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| High Availability Services
ClearPass Guest 3.9 | Deployment Guide
Cluster Maintenance
Use the
Cluster Maintenance
command link to access maintenance functions related to the cluster.
The maintenance commands that are available on this page will depend on the current state of the cluster as
well as which node you are logged into.
Recovering From a Failure
From a cluster maintenance perspective, there are two kinds of failure:
A
temporary outage
is an event or condition that causes the cluster to failover to the secondary node.
Clearing the condition allows the cluster’s primary node to resume operations in essentially the same
state as before the outage.
A
hardware failure
is a fault that to correct requires rebuilding or replacing one of the nodes of the
cluster.
The table below lists some system failure modes and the corresponding cluster maintenance that is
required.
Recovering From a Temporary Outage
Use this procedure to repair the cluster and return to a normal operating state:
1. This procedure assumes that the primary node has experienced a temporary outage, and the cluster has
failed over to the secondary node.
2. Ensure that the primary node and the secondary node are both online.
3. Log into the secondary node. (Due to failover, this node will be assigned the cluster’s virtual IP address.)
4. Click Cluster Maintenance, and then click the
Recover Cluster
command link.
Some maintenance commands are only available on the secondary node. Other commands may change the active
state of the cluster. For this reason it is recommended that cluster maintenance should only be performed by
logging into a specific node in the cluster using its IP address.
Table 37
Failure Modes
Failure Mode
Maintenance
Software failure – system crash, reboot or hardware reset
Temporary outage
Power failure
Temporary outage
Network failure – cables or switching equipment
Temporary outage
Network failure – appliance network interface
Hardware failure
Hardware failure – other internal appliance hardware
Hardware failure
Data loss or corruption
Hardware failure
Summary of Contents for ClearPass Guest 3.9
Page 1: ...ClearPass Guest 3 9 Deployment Guide ...
Page 32: ...32 Management Overview ClearPass Guest 3 9 Deployment Guide ...
Page 178: ...178 RADIUS Services ClearPass Guest 3 9 Deployment Guide ...
Page 316: ...316 Guest Management ClearPass Guest 3 9 Deployment Guide ...
Page 410: ...410 Administrator Tasks ClearPass Guest 3 9 Deployment Guide ...
Page 414: ...414 Administrator Tasks ClearPass Guest 3 9 Deployment Guide ...
Page 423: ...ClearPass Guest 3 9 Deployment Guide Hotspot Manager 423 ...
Page 440: ...440 High Availability Services ClearPass Guest 3 9 Deployment Guide ...
Page 518: ...518 Index ClearPass Guest 3 9 Deployment Guide ...