Set SELinux to permissive, editing /etc/selinux/config.
$ sudo yum install kernel-headers gcc-c++ cpp gcc pam.i686 compat-libstdc++-33
Create a db2 user:
$ sudo useradd db2 $ sudo passwd db2
Change to db2 user. If you run db2prereqcheck utility you will receive a this message: The db2prereqcheck utility determined that the current platform is not supported by the following version: “9.8.0.2”. You can ignore it if you are using CentOS.
$ ./db2_install
[Unit] Description=Starts db2. [Service] Type=forking User=db2 ExecStart=/bin/bash -c "source /home/db2/sqllib/db2profile ; /home/db2/sqllib/adm/db2start" ExecStop=/bin/bash -c "source /home/db2/sqllib/db2profile ; /home/db2/sqllib/adm/db2stop" [Install] WantedBy=multi-user.target
If you have more databases:
[Unit] Description=Starts db2. [Service] Type=forking User=db2inst1 ExecStart=/bin/bash -c "source /home/db2inst1/sqllib/db2profile ; /home/db2inst1/sqllib/adm/db2start" ExecStartPost=/bin/bash -c "source /home/db2inst1/sqllib/db2profile; /home/db2inst1/sqllib/bin/db2 activate database APPCNTR ; /home/db2inst1/sqllib/bin/db2 activate database MFPDATA" ExecStop=/bin/bash -c "source /home/db2inst1/sqllib/db2profile ; /home/db2inst1/sqllib/bin/db2 deactivate database MFPDATA" ExecStop=/bin/bash -c "source /home/db2inst1/sqllib/db2profile ; /home/db2inst1/sqllib/bin/db2 deactivate database APPCNTR" ExecStop=/bin/bash -c "source /home/db2inst1/sqllib/db2profile ; /home/db2inst1/sqllib/adm/db2stop" [Install] WantedBy=multi-user.target