Create End Users¶

After setting up your system administrators, use a Level1SystemAdmin system administrator to configure ‘end users’.

In the following example, creating end users consists of:

Create a general end user kubernetes ClusterRole with restricted kubernetes capabilities.
For one or more specific end user groups:
- Create an LDAP group;
- You can disable the SSH access for this LDAP group (i.e., restricting these end users to only use remote CLIs / APIs / GUIs);
- Create a Kubernetes namespace for the group;
- Bind the general end user kubernetes cluster role to the LDAP group for this kubernetes namespace,
- Create one or more LDAP users in this LDAP group.

Prerequisites

You should already have created a system administrator.
You need to perform this procedure using the Level1SystemAdmin system administrator.

Procedure

Login to the active controller as a Level1SystemAdmin system administrator, joefulladmin in this example.

Use either a local console or SSH.

Use the local_starlingxrc to setup StarlingX environment variables and to setup your keystone user’s authentication credentials.

$ source local_starlingxrc

Enter the password to be used with keystone user joefulladmin:
Created file /home/joefulladmin/joefulladmin-openrc

Use the oidc-auth to authenticate via OIDC/LDAP for kubernetes CLI.

$ oidc-auth
Using "joefulladmin" as username.
Password:
Successful authentication.
Updated /home/joefulladmin/.kube/config.

Create a directory for temporary files for setting up users and groups.
```
$ mkdir /home/joefulladmin/users
```

Create a general end user kubernetes ClusterRole with restricted kubernetes authorization privileges.

$ cat << EOF > /home/joefulladmin/users/GeneralEndUser-ClusterRole.yml
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
   name: GeneralEndUser
rules:
# For the core API group (""), allow full access to all resource types
# EXCEPT for resource policies (limitranges and resourcequotas) only allow read access
-      apiGroups: [""]
   resources: ["bindings", "configmaps", "endpoints", "events", "persistentvolumeclaims", "pods", "podtemplates", "replicationcontrollers", "secrets", "serviceaccounts", "services"]
   verbs: ["get", "list", "watch", "create", "update", "patch", "delete"]
-      apiGroups: [""]
   resources: [ "limitranges", "resourcequotas" ]
   verbs: ["get", "list"]
# Allow full access to all resource types of the following explicit list of apiGroups.
# Notable exceptions here are:
#     ApiGroup                      ResourceTypes
#     -------                       -------------
#     policy                        podsecuritypolicies, poddisruptionbudgets
#     networking.k8s.io             networkpolicies
#     admissionregistration.k8s.io  mutatingwebhookconfigurations, validatingwebhookconfigurations
#
-      apiGroups: ["apps", "batch", "extensions", "autoscaling", "apiextensions.k8s.io", "rbac.authorization.k8s.io"]
   resources: ["*"]
   verbs: ["get", "list", "watch", "create", "update", "patch", "delete"]
# Cert Manager API access
-      apiGroups: ["cert-manager.io", "acme.cert-manager.io"]
   resources: ["*"]
   verbs: ["get", "list", "watch", "create", "update", "patch", "delete"]
EOF

$ kubectl apply -f /home/joefulladmin/users/GeneralEndUser-ClusterRole.yml

For one or more specific end user groups, create an LDAP group, Kubernetes namespace and one or more LDAP users.

Create a new local LDAP group for the end user group.
```
$ sudo ldapaddgroup ABC-EndUsers
```
Optional step: Disallow this local LDAP group from using SSH.

Users of this LDAP group can only use the remote kubernetes API/CLI/GUI. Update the /etc/security/group.conf with LDAP group mappings.

Note

If it is AIO-DX controller configuration, disallow this local LDAP group on both controllers.
```
$ sudo sed -i '$ a\*;*;%ABC-EndUsers;Al0000-2400;denyssh' /etc/security/group.conf
```

Create a kubernetes namespace for the end user group.

$ kubectl create namespace abc-ns

Bind the GeneralEndUser role to this LDAP group for this kubernetes namespace.

$ cat << EOF > /home/joefulladmin/users/ABC-EndUsers-rolebinding.yml
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
   name: ABC-EndUsers
   namespace: abc-ns
subjects:
-     kind: Group
   name: ABC-EndUsers
   apiGroup: rbac.authorization.k8s.io
roleRef:
   kind: ClusterRole
   name: GeneralEndUser
   apiGroup: rbac.authorization.k8s.io
EOF

$ kubectl apply -f  /home/joefulladmin/users/ABC-EndUsers-rolebinding.yml

Create one or more LDAP users for the end user group.

$ sudo ldapusersetup -u steveenduser
Password:
Successfully added user steveenduser to LDAP
Successfully set password for user steveenduser
Warning : password is reset, user will be asked to change password at login
Successfully modified user entry uid=steveenduser,ou=People,dc=cgcs,dc=local in LDAP
Updating password expiry to 90 days
Successfully modified user entry uid=steveenduser,ou=People,dc=cgcs,dc=local in LDAP
Updating password expiry to 2 days

$ sudo ldapaddusertogroup steveenduser ABC-EndUsers

Repeat the Create one or more LDAP users for the end user group step for the next user in this end user group.

Repeat the For one or more specific end user groups, create an LDAP group, kubernetes namespace and one or more LDAP users step for the next end user group.

Postrequisites

The end user created is able to, optionally, use SSH on the system to execute kubernetes CLI commands to manage the hosted containerized application and execute Linux commands. See section: End Users - Test Local Access using SSH or Kubernetes CLI.

Note

More setup is required for end user to use remote CLIs/GUIs, see section Remote Access.