VCS Points

Service Group: Collection of dependent Resources
Resource: Anything that the end user requires
Resource Type: Collection of the resources with same type
Agents: To manage the Resource Types (Start,Stop and Monitor)
Service Group Online: Child Resource to Parent Resource
Service Group Offline: Parent Resource to Child Resource

LLT Files
/etc/llthosts
/etc/llttab

GAB Files:
/etc/gabtab

Manipulating Service Groups:
1. hagrp -offline AppSG -sys S1 -localclus --> Offline the AppSG only in S1 system (node)
2. hagrp -offline OracleSG -any --> Offline the OracleSG in all the systems
3. hagrp -online AppSG -sys S2 -localclus --> Online the AppSG in node S2
4. hagrp -switch AppSG -to S1  -->  AppSG will be moved to node S1

Manipulating Resources:
1. hares -offline Oralistener -sys S3  -->  Bring offline the Oralistener resource in node S3
2. hares -online ipres -sys S2  ->  Bring online the ipres resource in node S2

Handling VCS services:
haconf -dump -makero --> sync the RAM's main.cf with hardisk's main.cf and make the status as Readonly

hastop -all --> Stop the application and cluster

hastop -all -force --> Application will be continue running but the cluster service has been stopped
hastop -local --> stop the cluster service in local node

Useful VCS Commands

SERVICE GROUPS AND RESOURCE OPERATIONS:
Configuring service groups
hagrp –add|-delete|-online|-offline group_name

Modifying resources
hares –add|-delete res_name type group
hares –online|-offline res_name –sys system_name

Modifying agents
haagent –start|-stop agent_name –sys system_name

BASIC CONFIGURATION OPERATIONS:
Service Goups
hagrp -modify group_name attribute_name value
hagrp –list group_name
hagrp –value attribute_name

Resources
hares -modify res_name attribute_name value
hares -link res_name res_name


Agents
haagent -display agent_name –sys system_name
hatype –modify

VCS ENGINE OPERATIONS:
Starting had
hastart –force|–stale system_name
hasys –force system_name

Stopping had
hastop –local|-all|-force|-evacuate
hastop –sys system_name

Adding Users
hauser –add user_name

STATUS AND VERIFICATION:
Group Status/Verification
hagrp -display group_name|–state|–resource group_name

Resources Status/Verification
hares -display res_name
hares –list
hares -probe res_name –sys system_name

Agents Status/Verification
haagent –list
haagent -display agent_name –sys system_name
ps –ef|grep agent_name

VCS Status
hastatus –group
LLT Status/Verification
lltconfig –a list
lltstat|lltshow|lltdump

GAB Status/Verification
gabconfig –a
gabdiskhb –l

COMMUNICATION:
Starting and Stopping LLT
lltconfig -U
lltconfig -c
lltconfig -a list

Starting and Stopping GAB
gabconfig –c –n #seed number (eg: gabconfig -c -n 2)
gabconfig –U

Administering Group Services
hagrp –clear|-flush|-switch group_name –sys system_name

Administering Resources
hares –clear|-probe res_name –sys system_name

Administering Agents
haagent -list
haagent -display agent_name –sys system_name

Verify Configuration
hacf –verify