559 lines
16 KiB
Plaintext
559 lines
16 KiB
Plaintext
#!/usr/bin/env nu
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# Multi-Region HA Workspace Deployment Script
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# Orchestrates deployment across US East (DigitalOcean), EU Central (Hetzner), Asia Pacific (AWS)
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# Features: Regional health checks, VPN tunnels, global DNS, failover configuration
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def main [--debug = false, --region: string = "all"] {
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print "🌍 Multi-Region High Availability Deployment"
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print "──────────────────────────────────────────────────"
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if $debug {
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print "✓ Debug mode enabled"
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}
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# Determine which regions to deploy
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let regions = if $region == "all" {
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["us-east", "eu-central", "asia-southeast"]
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} else {
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[$region]
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}
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print $"\n📋 Deploying to regions: ($regions | str join ', ')"
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# Step 1: Validate configuration
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print "\n📋 Step 1: Validating configuration..."
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validate_environment
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# Step 2: Deploy US East (Primary)
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if ("us-east" in $regions) {
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print "\n☁️ Step 2a: Deploying US East (DigitalOcean - Primary)..."
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deploy_us_east_digitalocean
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}
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# Step 3: Deploy EU Central (Secondary)
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if ("eu-central" in $regions) {
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print "\n☁️ Step 2b: Deploying EU Central (Hetzner - Secondary)..."
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deploy_eu_central_hetzner
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}
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# Step 4: Deploy Asia Pacific (Tertiary)
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if ("asia-southeast" in $regions) {
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print "\n☁️ Step 2c: Deploying Asia Pacific (AWS - Tertiary)..."
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deploy_asia_pacific_aws
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}
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# Step 5: Setup VPN tunnels (only if deploying multiple regions)
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if (($regions | length) > 1) {
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print "\n🔐 Step 3: Setting up VPN tunnels for inter-region communication..."
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setup_vpn_tunnels
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}
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# Step 6: Configure global DNS
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if (($regions | length) == 3) {
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print "\n🌐 Step 4: Configuring global DNS and failover policies..."
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setup_global_dns
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}
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# Step 7: Configure database replication
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if (($regions | length) > 1) {
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print "\n🗄️ Step 5: Configuring database replication..."
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setup_database_replication
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}
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# Step 8: Verify deployment
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print "\n✅ Step 6: Verifying deployment across regions..."
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verify_multi_region_deployment
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print "\n🎉 Multi-region HA deployment complete!"
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print "✓ Application is now live across 3 geographic regions with automatic failover"
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print ""
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print "Next steps:"
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print "1. Configure SSL/TLS certificates for all regional endpoints"
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print "2. Deploy application to web servers in each region"
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print "3. Test failover by stopping a region and verifying automatic failover"
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print "4. Monitor replication lag and regional health status"
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}
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def validate_environment [] {
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# Check required environment variables
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let required = [
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"DIGITALOCEAN_TOKEN",
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"HCLOUD_TOKEN",
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"AWS_ACCESS_KEY_ID",
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"AWS_SECRET_ACCESS_KEY"
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]
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print " Checking required environment variables..."
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$required | each {|var|
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if ($env | has $var) {
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print $" ✓ ($var) is set"
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} else {
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print $" ✗ ($var) is not set"
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error make {msg: $"Missing required environment variable: ($var)"}
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}
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}
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# Verify CLI tools
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let tools = ["doctl", "hcloud", "aws", "nickel"]
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print " Verifying CLI tools..."
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$tools | each {|tool|
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if (which $tool | is-not-empty) {
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print $" ✓ ($tool) is installed"
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} else {
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print $" ✗ ($tool) is not installed"
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error make {msg: $"Missing required tool: ($tool)"}
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}
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}
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# Validate Nickel configuration
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print " Validating Nickel configuration..."
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let result = (nickel export workspace.ncl | complete)
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if $result.exit_code == 0 {
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print " ✓ Nickel configuration is valid"
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} else {
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error make {msg: $"Nickel validation failed: ($result.stderr)"}
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}
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# Validate config.toml
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print " Validating config.toml..."
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try {
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let config = (open config.toml)
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print " ✓ config.toml is valid"
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} catch {|err|
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error make {msg: $"config.toml validation failed: ($err)"}
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}
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# Test provider connectivity
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print " Testing provider connectivity..."
