Proxy & Phantom Resources in Veritas Cluster

In this document, we are going to see how to configure Veritas proxy and phantom.

Let’s suppose if we are using more than one service group on cluster and it’s all using same NIC then we can use proxy and phantom on that.

Proxy Resources

Generally for OnOff resources you use dependencies and for resources with "None" operations you use Proxy - let me explain further.

An IP has "OnOff" operations - you online it and offline it and a NIC has "None" operations - you don't online or offline it, but it is required to be there for your application to work, so VCS just monitors it.  A proxy just copies state of resource it is proxying - it does NOT offline or online the resource it is proxying so it is suitable for NIC, but not IP.

Also if 2 applications share the same IP, then it is better to put the resources all into one service group and use resource dependencies to make both applications depend on the IP as both applications will move as one unit from one server to another as they cannot co-exist on different servers if there share the same IP.

You can use a Proxy resource to allow multiple service groups to monitor the same network interfaces. This reduces the network traffic that results from having multiple NIC resources in different service groups monitor the same interface.

The Proxy resource mirrors the status of another resource in a different service group. The required attribute, TargetResName, is the name of the resource whose status is reflected by the Proxy resource.

TargetSysName is an optional attribute specifies the name of the system on which the target resource status is monitored. If no system is specified, the local system is used as the target system.

Example for Proxy Resource:

Proxy PreProd_proxy (

Critical = 0

TargetResName = PreProd_MultiNICB

)

Phantom Resource

The phantom resource is used to report the actual status of a service group that consists of only persistent resources. A service group shows an online status only when all of its nonpersistent resources are online. Therefore, if a service group has only persistent resources (network interface), VCS considers the group offline, even if the persistent resources are running properly. By adding a phantom resource, the status of the service group is shown as online.

Basic rules of a service group is that you must be able to offline it and online it, and this is not possible if you don't have any OnOff resources in the group, in which case you could add a dummy "FileOnOff" resource, but the Phantom resource was designed for this.

Also note, never try to manually offline or online the Phantom resource - always offline or online the group

List of NIC Resource in the 4-node cluster

hares -list Type=NIC

appnic boxnet1

appnic boxnet2

csgnic boxnet1

csgnic boxnet2

csgnic boxnet3

csgnic boxnet4

netnic boxnet1

netnic boxnet2

netnic boxnet3

netnic boxnet4

nfsnic boxnet1

nfsnic boxnet2

oranic boxnet1

oranic boxnet2

Configuring a common parallel network service group named netsg

# haconf -makerw

# hagrp -add netsg

# hagrp -modify netsg SystemList boxnet1 0 boxnet2 1 boxnet3 2 boxnet4 3

# hagrp -modify netsg AutoStartlist boxnet1 boxnet2 boxnet3 boxnet4

# hagrp -modify netsg Parallel 1

Display the service group attributes for the netsg service group

hagrp -display netsg | more

#Group Attribute System Value

netsg AdministratorGroups global

netsg Administrators global

netsg Authority global 0

netsg AutoFailOver global 1

netsg AutoRestart global 1

netsg AutoStart global 1

netsg AutoStartIfPartial global 1

netsg AutoStartList global boxnet1 boxnet2 boxnet3 boxnet4

netsg AutoStartPolicy global Order

netsg ClusterFailOverPolicy global Manual

...

netsg Parallel global 1

...

netsg SystemList global boxnet1 0 boxnet2 1

boxnet3 2 boxnet4 3

...

Save the configuration File:

haconf –dump

Add a resource of type NIC named netnic to the netsg service group

hares -add netnic NIC netsg

hares -modify netnic Device eth0

hares -modify netnic Critical 0

Display the resource attributes values for the netnic resource

hares -display netnic | more

#Resource Attribute System Value

netnic Group global netsg

netnic Type global NIC

netnic AutoStart global 1

netnic Critical global 0

netnic Enabled global 0

...

netnic Device global eth0

Enable the netnic resource and verify that it is enabled

hares -modify netnic Enabled 1

hares -value netnic Enabled

1

hares -state netnic

#Resource Attribute System Value

netnic State boxnet1 ONLINE

netnic State boxnet2 ONLINE

netnic State boxnet3 ONLINE

netnic State boxnet4 ONLINE

Display the state of the netsg service group

hagrp -state netsg

#Group Attribute System Value

netsg State boxnet1 |OFFLINE|

netsg State boxnet2 |OFFLINE|

netsg State boxnet3 |OFFLINE|

netsg State boxnet4 |OFFLINE|

Save the configuration File:

haconf -dump

Add a resource of type Phantom named netphantom to the netsg service group.

hares -add netphantom Phantom netsg

hares -modify netphantom Critical 0

Display the resource attribute values for the netphantom resource

hares -display netphantom | more

#Resource Attribute System Value

netphantom Group global netsg

netphantom Type global Phantom

netphantom AutoStart global 1

netphantom Critical global 0

netphantom Enabled global 0

hares -modify netphantom Enabled 1

hares -value netphantom Enabled

1

hares -state netphantom

#Resource Attribute System Value

netphantom State boxnet1 ONLINE

netphantom State boxnet2 ONLINE

netphantom State boxnet3 ONLINE

netphantom State boxnet4 ONLINE

Display the state of the netsg

hagrp -state netsg

#Group Attribute System Value

netsg State boxnet1 |ONLINE|

netsg State boxnet2 |ONLINE|

netsg State boxnet3 |ONLINE|

netsg State boxnet4 |ONLINE|

Save the configuration File:

haconf -dump

Example of Configuring Proxy Resources:

Let’s use netnic resources, Replacing NIC resources with Proxy resources in other Service Group.

