Fix database connection issues by using standard PostgreSQL environment variables

start.sh

@@ -688,6 +688,23 @@ export GOCACHE="/app/data/go/cache"
 export GO111MODULE=on
 export GOFLAGS="-modfile=/app/data/go/go.mod -mod=mod"
 
+# Standard PostgreSQL environment variables (critical for Go's database/sql driver)
+export PGHOST="${CLOUDRON_POSTGRESQL_HOST}"
+export PGPORT="${CLOUDRON_POSTGRESQL_PORT}"
+export PGUSER="${CLOUDRON_POSTGRESQL_USERNAME}"
+export PGPASSWORD="${CLOUDRON_POSTGRESQL_PASSWORD}"
+export PGDATABASE="${CLOUDRON_POSTGRESQL_DATABASE}"
+export PGSSLMODE="disable"
+
+# Try to modify hosts file to block localhost PostgreSQL connections (may not work in containers)
+if [ -w /etc/hosts ]; then
+    echo "==> Adding entry to /etc/hosts to redirect localhost PostgreSQL"
+    echo "127.0.0.1 postgres-unavailable # Added by Ente startup script" >> /etc/hosts
+    echo "::1 postgres-unavailable # Added by Ente startup script" >> /etc/hosts
+else
+    echo "==> Cannot modify /etc/hosts (read-only filesystem)"
+fi
+
 # Fix database migration state if needed
 echo "==> Checking database migration state"
 if [ -d "$SERVER_DIR/cmd/museum" ]; then
@@ -700,7 +717,20 @@ if [ -d "$SERVER_DIR/cmd/museum" ]; then
     # Execute as the cloudron user but use a proper script instead of env cd
     cat > /tmp/run_migration.sh <<EOF
 #!/bin/bash
-cd "$SERVER_DIR" && ENTE_PG_HOST="${MUSEUM_DB_HOST}" ENTE_PG_PORT="${MUSEUM_DB_PORT}" ENTE_PG_USER="${MUSEUM_DB_USER}" ENTE_PG_PASSWORD="${MUSEUM_DB_PASSWORD}" ENTE_PG_DATABASE="${MUSEUM_DB_NAME}" ENTE_PG_DSN="postgres://${MUSEUM_DB_USER}:${MUSEUM_DB_PASSWORD}@${MUSEUM_DB_HOST}:${MUSEUM_DB_PORT}/${MUSEUM_DB_NAME}?sslmode=disable" go run cmd/museum/main.go db force 25
+cd "$SERVER_DIR" && \
+PGHOST="${CLOUDRON_POSTGRESQL_HOST}" \
+PGPORT="${CLOUDRON_POSTGRESQL_PORT}" \
+PGUSER="${CLOUDRON_POSTGRESQL_USERNAME}" \
+PGPASSWORD="${CLOUDRON_POSTGRESQL_PASSWORD}" \
+PGDATABASE="${CLOUDRON_POSTGRESQL_DATABASE}" \
+PGSSLMODE="disable" \
+ENTE_PG_HOST="${MUSEUM_DB_HOST}" \
+ENTE_PG_PORT="${MUSEUM_DB_PORT}" \
+ENTE_PG_USER="${MUSEUM_DB_USER}" \
+ENTE_PG_PASSWORD="${MUSEUM_DB_PASSWORD}" \
+ENTE_PG_DATABASE="${MUSEUM_DB_NAME}" \
+ENTE_PG_DSN="postgres://${MUSEUM_DB_USER}:${MUSEUM_DB_PASSWORD}@${MUSEUM_DB_HOST}:${MUSEUM_DB_PORT}/${MUSEUM_DB_NAME}?sslmode=disable" \
+go run cmd/museum/main.go db force 25
 EOF
     chmod +x /tmp/run_migration.sh
     
