edmhs / mariadb-ansible

Automated MariaDB setup in AWS with Ansible and Terraform.

MariaDB setup with Ansible

Description

Automated MariaDB setup in AWS with Ansible and Terraform.

MariaDB in single instance mode.

MariaDB in Multi master-to-master replication mode (Galera cluster)

Daily backup script is set up in cron.

Tested with AWS Centos 7 and Digitalocean Centos 7 images.

Requirements

• AWS account
• Ansible installed
• Terraform installed
• Make package installed

File structure

Ansible - Folder with ansible configs, templates and scripts
Ansible/scripts/backup.sh - Mysql database backup script
Terraform - Terraform configuration files
README.MD - Project readme
Makefile - Command shortcuts using Make
INSTALL_NOTES.MD - Manual install notes

Change config before starting

1. AWS access keys in Terraform/terraform.tfvars
2. Edit Ansible/hosts file, enter Server IP addresses
3. Edit Terraform/variable.tf

• AWS region
• Instance type
• SSH key path
• Reserved Elastic IPs

4. Edit Makefile

• Mysql password
• SSH key path
• IP addresses for servers

Setup Infrastructure

# initialize Terraform setup
make prepare

#  Provision infrastructure in AWS, confirm with "yes"
make provision-up

# To delete all servers, confirm with "yes"
make provision-down

Install MariaDB single instance

# install mariadb
make mariadb-install

# check if maridb is running
make mariadb-status

Install MariaDB Galera in HA mode

Multi master to master replication setup.

# At first setup MariaDB on each nodes and stop them
make galera-install

# Start Galera cluster on first node
make galera-start

# Join other nodes to cluster
make galera-join