Relocating /var/lib/docker directory
Docker uses /var/lib/docker to store images, containers, and local named volumes. Deleting this can result in data loss and possibly stop the engine from running. However in case if it is needed to free some space on the root volume, it is possible to relocate this directory to another partition or drive. This tutorial describes two ways on how to move the /var/lib/docker directory in Linux.
Installation Linux error - Timeout when waiting for 127.0.0.1:10250 to stop
If you see the following errors in the installation log: failed: [node1] (item=10250) => {"changed": false, "elapsed": 2, "item": "10250", "msg": "Timeout when waiting for 127.0.0.1:10250 to stop."} failed: [node1] (item=10248) => {"changed": false, "elapsed": 2, "item": "10248", "msg": "Timeout when waiting for 127.0.0.1:10248 to stop."} failed: [node1] (item=10249) => {"changed": false, "elapsed": 2, "item": "10249", "msg": "Timeout when waiting for 127.0.0.1:10249 to stop."} failed: [node1] (item=10256) => {"changed": false, "elapsed": 2, "item": "10256", "msg": "Timeout when waiting for 127.0.0.1:10256 to stop."} This means that the ports for the Kubernetes cluster are closed: TCP 10248 - 10259 Kubernetes Note - these ports need to be open even if it is not a multi-node deployment.
An overview of Sisense Linux microservices and what they do
An overview of Sisense Linux microservices and what they do This article provides an advanced description of Sisense’s Microservices and how they work internally. This is mainly for Administrators responsible for supporting Sisense in their organization. When we deploy Sisense on the Linux platform Sisense application deploys multiple pods this article helps us understand how they are tied to each Sisense functionality and how they internally operate. See Sisense Basic Concepts and Terminology and Sisense Architecture for a high-level overview. [PLEASE OPEN ATTACHMENT TO VIEW REMAINDER OF THIS ARTICLE]
How to properly reboot a k8s node(s)
As part of maintaining a healthy and robust Kubernetes (K8s) cluster, occasional reboots of nodes might be necessary. Whether for system updates, hardware maintenance, or other reasons, it's essential to follow a structured process to ensure minimal disruption to running workloads. Below is a step-by-step guide on safely rebooting nodes within a Kubernetes cluster, covering both Red Hat Enterprise Linux (RHEL) and Ubuntu systems.
