Tag: linux

How do I use PuTTY with my Eclipse server?

  • Download and run putty.exe
  • Enter your server’s Host Name (or IP address)
  • Select either SSH (preferred, secure, works some AIX servers and all RHEL servers) or Telnet (insecure, works with all Eclipse servers)
  • Optionally, you may give the session a name and Save for future connections
  • Select Open to launch the telnet/ssh session
  • Enter your root login credentials

How do I perform a clean installation of Red Hat Enterprise Linux for Eclipse?

  • Boot from the Red Hat Enterprise Linux 64-bit install DVD
  • Press ENTER to launch the installer in graphical mode
  • Choose Skip when prompted to check media
  • Enter the RHEL Installation Number when prompted, or select Skip
  • Hit Next until your reach the partitioning screen:
  • Choose Create default layout and Customize
  • Set the LVM layout as below:
    • Disk/LUN 0:
      • /boot, 100 MB
      • LVM label: rootvg
        • swap, swap, sized based on the amount of system RAM:
          • <4 GB RAM = 2048 MB
          • 4-16 GB RAM = 4096 MB
          • 16-64 GB RAM = 8192 MB
          • 64-256 GB RAM = 16384 MB
        • /, root, 20480 MB
        • /esupport, 4096 MB
    • Disk/LUN 1:
      • Remove this disk from any other volume group (i.e. rootvg)
      • Leave it empty
  • Hit Next until your reach the networking screen
  • Click Edit and assign a static/manual IP address
  • Check “Manually” and assign hostname
  • Choose the appropriate time zone
  • Enter the root password
  • At the package selection screen, uncheck Virtualization (none of the options should be checked) and choose Customize later to use the default package set
  • Continue to complete the install and reboot into RHEL
  • Within the first boot wizard, accept the defaults except for:
    • Firewall: Disabled
    • SELinux: Disabled
    • Date and Time -> Network Time Protocol: Enable Network Time Protocol
    • Red Hat Network: enter your login information
  • Continue through until the end of the installation wizard
  • Log in as root

How do I redirect a printer?

There are a number of different ways by which to redirect print jobs, and the method chosen is typically personal preference.

Redirecting via /etc/hosts

Editing the “lp” hostname entry in the /etc/hosts file redirects network traffic to a new IP address, effectively re-routing print jobs.

vi /etc/hosts

Find the appropriate hostname and change the IP address. Save and quit.

Redirecting via the Print Daemon Configuration

Editing the hostname to which the print daemon connects to redirects communication to a new print server, effectively re-routing print jobs.

On Linux (command line):

vi /etc/cups/printers.conf

On Linux (GUI):

  • Open System -> Administration -> Printers
  • Select the appropriate print queue
  • Change the hostname/address contained in the Device URI field
  • Click Apply

On AIX (command line):

vi /etc/qdaemon

On AIX (smit):

smit queue
  • Change / Show Print Queue Characteristics
  • Select the appropriate queue
  • Select 1 Queue Characteristics
  • Update the HOSTNAME of remote server field
  • Save and quit

Redirecting via UV Spooler Configuration

Open the UniVerse administration interface.

  • Log in as root
cd /u2/uv
./.profile
  • Spooler -> Device Management –> Maintain Devices
  • Navigate to the  Driver field and update the driver name to reflect the new destination
  • Save and quit

Redirecting via UV Driver Files

Editing the queue name contained in each UV driver file will change the queue to which the UV spooler sends jobs, effectively re-routing print jobs.

vi /usr/spool/uv/lp1.dvr

Change the queue name to match the new destination queue. Save and quit.

How do I run diagnostics on my Dell Linux server?

Installing the Dell diagnostics utility

Locate the latest Online Diagnostic utility installer for your server:

  • Go to http://support.dell.com/
  • Select Drivers and Downloads
  • Enter your server’s service tag or model
  • Select Red Hat Enterprise Linux from the OS drop-down menu
  • From the Diagnostics category, select the Dell – Online Diagnostics Utility

For this example, we’ll use the most recent Dell Online Diagnostics installer for RHEL (dell-onlinediags-linux-2.17.0.44.tar.gz).

Download and extract to a temporary directory:

mkdir -p /esupport/diag
cd /esupport/diag
wget http://ftp.us.dell.com/diags/dell-onlinediags-linux-2.17.0.44.tar.gz
tar xzvf dell-onlinediags-linux-2.17.0.44.tar.gz

Run the installer:

cd /esupport/diag/onlinediags/
./install.sh

Accept the license agreement when prompted.

Running the Dell diagnostics utility (GUI)

The diagnostics must be run from the GUI (the local console or VNC)

/opt/dell/onlinediags/startDiags.sh

After the diagnostics console has loaded, select the appropriate hardware to test and run tests.

Running the Dell diagnostics utility (command line)

cd /opt/dell/onlinediags/oldiags/bin/
./pediags --show all

Choose one of the listed classes, for example a tape drive:

./pediags scsidevdiag --show device
./pediags scsidevdiag --run

Additional Resources: