Creating a VIO LPAR 

 

 

AIX - User Administration - Part 4 

AIX - User Administration - Part 3

AIX - User Administration - Part 3

AIX - User Administration - Part 2

AIX - User Administration - Part 2

Free AIX Video Training -- Some Video

AIX - User Administration - Part I  
 

 

 

 

 

Not able to submit cron jobs in AIX

1.     User was not able to submit cron jobs in AIX.

a.       I have resolved this issue as below.

b.       /var/adm/cron/cron.allow  -- to allow user to enable cron job submission.

c.       /var/adm/cron/cron.deny   -- to disallow user to cron job submission.

d.       If you want to enable job submission for user add his user name in cron.allow , to disallow user to cron job submission add his name in cron.deny file. Root can do it.

e.       Both files were ok then what was the issue?

f.       User was not able to add cron entries as it’s “deamon” attribute was set to false.

g.       I have changed it to TRUE.

h.       And User was happy and appreciated me for this.

dtem:@:/var/adm/cron: lsuser oracle

oracle id=219 pgrp=dba groups=dba,oracle,vectus,release,released,2release,btchs5 home=/usr/local/oracle shell=/usr/bin/ksh gecos=dtem Oracle user login=true su=true rlogin=true daemon=false admin=false sugroups=ALL admgroups= tpath=nosak ttys=ALL expires=0 auth1=SYSTEM auth2=NONE umask=27 registry=files SYSTEM=compat logintimes= loginretries=5 pwdwarntime=7 account_locked=false minage=0 maxage=4 maxexpired=-1 minalpha=2 minother=2 mindiff=2 maxrepeats=4 minlen=8 histexpire=52 histsize=12 pwdchecks= dictionlist= fsize=-1 cpu=-1 data=262144 stack=65536 core=2097151 rss=131072 nofiles=2000 time_last_login=1249279890 time_last_unsuccessful_login=1269238723 tty_last_login=/dev/pts/2 tty_last_unsuccessful_login=ftp host_last_login=35.101.8.66 host_last_unsuccessful_login=::ffff:35.248.120.16 unsuccessful_login_count=10 roles=

Changed it to true but how ?

dtem:@:/var/adm/cron: lsuser oracle

oracle id=219 pgrp=dba groups=dba,oracle,vectus,release,released,2release,btchs5 home=/usr/local/oracle shell=/usr/bin/ksh gecos=dtem Oracle user login=true su=true rlogin=true daemon=true admin=false sugroups=ALL admgroups= tpath=nosak ttys=ALL expires=0 auth1=SYSTEM auth2=NONE umask=27 registry=files SYSTEM=compat logintimes= loginretries=5 pwdwarntime=7 account_locked=false minage=0 maxage=4 maxexpired=-1 minalpha=2 minother=2 mindiff=2 maxrepeats=4 minlen=8 histexpire=52 histsize=12 pwdchecks= dictionlist= fsize=-1 cpu=-1 data=262144 stack=65536 core=2097151 rss=131072 nofiles=2000 time_last_login=1249279890 time_last_unsuccessful_login=1269238723 tty_last_login=/dev/pts/2 tty_last_unsuccessful_login=ftp host_last_login=35.101.8.66 host_last_unsuccessful_login=::ffff:35.248.120.16 unsuccessful_login_count=10 roles=

#lsuser oracle

#chuser daemon=true oracle

#lsuser oracle

Free Online Aix Training - Some links

Learn more about AIX
AIX & UNIX developerWorks zone
http://www-128.ibm.com/developerworks/aix


PowerAIX.org mit indischer User Group
http://www.poweraix.org/groups?groupid=5




Other useful Websites
Support for IBM System p servers
http://www-03.ibm.com/servers/eserver/support/unixservers


Technical Database for AIX
http://www14.software.ibm.com/webapp/set2/srchBroker/views/srchBroker.jsp


Redbooks domain for IBM System p
http://www.redbooks.ibm.com/portals/UNIX


Virtual Loaner Program
http://www.ibm.com/servers/enable/site/vlp




Whitepapers
Performance tuning UNIX systems
http://www-128.ibm.com/developerworks/eserver/library/au-unix-niceprocesses.html


Basic UNIX filesystem operations
http://www-128.ibm.com/developerworks/aix/library/au-unix-readdir.html


AIX 5L service strategy and best practices
http://www-03.ibm.com/servers/eserver/support/unixservers/aix_service_strategy.html


Hardware Management Console (HMC)
http://www-03.ibm.com/servers/eserver/support/unixservers/hmc_best_practices.html


High Availability on IBM System p servers. Considerations and sample architectures
http://www-03.ibm.com/servers/eserver/support/unixservers/arch_ha_systemp5.html


IBM System p servers in Production environments. Sample architectures and considerations
http://www-03.ibm.com/servers/eserver/support/unixservers/arch_prod_systemp5.html


IBM System p Firmware and Microcode. Service Strategies and Best Practices
http://www-03.ibm.com/servers/eserver/support/unixservers/arch_firmware_Systemp5.html


