Explanation: 1. Edit the systemd unit file for Neutron: vi /etc/systemd/system/openstack -neutron -server.service 2. Add the following settings under [Service]: Restart=on -failure RestartSec=10 StartLimitIntervalSec=30 StartLimitBurst=3 3. Reload the systemd daemon and apply changes: systemctl daemon -reload 4. Restart and enable the service: systemctl restart openstack -neutron -server systemctl enable openstack -neutron -server 5. Test by stopping the service and checking if it restarts: systemctl stop openstack -neutron -server sleep 15 systemctl status openstack -neutron -server You need to upgrade OpenStack packages while minimizing downtime. What are the necessary steps to upgrade OpenStack services safely without disrupting active workloads?
yum list updates | grep openstack 3. Upgrade OpenStack packages without affecting running instances: yum update -y openstack -\* 4. Restart updated services one by one to avoid downtime: systemctl restart openstack -nova -api systemctl restart openstack -glance -api 5. Verify that all services are running post-upgrade: openstack service list Your OpenStack environment is running out of disk space. How would you clean up old logs and temporary files while ensuring essential logs remain intact for troubleshooting?
You need to create an OpenStack database backup without stopping services. How would you take a consistent backup while ensuring minimal disruption?
systemctl stop 'openstack -*' 2. Log in to the MariaDB server and drop the current OpenStack database to remove corrupted data: mysql -u root -p -e "DROP DATABASE openstack;" 3. Restore the database from the latest backup: mysql -u root -p < /var/backups/openstack_backup.sql 4. Restart the database service to apply the restoration: systemctl restart mariadb 5. Start OpenStack services and validate their functionality: systemctl start 'openstack -*' openstack service list Your OpenStack control plane is experiencing high CPU usage, which is affecting system performance. How would you identify and mitigate CPU -intensive processes while ensuring critical services remain unaffected?
systemctl restart openstack -nova -compute 5. Optimize configuration settings in nova.conf to prevent excessive resource usage: vi /etc/nova/nova.conf # Adjust cpu_allocation_ratio to a lower value (e.g., 8.0 to 4.0) Users are reporting authentication failures when trying to access OpenStack services. How would you troubleshoot and resolve issues related to the OpenStack Keystone service?
➢ TOTAL QUESTIONS: 290 You are responsible for managing the OpenStack control plane and ensuring all core services are running without failure. A user reports that OpenStack Compute (Nova) is not responding. Your task is to check the status of all OpenStack services on the control plane, restart any failed services, and verify that they are running correctly. How would you achieve this?
