Category Archives: DevOps

Centralized Configuration Management using Hashicorp Vault and Consul.

By | June 4, 2020

IntroductionThis document discusses configuration management and more specifically a centralized infrastructure which stores sensitive information like usernames, passwords, tokens, TLS certificates, urls endpoints, AWS credentials etc. Configuration management becomes difficult as the application grows and has scaling requirements. This document explores the standards and best practices followed in the industry for implementing stable and secure… Read More »

How to resolve the Openshift WebConsole Login Issue with AD Credentials.

By | May 6, 2020

If you are facing LDAP authentication issue in existing openshift cluster anytime or probably after deploying Self Signed/SSL certificate or after performing any of the major activity on the cluster, then you might need to check this article.  If you face intermittent login issue using your LDAP credentials like for every 3 requests (Incase of… Read More »

How to Enable Auto Approval of CSR in Openshift v3.10+

By | May 3, 2020

There is a Slight Change starting from OpenShift v3.10  Cluster. Nodes certificates are not Completely redeployed through playbook but through a different mechanism which is explained briefly below. Basically, SSL Certificates will be valid for the period of 1 year and around 85% of the certificate lifetime,  the node will trigger a CSR that would have to be approved for… Read More »

How to Renew SSL Certificate of Your OpenShift Cluster – 3.x

By | May 1, 2020

In this Perticular Article, we will see how we can renew the SSL Certificate in OpenShift Cluster v3.6. This implementation steps will also work in v3.10 and above except major version change like v4.0 Note: In v3.10 and above, there is a slight change. Worker nodes triggers a CSR Which you need to approved manually… Read More »

Shell Script to take MySQL Database Dump and Push It to AWS S3

By | October 11, 2019

There will a multiple cases when you will be asked to Automate the backup of mysl dump and store somewhere. there will be a multiple way of doing this but in this article we will see how we can take the msql dump of a database and push it to the AWS S3 bucket. Just… Read More »

Automate EC2 AMI Backup Using Lambda Function

By | September 27, 2019

If you are Working on AWS you must be working with EC2. Creating and managing Your Appication On EC2 Would definitely require to have a backup strategy.  Its quite annoying to take the backup of Selected Servers on Regular Basis or in some interval of time. Taking backup is Important but managing the retention time… Read More »