Chapter 7. Add or delete a content delivery server

Procedure

1. Make sure sshd is running on the CDS node and that ports 443 and 5000 are open.

2. Navigate to the Red Hat Update Infrastructure Management Tool home screen.

   [root@rhua ~]# rhui-manager

3. Press c to select manage content delivery servers (CDS).

                -= Red Hat Update Infrastructure Management Tool =-
   
   -= Home =-
   
      r   manage repositories
      c   manage content delivery servers (CDS)
      l   manage HAProxy load-balancer instances
      s   synchronization status and scheduling
      e   create entitlement certificates and client configuration RPMs
      n   manage Red Hat entitlement certificates
      u   manage RHUI users
   
                                                      Connected: rhua.example.com

4. Type a to select register (add) a new Content Delivery Server instance.

   ------------------------------------------------------------------------------
   = Red Hat Update Infrastructure Management Tool =
   
   = Content Delivery Server (CDS) Management =
   
   l   list all known CDS instances managed by the RHUI
   a   register (add) a new CDS instance
   r   reinstall and reapply configuration to an existing CDS instance
   d   unregister (delete) a CDS instance from the RHUI
   
                                                 	Connected: rhua.example.com
   ------------------------------------------------------------------------------
   rhui (cds) => a

5. Enter the host name of the CDS to add.

   Hostname of the CDS instance to register:
   cds1.example.com

6. Enter the user name that will have SSH access to the CDS and have sudo privileges.

   Username with SSH access to <cds1.example.com> and sudo privileges:
   root

7. Enter the absolute path to the SSH private key for logging in to the CDS and press Enter.

   Absolute path to an SSH private key to log into <cds1.example.com> as root:
   /root/.ssh/id_rsa
   .........................................................................
   The following CDS has been successfully added:
   
   Hostname:             <cds1.example.com>
   SSH Username:     root
   SSH Private Key:  /root/.ssh/id_rsa
   
   The CDS will now be configured:
   …………………………………………………………..
   The CDS was successfully configured.

8. If adding the content delivery server fails, check that the firewall rules permit access between the RHUA and the CDS.

9. Run the mount command to see if Gluster Storage is mounted as read-write.

   [root@rhua ~]# mount | grep cds1.example.com
   
   cds1.example.com:rhui_content_0 on /var/lib/rhui/remote_share type fuse.glusterfs (rw,relatime,user_id=0,group_id=0,default_permissions,allow_other,max_read=131072)

10. After successful configuration, repeat these steps for any remaining CDSs. You can also add a CDS using the command line interface.

    [root@rhua ~]# rhui cds add cds1.example.com root /root/.ssh/id_rsa -u

Procedure

1. Navigate to the Red Hat Update Infrastructure Management Tool home screen.

   [root@rhua ~]# rhui-manager

2. Press c to select manage content delivery servers (CDS).

   -= Red Hat Update Infrastructure Management Tool =-
   
   -= Home =-
   
   r   manage repositories
   c   manage content delivery servers (CDS)
   l   manage HAProxy load-balancer instances
   s   synchronization status and scheduling
   e   create entitlement certificates and client configuration RPMs
   n   manage Red Hat entitlement certificates
   u   manage RHUI users
   
                                                         Connected: rhua.example.com

3. Type d to select unregister (delete) a CDS instance from the RHUI.

   ------------------------------------------------------------------------------
   = Red Hat Update Infrastructure Management Tool =
   
   = Content Delivery Server (CDS) Management =
   
   l   list all known CDS instances managed by the RHUI
   a   register (add) a new CDS instance
   r   reinstall and reapply configuration to an existing CDS instance
   d   unregister (delete) a CDS instance from the RHUI
   
                                                      Connected: rhua.example.com
   ------------------------------------------------------------------------------
    rhui (cds) => d

4. Enter the host name of the CDS to delete.

   Hostname of the CDS instance to unregister:
   cds1.example.com

5. Confirm the /etc/haproxy/haproxy.cfg file in the HAProxy instance

   #  cat /etc/haproxy/haproxy.cfg

Procedure

1. Make sure all your RHUI nodes are running version 3.1 or later. If you have originally installed RHUI from an older version, you have to reinstall your CDS nodes in rhui-manager first.
2. Transfer your legacy CA certificate to your CDS nodes and save it in the /etc/pki/rhui/legacy-ca/ directory.

3. Get the subject hash value from the certificate and keep it in a shell variable:

   #hash=`openssl x509 -hash -noout -in /etc/pki/rhui/legacy-ca/YOUR_CERT.crt`

4. Create a symbolic link to the certificate file in the /etc/pki/tls/certs/ directory with the hash and an unused number, starting from 0, as the symbolic link name:

   #ln -s /etc/pki/rhui/legacy-ca/YOUR_CERT.crt /etc/pki/tls/certs/$hash.0