AIX FAQ's- Part 1

Q1.How can u change IP of one node in HACMP environment ?

A- SMIT TCP/IP

Q2. How to fix if a external storage is visible to one node and not to other node in
HACMP?

A- Using chdev command I will make PVID=yes and command is chdev -l hdiskn -a PV=yes

Q3.How can u increase file system size in HACMP ?

A- Through C-SPOC

Q4.How to Fix if a VG is not Available in ODM?

A- smit importvg

Q5. What is heart beat in HACMP ?

A-heartbeat is used for health monitoring of nodes(whether or not nodes are alive)

Q6.What is disk heart beat in HACMP ?

A-

Q7.What are the basic requirement for two nodes to be configured in HACMP?

A-each node should have two NICs, hardware should be same(recommended) and OS and ML  must be same

Q8.how to check whether a node is in cluster ?

A- using ./clstat

Q9.What is the daemon for HACMP?

A- clstrmgrES, clsmuxpdES,clinfoES and clcomdES

Q10.What are the permissions in AIX ?

A- read, write,execute ,SUID,SGID, Sticky bit

Q11.How to give all permission, only to user of a file ?

A- chmod 700 filename





Q12.How to set UID ?

A- chmod u+s filename

Q13.How to set GID?

A- chmod g+s filename or dir

Q14.How to create file system on new hard disk?

A- i)extendvg vgname hdiskn

ii) SMIT mklv, iii) SMIT crfs

Q15.How to increase file system size ?

A- chfs -a size=+no. of blocks /filesystem name

Q16.How to check which file system is available on which PV?

A- First check on which LV filesystem exists,say lv00, now use command lslv -m lv00

Q17.What is command to list applied and committed software?

A- lslpp -l

Q18.By which command u can change applied state to committed state ?

A- installp -c -f software name

Q19.How to check ML level ?

A- oslevel -r

Q20.how to transfer boot image?

A- using bosboot command(eg. bosboot -a -d /dev/hdiskn)














Q21 how to replace faulty HDD ?

A-It depends on scenerio

Q22.how to check if a VG is mirrored?

A- lsvg -l vgname

Q23. How to check system configuration ?

A-prtconf

Q24.What is spooler ?.

A-a daemon

Q25 what is daemon for spooling ?

A- spooler

Q26.What is alog from where it takes info ?

A- command for seeing boot logs, takes info from var/adm/ras

Q27.Who command takes info fronm where ?

A- /etc/utmp

Q28.What are repository in ODM ?.

A- /etc/objrepos, /usr/lib/objrepos, /usr/share/lib/objrepos

Q29.how to list customized devices ?

A- lsdev -C -H

Q30.What is ODMGET ?

A- command to get information from ODM