PRIMECLUSTER Installation and Administration Guide 4.5

I.2.3 Presetting

1. Disabling Firewall

   [Red Hat Enterprise Linux 6]

   Check if iptables and ip6tables are disabled.

   # chkconfig --list iptables
   # chkconfig --list ip6tables

   If they are enabled, disable them.

   # service iptables stop
   # chkconfig iptables off
   # service ip6tables stop
   # chkconfig ip6tables off

   [Red Hat Enterprise Linux 7]

   Check if firewalld.service is disabled.

   # systemctl status firewalld.service

   If firewalld.service is enabled, disable it.

   # systemctl disable firewalld.service

2. NTP settings

   Before building the cluster, make sure to set up NTP that synchronizes the time of each node in the cluster system.

   Make these settings on the guest OS before you install PRIMECLUSTER.