@@ -739,7 +769,20 @@ elif [ -d "$SERVER_DIR/cmd/museum" ]; then
     # Create a startup script
     cat > /tmp/run_server.sh <<EOF
 #!/bin/bash
-cd "$SERVER_DIR" && ENTE_PG_HOST="${MUSEUM_DB_HOST}" ENTE_PG_PORT="${MUSEUM_DB_PORT}" ENTE_PG_USER="${MUSEUM_DB_USER}" ENTE_PG_PASSWORD="${MUSEUM_DB_PASSWORD}" ENTE_PG_DATABASE="${MUSEUM_DB_NAME}" ENTE_PG_DSN="postgres://${MUSEUM_DB_USER}:${MUSEUM_DB_PASSWORD}@${MUSEUM_DB_HOST}:${MUSEUM_DB_PORT}/${MUSEUM_DB_NAME}?sslmode=disable" go run cmd/museum/main.go serve
+cd "$SERVER_DIR" && \
+PGHOST="${CLOUDRON_POSTGRESQL_HOST}" \
+PGPORT="${CLOUDRON_POSTGRESQL_PORT}" \
+PGUSER="${CLOUDRON_POSTGRESQL_USERNAME}" \
+PGPASSWORD="${CLOUDRON_POSTGRESQL_PASSWORD}" \
+PGDATABASE="${CLOUDRON_POSTGRESQL_DATABASE}" \
+PGSSLMODE="disable" \
+ENTE_PG_HOST="${MUSEUM_DB_HOST}" \
+ENTE_PG_PORT="${MUSEUM_DB_PORT}" \
+ENTE_PG_USER="${MUSEUM_DB_USER}" \
+ENTE_PG_PASSWORD="${MUSEUM_DB_PASSWORD}" \
+ENTE_PG_DATABASE="${MUSEUM_DB_NAME}" \
+ENTE_PG_DSN="postgres://${MUSEUM_DB_USER}:${MUSEUM_DB_PASSWORD}@${MUSEUM_DB_HOST}:${MUSEUM_DB_PORT}/${MUSEUM_DB_NAME}?sslmode=disable" \
+go run cmd/museum/main.go serve
 EOF
     chmod +x /tmp/run_server.sh
     
@@ -755,6 +798,17 @@ EOF
         MUSEUM_DB_PASSWORD="$MUSEUM_DB_PASSWORD" \
         MUSEUM_DB_NAME="$MUSEUM_DB_NAME" \
         ENTE_PG_DSN="postgres://${MUSEUM_DB_USER}:${MUSEUM_DB_PASSWORD}@${MUSEUM_DB_HOST}:${MUSEUM_DB_PORT}/${MUSEUM_DB_NAME}?sslmode=disable" \
+        ENTE_PG_HOST="$MUSEUM_DB_HOST" \
+        ENTE_PG_PORT="$MUSEUM_DB_PORT" \
+        ENTE_PG_USER="$MUSEUM_DB_USER" \
+        ENTE_PG_PASSWORD="$MUSEUM_DB_PASSWORD" \
+        ENTE_PG_DATABASE="$MUSEUM_DB_NAME" \
+        PGHOST="$PGHOST" \
+        PGPORT="$PGPORT" \
+        PGUSER="$PGUSER" \
+        PGPASSWORD="$PGPASSWORD" \
+        PGDATABASE="$PGDATABASE" \
+        PGSSLMODE="$PGSSLMODE" \
         ENTE_LOG_LEVEL=debug \
         bash /tmp/run_server.sh > /app/data/logs/museum.log 2>&1 &
     SERVER_PID=$!
@@ -783,6 +837,11 @@ func main() {
     log.Println("MUSEUM_DB_USER:", os.Getenv("MUSEUM_DB_USER"))
     log.Println("ENTE_PG_HOST:", os.Getenv("ENTE_PG_HOST"))
     log.Println("ENTE_PG_DSN:", os.Getenv("ENTE_PG_DSN"))
+    log.Println("PGHOST:", os.Getenv("PGHOST"))
+    log.Println("PGPORT:", os.Getenv("PGPORT"))
+    log.Println("PGUSER:", os.Getenv("PGUSER"))
+    log.Println("PGDATABASE:", os.Getenv("PGDATABASE"))
+    log.Println("PGSSLMODE:", os.Getenv("PGSSLMODE"))
     
     // Add a health endpoint
     http.HandleFunc("/health", func(w http.ResponseWriter, r *http.Request) {
@@ -816,6 +875,14 @@ EOT
     export ENTE_PG_DATABASE="${MUSEUM_DB_NAME}"
     export ENTE_PG_DSN="postgres://${MUSEUM_DB_USER}:${MUSEUM_DB_PASSWORD}@${MUSEUM_DB_HOST}:${MUSEUM_DB_PORT}/${MUSEUM_DB_NAME}?sslmode=disable"
     
+    # Make sure we pass the standard PostgreSQL environment variables too
+    export PGHOST="${CLOUDRON_POSTGRESQL_HOST}"
+    export PGPORT="${CLOUDRON_POSTGRESQL_PORT}"
+    export PGUSER="${CLOUDRON_POSTGRESQL_USERNAME}"
+    export PGPASSWORD="${CLOUDRON_POSTGRESQL_PASSWORD}"
+    export PGDATABASE="${CLOUDRON_POSTGRESQL_DATABASE}"
+    export PGSSLMODE="disable"
+    
     go run main.go > /app/data/logs/museum.log 2>&1 &
     SERVER_PID=$!