Changing Clustering Mode; Adding And Deleting Nodes In A Cluster; Adding Nodes To A Cluster; To Change Clustering Mode - HP P4535A - Web Cache Server Appliance Administrator's Manual

Chapter 6

Changing clustering mode

To change clustering mode:

1. Telnet into the HP web cache appliance and select Shell Access as described in
Methods‚ on page
2. Open the
records.config
3. Edit the following variable:
Variable
proxy.config.cluster.type
4. Save and close the
5. Run the following command to apply the configuration changes.
traffic_line -x
6. Wait several minutes, then run the command
process on all the nodes in the cluster.

Adding and deleting nodes in a cluster

You can add a node or delete a node from a Traffic Server cluster at any time. When you add a new node to
the cluster, Traffic Server detects it automatically. When you remove a node from the cluster, Traffic Server
removes all references to the missing node.

Adding nodes to a cluster

Traffic Server can automatically detect new Traffic Server nodes on your network and add them to the cluster,
propagating the latest configuration information to the newcomer. This provides a convenient way to bootstrap
new machines.
IMPORTANT
If you have an existing web cache appliance installed and you want to add that appliance to the cluster, you do
not have to re-install the Traffic Server software on the node. Instead, you can edit certain configuration
variables on the existing Traffic Server. Follow the procedure below.

To add a cache appliance to a cluster:

Make sure that the appliance to be added has the same port assignments as those in the cluster. Also change
the cluster name to the same name as the appliance in the cluster. After inital configuration, by default the
cluster name is set the same as the node name.
1. Telnet into the HP web cache appliance and select Shell Access as described in
Methods‚ on page
2. Using Vi, open the
you want to add to the cluster.
7.
file located in Traffic Server's
file.
records.config
The nodes in a cluster must be homogeneous; each node must be the same hardware
platform and must run the same version of the web cache appliance software.
7.
file located in the Traffic Server's
records.config
directory with Vi.
config
Description
Set this variable to:
1 for full-clustering mode.
2 for management-only mode.
3 for no clustering.
to restart the
traffic_line -M
Traffic Server Clusters
Overview of Access
traffic_manager
Overview of Access
directory on the node
config
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