Tag "rancher"

Flacky service connectivity on k8s production cluster while using fleet

As of a sudden, we started to experiencing connectivity issues in our production cluster. This post explain what happens and how

Posted February 25, 2022 by Adrian Wyssmann ‐ 5 min read

I did it again or how I messed up a kubernetes upgrade of the Rancher downstream cluster

While last week I upgraded the local Rancher cluster in non-production with issues, today was time for one of the downstream clusters. Let me explain what happened and what we learned out of it.

Posted February 15, 2022 by Adrian Wyssmann ‐ 4 min read

How I messed up a kubernetes upgrade of the Rancher local cluster

Today I wanted to update the local Rancher cluster to the latest kubernetes version, which went horribly wrong. Let me explain what happened and what we learned out of it.

Posted February 10, 2022 by Adrian Wyssmann ‐ 5 min read

Testing webhooks with webhooks.site in an air-gapped environment

As a reader of my blog you are aware that at my employer we are using Rancher and MS Teams for alerting. Unfortunately this was not working properly, so I had to start debugging.

Posted February 2, 2022 by Adrian Wyssmann ‐ 3 min read

Deploy RHACS with Rancher fleet

In my last post I talked about Rancher fleet, as a next step we will manage RHACS with fleet.

Posted November 10, 2021 by Adrian Wyssmann ‐ 4 min read

Fleet, the GitOps tool embedded in Rancher

There are a lot of different GitOps solution out in the field. But when you are using Rancher, you already have one at hand. As a Rancher user, I had a look what it is and how it works

Posted October 29, 2021 by Adrian Wyssmann ‐ 5 min read

Kubernetes node is unavailable due to permanently crashing rancher-agent pod

After our kubernetes cluster was fine for some weeks, one of our nodes was suddenly unavailable due to permanently restarting rancher-agent

Posted October 22, 2021 by Adrian Wyssmann ‐ 4 min read

Rancher 2.5.x v2 logging using splunk

Installing and configuring logging with Rancher is quite easy, but in combination with Splunk some guidance might be helpful. I guide you trough the process of the complete installation and configuration

Posted September 9, 2021 by Adrian Wyssmann ‐ 5 min read

Rancher 2.5.x monitoring and alerting with MS Teams

Installing monitoring and configuration with Rancher is quite easy, but in combination wit alerting for MS Teams some guidance might be helpful. I guide you trough the process of the complete installation and configuration

Posted September 9, 2021 by Adrian Wyssmann ‐ 5 min read

Collecting logs from salt-managed nodes without ssh access

We manage our baremetal kubernetes nodes with salt and for security purposes, there is no direct ssh access. The only way to access them is using salt-master. This can be challenging if you want to get some files from the nodes, but it's possible.

Posted September 8, 2021 by Adrian Wyssmann ‐ 3 min read

Upgrade istio, monitoring and logging from Rancher 2.4.x. to 2.5.x

While we are using Rancher 2.5.x our current cluster management solution, we actually still are using the old istio- and monitoring-stack v1 rather than v2. We want to change that but it is not as easy as we thought.

Posted August 5, 2021 by Adrian Wyssmann ‐ 4 min read