4.2 OES Cluster Services Configuration and Setup

Start your Internet browser and enter the URL for iManager.

The URL is https://server_ip_address/nps/iManager.html. Replace server_ip_address with the IP address or DNS name of a server in the cluster or with the IP address for Apache-based services.

Enter your username and password.

In the left column, click Clusters, then click the Cluster Options link.

iManager displays four links under Clusters that you can use to configure and manage your cluster.

Browse to locate and select the Cluster object of the cluster you want to manage, then click the New link.

Specify Resource as the resource type you want to create by clicking the Resource radio button, then click Next.

Specify a name for the NetStorage cluster resource that you want to create.

Do not use periods in cluster resource names. Client for Open Enterprise Servers interpret periods as delimiters. If you use a space in a cluster resource name, that space is converted to an underscore.

In the Inherit From Template field, select the Generic_IP_Service template.

Select the Define Additional Properties check box, then click Next.

Select the Define Additional Properties check box, click Create, and then continue with Section 4.2.3, Editing NetStorage Load, Unload and Monitor Scripts.

The Generic IP Service template helps configure the NetStorage cluster resource by automatically creating load and unload scripts, setting failover and failback modes, and assigning the resource to all nodes in the cluster.

You should only assign the resource to those nodes in the cluster that have NetStorage installed and running.

In iManager, click Clusters, then click Cluster Options.

Browse to locate and select the Cluster object of the cluster you want to manage.

Select the check box next to the resource whose load script you want to edit, then click the Details link.

Click the Scripts tab, then click the Load Script link. Edit the load script for your specific configuration.

The default load script is:

#!/bin/bash
. /opt/novell/ncs/lib/ncsfuncs

# define the IP address
RESOURCE_IP=a.b.c.d

# add the IP address
exit_on_error add_secondary_ipaddress $RESOURCE_IP

# start the service
exit_on_error systemctl start myservice.service

# return status
exit 0

Click the Scripts tab, then click the UnLoad Script link. Edit the unload script for your specific configuration.

#!/bin/bash
. /opt/novell/ncs/lib/ncsfuncs

# define the IP address
RESOURCE_IP=a.b.c.d

# request service stop
ignore_error systemctl stop myservice.service

# del the IP address
ignore_error del_secondary_ipaddress $RESOURCE_IP

# return status
exit 0 

Click the Scripts tab, then click the Monitor Script link. Edit the monitor script for your specific configuration.

#!/bin/bash
. /opt/novell/ncs/lib/ncsfuncs

# define the IP address
  RESOURCE_IP=a.b.c.d

# check the IP address
  exit_on_error status_secondary_ipaddress $RESOURCE_IP

# check the service
  exit_on_error systemctl status myservice.service

# return status
  exit 0 

Continue with Section 4.2.4, Setting the NetStorage Resource Start, Failover, and Failback Modes.

In iManager, click Clusters, then click Cluster Options.

Browse to locate and select the Cluster object of the cluster you want to manage.

Select the box next to the resource whose Start, Failover, or Failback modes you want to view or edit, then click the Details link.

Click the Policies tab.

(Conditional) Select the Resource Follows Master check box if you want to ensure that the resource runs only on the master node in the cluster.

If the master node in the cluster fails, the resource fails over to whichever node becomes the master.

(Conditional) Select the Ignore Quorum check box if you don’t want the cluster-wide timeout period and node number limit enforced.

The quorum default values were set when you installed OES Cluster Services. You can change the quorum default values by accessing the properties page for the Cluster object.

Selecting this box ensures that the resource is launched immediately on any server in the Assigned Nodes list as soon as any server in the list is brought online.

Specify the Start, Failover, and Failback modes for this resource.

The default for both Start and Failover modes is AUTO, and the default for Failback mode is DISABLE.

Continue with View or Edit NetStorage Resource Server Assignments, or if you are creating a new cluster resource, click Next, then continue with Configuring NetStorage with OES Cluster Services.

In iManager, click Clusters, then click Cluster Options.

Browse to locate and select the Cluster object of the cluster you want to manage.

Select the box next to the resource whose preferred node list you want to view or edit, then click the Details link.

Click the Preferred Nodes tab.

View the current NetStorage resource server assignments and, if necessary, click the right-arrow or left-arrow button to assign or unassign servers to the resource.

The Assigned Nodes list should contain only servers where you have installed and configured NetStorage.

View the order of the NetStorage resource server assignments and, if necessary, click the up-arrow and down-arrow buttons to change the preferred failover order of the servers assigned to the resource or volume.

Click Apply to save node assignment changes.