PRIMECLUSTER Installation and Administration Guide4.6 Cloud Services

15.3 Presetting

1. Enable the firewall.

   Make sure that "firewalld" is enabled.

   # systemctl is-enabled firewalld

   If it is disabled, enable it.

   # systemctl start firewalld
   # systemctl enable firewalld

   In addition, set the firewall according to "14.3.2.1 Firewalls Applied to the Cluster Node."

2. Set NTP.

   Make sure to set NTP when building the cluster to synchronize the time of each node in the cluster system.

   Set NTP before installing PRIMECLUSTER.

3. Disable the ACPI power management on the OS.

   1. Edit the following GRUB2 file on all nodes, and add the setting to disable the ACPI power management on the OS ("acpi=off") to the item GRUB_CMDLINE_LINUX.

      Example)

      # vi /etc/default/grub
      GRUB_TIMEOUT=5
      GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"
      GRUB_DEFAULT=saved
      GRUB_DISABLE_SUBMENU=true
      GRUB_TERMINAL_OUTPUT="console"
      GRUB_CMDLINE_LINUX="crashkernel=auto spectre_v2=retpoline rd.lvm.lv=rhel/root rd.lvm.lv=rhel/swap rhgb quiet acpi=off"
      GRUB_DISABLE_RECOVERY="true"

   2. Rebuild the grub.cfg file on all nodes.

      • In a BIOS based environment

        # grub2-mkconfig -o /boot/grub2/grub.cfg

      • In a UEFI based environment

        # grub2-mkconfig -o /boot/efi/EFI/redhat/grub.cfg

   3. Restart all nodes.

   4. Make sure that "acpi=off" is added in the /proc/cmdline file on all nodes.

      Example)

      # cat /proc/cmdline
      BOOT_IMAGE=/vmlinuz-3.10.0-1127.el7.x86_64 root=/dev/mapper/rhel-root ro crashkernel=auto spectre_v2=retpoline rd.lvm.lv=rhel/root rd.lvm.lv=rhel/swap rhgb quiet LANG=ja_JP.UTF-8 acpi=off