Redpapers
System p5 Quad-Core Module: Technical Overview & Introduction
Length: 10 pages
http://www.redbooks.ibm.com/redpapers/abstracts/redp4150.html


Redbooks
IBM System p5 Approaches to 24x7 Availability Including AIX 5L
http://www.redbooks.ibm.com/Redbooks.nsf/RedbookAbstracts/sg247196.html?Open


IBM AIX 5L Reference for HP-UX System Administrators
http://www.redbooks.ibm.com/abstracts/sg246767.html?Open


AIX Reference for Sun Solaris Administrators
http://www.redbooks.ibm.com/abstracts/sg246584.html?Open


Integrating AIX into Heterogenous LDAP Environments
http://www.redbooks.ibm.com/abstracts/sg247165.html?Open


Advanced POWER Virtualization on IBM System p5
http://www.redbooks.ibm.com/Redbooks.nsf/RedbookAbstracts/sg247940.html?OpenDocument


Problem Solving and Troubleshooting in AIX 5L
http://www.redbooks.ibm.com/Redbooks.nsf/RedbookAbstracts/sg245496.html?OpenDocument


AIX 5L Practical Performance Tools and Tuning Guide
http://www.redbooks.ibm.com/Redbooks.nsf/RedbookAbstracts/sg246478.html?OpenDocument


AIX 5L "From Strength to Strength"
http://www-03.ibm.com/servers/aix/os/aixs2s.pdf


Technical Services
System p Lab Services has the expert skills to assist in delivering AIX-based solutions across multiple pSeries platforms. With access to Systems Development Lab skills, we can provide consultation, planning, installation, configuration, migration, performance analysis and tuning, and training on the latest IBM Systems Group technologies. https://www-03.ibm.com/servers/eserver/services/pseriesservices.html

AIX interview Questions and answers

1)       What is mean by AIX?(AIX interview Questions and answers)

a)      AIX means advanced interactive executive. IBM has invented AIX which is   nothing but the advanced UNIX.

2)      How to reset Password in AIX? (AIX interview Questions and answers)

a)      Log in as root or admin user.

b)      Use passwd command to reset the password.

c)      #passwd user_name

d)      This will ask you

e)      New password:

f)      Enter new password and confirm again.

g)      Password change completed.

3)      How to set password to non expiry in AIX? (AIX interview Questions and answers)

a)      Log in as root or admin user.

b)      Use pwdadm –C username command to set non expiry passwd.

c)      # pwdadm –C username

4)      How to create User in aix? (AIX interview Questions and answers)

a)      Log in as root or admin user.

b)      Use smitty mkuser .

c)      User name is only mandatory field.

d)      Enter user name and press enter.

e)      If you see command run OK. You have created user.

5)      How to list user attributes? (AIX interview Questions and answers)

a)      Log in as root or admin user.

b)       Use lsuser  command to list user attributes.

c)      Eg.# lsuser user_name

d)      Above command list all attributes of user_name.

BASIC AIX LEARNING

What to do after MCA,MCM,MSC,BSC,BCS and any graduate or Post graduate Course. Not getting job in IT after MCA, MCM, MSC,BSC or BCS. Come and join me to learn AIX.

How to become AIX administrator?

First I will mention here those things which are necessary to become AIX admin.

1. Are you having 12+3 or more education in any field?
2. Do you know anything about UNIX?
3. Do know anything about Linux?
4. Do you know anything about windows?
5. Do you know anything about computer?

If you say yes to 1st and 2nd or 3rd or 4rh or 5th your correct person to become AIX admin.

First thing you should know about me is that I am not your English teacher! I am here to mention some good things which will help you to become AIX admin.

Strong Desire:

Yes it's true if you don’t know anything about UNIX (which is not really a rocket science) you should work hard with consistency.

Learning new things like Language or Technology need strong desire and continuous practice.

If you are working and want to switch the job as AIX administrator this is really not going to be easy but yes if you will give one hour a day I am sure that within 4 month you will be a good AIX administrator.

POWER Machine for Practice:

You need RS600/POWER machine to practice (which is not easy to manage).There are some people who are providing access to AIX machine trough internet (You may want to Google on this). If you don’t have AIX machine still you want to be a AIX administrator.

I will recommend you to read this blog on daily basis. I will try to make you aware of every situation which I am dealing with. You never know you will get a job on the basis of your theoretical knowledge and you can start with AIX.

Read 1 hour per day:

Reading is the best practice to increase your knowledge base and defiantly you will gain something better which you always wanted. Google on AIX daily, find out some good blogs and read them on daily basis. Don’t try to jump on Advanced AIX before you complete the basic AIX stuff.

            "If you think you can or you can't your are right"

AIX questions and Answers

1         How do i know my H/W is 64 bit or 32 bits?à bootinfo –y will show you the answer.

2        How do I know my kernel is 64 bit or 32 bits? àbootinfo –k

3        How to activate quorum of vg ? à # chvg -Qy VGname

4        How to disable quorum of vg ? à # chvg -Qn VGname

5        How to Check quorum stat of vg ? à #lsvg VGname | grep QUORUM