Cisco Cisco Expressway Maintenance Manual
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 registrations or calls from
being managed by that peer:
being managed by that peer:
■
Standard Expressway sessions:
—
New calls and registrations will be handled by another peer in the cluster.
—
Existing registrations are allowed to expire and they then should re-register to another peer (see
Expressway Cluster Creation and Maintenance Deployment Guide for more information about endpoint
configuration and setting up DNS SRV records).
Expressway Cluster Creation and Maintenance Deployment Guide for more information about endpoint
configuration and setting up DNS SRV records).
—
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.
are 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.
■
We recommended that you upgrade Expressway components while the system is inactive.
■
From X8.8 onwards, the Expressway release packages are signed to give you confidence in their integrity.
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Cisco Expressway Administrator Guide
Maintenance