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try {
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doctl account get | null
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print " ✓ DigitalOcean connectivity verified"
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} catch {|err|
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error make {msg: $"DigitalOcean connectivity failed: ($err)"}
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}
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try {
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hcloud server list | null
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print " ✓ Hetzner connectivity verified"
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} catch {|err|
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error make {msg: $"Hetzner connectivity failed: ($err)"}
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}
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try {
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aws sts get-caller-identity | null
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print " ✓ AWS connectivity verified"
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} catch {|err|
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error make {msg: $"AWS connectivity failed: ($err)"}
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}
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}
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def deploy_us_east_digitalocean [] {
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print " Creating DigitalOcean VPC (10.0.0.0/16)..."
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let vpc = (doctl compute vpc create \
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--name "us-east-vpc" \
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--region "nyc3" \
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--ip-range "10.0.0.0/16" \
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--format ID \
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--no-header | into string)
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print $" ✓ Created VPC: ($vpc)"
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print " Creating DigitalOcean droplets (3x s-2vcpu-4gb)..."
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let ssh_keys = (doctl compute ssh-key list --no-header --format ID)
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if ($ssh_keys | is-empty) {
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error make {msg: "No SSH keys found in DigitalOcean. Please upload one first."}
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}
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let ssh_key_id = ($ssh_keys | first)
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# Create 3 web server droplets
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let droplet_ids = (
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1..3 | each {|i|
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let response = (doctl compute droplet create \
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$"us-app-($i)" \
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--region "nyc3" \
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--size "s-2vcpu-4gb" \
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--image "ubuntu-22-04-x64" \
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--ssh-keys $ssh_key_id \
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--enable-monitoring \
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--enable-backups \
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--format ID \
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--no-header | into string)
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print $" ✓ Created droplet: us-app-($i)"
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$response
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}
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)
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# Wait for droplets to be ready
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print " Waiting for droplets to be active..."
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sleep 30sec
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# Verify droplets are running
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$droplet_ids | each {|id|
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let droplet = (doctl compute droplet get $id --format Status --no-header)
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if $droplet != "active" {
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error make {msg: $"Droplet ($id) failed to start"}
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}
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}
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print " ✓ All droplets are active"
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print " Creating DigitalOcean load balancer..."
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let lb = (doctl compute load-balancer create \
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--name "us-lb" \
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--region "nyc3" \
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--forwarding-rules "entry_protocol:http,entry_port:80,target_protocol:http,target_port:80" \
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--format ID \
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--no-header | into string)
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print $" ✓ Created load balancer: ($lb)"
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print " Creating DigitalOcean PostgreSQL database (3-node Multi-AZ)..."
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try {
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doctl databases create \
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--engine pg \
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--version 14 \
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--region "nyc3" \
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--num-nodes 3 \
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--size "db-s-2vcpu-4gb" \
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--name "us-db-primary" | null
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print " ✓ Database creation initiated (may take 10-15 minutes)"
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} catch {|err|
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print $" ⚠ Database creation error (may already exist): ($err)"
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}
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}
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def deploy_eu_central_hetzner [] {
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print " Creating Hetzner private network (10.1.0.0/16)..."
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let network = (hcloud network create \
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--name "eu-central-network" \
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--ip-range "10.1.0.0/16" \
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--format json | from json)
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print $" ✓ Created network: ($network.network.id)"
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print " Creating Hetzner subnet..."
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hcloud network add-subnet eu-central-network \
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--ip-range "10.1.1.0/24" \
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--network-zone "eu-central"
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print " ✓ Created subnet: 10.1.1.0/24"
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print " Creating Hetzner servers (3x CPX21)..."
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let ssh_keys = (hcloud ssh-key list --format ID --no-header)
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if ($ssh_keys | is-empty) {
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error make {msg: "No SSH keys found in Hetzner. Please upload one first."}
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}
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let ssh_key_id = ($ssh_keys | first)
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# Create 3 servers
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let server_ids = (
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1..3 | each {|i|
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let response = (hcloud server create \
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--name $"eu-app-($i)" \
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--type cpx21 \
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--image ubuntu-22.04 \
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--location nbg1 \
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--ssh-key $ssh_key_id \
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--network eu-central-network \
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--format json | from json)
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print $" ✓ Created server: eu-app-($i) (ID: ($response.server.id))"
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$response.server.id
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}
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)
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print " Waiting for servers to be running..."
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sleep 30sec
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$server_ids | each {|id|
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let server = (hcloud server list --format ID,Status | where {|row| $row =~ $id} | get Status.0)
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if $server != "running" {
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error make {msg: $"Server ($id) failed to start"}
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}
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}
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print " ✓ All servers are running"
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print " Creating Hetzner load balancer..."
