cluster

[Anjaneyulu]

Hi,

How can I findout the my server is the as part of the cluster?

[Prashanth Waugh · Accepted solution]

Hi,

U can check using
#cmviewcl

or
ps -ef | grep cmcld

Regards
Prashnat

[Yashwant]

run following command

cmviewcl -v


cmviewcl -v command shows status for the cluster

[Johnson Punniyalingam]

# cmviewcl

# cmviewcl -v --> verbose output which gives detail report of the Cluster

# ps -ef |grep cmcld --> cluster deamon process

Thanks,
Johnson

[Anjaneyulu]

I ran "ps -ef|grep cmcld". There is no processer running.

I want to know one thing What is the difference between cluster and normal server.

I want to know about LUN disks. what are the advantage of LUN disks?

[Prashanth Waugh]

Hi,
A Serviceguard cluster is a networked grouping of HP9000 or HP Integrity servers (this
host systems are called â nodesâ ) having sufficient redundancy of software and hardware
to avoid a single point of failure (SPOF) and service disruption.

Reagrds
Prashant

[Prashanth Waugh]

Hi ,

At storage level
lun means of bunch of physical disk.
physical disks are grouped togeter using raid technology. but server point of view we can treat as a physical volume (PV)

Regards
Prashant

[Johnson Punniyalingam]

I ran "ps -ef|grep cmcld". There is no processer running.
>>>(It means you server not part of Cluster)<<<

I want to know one thing What is the difference between cluster

two or more server join to gether form a Cluster

1. why join --> to avoid any SPOF -> Single point of Failures,

(example "you have Database Server running and you buisness is very critcal and you d'not offered any down-time for your buisness) so we can step a Cluster "Server"

and normal server.

(Its normal ,like standalone Server / indepentant Server,

I want to know about LUN disks.

>>(Collection / Groups of Pshyical Volume / Harddisk" form a LUN,

what are the advantage of LUN disks?
1. Use for RAID technologies
2. better I/O permformance
3. Realiable - LUN Disks
4. Can avoid Many SPOF -- like disk failures , Controller failures, but still you can have data access to Alternative disk


Thanks,
Johnson

[ARCHITECT_1]

hi


#cmviewcl -v ---- view running cluster

#ps -ef |grep -i cmcld -checking cluster deamon