wip

examples/scripts/kubernetes/clusters/postgres.rs

@@ -0,0 +1,112 @@
+//! PostgreSQL Cluster Deployment Example
+//!
+//! This example shows how to deploy a PostgreSQL cluster using the
+//! KubernetesManager convenience methods.
+
+use sal_kubernetes::KubernetesManager;
+use std::collections::HashMap;
+
+#[tokio::main]
+async fn main() -> Result<(), Box<dyn std::error::Error>> {
+    // Create Kubernetes manager for the database namespace
+    let km = KubernetesManager::new("database").await?;
+
+    // Create the namespace if it doesn't exist
+    println!("Creating namespace 'database' if it doesn't exist...");
+    match km.namespace_create("database").await {
+        Ok(_) => println!("✓ Namespace 'database' created"),
+        Err(e) => {
+            if e.to_string().contains("already exists") {
+                println!("✓ Namespace 'database' already exists");
+            } else {
+                return Err(e.into());
+            }
+        }
+    }
+
+    // Clean up any existing resources first
+    println!("Cleaning up any existing PostgreSQL resources...");
+    match km.deployment_delete("postgres-cluster").await {
+        Ok(_) => println!("✓ Deleted existing deployment"),
+        Err(_) => println!("✓ No existing deployment to delete"),
+    }
+
+    match km.service_delete("postgres-cluster").await {
+        Ok(_) => println!("✓ Deleted existing service"),
+        Err(_) => println!("✓ No existing service to delete"),
+    }
+
+    // Configure PostgreSQL-specific labels
+    let mut labels = HashMap::new();
+    labels.insert("app".to_string(), "postgres-cluster".to_string());
+    labels.insert("type".to_string(), "database".to_string());
+    labels.insert("engine".to_string(), "postgresql".to_string());
+
+    // Configure PostgreSQL environment variables
+    let mut env_vars = HashMap::new();
+    env_vars.insert("POSTGRES_DB".to_string(), "myapp".to_string());
+    env_vars.insert("POSTGRES_USER".to_string(), "postgres".to_string());
+    env_vars.insert(
+        "POSTGRES_PASSWORD".to_string(),
+        "secretpassword".to_string(),
+    );
+    env_vars.insert(
+        "PGDATA".to_string(),
+        "/var/lib/postgresql/data/pgdata".to_string(),
+    );
+
+    // Deploy the PostgreSQL cluster using the convenience method
+    println!("Deploying PostgreSQL cluster...");
+    km.deploy_application(
+        "postgres-cluster", // name
+        "postgres:15",      // image
+        2,                  // replicas (1 master + 1 replica)
+        5432,               // port
+        Some(labels),       // labels
+        Some(env_vars),     // environment variables
+    )
+    .await?;
+
+    println!("✅ PostgreSQL cluster deployed successfully!");
+
+    // Check deployment status
+    let deployments = km.deployments_list().await?;
+    let postgres_deployment = deployments
+        .iter()
+        .find(|d| d.metadata.name.as_ref() == Some(&"postgres-cluster".to_string()));
+
+    if let Some(deployment) = postgres_deployment {
+        let total_replicas = deployment
+            .spec
+            .as_ref()
+            .and_then(|s| s.replicas)
+            .unwrap_or(0);
+        let ready_replicas = deployment
+            .status
+            .as_ref()
+            .and_then(|s| s.ready_replicas)
+            .unwrap_or(0);
+
+        println!(
+            "Deployment status: {}/{} replicas ready",
+            ready_replicas, total_replicas
+        );
+    }
+
+    println!("\n📋 Connection Information:");
+    println!("  Host: postgres-cluster.database.svc.cluster.local");
+    println!("  Port: 5432");
+    println!("  Database: postgres (default)");
+    println!("  Username: postgres (default)");
+    println!("  Password: Set POSTGRES_PASSWORD environment variable");
+
+    println!("\n🔧 To connect from another pod:");
+    println!("  psql -h postgres-cluster.database.svc.cluster.local -U postgres");
+
+    println!("\n💡 Next steps:");
+    println!("  • Set environment variables for database credentials");
+    println!("  • Add persistent volume claims for data storage");
+    println!("  • Configure backup and monitoring");
+
+    Ok(())
+}