“The command gnome-session existed with signal 15” on CentOS 7 for FastX2

If you have an error message when you launched FastX2 client, you will see this error “The command gnome-session existed with signal 15” on CentOS 7 for FastX2.

Step 1: This error is caused by selinux on CentOS 7. Do the following /etc/selinux


Trying to use the command “setenforce 0” does not seems to be able to fix the issue.

Step 2: Remember to install GNOME Desktop

# yum groupinstall "GNOME Desktop" "Graphical Administration Tools"

Step 3: Uninstall the StarNetFastX2 and reinstall

# rpm -e StarNetFastX2
# rpm -Uvh --force StarNetFastX2-2.4.7.rhel6.x86_64.rpm



Disable FirewallD Services on CentOS 7

Do note that firewall on CentOS 7 system is enabled by default.

Step 1: To check the status of CentOS 7 FirewallD

# systemctl status firewalld.service
● firewalld.service - firewalld - dynamic firewall daemon
   Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled)
   Active: inactive (dead)
     Docs: man:firewalld(1)

The above shows that the firewalld is disabled.

Step 2: To stop the FirewallD

# systemctl stop firewalld.service

Step 3: To completely disable the firewalld service

# systemctl disable firewalld.service

Resolving “lsb_release not found” on CentOS 7

I was installing ABAQUS 2017 on CentOS 7 when I encountered an error. lsb_release is the print distribution specific information. Strangely, this issue is found on CentOS 7 distribution.

[root@node-h001 1]# ./StartGUI.sh
CurrentMediaDir initial="."
Current operating system: "Linux"
./StartGUI.sh[21]: .[31]: .: line 3: lsb_release: not found
Unknown linux release ""
exit 8

Resolving Issues

# yum install redhat-lsb-core


[root@node-h001 1]# lsb_release
LSB Version: :core-4.1-amd64:core-4.1-noarch

Pre-check before restarting the NSD Nodes

Before restarting the NSD Nodes or Quorum Manager Nodes or other critical nodes, do check the following first to ensure the file system is in the right order before restarting.

1. Make sure all three quorum nodes are active.

# mmgetstate -N quorumnodes

*If any machine is not active, do *not* proceed

2. Make sure file system is mounted on machines

# mmlsmount gpfs0

If the file system is not mounted somewhere, we should try to resolve it first.

Spectrum Scale User Group @ London (April)

There was a good and varied topics being discussed at the Spectrum Scale