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VCS Questions Answers

1: How do check the status of VERITAS Cluster Server status ?
Ans: hastatus –sum
2.Which is the important config file for VCS and where it is located?
Ans: main.cf is the important configuration file for VCS and it is located in /etc/VRTSvcs/conf/config.
3: Which command you will use to check the syntax of the main.cf?
Ans: hacf -verify /etc/VRTSvcs/conf/config
4: How to switchover the service group in VCS?
Ans: # hagrp –switch -to SYSTEM_NAME
5: How to online the service groups in VCS?
Ans: # hagrp –online -sys SYSTEM_NAME
6: How to set the VCS configuration Read-Only?
Ans: # haconf –dump –makero
7: How to set the VCS configuration Read-Write?
Ans: # haconf -makerw
8: How to display the list of all snapshots?
Ans: # hasnap –display –list
9: How to add a user with cluster administrator/Operator access?
Ans: # hauser –add <user> -priv Administrator/Operator
10: How to add a user with group administrator/Operator access?
Ans: # hauser –add <user> -priv Administrator/Operator –group <service group>
Querying Service Groups, & Resources
11: How to display the status of a service group on a system?
Ans: # hagrp –state <service group> -sys <system>
12: How to display the resources for a specific service group?
Ans: # hagrp –resources <service group>
13: How to display the service group dependencies?
Ans: # hagrp –dep <service group>
14: How to display information about a service group on a system?
Ans: # hagrp –display <service group> -sys <system name>
15 -20 Question have been removed.
20: How to display resource dependencies?
Ans: # hares –dep <resource name>
21: How to display information about a resource?
Ans: # hares –display <resource name>
22: How to display resources of a service group?
Ans: # hares –display –group <service group>
23: How to display resources of a resource type?
Ans: # hares –display –type <resource type>
24: How to display attributes of a system?
Ans: # hares –display –sys <system name>
25: How to display all resources type?
Ans: # hatype –list
26: How to list the systems in the cluster?
Ans: # hasys –list
27: How to display information about a particular system?
Ans: # hasys –list <system name>
28: How to display information about the cluster?
Ans: # haclus –display
29: How to display the status of all service groups including resources in cluster?
Ans: # hastatus
30: How to display the status of cluster faults, including faulted service groups, systems, links and agents?
Ans: # hastatus –summary
Administering Service Group:
31: How to add a service group in a cluster?
Ans: # hagrp –add <service group>
32: How to delete a service group from a cluster?
Ans: # hagrp –delete <service group>
33: How to modify a service group attribute such as SystemList, AutoStartList, parallel etc?
Ans:
(A) How to populate the SystemList attribute of service group groupX with SystemA and B.
# hagrp –modfy groupX SystemList –add SystemA 1 SystemB 2
(B) How to populate the AutoStartList attribute of service group groupX with SystemA and B.
# hagrp –modify groupX AutoStartList –add SystemA SystemB
(C) How to define the service group as a parallel?
# hagrp –modify <service group> Parallel 1
34: How to bring a service group online?
Ans: # hagrp –online <service group> -sys <system name>
35: How to take a service group offline?
Ans: # hagrp –offline <service group> -sys <system name>
36: How to take a service group offline if all resources are probed?
Ans: # hagrp –offline <service group> -ifprobed –sys <system name>
37: How to switch a service group from one system to another system?
Ans: # hagrp –switch <service group> -to <system name>
38: How to freeze a service group?
Ans: # hagrp –freeze <service group> -persistent
39: How to unfreeze a frozen service group?
Ans: # hagrp –unfreeze <service group> -persistent
40: How to disable a service group?
Ans: # hagrp –disable <service group> -sys <system name>
41: How to enable a service group?
Ans: # hagrp –enable < service group> -sys <system name>
42: How to enable all resources in a service group?
Ans: # hagrp –enableresources <service group>
43: How to disable all resources in a service group?
Ans: # hagrp –disableresources <service group>
44: How to clear faulted, non-persistent resources in a service group?
Ans: # hagrp –clear <service group> -sys <system name>
45: How to clear resources in ADMIN_WAIT state in a service group?
Ans: # hagrp –clearadminwait <service group> -sys <system name>
46: How to flush a service group?
Ans: # hagrp –flush <service group> -sys <system name>
47: How to link a service group with another?
Ans: # hagrp –link <parent service group> <child service group> <gd_category> <gd_location> <gd_type>
gd_category = Category of group dependency (online/offline)
gd_location = The scope of dependency (local/global/remote)
gd_type = type of group dependency (soft/firm/hard)
48: How to unlink a service group with another?
Ans: # hagrp –unlink <parent service group> <child service group>
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