[Epic] Percona Server Puppet Integration

[akuzminsky]

Overview

Puppet-based configuration management for Percona Server and Orchestrator.

Related Terraform Module: infrahouse/terraform-aws-percona-server
Migrated from infrahouse/terraform-aws-percona-server#7

Components

• Custom facts for cluster_id, dynamodb_table, s3_bucket
• NLB target group registration logic
• Percona Server configuration management
• Orchestrator configuration management

Puppet Responsibilities

1. Custom Facts

   • cluster_id - Cluster identifier from instance tags
   • dynamodb_table - DynamoDB table name for locks/topology
   • s3_bucket - S3 bucket for backups/binlogs

2. Initial Provisioning

   • Install Percona Server
   • Install Orchestrator
   • Configure based on role (master/replica)
   • Register with appropriate NLB target group

3. Target Group Registration

   • Master -> Write TG
   • Replica -> Read TG

Target Group Registration Events

Event	Who Handles	Action
Initial master boot	Puppet	Register to write TG
Initial replica boot	Puppet	Register to read TG
Replica dies (replacement)	Puppet on new instance	Register to read TG

Acceptance Criteria

• Custom facts populated correctly
• Percona Server configured via Puppet
• Orchestrator configured via Puppet
• NLB registration automated
• Configuration idempotent