====== AIX Upgrade, postinstall actions ======

===== Before upgrade =====
Save your ssh key from /etc/ssh directory

===== After upgrade =====

=== environment ===
Check /etc/environment:
  * change TZ to Europe/Belgium (reboot required)
  * update PATH if java paths is 14, then set it to 5, or 6_64

=== disks path and settings ===
Update the path setting with the script **/home/scripts/bin/change_disk_param.sh -f** and reboot if needed (check the output)

=== inittab ===
Check /etc/inittab, to remove unused entries:
<code>
for i in pconsole xmdaily webserverstart sniinst atmsvcd mkatmpvc
do
  rmitab $i
done
</code>

=== sendmail ===
Copy the optimized /etc/sendmail.cf from nimsrv, because it's modified during upgrade:
<code>scp -p /etc/sendmail.cf labotest:/etc/mail</code>
The sendmail.cf file must contain the following Smart Relay Host (DS):
<cli prompt="#">
[root@safewatchh]/root# grep DSsmt /etc/sendmail.cf
DSsmtp.be.dom.com
</cli>

=== inetd.conf ===
Optimize the /etc/inetd.conf to have less entries as possible, the following must be commented: ntalk, xmquery, wsmserver

=== rc.tcpip ===
Optimize the /etc/rc.tcpip to have less entries as possible, minimum is portmap and xntpd, and optionally inetd, sendmail

=== SSH config ===
Change the SSH config file, to listen on IPV4 only: /etc/ssh/sshd_config
<code>
Port 22
Protocol 2
#AddressFamily any
ListenAddress 0.0.0.0
#ListenAddress ::
</code>

=== crontabs ===
For user esaadmin, comment the line:
<code>0 3 * * 0 /usr/esa/sbin/esa_awareness</code>

For user root, remove the following lines:
<code>
55 23 * * * /var/perf/pm/bin/pmcfg >/dev/null 2>&1      #Enable PM Data Collection
59 23 * * * /var/perf/pm/bin/pmcfg -T >/dev/null 2>&1   #Enable PM Data Transmission
</code>

=== Additional packages ===
Install additional packages if not installed:
  * Java6_64.sdk

=== Update old packages ===
Finish the upgrade if needed, and upgrade additional non AIX software:
  * To check which filesets are not at right AIX level: <code>instfix -ci | grep :-:</code>

=== Filesystems used space ===
Check filesystem space

=== Check User and Group ===
Check if all files for user and groups are consistent, and automatically correct errors:
<code>pwdck -y ALL</code>
<code>grpck -y ALL</code>

=== Only after AIX migration ===
  * Copy again the /etc/motd from nimsrv
  * Remove files and directories used for migration into / directory (.SPOT .image* image* lpp_name liblpp.a bosinst.data /root/.rhost ...)
  * check the number of process per user: lsattr -El sys0 -a maxuproc , if less than 2048, change it with: chdev -l sys0 -a maxuproc=2048