Sessions

Overview #

Whenever a user starts mirrord on a cluster where mirrord for Teams is installed, the Operator assigns a session to this user, until they stop running mirrord, at which point the session is closed in the Operator automatically.

See active Operator sessions #

Users can use the command mirrord operator status to see active sessions in the cluster. For example, in the following output, we can see the session ID, the target used, the namespace of the target, the session duration, and the user running that session. We can also see that Ports is empty, meaning the user isn’t stealing or mirroring any traffic at the moment.

+------------------+-----------------------------+-----------+---------------------------------------------------------------+-------+------------------+
| Session ID       | Target                      | Namespace | User                                                          | Ports | Session Duration |
+------------------+-----------------------------+-----------+---------------------------------------------------------------+-------+------------------+
| 487F4F2B6D2376AD | deployment/ip-visit-counter | default   | Aviram Hassan/[email protected]@avirams-macbook-pro-2.local |       | 4s               |
+------------------+-----------------------------+-----------+---------------------------------------------------------------+-------+------------------+

The User field is generated in the following format - whoami/k8s-user@hostname. whoami and hostname are from the local machine, while k8s-user is the user we see from the operator side.

In this example, we can see that the session has an active steal on port 80, filtering HTTP traffic with the following filter: X-PG-Tenant: Avi.+

+------------------+-----------------------------+-----------+---------------------------------------------------------------+----------------------------------------------------------+------------------+
| Session ID       | Target                      | Namespace | User                                                          | Ports                                                    | Session Duration |
+------------------+-----------------------------+-----------+---------------------------------------------------------------+----------------------------------------------------------+------------------+
| C527FE7D9C30979E | deployment/ip-visit-counter | default   | Aviram Hassan/[email protected]@avirams-macbook-pro-2.local | Port: 80, Type: steal, Filter: header=X-PG-Tenant: Avi.+ | 13s              |
+------------------+-----------------------------+-----------+---------------------------------------------------------------+----------------------------------------------------------+------------------+

Stop active Operator sessions #

Users may also forcefully stop a session with the mirrord operator session CLI commands. These allow users to manually close Operator sessions while they’re still alive (user is still running mirrord).

The session management commands are:

• mirrord operator session kill-all which will forcefully stop ALL sessions!
• mirrord operator session kill --id {id} which will forcefully stop a session with id, where you may obtain the session id through mirrord operator status;

sessions RBAC #

Every mirrord-operator-user has access to all session operations by default, as they come with deletecollection and delete privileges for the sessions resource. You may limit this by changing the RBAC configuration. Here is a sample role.yaml with the other Operator rules omitted:

apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: mirrord-operator-user
rules:
- apiGroups:
  - operator.metalbear.co
  resources:
  - sessions
  verbs:
  - deletecollection
  - delete

• mirrord operator session kill-all requires the deletecollection verb;
• mirrord operator session kill --id {id} requires the delete verb;