https://www.ibm.com/support/pages/how-setup-sea-failover-load-sharing-configuration

Create a new file, in the padmin 's home directory:

[root@vios1]/home/padmin# cat .profile_vios
## Add this variable to .profile
# echo "export ENV=/home/padmin/.profile_vios" >> /home/padmin/.profile

export EXTENDED_HISTORY=ON
export EDITOR=/usr/bin/vi
export HOST="$(/usr/bin/uname -n)"
export PATH=$PATH:/usr/ios/cli

alias aix="ioscli oem_setup_env"
alias history='fc -t'
alias ll='ls -la'

if [ "$(whoami)" != "root" ]; then
        export PS1="[$(whoami)@$(/usr/bin/hostname)]\$PWD$ "
else
        export PS1="[$(whoami)@$(/usr/bin/hostname)]\$PWD# "
fi
set -o vi

# If real TTY then allows BACKSPACE
if [ $(/usr/bin/tty | awk '{print $1}' | grep -q '/dev/' ; echo $?) -eq 0 ]
then
  /usr/bin/stty erase ^?
fi

pcmpathq ()
{
pcmpath query device | egrep  "SERIAL|DEVICE" | sed '/DEV/{x;p;x;}' | sed 's/DEV#://g' | sed 's/DEVICE NAME://g' | awk '{print $2}' | sed '/^$/d' | while read word
do
  if [ $(echo $word | grep hdisk > /dev/null 2>&1;echo $?) -eq 0 ]
  then
    hd=$word
  else
    echo $hd";\c"
    echo $word
  fi
done
}

Add the following lines to .profile from padmin user:

[root@vios1]/home/padmin# cat .profile

....At the end

export ENV=/home/padmin/.profile_vios

Add the following lines to /etc/profile:

[root@vios1]/home/padmin# cat /etc/profile
....
HOSTNAME=$(/usr/bin/hostname)
PS1="[\$LOGNAME@\$HOSTNAME]\$PWD# "
export PS1

EDITOR=/usr/bin/vi
export EDITOR

export EXTENDED_HISTORY=ON

alias ll='ls -lsa'

export ENV=/home/padmin/.profile_vios

trap 1 2 3

• script to create an mksysb

Create a filesystem /mksysb

Create a scripts directory, for example /home/scripts with a bin and log directory into. 
Change the owner: chown -R padmin /mksysb /home/scripts
Create a con job as padmin user (5 * * * 0 /home/scripts/bin/mksysb.sh > /dev/null 2>&1)
Create the script mksysb.sh and make it executable

#!/bin/ksh
#====================================================================
#@(#) Create an mksysb for a VIOS on a local filesystem
# Please add into the file /etc/exclude.rootvg the /mksysb/
# and create a specific filesystem /mksysb

export PATH=$PATH:/usr/bin      # needed for user padmin
sn=$(basename $0 | cut -d. -f1)
logpath=/home/scripts/log
logname=$logpath/$sn.log
errname=$logpath/$sn.err
mksysbpath=/mksysb
mksysbfile="$mksysbpath/$(hostname).mksysb"
dest="test@yahoo.com"

main () {
date "+%d-%m-%Y %H:%M"

/usr/ios/cli/ioscli backupios -file $mksysbfile -mksysb -nomedialib 1> $logname 2> $errname
if (( $? != 0 ))
then
      mailx -s "backupios in error on host $(hostname)"  "$dest" < $errname
fi
}

echo `date`" : Begin of "$sn" "$(hostname)"\n" > $logname
main > $logname 2>&1
echo "\n"`date`" : End of "$sn" "$(hostname) >> $logname

• Save the VIOS map (command : viosbr)

# viosbr -backup -file $(hostname -s) -frequency weekly -numfiles 2

As padmin user user the viosbr that put an entry into root crontab to save the VIOS maps, network config… very usefull. A file will be generate into /home/padmin/cfgbackups/

To apply IBM best practice on a VIOS, use:

[padmin@vios1]/home/padmin$ rules -o list
[padmin@vios1]/home/padmin$ rulescfgset 

To disable this notification at login on VIOS:

chdev –l viosrules0 –a motd=no

A new command : rules, has appear in latest VIOS versions (>2.4), you can use it to check the recommended values for each device parameter, and apply best values:

[padmin@vios1]/home/padmin$ rules -o diff -s -d
devParam.adapter.vdevice.IBM,l-lan:min_buf_tiny device=adapter/vdevice/IBM,l-lan                 512 | 4096
devParam.adapter.vdevice.IBM,l-lan:max_buf_small device=adapter/vdevice/IBM,l-lan               2048 | 4096
devParam.adapter.vdevice.IBM,l-lan:min_buf_small device=adapter/vdevice/IBM,l-lan                512 | 4096

FORCE apply
[padmin@vios1]/home/padmin$ rules -o deploy -d

Default rules are stored into :

/usr/ios/cfg/emc_clar_rules.xml
/usr/ios/cfg/emc_invista_rules.xml
/usr/ios/cfg/emc_mclar_rules.xml
/usr/ios/cfg/emc_minvista_rules.xml
/usr/ios/cfg/emc_msymm_rules.xml
/usr/ios/cfg/emc_power_rules.xml
/usr/ios/cfg/emc_symm_rules.xml
/usr/ios/cfg/vios_default_rules.xml

Other scripts:

/root/scripts/change_devices_param.sh -f
/root/scripts/customize_aix.sh -f
/root/scripts/check_security.sh 

Other settings to change:

chdev -l fcs0 -a max_npivs=255 -P

Firtst install yum, and add the following packages:

# yum -y install bash lsof coreutils logrotate sed 

Rebuild RPM database

# updtvpkg

Useful for latest upgrade (faster) Remove Java7

installp -u Java7.jre Java7.sdk
installp -u Java7_64.jre Java7_64.sdk

for i in $(lslpp -Lc | grep openssh.msg. | grep -v en_US | cut -d':' -f2)
do
installp -u $i
done

for i in $(lslpp -Lc | grep "ios.cli.man." | grep -v en_US | cut -d':' -f2)
do
installp -u $i
done

for i in $(lslpp -Lc | grep "bos.msg." | grep -v en_US | cut -d':' -f2)
do
installp -u $i
done

for i in $(lslpp -Lc | grep "bos.loc.iso." | grep -v en_US | cut -d':' -f2)
do
installp -u $i
done

for i in $(lslpp -Lc | grep "bos.iconv." | grep -v en_US | egrep -v "bos.iconv.com|bos.iconv.iso|bos.iconv.ucs.com|bos.iconv.ucs.pc" | grep -v en_US | cut -d':' -f2)
do
installp -u $i
done

for i in $(lslpp -Lc | grep "bos.loc.com." | grep -v en_US | egrep -v "bos.loc.com.utf" | cut -d':' -f2)
do
installp -u $i
done