关于“通过内部负载均衡提高应用可靠性和可伸缩性”的评价

i created the instance template but check progress was not showing: Basic information Name instance-template-1 Type Instance Template Creation time Jun 23, 2026, 8:58:48 PM UTC+05:30 In use by instance-group-1 Location global Reservations Automatically choose (default) Labels None Tags Placement policy No policy Confidential VM service Disabled Machine configuration Machine type e2-micro Minimum CPU platform None Architecture — vCPUs to core ratio — Custom visible cores — All-core turbo-only mode — Display device Disabled GPUs None Networking Public DNS PTR Record None Total egress bandwidth tier — Firewalls HTTP traffic Off HTTPS traffic Off Allow Load Balancer Health Checks Off Network tags lb-backend Network interfaces Filter Name Network Subnetwork NIC type Primary internal IP address Alias IP ranges IP stack type External IP address Network tier IP forwarding nic0 my-internal-app subnet-a IPv4 None - Off Storage Boot disk Name Image Interface type Size (GB) Device name Type Architecture Encryption Mode When deleting instance Confidential computing services Autogenerated debian-11 — 10 persistent-disk-0 Standard persistent disk — Google-managed Boot, read/write Delete disk Disabled New disks None Existing disks None Local disks None Security and access Shielded VM Secure Boot Off vTPM Off Integrity Monitoring Off SSH settings SSH keys None Block project-wide SSH keys Off API and identity management Service account default Cloud API access scopes Allow full access to all Cloud APIs Management Availability policies VM provisioning model Standard Max duration None Preemptibility Off (Recommended) On VM termination — Graceful shutdown maximum duration — On host maintenance Migrate VM instance (Recommended) Host error timeout — Automatic restart On (Recommended) Customer Managed Encryption Key (CMEK) revocation policy Do nothing Custom metadata Key Value startup-script #!/bin/bash apt-get update apt-get install -y apache2 php libapache2-mod-php cat <<'EOF' > /var/www/html/index.php <h1>Internal Load Balancing Lab</h1> <h2>Client IP</h2> Your IP address : <?php echo $_SERVER['REMOTE_ADDR']; ?> <h2>Hostname</h2> Server Hostname: <?php echo gethostname(); ?> <h2>Server Location</h2> Region and Zone: <?php $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, "http://metadata.google.internal/computeMetadata/v1/instance/zone"); curl_setopt($ch, CURLOPT_HTTPHEADER, array('Metadata-Flavor: Google')); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); $zone = curl_exec($ch); $parts = explode('/', $zone); echo end($parts); ?> EOF rm -f /var/www/html/index.html systemctl restart apache2 this was created

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