calypso/docs/healthcheck-script.md

Calypso Appliance Health Check Script

Overview

Comprehensive health check script for all Calypso Appliance components. Performs automated checks across system resources, services, network, storage, and backup infrastructure.

Installation

Script location: /usr/local/bin/calypso-healthcheck

Usage

Basic Usage

# Run health check (requires root)
calypso-healthcheck

# Run and save to specific location
calypso-healthcheck 2>&1 | tee /root/healthcheck-$(date +%Y%m%d).log

Exit Codes

• 0 - All checks passed (100% healthy)
• 1 - Healthy with warnings (some non-critical issues)
• 2 - Degraded (80%+ checks passed, some failures)
• 3 - Critical (less than 80% checks passed)

Automated Checks

System Resources (4 checks)

• Root filesystem usage (threshold: 80%)
• /var filesystem usage (threshold: 80%)
• Memory usage (threshold: 90%)
• CPU load average

Database Services (2 checks)

• PostgreSQL service status
• Database presence (calypso, bacula)

Calypso Application (7 checks)

• calypso-api service
• calypso-frontend service
• calypso-logger service
• API port 8443
• Frontend port 3000
• API health endpoint
• Frontend health endpoint

Backup Services - Bacula (8 checks)

• bacula-director service
• bacula-fd service
• bacula-sd service
• Director bconsole connectivity
• Storage (Scalar-i500) accessibility
• Director port 9101
• FD port 9102
• SD port 9103

Virtual Tape Library - mhVTL (4 checks)

• mhvtl.target status
• vtllibrary@10 (Scalar i500)
• vtllibrary@30 (Scalar i40)
• VTL device count (2 changers, 8 tape drives)
• Scalar i500 slots detection

Storage Protocols (9 checks)

• NFS server service
• Samba (smbd) service
• NetBIOS (nmbd) service
• SCST service
• iSCSI target service
• NFS port 2049
• SMB port 445
• NetBIOS port 139
• iSCSI port 3260

Monitoring & Management (2 checks)

• SNMP daemon
• SNMP port 161

Network Connectivity (2 checks)

• Internet connectivity (ping 8.8.8.8)
• Network manager status

Total: 39+ automated checks

Output Format

Console Output

• Color-coded status indicators:
  • ✓ Green = Passed
  • ⚠ Yellow = Warning
  • ✗ Red = Failed

Example Output

==========================================
  CALYPSO APPLIANCE HEALTH CHECK
==========================================
Date: 2025-12-31 01:46:27
Hostname: calypso
Uptime: up 6 days, 2 hours, 50 minutes
Log file: /var/log/calypso-healthcheck-20251231-014627.log

========================================
SYSTEM RESOURCES
========================================
✓ Root filesystem (18% used)
✓ Var filesystem (18% used)
✓ Memory usage (49% used, 8206MB available)
✓ CPU load average (2.18, 8 cores)

...

========================================
HEALTH CHECK SUMMARY
========================================

Total Checks:    39
Passed:          35
Warnings:        0
Failed:          4

⚠ OVERALL STATUS: DEGRADED (89%)

Log Files

All checks are logged to: /var/log/calypso-healthcheck-YYYYMMDD-HHMMSS.log

Logs include:

• Timestamp and system information
• Detailed check results
• Summary statistics
• Overall health status

Scheduling

Manual Execution

# Run on demand
sudo calypso-healthcheck

Cron Job (Recommended)

Add to crontab for automated checks:

# Daily health check at 2 AM
0 2 * * * /usr/local/bin/calypso-healthcheck > /dev/null 2>&1

# Weekly health check on Monday at 6 AM with email notification
0 6 * * 1 /usr/local/bin/calypso-healthcheck 2>&1 | mail -s "Calypso Health Check" admin@example.com

Systemd Timer (Alternative)

Create /etc/systemd/system/calypso-healthcheck.timer:

[Unit]
Description=Daily Calypso Health Check
Requires=calypso-healthcheck.service

