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Introduction Hello my dear fellow humans, hope you are having a great day. Today’s guide is on how to recover from a disaster for Strimzi Kafka with Velero. First of all, what is Strmzi Kafka? https://strimzi.io Strimzi provides a way to run an Apache Kafka cluster on Kubernetes in various deployment configurations. Back in a while, I worked on Strimzi Kafka deployment on Openshift, very easy to set up and manage production-level Kafka cluster on Kubernetes, I have to give credit to the Strimzi project team, did a great job on documentation, support on Github discussions and active developments....

Introduction Hello guys, today I came up with an interesting write-up, that is how to set up backup and restore with Velero on Kubernetes. A year back I worked on Strimzi Kafka, a deployment solution for deploying production-level Kafka on Kubernetes. Strimzi Kafka uses persistance volume(PV) as a disk which is a managed disk from a cloud provider(e.g. Azure, AWS, etc), but I couldn’t find a proper backup solution in order to configure PV backup and restore....

It has been 2 years since I wrote a new post. Due to busy work, moving to a new city, new jobs and getting married, I wasn’t able to keep up with writing blog posts. Finally, I’m back now, I have been thinking of changing blog themes for a long time. I spent some time exploring Jekyll themes and tried to modify them according to my requirements. As you can see here GitHub issue....

Looks like my blog posts are like Sherlock TV Show episodes, posting once in a while…anyways I’m back now. As you might know, GitHub recently launched GitHub Actions where people can automate workflows like build, test, and deploy code from GitHub. I have started reading docs a little bit, I have to admit, setting up workflows on GitHub Actions is not that hard. I can directly start creating a workflow from available workflow templates in the “Actions” tab....

As we all know, enabling HTTPS to endpoints/websites is essential now-a-days. When it comes to Kubernetes, when we expose a service as LoadBalancer, the cloud provider doesn’t provide an HTTPS mechanism for the endpoint by default. If we look at the K8s setup that is deployed on AWS(For example kops), there is an actual ELB(Elastic Load Balancer) sits in front of K8s service and load balance the traffic. AWS’s ELB is not TLS enabled by default....

*A blog post that I’m actively collecting “Linux pseudo files info, cheat sheets and tips” Tips & Tricks How to force a command to return exit code 0 even if the command exited non-zero? How to install dependencies of .deb automatically which failed to install previously? Example Solution: $ dpkg -i r-base-core_3.3.3-1trusty0_amd64.deb || : \ && apt-get --yes --force-yes -o Dpkg::Options::="--force-confdef" -o Dpkg::Options::="--force-confold" -f install -y \ How to traverse directories in shell script?...

Wireshark is a great tool for analyzing traffic, whether it could be live traffic on the interface or the .cap file. The tool enables different types of filtering on packets like follow a stream, filter by protocol and IP, etc In order to install the latest version of Wireshark on Linux, one should build and install it from the source. Sometimes, building from a source is difficult because we have to hunt down the dependencies....

Long back before I worked on Openshift which is really a great container platform tool from Redhat. But installation is not as simple as Kubernetes(relatively). One of the prerequisites for the cluster deployment is Open vSwitch. Now let’s see how to install Open vSwitch v2.6.1 in RedHat7 step by step Install dependencies $ sudo yum install gcc make python-devel openssl-devel \ kernel-devel graphviz kernel-debug-devel \ autoconf automake rpm-build redhat-rpm-config \ libtool Grab OpenvSwitch source from http://www....