How to configure XVFB in AIX Environment??

Issue: We are facing concurrent request running continuously not completed issue on live server.

Cause: Due to VNCSERVER got hanged.

Solution: To resolve it we have installed XVFB Server which is the alternative for vncserver.
so we can kill the vncserver process before installation of XVFB.

Resolve this issue by Download & Install below RPMS:
X11.vfb
OpenGL.OpenGL_X.dev
Pre Req RPM PKG for OpenGL.OpenGL_X.dev
-rw-r-----    1 root     system      1402880 Sep 14 14:25 OpenGL.OpenGL_X.adt
-rw-r-----    1 root     system     21670912 Sep 14 14:25 OpenGL.OpenGL_X.dev
-rw-r-----    1 root     system     35701760 Sep 14 14:25 OpenGL.OpenGL_X.rte
-rw-r-----    1 root     system      3738624 Sep 14 14:25 OpenGL.OpenGL_X.tools

Step 1: Installtation Process by root User.
# installp -agcd . X11.vfb

# installp -agcd . OpenGL.OpenGL_X.dev

After installtion check DISPLAY

# export DISPLAY=erpprodappl:0.0
# xclock
Xlib: connection to "erpprodappl:0.0" refused by server
Xlib: Invalid MIT-MAGIC-COOKIE-1 key
Error: Can't open display: erpprodappl:0.0
# hostname
appnode2
# export DISPLAY=172.16.1.22:0.0
# xclock
Error: Can't open display: 172.16.1.22:0.0

Step 2: Run Below command to start XVFB Server.
# /usr/lpp/X11/bin/xinit /usr/lpp/X11/bin/mwm -- :0 -vfb -force -x abx -x dbe -x GLX &
[1]     10813502
#
:0
# xhost + 172.16.1.22
172.16.1.22 being added to access control list

Step 3: check X server running status.
# ps -ef|grep vfb OR  ps -ef|grep X11
    root 10617054 10813502   0 14:34:41  pts/0  0:00 /usr/lpp/X11/bin/X -cc 4 -x abx -x dbe -x GLX -D /usr/lib/X11/rgb :0 -vfb -force -x abx -x dbe -x GLX
    root 10813502  8519794   0 14:34:41  pts/0  0:00 /usr/lpp/X11/bin/xinit /usr/lpp/X11/bin/mwm -- :0 -vfb -force -x abx -x dbe -x GLX

Note: I hope  resolve avobe issue after doing this activity.

How to start the Cluster in AIX Operating System

First of all we check the resource status in AIX OS clutering via below command.
Step1 - for checking resource group on which node

/usr/es/sbin/cluster/utilities/clRGinfo


test again

-----------------------------------------------------------------------------
Group Name     State                            Node
-----------------------------------------------------------------------------
DBRG           OFFLINE                      dbnode2
                      ONLINE                        dbnode1


http://www.unixmantra.com/2013/04/aix-powerha-hacmp-commands.html

Step2 - How to list the cluster manager state
lssrc -ls clstrmgrES

>> Cluster manager states

ST_NOT_CONFIGURED Node never started
ST_INIT Node configured but down - not  running
ST_STABLE Node up and running
ST_RP_RUNNING
ST_JOINING
ST_BARRIER
ST_CBARRIER
ST_VOTING
ST_RP_FAILED Node with event error

     
if ST_INIT Node configured but down - not  running then run below command.

step3 - run on down node.

smitty clstart


step4 - move the cluster from node 1 to node 2

 /usr/es/sbin/cluster/utilities/clRGmove -g DBRG -n dbnode2 -m

step5 - Confirm if the steps are successful

/usr/es/sbin/cluster/utilities/clRGinfo