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A journey of sys administration

Knowledge Base

Knowledge Base

Knowledge Base
Ansible

Ansible

How to bootsrap Docker with Ansible
How to use Ansible to install and configure native Apache
Ansible Dynamic Inventory
Ansible Conditional Checks

Ansible
AWS
AWS - CloudFormation
AWS - CloudWatch
- Installing CloudWatch Agent
Bash
- Check if variable is empty
CircleCI
Database
- Database - MongoDB
  - Create DB for MongoDB container on startup
  - MongoDB - The importance of indexing
- Database - MySQL
  - How to backup MySQL / MariaDB
- Database - PostreSQL
Docker
Git
Grafana
- Grafana Email Notification
Golang
- Inject Build-time vars with Golang
Installation
Jenkins
- Create Jenkins job to deploy files - Publish over SSH
- Jenkins Useful Plugins
Linux
- Linux - Date & Time
  - How to check if date time is synced to NTP
  - How to Fix Time Not Synchronized on Ubuntu Server
- Linux - CLI
- Linux - Filesystem
- Linux - Firewall
  - How to block outgoing connections on Centos / RHEL
  - Firewalld guide
- Linux - Log Management
  - How to manage log files using logrotate
- Linux - Network
  - How to find listening ports
  - How to set Static IP address (Centos / RHEL)
- Linux - Security / Authentication & Authorization
- Linux - SMTP
  - Postfix bounce unknown user
NodeJS
Misc - Wordpress
Python
SSH
SSL
- How to generate certificate - signed by Root CA
- How to create a private Root CA
Vagrant
- Cloning private repos in Vagrant
YAML
- Break string in YAML over multiple lines

Tags

acl backup centos chrony date disk dnf docker docker-compose filesystem firewall firewalld installation linux logrotate logs lvm mysql network ntp permission rhel security services space sudoers systemd time vmware volume yum zabbix

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