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A journey of sys administration

Knowledge Base

Knowledge Base

Knowledge Base
AWS

AWS

AWS Session Manager
AWS Parameter Store Secure String Permissions
Prevent accidental infinite loop in Lambda with API Gateway
API Gateway forward path downstream application

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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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