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<h1 class="topictitle1">Monitor cluster status</h1>
<div><p>Taking appropriate actions when necessary, the cluster resource
services performs basic monitoring of a cluster and its components using the
reliable message function and heartbeat monitoring.</p>
<div class="section"><p>You can also manually monitor the status of a cluster and its
components.</p>
<p><strong>Using iSeries™ Navigator</strong></p>
<p>This requires Option
41 (HA Switchable Resources) to be installed and licensed.</p>
<p>To monitor
the status of a cluster in iSeries Navigator:</p>
</div>
<ol><li><span>In iSeries Navigator,
expand Management Central.</span></li>
<li><span>Expand <span class="uicontrol">Clusters</span>.</span></li>
<li><span>Navigate within the iSeries Navigator folders for the desired
cluster to view the status of the cluster, its nodes, and resources using
the Status column in the iSeries Navigator list. The online help contains
descriptions of the possible values for the Status column. You can also right-click
on components of the cluster and select <span class="uicontrol">Properties</span> to
view information about the cluster.</span></li>
</ol>
<div class="section"><p><strong>Using CL commands and APIs</strong></p>
<p>You can use the following
commands and APIs to monitor cluster status:</p>
<dl><dt class="dlterm">Cluster Information</dt>
<dd>Retrieves information about a cluster, such as the nodes in the cluster,
which adapter IP addresses are being used on each node, and the status of
each node in the cluster. <ul><li><a href="../cl/dspcluinf.htm"><span class="cmdname">Display
Cluster Information (DSPCLUINF)</span> command</a></li>
<li><a href="../apis/clcntlstci.htm"><span class="apiname">List
Cluster Information (QcstListClusterInfo)</span> API</a></li>
<li><a href="../apis/clcntlstddi.htm"><span class="apiname">List
Device Domain Info (QcstListDeviceDomainInfo)</span> API</a></li>
<li><a href="../apis/clcntrtvci.htm"><span class="apiname">Retrieve
Cluster Resource Services Information (QcstRetrieveCRSInfo)</span> API</a></li>
<li><a href="../apis/clcntrtvci.htm"><span class="apiname">Retrieve
Cluster Information (QcstRetrieveClusterInfo)</span> API</a></li>
</ul>
</dd>
<dt class="dlterm">Cluster Resource Group information</dt>
<dd>Generates a list of cluster resource groups and information about the
cluster resource group in the cluster, such as the name of the primary node
of each CRG in the cluster. <ul><li><a href="../cl/dspcrginf.htm"><span class="cmdname">Display
Cluster Resource Group Information (DSPCRGINF)</span> command</a></li>
<li><a href="../apis/clrglstcrg.htm"><span class="apiname">List
Cluster Resource Groups (QcstListClusterResourceGroups)</span> API</a></li>
<li><a href="../apis/clrglstcrgi.htm"><span class="apiname">List
Cluster Resource Group Information (QcstListClusterResourceGroupInf)</span> API</a></li>
</ul>
</dd>
</dl>
</div>
</div>
<div>
<div class="familylinks">
<div class="parentlink"><strong>Parent topic:</strong> <a href="rzaigmanage.htm" title="This topic contains information that covers some of the tasks that involve managing your clusters.">Manage clusters</a></div>
</div>
<div class="relconcepts"><strong>Related concepts</strong><br />
<div><a href="rzaigconceptsreliablemessagefunction.htm" title="The reliable message function of cluster resource services keeps track of each node in a cluster and ensures that all nodes have consistent information about the state of cluster resources.">Reliable message function</a></div>
<div><a href="rzaigconceptsheartbeatmonitor.htm" title="Heartbeat monitoring is a cluster resource services function that ensures that each node is active by sending a signal from every node in the cluster to every other node in the cluster to convey that they are still active.">Heartbeat monitoring</a></div>
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