Cisco Cisco Email Security Appliance C160 Mode D'Emploi
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Cisco IronPort AsyncOS 7.6 for Email Advanced Configuration Guide
OL-25137-01
Chapter 8 Centralized Management
Leaving a Cluster Permanently (Removal)
You use the
REMOVEMACHINE
operation of
clusterconfig
to remove a machine permanently from a
cluster. When a machine is permanently removed from a cluster, its configuration is “flattened” such that
it will work the same as it did when it was part of the cluster. For example, if there is only a cluster-mode
Global Unsubscribe table, the Global Unsubscribe table data will be copied to the machine’s local
configuration when the machine is removed from the cluster.
it will work the same as it did when it was part of the cluster. For example, if there is only a cluster-mode
Global Unsubscribe table, the Global Unsubscribe table data will be copied to the machine’s local
configuration when the machine is removed from the cluster.
Upgrading Machines in a Cluster
A cluster does not allow the connected machines to have different versions of AsyncOS. Before you
perform an upgrade of AsyncOS, you need to disconnect each machine in the cluster will via the
perform an upgrade of AsyncOS, you need to disconnect each machine in the cluster will via the
clusterconfig
command. After you upgrade all the machines, the cluster can be reconnected via the
clusterconfig
command. You can have two separate clusters running while you upgrade machines to
the same version. You can also upgrade clustered machines on the GUI Upgrades page.
Note
If you use the upgrade command before disconnecting the individual machine from the cluster, AsyncOS
disconnects all the machines in the cluster. Cisco Systems recommends that you disconnect each
machine from the cluster before upgrading it. Then, other machines can continue working as a cluster
until each is disconnected and upgraded.
disconnects all the machines in the cluster. Cisco Systems recommends that you disconnect each
machine from the cluster before upgrading it. Then, other machines can continue working as a cluster
until each is disconnected and upgraded.
To upgrade the machines in a cluster via the CLI:
Step 1
On a machine in the cluster, use the
disconnect
operation of
clusterconfig
. For example, to disconnect
the machine
losangeles.example.com
, type
clusterconfig
disconnect
losangeles
.example.com
.
No
commit
is necessary.
Step 2
Optionally, use the
suspendlistener
command to halt acceptance of new connections and messages
during the upgrade process.
Step 3
Issue the
upgrade
command to upgrade AsyncOS to a newer version.
Note
Disregard any warnings or confirmation prompts about disconnecting all of the machines in the
cluster. Because you have disconnected the machine, AsyncOS does not disconnect the other
machines in the cluster at this point.
cluster. Because you have disconnected the machine, AsyncOS does not disconnect the other
machines in the cluster at this point.
Step 4
Select the version of AsyncOS for the machine. The machine will reboot after the upgrade is complete.
Step 5
Use the
resume
command on the upgraded machine to begin accepting new messages.
Step 6
Repeat steps 1 - 5 for each machine in the cluster.
Note
After you disconnect a machine from the cluster, you cannot use it to change the configurations
of other machines. Although you can still modify the cluster configuration, do not change it
while machines are disconnected because settings can become unsynchronized.
of other machines. Although you can still modify the cluster configuration, do not change it
while machines are disconnected because settings can become unsynchronized.
Step 7
After you have upgraded all the machines, use the reconnect operation of clusterconfig for each upgraded
machine to reconnect it. For example, to reconnect the machine
machine to reconnect it. For example, to reconnect the machine
losangeles.example.com
, type
clusterconfig
reconnect
losangeles
.example.com
. Note that you can only connect a machine to
a cluster that is running the same version of AsyncOS.