Category: DevOps

What is SLI, SLO, SLA & Error budgets in Site Reliability Engineering?

SRE is a discipline which is used to automate IT operations tasks - e.g. production system management, change management, incident response, even emergency response - that would otherwise be performed manually by systems administrators (sysadmins).  It can help organizations to improve the reliability of their software systems.  SRE uses SLIs, SLOs, error budgets, and SLAs … Continue reading What is SLI, SLO, SLA & Error budgets in Site Reliability Engineering? →

How to read variable set as File type in gitlab-ci.yml ?

If you have created variables in gitlab CI/CD setting, here is how you can access it in your gitlab-ci pipeline. In the above example, the variable has following settings Type: File Key: DB_ACCESS_URL Value: jdbc:oracle:thin:@myoracle.db.server:1521:my_sid To access this in your pipeline , gitlab provides 2 ways echo $Key will give the file path cat $Key … Continue reading How to read variable set as File type in gitlab-ci.yml ? →

What is HELM, why do you need it & what problem does it solve for Kubernetes?

Helm is a tool which helps to manage Kubernetes applications. Deploying applications to Kubernetes is not a simple task and some of the concepts and techniques for deploying and managing applications and services has a steep learning curve. To deploy a simple spring boot application with PostgreSQL backend, explained in blog we had to write … Continue reading What is HELM, why do you need it & what problem does it solve for Kubernetes? →

Why is POD the smallest deployable unit in Kubernetes and not containers??

Kubernetes does not work directly with containers, it uses POD as the smallest deployable unit.A container contains all our application code and its dependencies packaged as a single unit, but in order for Kubernetes to run and manage these containers, it needs additional features, for example restart policy which defines what to do with a … Continue reading Why is POD the smallest deployable unit in Kubernetes and not containers?? →

Containers and Developer Experience – 2

In the previous blog i shared how Jib, an open source tool maintained by Google accelerates the development of docker images for java based application.But if you are doing deployment in a Kubernetes environment then you should try Skaffold, another open source container tool from google which simplifies common operational tasks that you perform when … Continue reading Containers and Developer Experience – 2 →

Containers and Developer Experience

Packaging and shipping software as containers has numerous benefits, but doing it without the right tools and techniques leads to poor developer experience.Some of the challenges that i faced are: Local Installation of Docker : Getting Docker installed with root account or account with root privileges has been a challenge due to organizations security policies and this had … Continue reading Containers and Developer Experience →

A/B Testing vs Canary Release vs Blue Green Deployment

A/B Testing In simple terms A/B testing is a way to compare two versions of something to determine which performs better .In an A/B test, some percentage of your users automatically receives “version A” and other receives “version B.It is a controlled experiment process. To run the experiment user groups are split into 2 groups. … Continue reading A/B Testing vs Canary Release vs Blue Green Deployment →