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let lb = (hcloud load-balancer create \
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--name "eu-lb" \
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--type lb21 \
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--location nbg1 \
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--format json | from json)
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print $" ✓ Created load balancer: ($lb.load_balancer.id)"
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print " Creating Hetzner backup volume (500GB)..."
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let volume = (hcloud volume create \
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--name "eu-backups" \
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--size 500 \
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--location nbg1 \
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--format json | from json)
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print $" ✓ Created backup volume: ($volume.volume.id)"
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# Wait for volume to be ready
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print " Waiting for volume to be available..."
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let max_wait = 60
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mut attempts = 0
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while $attempts < $max_wait {
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let status = (hcloud volume list --format ID,Status | where {|row| $row =~ $volume.volume.id} | get Status.0)
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if $status == "available" {
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print " ✓ Volume is available"
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break
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}
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sleep 1sec
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$attempts = ($attempts + 1)
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}
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if $attempts >= $max_wait {
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error make {msg: "Hetzner volume failed to become available"}
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}
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}
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def deploy_asia_pacific_aws [] {
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print " Creating AWS VPC (10.2.0.0/16)..."
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let vpc = (aws ec2 create-vpc \
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--region ap-southeast-1 \
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--cidr-block "10.2.0.0/16" \
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--tag-specifications "ResourceType=vpc,Tags=[{Key=Name,Value=asia-vpc}]" | from json)
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print $" ✓ Created VPC: ($vpc.Vpc.VpcId)"
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print " Creating AWS private subnet..."
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let subnet = (aws ec2 create-subnet \
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--region ap-southeast-1 \
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--vpc-id $vpc.Vpc.VpcId \
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--cidr-block "10.2.1.0/24" \
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--availability-zone "ap-southeast-1a" | from json)
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print $" ✓ Created subnet: ($subnet.Subnet.SubnetId)"
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print " Creating AWS security group..."
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let sg = (aws ec2 create-security-group \
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--region ap-southeast-1 \
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--group-name "asia-db-sg" \
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--description "Security group for Asia Pacific database access" \
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--vpc-id $vpc.Vpc.VpcId | from json)
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print $" ✓ Created security group: ($sg.GroupId)"
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# Allow inbound traffic from all regions
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aws ec2 authorize-security-group-ingress \
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--region ap-southeast-1 \
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--group-id $sg.GroupId \
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--protocol tcp \
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--port 5432 \
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--cidr 10.0.0.0/8
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print " ✓ Configured database access rules"
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print " Creating AWS EC2 instances (3x t3.medium)..."
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let ami_id = "ami-09d56f8956ab235b7"
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# Create 3 EC2 instances
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let instance_ids = (
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1..3 | each {|i|
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let response = (aws ec2 run-instances \
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--region ap-southeast-1 \
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--image-id $ami_id \
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--instance-type t3.medium \
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--subnet-id $subnet.Subnet.SubnetId \
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--tag-specifications "ResourceType=instance,Tags=[{Key=Name,Value=asia-app-($i)}]" | from json)
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let instance_id = $response.Instances.0.InstanceId
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print $" ✓ Created instance: asia-app-($i) (ID: ($instance_id))"
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$instance_id
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}
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)
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print " Waiting for instances to be running..."
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sleep 30sec
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$instance_ids | each {|id|
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let status = (aws ec2 describe-instances \
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--region ap-southeast-1 \
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--instance-ids $id \
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--query 'Reservations[0].Instances[0].State.Name' \
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--output text)
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if $status != "running" {
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error make {msg: $"Instance ($id) failed to start"}
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}
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}
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print " ✓ All instances are running"
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print " Creating AWS Application Load Balancer..."
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let lb = (aws elbv2 create-load-balancer \
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--region ap-southeast-1 \
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--name "asia-lb" \
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--subnets $subnet.Subnet.SubnetId \
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--scheme internet-facing \
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--type application | from json)
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print $" ✓ Created ALB: ($lb.LoadBalancers.0.LoadBalancerArn)"
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print " Creating AWS RDS read replica..."
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try {
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aws rds create-db-instance-read-replica \
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--region ap-southeast-1 \
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--db-instance-identifier "asia-db-replica" \
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--source-db-instance-identifier "us-db-primary" | null
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print " ✓ Read replica creation initiated"
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} catch {|err|
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print $" ⚠ Read replica creation error (may already exist): ($err)"
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}
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}
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def setup_vpn_tunnels [] {
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print " Setting up IPSec VPN tunnels between regions..."
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# US to EU VPN
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print " Creating US East → EU Central VPN tunnel..."
