6b12001ca2
- Add Kubernetes examples demonstrating deployment of various applications (PostgreSQL, Redis, generic). This improves the documentation and provides practical usage examples. - Add `tokio` dependency for async examples. This enables the use of asynchronous operations in the examples. - Add `once_cell` dependency for improved resource management in Kubernetes module. This allows efficient management of singletons and other resources.
80 lines
2.5 KiB
Plaintext
80 lines
2.5 KiB
Plaintext
//! PostgreSQL Cluster Deployment Example (Rhai)
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//!
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//! This script shows how to deploy a PostgreSQL cluster using Rhai scripting
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//! with the KubernetesManager convenience methods.
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print("=== PostgreSQL Cluster Deployment ===");
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// Create Kubernetes manager for the database namespace
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print("Creating Kubernetes manager for 'database' namespace...");
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let km = kubernetes_manager_new("database");
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print("✓ Kubernetes manager created");
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// Create the namespace if it doesn't exist
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print("Creating namespace 'database' if it doesn't exist...");
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try {
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create_namespace(km, "database");
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print("✓ Namespace 'database' created");
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} catch(e) {
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if e.to_string().contains("already exists") {
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print("✓ Namespace 'database' already exists");
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} else {
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print("⚠️ Warning: " + e);
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}
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}
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// Clean up any existing resources first
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print("\nCleaning up any existing PostgreSQL resources...");
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try {
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delete_deployment(km, "postgres-cluster");
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print("✓ Deleted existing deployment");
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} catch(e) {
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print("✓ No existing deployment to delete");
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}
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try {
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delete_service(km, "postgres-cluster");
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print("✓ Deleted existing service");
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} catch(e) {
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print("✓ No existing service to delete");
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}
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// Create PostgreSQL cluster using the convenience method
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print("\nDeploying PostgreSQL cluster...");
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try {
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// Deploy PostgreSQL using the convenience method
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let result = deploy_application(km, "postgres-cluster", "postgres:15", 2, 5432, #{
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"app": "postgres-cluster",
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"type": "database",
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"engine": "postgresql"
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}, #{
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"POSTGRES_DB": "myapp",
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"POSTGRES_USER": "postgres",
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"POSTGRES_PASSWORD": "secretpassword",
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"PGDATA": "/var/lib/postgresql/data/pgdata"
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});
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print("✓ " + result);
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print("\n✅ PostgreSQL cluster deployed successfully!");
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print("\n📋 Connection Information:");
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print(" Host: postgres-cluster.database.svc.cluster.local");
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print(" Port: 5432");
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print(" Database: postgres (default)");
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print(" Username: postgres (default)");
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print("\n🔧 To connect from another pod:");
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print(" psql -h postgres-cluster.database.svc.cluster.local -U postgres");
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print("\n💡 Next steps:");
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print(" • Set POSTGRES_PASSWORD environment variable");
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print(" • Configure persistent storage");
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print(" • Set up backup and monitoring");
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} catch(e) {
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print("❌ Failed to deploy PostgreSQL cluster: " + e);
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}
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print("\n=== Deployment Complete ===");
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