Portal:Cloud VPS/Admin/Runbooks/TooManyCloudvirtsDown

Cloud VPS

• Cloud VPS technical documentation
• Cloud Services, Cloud VPS, and Toolforge overview
• Cloud VPS project
• Cloud VPS user roles and rights
• Help and communication
• Glossary
• Technical documentation resources

Instances and access

• Set up a Cloud VPS Instance
• Access Cloud VPS Instances
• Access Cloud VPS Instances with PuTTY and WinSCP
• Add Disk Space to instances (detachable volumes)

Security and policies

• Security groups and firewall settings
• Sudo policies
• Server groups

Horizon, proxies and Puppet

• About Horizon
• Floating IP addresses
• Proxy to reach Cloud VPS server
• Puppet on Cloud VPS
• Standalone puppetmaster

Additional documentation

• Set up a Cloud VPS Instance using MediaWiki-Vagrant
• Set up a Cloud VPS Instance using LAMP stack
• Development recommendations for easily moving to production

Programmatic usage

• OpenStack APIs
• Terraform

Administration

• Cloud VPS infrastructure
• Administrator documentation
• Administrator runbooks

[]

Overview

The procedures in this runbook require admin permissions to complete.

Error / Incident

There's a large amount of cloudvirt nodes down in the system.

This will have an effect on the capabilities of Openstack to schedule and run VMs by limiting the resources available. Possibly preventing new VMs from getting started and some running VMs to misbehave or not function.

Debugging

This might be the result of an ongoing intervention gone wrong, so first try to communicate with the rest of the team and look for any ongoing actions:

• Ask on irc (#wikimedia-cloud-admin) if someone is taking any action and forgot about it
• Check SAL (or sal.toolforge.org) for host being rebooted/taken down
• Check Netbox to make sure the host is not being decommed or network changes were not applied
• Check puppet for recent changes that might have affected the node

Then you can continue trying to figure out why the hosts are going down and not coming back up:

• Try to ssh to the host
• Try to ssh to the management port (see SRE/Dc-operations/Hardware_Troubleshooting_Runbook)

Common issues

Add here any issues you encounter.

Related information

• SAL (or sal.toolforge.org).
• Netbox
• Puppet merged changes
• SRE/Dc-operations/Hardware_Troubleshooting_Runbook

Support contacts

Communication and support

Support and administration of the WMCS resources is provided by the Wikimedia Foundation Cloud Services team and Wikimedia movement volunteers. Please reach out with questions and join the conversation:

Discuss and receive general support

• Chat in real time in the IRC channel #wikimedia-cloud ^connect, the bridged Telegram group, or the bridged Mattermost channel
• Discuss via email after you have subscribed to the cloud@ mailing list

Stay aware of critical changes and plans

• Subscribe to the cloud-announce@ mailing list (all messages are also mirrored to the cloud@ list)
• Read the News wiki page

Track work tasks and report bugs

Use a subproject of the #Cloud-Services Phabricator project to track confirmed bug reports and feature requests about the Cloud Services infrastructure itself

Read stories and WMCS blog posts

Read the Cloud Services Blog (for the broader Wikimedia movement, see the Wikimedia Technical Blog)

Old incidents

Provide a list of phabricator tasks of previous incidents to be able to more review previous instances of the issue.