Docker

Auto Remediation with Zabbix Monitor and Ansible IT Automation

By Mike Goh April 9, 2024Developers Technical TutorialsAutomation Tools, DockerNo Comments

Introduction Automated remediation aims to reduce the recovery time objective (RTO), which is the maximum acceptable time that an application, network, or system can be down after an unexpected failure takes place. Ansible is one of the most popular DevOps…

DevOps Tools – Troubleshooting Guide

By Mike Goh March 28, 2022Developers Technical TutorialsDevOps, DockerNo Comments

Last updated 22 Jan 2024 Topic Jenkins, From Zero To Hero Become a DevOps Jenkins Master Sourcejenkins/centos7/DockerfileErrorStep 2/7 : RUN yum -y install openssh-server---> Running in 7e18f84a2754CentOS Linux 8 - AppStream 391 B/s | 38 B 00:00Error: Failed to download…

Build and Run Test from Jenkins with Docker

By Mike Goh September 1, 2020Developers Technical TutorialsDevOps, DockerNo Comments

Introduction My DevOps learning roadmap says "learn some CI/CD tool" and so I picked up Jenkins - an open source continuous integration and continuous delivery automation server. Although I am already using GitLab to keep track and backup my source…

Using Docker Swarm Container Orchestration to Manage Multiple Containers

By Mike Goh July 25, 2020Developers Technical TutorialsDevOps, DockerNo Comments

Introduction Previously, I had mastered the basics of Ansible as infrastructure configuration management tool as part of my self-learning DevOps journey. Today, I had to understand and try out what is a container orchestration tool. I started with Kubernetes as…

Bash Script to Sync WordPress Docker Production to Demo

By Mike Goh June 6, 2020Developers Technical TutorialsCommand Line, DockerNo Comments

Introduction After we had upgraded a website from development to production status, we will need to put up a maintenance notice if we are required to make further changes. It is unpleasant to let visitors see the down-time or on-going…

Host Multiple Websites with jwilder nginx-proxy and letsencrypt-companion

By Mike Goh May 8, 2020Developers Technical TutorialsDocker, Web1 Comment

Introduction Two years ago, in 2018, I was introduced to Docker by a colleague of mine who was a brilliant programmer. Thus, I started my Docker journey on my own by reading tutorials online. I was developing a WordPress website…

How to Merge Server-side and Docker iptables Firewall Rules

By Mike Goh April 30, 2020Developers Technical TutorialsDocker, SecurityNo Comments

Introduction Docker is widely used to place applications in containers. One of the reasons why Docker is so popular is because of security thanks to its isolation capabilities. For example, it allows you to isolate applications from each other. Installing…

Auto Remediation with Zabbix Monitor and Ansible IT Automation

DevOps Tools – Troubleshooting Guide

Build and Run Test from Jenkins with Docker

Using Docker Swarm Container Orchestration to Manage Multiple Containers

Bash Script to Sync WordPress Docker Production to Demo

Host Multiple Websites with jwilder nginx-proxy and letsencrypt-companion

How to Merge Server-side and Docker iptables Firewall Rules

How to Backup WordPress Database and Directory Docker Containers

Change Domain for WordPress Docker Container with phpMyAdmin

How to Make ‘docker-compose’ Short and Quick Using Aliases

Asus Router Setup – Wifi Settings

How to Resolve iptables: No chain/target/match by that name

Create Helpdesk Ticketing System with Google Apps Script

Host Multiple Websites with jwilder nginx-proxy and letsencrypt-companion