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,
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