Troubleshooting & Debugging¶
This section contains technical articles focused on debugging various systems and applications.
Featured Debugging Guides¶
PostgreSQL on OpenShift
Troubleshooting for PostgreSQL deployments running on OpenShift, covering common issues and their solutions.
OpenStack OVN Networking
Deep dive into OVN networking architecture in OpenStack, with detailed debugging techniques for common problems.
Debugging by Platform¶
PostgreSQL on OpenShift
Troubleshooting for PostgreSQL instances running on OpenShift:
Database connection issues
Performance bottlenecks
Storage-related problems
Backup and recovery scenarios
OVN Networking
Debugging OVN networking issues in OpenStack:
Understanding the OVN architecture
Network traffic flow analysis
Common failure scenarios and their solutions
Command-line debugging tools
Debugging Cheat Sheets¶
OpenShift PostgreSQL Debugging
# Get PostgreSQL pod status
oc get pods -l app=postgresql
# Check logs
oc logs <pod-name>
# Connect to PostgreSQL instance
oc rsh <pod-name>
psql -U postgres
# Check PostgreSQL configuration
oc exec <pod-name> -- cat /opt/bitnami/postgresql/conf/postgresql.conf
OpenStack OVN Debugging
# List OVN northbound database content
ovn-nbctl show
# List OVN southbound database content
ovn-sbctl show
# Check logical flows
ovn-sbctl lflow-list
# Trace a packet through OVN
ovn-trace <switch> "inport=<port_id> ... <packet details>"