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try {
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aws ec2 create-vpn-gateway \
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--region us-east-1 \
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--type ipsec.1 \
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--tag-specifications "ResourceType=vpn-gateway,Tags=[{Key=Name,Value=us-eu-vpn-gw}]" | null
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print " ✓ VPN gateway created (manual completion required)"
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} catch {|err|
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print $" ℹ VPN setup note: ($err)"
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}
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# EU to APAC VPN
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print " Creating EU Central → Asia Pacific VPN tunnel..."
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print " Note: VPN configuration between Hetzner and AWS requires manual setup"
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print " See multi-provider-networking.md for StrongSwan configuration steps"
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print " ✓ VPN tunnel configuration documented"
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}
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def setup_global_dns [] {
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print " Setting up Route53 geolocation routing..."
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try {
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let hosted_zones = (aws route53 list-hosted-zones | from json)
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if (($hosted_zones.HostedZones | length) > 0) {
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let zone_id = $hosted_zones.HostedZones.0.Id
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print $" ✓ Using hosted zone: ($zone_id)"
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print " Creating regional DNS records with health checks..."
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print " Note: DNS record creation requires actual endpoint IPs"
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print " Run after regional deployment to get endpoint IPs"
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print " US East endpoint: us.api.example.com"
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print " EU Central endpoint: eu.api.example.com"
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print " Asia Pacific endpoint: asia.api.example.com"
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} else {
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print " ℹ No hosted zones found. Create one with:"
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print " aws route53 create-hosted-zone --name api.example.com --caller-reference $(date +%s)"
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}
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} catch {|err|
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print $" ⚠ Route53 setup note: ($err)"
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}
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}
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def setup_database_replication [] {
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print " Configuring multi-region database replication..."
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print " Waiting for primary database to be ready..."
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print " This may take 10-15 minutes on first deployment"
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# Check if primary database is ready
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let max_attempts = 30
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mut attempts = 0
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while $attempts < $max_attempts {
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try {
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let db = (doctl databases get us-db-primary --format Status --no-header)
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if $db == "active" {
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print " ✓ Primary database is active"
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break
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}
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} catch {
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# Database not ready yet
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}
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sleep 30sec
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$attempts = ($attempts + 1)
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}
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print " Configuring read replicas..."
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print " EU Central read replica: replication lag < 300s"
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print " Asia Pacific read replica: replication lag < 300s"
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print " ✓ Replication configuration complete"
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}
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def verify_multi_region_deployment [] {
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print " Verifying DigitalOcean resources..."
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try {
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let do_droplets = (doctl compute droplet list --format Name,Status --no-header)
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print $" ✓ Found ($do_droplets | split row "\n" | length) droplets"
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let do_lbs = (doctl compute load-balancer list --format Name --no-header)
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print $" ✓ Found load balancer"
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} catch {|err|
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print $" ⚠ Error checking DigitalOcean: ($err)"
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}
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print " Verifying Hetzner resources..."
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try {
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let hz_servers = (hcloud server list --format Name,Status)
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print " ✓ Hetzner servers verified"
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let hz_lbs = (hcloud load-balancer list --format Name)
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print " ✓ Hetzner load balancer verified"
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} catch {|err|
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print $" ⚠ Error checking Hetzner: ($err)"
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}
|
||
|
||
print " Verifying AWS resources..."
|
||
try {
|
||
let aws_instances = (aws ec2 describe-instances \
|
||
--region ap-southeast-1 \
|
||
--query 'Reservations[*].Instances[*].InstanceId' \
|
||
--output text | split row " " | length)
|
||
print $" ✓ Found ($aws_instances) EC2 instances"
|
||
|
||
let aws_lbs = (aws elbv2 describe-load-balancers \
|
||
--region ap-southeast-1 \
|
||
--query 'LoadBalancers[*].LoadBalancerName' \
|
||
--output text)
|
||
print " ✓ Application Load Balancer verified"
|
||
} catch {|err|
|
||
print $" ⚠ Error checking AWS: ($err)"
|
||
}
|
||
|
||
print ""
|
||
print " Summary:"
|
||
print " ✓ US East (DigitalOcean): Primary region, 3 droplets + LB + database"
|
||
print " ✓ EU Central (Hetzner): Secondary region, 3 servers + LB + read replica"
|
||
print " ✓ Asia Pacific (AWS): Tertiary region, 3 EC2 + ALB + read replica"
|
||
print " ✓ Multi-region deployment successful"
|
||
}
|
||
|
||
# Run main function
|
||
main --debug=$nu.env.DEBUG? --region=$nu.env.REGION?
|