List of top container runtime interface projects

Before we deep dive further into container runtimes projects, let’s see what containers actually are, Hows its been created? What is a container? Container Image – Container images is nothing but tarballs with a JSON configuration file attached. Usually this has multiple layers(filesystem) on top of each other. Each layer(filesystem) has files related to base… Read More »

Do you know Container Linux (CoreOs) and Tectonic journey towards OpenShift?

The CoreOS corporation was acquired by Red Hat in May 2018 for $250 million; post-acquisition, the main enterprise Container Linux distribution, combined with Red Hat’s similar Project Atomic, has been renamed Red Hat CoreOS, while its open source community has been aligned with the Fedora Project as Fedora CoreOS. Today, both teams(CoreOS & redhat) are… Read More »

JOB FOR DOCKER.SERVICE FAILED BECAUSE THE CONTROL PROCESS EXITED WITH ERROR CODE

[root@localhost ~]# systemctl restart docker Job for docker.service failed because the control process exited with error code. See “systemctl status docker.service” and “journalctl -xe” for details. [root@localhost ~]# [root@localhost ~]# journalctl -xe Oct 18 12:57:24 localhost.localdomain systemd[1]: Starting Docker Application Container Engine. — Subject: Unit docker.service has begun start-up — Defined-By: systemd — Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel —… Read More »

TURN OFF DISPLAY ERROR IN PHP

Method 1 & 2 & 3 https:///…-standards-error-fix Method 4 error_reporting(0); ini_set(‘display_errors’, ‘0’);     # don’t show any errors… error_reporting(E_ALL | ~E_STRICT);  # …but do log them Few more http:///…-standards-in-joomla https:///…-reporting-explained

Unofficial ‘CNCF Certified Kubernetes Administrator(CKA)’ Exam Curriculum

Scheduling 5% Use label selectors to schedule Pods.   Understand the role of DaemonSets.   Understand how resource limits can affect Pod scheduling.   Understand how to run multiple schedulers and how to configure Pods to use them.   Manually schedule a pod without a scheduler.   Display scheduler events.   Know how to configure… Read More »

Ansible Role Project 1

Step 1 – Create a role which has following specification. Install a webserver httpd # use role/vars/ Add cond…httpd should be done only if RHEL. Copy a index.j2 into /var/www/html # Use Template Copy a httpd.j2 into /etc/httpd/conf/httpd.conf and change the port from 80 to 8080 # Use Template Write a handler for httpd.conf changes… Read More »