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EXAM DUMPS
REDHAT
EX210
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Red Hat Certified Specialist in Cloud
Infrastructure
, 1.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?
Answer:
2. Log in to the OpenStack Controller node as root: ssh root@controller-node
3. Check the status of all OpenStack-related services:
systemctl list-units --type=service --state=running | grep openstack
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4. Identify any failed services by running: systemctl list-units --type=service
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--state=failed
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5. If the nova-api or any other service is down, restart it: systemctl restart openstack-
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nova-api
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6. Verify the service has started successfully and check logs for issues:
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systemctl status openstack-nova-api
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journalctl -xe -u openstack-nova-api
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Explanation:
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Ensuring that OpenStack services are running is critical for the stability of the cloud
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infrastructure. The systemctl list-units command helps identify running and failed
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services, and restarting them ensures minimal downtime. The journalctl -xe command
8.
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provides detailed logs to debug issues related to service failures. Regular monitoring
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of service statuses helps in proactive issue resolution.
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7.As part of routine maintenance, you need to check and confirm whether the
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OpenStack Identity (Keystone) service is functional and responding correctly.
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How would you verify the Keystone service's status, check if it is accessible via API,
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and restart it if necessary?
Answer:
8. Check Keystone service status on the controller node: systemctl status openstack-
keystone
9. If the service is not running, restart it:
systemctl restart openstack-keystone
10. Verify API connectivity by running a token authentication request: openstack