Identify the names of the resources of type NIC that are configured.

hares -list Type=NIC

appnic boxnet1

appnic boxnet2

csgnic boxnet1

csgnic boxnet2

csgnic boxnet3

csgnic boxnet4

netnic boxnet1

netnic boxnet2

netnic boxnet3

netnic boxnet4

nfsnic boxnet1

nfsnic boxnet2

oranic boxnet1

oranic boxnet2

Ignoring the resource of type NIC named netnic, list the resource dependencies associated with the listed resources of type NIC

hares -dep appnic csgnic nfsnic oranic

#Group Parent Child

ClusterService notifier csgnic

ClusterService webip csgnic

appsg appip appnic

nfssg nfsip nfsnic

orasg oraip oranic

Replace the resource of type NIC named appnic with a resource of type Proxy named appproxy using the following information.

Set the Critical attribute to 0 (zero).

Set the TargetResName attribute to netnic.

Set Enabled to 1 (one).

Link to the appip resource.

hares -delete appnic

hares -add appproxy Proxy appsg

hares -modify appproxy Critical 0

hares -modify appproxy TargetResName netnic

hares -display appproxy | more

#Resource Attribute System Value

appproxy Group global appsg

appproxy Type global Proxy

appproxy AutoStart global 1

appproxy Critical global 0

appproxy Enabled global 0

...

appproxy TargetResName global netnic

...

hares -modify appproxy Enabled 1

hares -value appproxy Enabled

1

hares -state appproxy

#Resource Attribute System Value

appproxy State boxnet1 ONLINE

appproxy State boxnet2 ONLINE

hares -link appip appproxy

hares -dep | grep appproxy

appsg appip appproxy

Replace the resource of type NIC named csgnic with a resource of type Proxy named csgproxy using the following information.

Set the Critical attribute to 0 (zero).

Set the TargetResName attribute to netnic.

Set Enabled to 1 (one).

Link to the notifier and webip resources.

hares -delete csgnic

hares -add csgproxy Proxy ClusterService

hares -modify csgproxy Critical 0

hares -modify csgproxy TargeResName netnic

hares -display csgproxy | more

#Resource Attribute System Value

csgproxy Group global ClusterService

csgproxy Type global Proxy

csgproxy AutoStart global 1

csgproxy Critical global 0

csgproxy Enabled global 0

...

csgproxy TargetResName global netnic

...

hares -modify csgproxy Enabled 1

hares -value csgproxy Enabled

1

hares -state csgproxy

#Resource Attribute System Value

csgproxy State boxnet1 ONLINE

csgproxy State boxnet2 ONLINE

csgproxy State boxnet3 ONLINE

csgproxy State boxnet4 ONLINE

hares -link webip csgproxy

hares -link notifier csgproxy

hares -dep | grep csgproxy

ClusterService notifier csgproxy

ClusterService webip csgproxy

Replace the resource of type NIC named nfsnic with a resource of type Proxy named nfsproxy using the following information.

Set the Critical attribute to 0 (zero).

Set the TargetResName attribute to netnic.

Set Enabled to 1 (one).

Link to the nfsip resource.

hares -delete nfsnic

hares -add nfsproxy Proxy nfssg

hares -modify nfsproxy Critical 0

hares -modify nfsproxy TargetResName netnic

hares -display nfsproxy | more

#Resource Attribute System Value

nfsproxy Group global nfssg

nfsproxy Type global Proxy

nfsproxy AutoStart global 1

nfsproxy Critical global 0

nfsproxy Enabled global 0

...

nfsproxy TargetResName global netnic

...

hares -modify nfsproxy Enabled 1

hares -value nfsproxy Enabled

1

hares -state nfsproxy

#Resource Attribute System Value

nfsproxy State boxnet1 ONLINE

nfsproxy State boxnet2 ONLINE

hares -link nfsip nfsproxy

hares -dep | grep nfsproxy

nfssg nfsip nfsproxy

Replace the resource of type NIC named oranic with a resource of type Proxy named oraproxy using the following information.

Set the Critical attribute to 0 (zero).

Set the TargetResName attribute to netnic.

Set Enabled to 1 (one).

Link to the oraip resource.

hares -delete oranic

hares -add oraproxy Proxy orasg

hares -modify oraproxy Critical 0

hares -modify oraproxy TargetResName netnic

hares -display oraproxy | more

#Resource Attribute System Value

oraproxy Group global orasg

oraproxy Type global Proxy

oraproxy AutoStart global 1

oraproxy Critical global 0

oraproxy Enabled global 0

...

oraproxy TargetResName global netnic

...

hares -modify oraproxy Enabled 1

hares -value oraproxy Enabled

1

hares -state oraproxy

#Resource Attribute System Value

oraproxy State boxnet1 ONLINE

oraproxy State boxnet2 ONLINE

hares -link oraip oraproxy

hares -dep | grep oraproxy

orasg oraip oraproxy

Save and close the VCS configuration.

haconf -dump -makero

Thank you for Reading,

For Reading other article, visit to “https://sites.google.com/site/unixwikis/https://sites.google.com/site/unixwikis/”