Headup

Sometimes you need to change the password to a user in a qcow2 image, to test locally, or if you are using an infrastructure without cloud-i...

A quick way to get the total amount of provisioned space from cinder alvaro@skyline.local: ~ $ cinder list --all-tenants mysql like output :...

In any kind of distributed system, you will have to choose between consistency, availability, and partitioning, the   CAP theorem   states t...

A quick guide to remembering how to keep up-to-date forked repos: First: Manage a set of tracked repositories. alvaro@skyline.local: ~/docke...

Monitors can be severely affected by significant clock skews across the monitor nodes. This usually translates into weird behavior with no o...

  I don't recall any reason to do this other than using the same user and auth key to authenticate in different Ceph clusters, like in a...

Suppose that you want to migrate an instance from different infrastructures or you want to hand over an instance information to a client, so...