Cisco Cisco Expressway Maintenance Manual
4.
Append your public key to the
authorized_keys
file with
cat /tandberg/.ssh/id_rsa.pub >>
/tandberg/.ssh/authorized_keys
where id_rsa.pub is substituted with the name of your public key. Do not place your key anywhere else
because the key could be lost on upgrade (
because the key could be lost on upgrade (
authorized_keys
file does persist)
5.
Log off and test SSH access using your own key
If you cannot access the Expressway with your key, you may need to connect as
root
and restart the
SSH daemon with
/etc/init.d/sshd restart
Enabling Maintenance Mode
Maintenance mode is typically used when you need to upgrade or take out of service an Expressway peer that is part
of a cluster. It allows the other cluster peers to continue to operate normally while the peer that is in maintenance
mode is upgraded or serviced.
of a cluster. It allows the other cluster peers to continue to operate normally while the peer that is in maintenance
mode is upgraded or serviced.
Putting a peer into maintenance mode provides a controlled method of stopping any further calls from being managed
by that peer:
by that peer:
■
Standard Expressway sessions:
—
New calls will be handled by another peer in the cluster.
—
Existing calls will continue until the call is terminated. If necessary, you can manually remove any calls on
this peer that do not clear automatically by going to Status > Calls, selecting the check box next to the calls
you want to terminate and clicking Disconnect (note that SIP calls may not disconnect immediately).
this peer that do not clear automatically by going to Status > Calls, selecting the check box next to the calls
you want to terminate and clicking Disconnect (note that SIP calls may not disconnect immediately).
■
Unified CM mobile and remote access sessions:
—
Any existing calls passing through that Expressway will be dropped.
—
Jabber clients will failover automatically and re-register through another peer in the cluster.
—
Clients running TC software will not failover automatically will have to be restarted.
To maintain capacity, we recommend that you only enable maintenance mode on one peer at a time.
To enable maintenance mode:
1.
Log in the relevant peer.
2.
Go to the Maintenance mode page (Maintenance > Maintenance mode).
3.
Set Maintenance mode to On.
4.
Click Save and click OK on the confirmation dialog.
Note that:
■
An alarm is raised while the peer is in maintenance mode.
■
You can monitor the Resource usage page (Status > System > Resource usage) to check how many calls are
currently being handled by that peer.
currently being handled by that peer.
■
Maintenance mode is automatically disabled if the peer is restarted.
About Upgrading Software Components
You can install new releases of the Expressway software components on your existing hardware. Component
upgrades can be performed in one of two ways:
upgrades can be performed in one of two ways:
■
- this is the recommended process.
■
(SCP/PSCP).
This guide describes how both of these methods are used to perform upgrades.
191
Cisco Expressway Administrator Guide
Maintenance