Archiwa kategorii: HACMP/HA

HACMP/HA – wiele węzłów – Dynamic node priority

Dynamic node priority – jak sprawdzić status:

odin:/# lssrc -ls clstrmgrES
Current state: ST_STABLE
sccsid = "@(#)36
1.135.1.37
src/43haes/usr/sbin/cluster/hacmprd/main.C,
hacmp.pe, 51haes_r530, r5300525a 6/20/05 14:13:01"
i_local_nodeid 1, i_local_siteid 1, my_handle 2
ml_idx[1]=0
ml_idx[2]=1
ml_idx[3]=2
There are 0 events on the Ibcast queue
There are 0 events on the RM Ibcast queue
CLversion: 8
Example 2-1cluster fix level is "0"
The following timer(s) are currently active:
Current DNP values
DNP Values for NodeId - 1 NodeName - frigg
PgSpFree = 0 PvPctBusy = 0 PctTotalTimeIdle = 0.000000
DNP Values for NodeId - 2 NodeName - odin
PgSpFree = 130258 PvPctBusy = 0 PctTotalTimeIdle = 99.325169
DNP Values for NodeId - 3 NodeName - thor
PgSpFree = 0 PvPctBusy = 0 PctTotalTimeIdle = 0.000000

HACMP/HA – heartbeats – statystyki

Jak sprawdzić statystyki heartbeat -ów? Użyjmy komendy cltopinfo -m

[testlab_1:root:/:] cltopinfo -m

Interface Name      Adpater       Total Missed  Current Missed
                    Address        Heartbeats     Heartbeats
--------------------------------------------------------------
en0                192.168.1.12             0              0
en1                 172.16.0.12             0              0
en2                 172.16.1.12             0              0
rhdisk20            255.255.10.2             0              0
rhdisk30            255.255.10.3             0              0

Cluster Services Uptime:        3 days 18 hours 0 minutes

Więcej informacji o heartbeats znajdziesz wydając polecenie: lssrc -ls topsvcs

testowanie heartbeat-ów na dyskach

dhb_read -p devicename -r – receives data over diskhb network
dhb_read -p devicename -t – transmits data over diskhb network

HACMP/HA – słowniczek

HACMP – High Availability Cluster Multi-Processing
C-SPOC – Cluster Single Point of Control
RSCT – Reliable Scalable Clustering Technology
HACMP/ES – HACMP Enhanced Scalability
DNP – Dynamic node priority
DARE – dynamic automatic reconfiguration event
gsclvmd – Group Services Concurrent Logical Volume Manager daemon,

A cluster can host more than one resource group,
thus allowing for efficient use of the cluster nodes (thus
the “Multi-Processing” in HACMP).