Best practices for troubleshooting KVM issues
- Keep it simple, in configuration: What good does a situation in which you deployed 50 OpenStack hosts across three subnets in one site do? Just because you can subnet to an inch of an IP range's life doesn't mean you should. Just because you have eight available connections on your server doesn't mean that you should LACP all of them to access iSCSI storage. Think about end-to-end configuration (for example, Jumbo Frames configuration for iSCSI networks). Simple configuration almost always means simpler troubleshooting.
- Keep it simple, in troubleshooting: Don't go chasing the super-complex scenarios first. Start simple. Start with log files. Check what's written there. With time, use your gut feeling as it will develop and you'll be able to trust it.
- Use monitoring tools such...