.. _cluster-read-only: Cluster Read Only Mode ====================== It is possible to add a cluster with only its hostname and port number, and no username and password credentials. This creates a copy of the cluster and its VMs in your local Ganeti Web Manager database without giving you the ability to change the cluster itself. In Read-Only mode, you CAN: ~~~~~~~~~~~~~~~~~~~~~~~~~~~ - Assign ownership of VMs to GWM users from the Orphans page - Delete VMs from your Ganeti Webmanager database from the Missing VMs page - Import nodes to your database or delete nodes from it - Assign permissions to users on the cluster or VM (note that although you can assign VM create permission to a user or group, they cannot actually create a VM in read-only mode) - Edit the cluster, so that you can go back and add username/password credentials and gain full privileges on it later. - Delete the record of the cluster from your database (Note: This does not affect the actual cluster) - Record a default quotas for Virtual CPUs, Disk Space, and Memory - Change the cluster's slug (the name of the cluster as it appears in the url: /cluster//) In Read-Only mode, you can NOT: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - Redistribute the cluster's configuration - Start, stop, or reinstall a VM - Migrate or change disks - Access a VM's console - Create a new VM on the cluster