TYPES OF CLUSTERS
Active-passive
Active-active
Concurrent multiactive
SERVICE IP
It acts as a alias ip
BOOT IP
Original ip on the
interface
PERSISTENT IP
Used for
administration purpose
RG POLICIES
Startup
Fail over
Fall back
IP ADDRESS TAKEOVER
Ipat via aliasing
Ipat via replacement
CLUSTER FILESETS
Mentioned in other
place
C-SPOC
Provides facility for
performing common cluster admin tasks from any node with in cluster
VG ,LV,FS CREATION
Smitty c-spoc
VG TYPES
Nonconcurrent
Concurrent
Enhanced concurrent
CLUSTER SHUTDOWN TYPES
Graceful
Graceful with takeover
Force
RG STATES
Online
Offline
Releasing
Acquiring
Resource group types
Cascading
Rotating
Concurrent
CLUSTER LOG FILES
Hacmp.out
Cluster.log
Cluster.cspoc
Clverify.log
Clcomd.log
CLUSTER DEMONS
clcomdES
clinfoES
clstrmgrES
ctrmc
Dms:
It is kernel extension which alts the
node when enter into the hung state,that extends beyond a certain time limit.
It enables the another node in the cluster to acquire the hung node resource in
a orderly fashion
Reasons:
·
Clstrmgr
may be starved of cpu
·
Excessive
i/o traffic on a disk
·
Excessive
tcpip traffic over on a interface
Dare:
Using this we can change the cluster
configuration dynamically
Can:
·
We
can add/remove node
·
We
can add/remove interface
·
We
can add/removbe network
Can’t
·
Changing
the cluster name
·
Changing
cluster nodename
·
Changing
rg name
·
Changing
apps server name
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