[Timer]
OnCalendar=daily
Persistent=true

[Install]
WantedBy=timers.target

Create /etc/systemd/system/calypso-healthcheck.service:

[Unit]
Description=Calypso Appliance Health Check

[Service]
Type=oneshot
ExecStart=/usr/local/bin/calypso-healthcheck

Enable:

systemctl enable --now calypso-healthcheck.timer

Troubleshooting

Common Failures

API/Frontend Health Endpoints Failing

# Check if services are running
systemctl status calypso-api calypso-frontend

# Check service logs
journalctl -u calypso-api -n 50
journalctl -u calypso-frontend -n 50

# Test manually
curl -k https://localhost:8443/health
curl -k https://localhost:3000/health

Bacula Director Not Responding

# Check service
systemctl status bacula-director

# Test bconsole
echo "status director" | bconsole

# Check logs
tail -50 /var/log/bacula/bacula.log

VTL Slots Not Detected

# Check VTL services
systemctl status mhvtl.target

# Check devices
lsscsi | grep -E "mediumx|tape"

# Test manually
mtx -f /dev/sg7 status
echo "update slots storage=Scalar-i500" | bconsole

Storage Protocols Port Not Listening

# Check service status
systemctl status nfs-server smbd nmbd scst iscsi-scstd

# Check listening ports
ss -tuln | grep -E "2049|445|139|3260"

# Restart services if needed
systemctl restart nfs-server
systemctl restart smbd nmbd

Customization

Modify Thresholds

Edit /usr/local/bin/calypso-healthcheck:

# Disk usage threshold (default: 80%)
check_disk "/" 80 "Root filesystem"

# Memory usage threshold (default: 90%)
if [ "$mem_percent" -lt 90 ]; then

# Change expected VTL devices
if [ "$changer_count" -ge 2 ] && [ "$tape_count" -ge 8 ]; then

Add Custom Checks

Add new check functions:

check_custom() {
    TOTAL_CHECKS=$((TOTAL_CHECKS + 1))
    
    if [[ condition ]]; then
        echo -e "${GREEN}${CHECK}${NC} Custom check passed" | tee -a "$LOG_FILE"
        PASSED_CHECKS=$((PASSED_CHECKS + 1))
    else
        echo -e "${RED}${CROSS}${NC} Custom check failed" | tee -a "$LOG_FILE"
        FAILED_CHECKS=$((FAILED_CHECKS + 1))
    fi
}

# Call in main script
check_custom

Integration

Monitoring Systems

Export metrics for monitoring:

# Nagios/Icinga format
calypso-healthcheck
if [ $? -eq 0 ]; then
    echo "OK - All checks passed"
    exit 0
elif [ $? -eq 1 ]; then
    echo "WARNING - Healthy with warnings"
    exit 1
else
    echo "CRITICAL - System degraded"
    exit 2
fi

API Integration

Parse JSON output:

# Add JSON output option
calypso-healthcheck --json > /tmp/health.json

Maintenance

Log Rotation

Logs are stored in /var/log/calypso-healthcheck-*.log

Create /etc/logrotate.d/calypso-healthcheck:

/var/log/calypso-healthcheck-*.log {
    weekly
    rotate 12
    compress
    delaycompress
    missingok
    notifempty
}

Cleanup Old Logs

# Remove logs older than 30 days
find /var/log -name "calypso-healthcheck-*.log" -mtime +30 -delete

Best Practices

1. Run after reboot - Verify all services started correctly
2. Schedule regular checks - Daily or weekly automated runs
3. Monitor exit codes - Alert on degraded/critical status
4. Review logs periodically - Identify patterns or recurring issues
5. Update checks - Add new components as system evolves
6. Baseline health - Establish normal operating parameters
7. Document exceptions - Note known warnings that are acceptable

See Also

• pre-reboot-checklist.md - Pre-reboot verification
• bacula-vtl-troubleshooting.md - VTL troubleshooting guide
• System logs: /var/log/syslog, /var/log/bacula/

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Created: 2025-12-31
Script: /usr/local/bin/calypso-healthcheck