Common Production Failures and Their Handling Procedures

Common Production Failures

Production environments can encounter various failure types such as network, server, database, software bugs, security vulnerabilities, storage, configuration errors, and third‑party service issues.

Network Failure Handling

How to Detect Network Failures

Connection status: check device LEDs and physical links.

Ping test: use ping to verify connectivity.

Traffic monitoring: use tools like Wireshark or ntop.

Latency test: use ping, traceroute, MTR.

Log analysis: review server and network device logs.

How to Investigate Network Failures

Check physical connections.

Restart network devices (router, switch, modem).

Verify network configuration (IP, subnet, gateway).

Validate DNS settings.

Check firewall rules.

Test other devices or websites.

How to Resolve Network Failures

Repair physical cabling.

Restart routers/switches.

Correct network configuration.

Contact the network service provider if needed.

Server Failure Handling

How to Detect Server Failures

No response to requests.

Check error logs (system, application).

Monitor performance metrics (CPU, memory, disk).

How to Investigate Server Failures

Check hardware indicators (power, fans, disks).

Remote login (SSH) to verify access.

Restart the server after backing up data.

Inspect hardware components (disk, memory, NIC, power).

Check services and processes.

Review logs for errors.

Contact vendor or technical support.

How to Resolve Server Failures

Restart the server to clear temporary issues.

Check and fix physical connections.

Inspect and replace faulty hardware.

Analyze logs for root cause.

Verify network configuration.

Restore data from backups.

Update OS, drivers, and software patches.

Use diagnostic tools for hardware and performance.

Seek professional support if needed.

Database Failure Handling

How to Detect Database Failures

Connection errors or refusals.

Database error logs (MySQL, Oracle, etc.).

Monitoring tools showing abnormal CPU, memory, I/O.

How to Investigate Database Failures

Check database service status.

Test remote connections.

Verify configuration (ports, listeners).

Check disk space usage.

Analyze logs for errors, deadlocks, corruption.

Run health‑check tools (DBVERIFY, CHECK TABLE).

Restart the database service after backup.

How to Resolve Database Failures

Repair or restore corrupted files.

Adjust database parameters.

Performance tuning (queries, indexes, resources).

Upgrade or patch the database version.

Restore from backups if necessary.

Seek professional database support.

Software Error Handling

How to Detect Software Errors

Application error messages or exceptions.

Abnormal behavior (crashes, hangs).

User feedback and bug reports.

How to Investigate Software Errors

Reproduce the issue.

Analyze logs for stack traces and error codes.

Use debugging tools.

Conduct code reviews.

Verify environment and configuration.

Apply available patches or updates.

How to Resolve Software Errors

Fix the code based on findings.

Adjust application configuration.

Update to newer software versions.

Security Vulnerability Handling

How to Detect Security Vulnerabilities

Regular security audits and scans.

Analyze security logs for anomalies.

Use IDS/IPS to detect exploit attempts.

Monitor vendor security bulletins.

How to Investigate Security Vulnerabilities

Review system and application configurations.

Audit access controls and permissions.

Monitor network traffic for suspicious activity.

Run malware scans.

How to Resolve Security Vulnerabilities

Apply security patches promptly.

Strengthen access control and authentication.

Encrypt data at rest and in transit.

Harden firewalls, IDS/IPS, and gateways.

Implement continuous security monitoring and audits.

Provide security awareness training.

Conduct regular vulnerability assessments and penetration tests.

Ensure compliance with security standards.

Develop disaster‑recovery and business‑continuity plans.

Seek professional security assistance when needed.

Segment networks to limit lateral movement.

Improve log management and analysis.

Secure physical access to equipment.

Assess and secure the supply chain.

Establish rapid incident response procedures.

Storage Failure Handling

How to Detect Storage Failures

Monitor storage health via vendor tools.

Check indicator lights on disks.

Review system error logs for storage‑related messages.

Observe application errors when accessing storage.

How to Investigate Storage Failures

Validate storage connections (power, data, fiber, network).

Check disk health and SMART data.

Run storage diagnostic utilities.

Restart storage devices and servers.

Consider data recovery and backup status.

How to Resolve Storage Failures

Replace faulty disks.

Repair file‑system errors.

Expand storage capacity if needed.

Migrate or rebuild data.

Contact the storage vendor for support.

Configuration Error Handling

How to Detect Configuration Errors

Monitor system logs and error reports.

Gather user feedback on misbehaving features.

Perform comprehensive functional testing.

How to Investigate Configuration Errors

Review configuration files for incorrect settings.

Check environment variables and command‑line parameters.

Compare against official documentation and best practices.

How to Resolve Configuration Errors

Correct the configuration files.

Update environment variables and parameters.

Restart affected services.

Run functional and performance tests to verify.

Third‑Party Service Failure Handling

How to Detect Third‑Party Service Failures

Monitor service status pages and alerts.

Collect user feedback indicating issues.

Analyze application logs for third‑party errors.

How to Investigate Third‑Party Service Failures

Determine the scope of the problem.

Check network connectivity and integration configuration.

Visit the provider’s status page for known incidents.

Contact the provider’s support with detailed logs.

How to Resolve Third‑Party Service Failures

Verify and correct integration settings (API keys, URLs).

Restart your application or services.

Ensure network connectivity is not blocked.

Consult the provider’s status page for updates.

Escalate to provider support if needed.

Consider alternative services if the issue persists.

Implement backup plans for critical third‑party dependencies.