Configuring the kernel

Describes how to configure the kernel.

1. To configure the kernel, run the following command as user root on the database and application servers:

   # /var/install/sbin/system_configure

   On Solaris, the system_configure command must be run on the global zone.

2. Restart the server by using the appropriate commands:
   

   # /usr/sbin/shutdown -i6 -g0 -y

   This command updates the /etc/system file and backs up the original file as /etc/system.backup.IBM.<datestamp>

   

   # shutdown -r now

   This command updates the /etc/sysctl.conf file and backs up the original file as /etc/original_sysctl.conf.

   

   # shutdown -Fr

3. Disable the firewall by using these commands:

   Determine whether the firewall is enabled.

   For RHEL 7.x:

   • Check status:

     systemctl status firewalld
     

   • Stop the firewall:

     service firewalld stop

   • Start the firewall:

     service firewalld start