that, the Docker image is the core part of…
DevOps Hacks!
[How to] Ways to monitor Prometheus exporters
How to monitor Prometheus exporters? Monitor application and node exporter, Prometheus. Python script to monitor Prometheus exporters from Prometheus servers. Different methods to monitor Prometheus exporters. API call to monitor remote Prometheus exporters A quick introduction to Prometheus Prometheus is an…
How to convert or concatenate integer with string variable in Python?
Convert int to str. Simple way to concatenate integer and string variables – Python. In some cases, you have to concatenate integer variables to string variables in your Python script. You can not do this by simply using the (+) sign. In…
Advantages of Prometheus monitoring tool
This is the second post on Prometheus and I will try to list out the Advantages of Prometheus over other monitoring tools. In the previous article, we discussed about different methodologies using in modern world and a quick introduction to…
PromQL Wildcard Examples
Why this post? If you have Prometheus cluster as your central metrics platform for your servers and the applications, you might came across situations like, have to write custom queries for fetching the data from Prometheus or for creating custom…
Setup/configure a three node Elasticsearch cluster on CentOS 7
Updated post: This article was published on December 2019. This is the normal way of installing Elasticsearch on Linux machines. You can follow this blog for setting up a three node Elasticsearch cluster on CentOS 8 as well. Instead of…
Install PuppetDB on CentOS 7
What PuppetDB can do in your architecture is unbelievable… Yeah!! I started learning the Puppet since few months ago and it’s quiet interesting. And the interesting part is the PuppetDB. It’s a puppet module to store agent nodes details. That…