VMware and Red Hat bring Red Hat OpenShift to…

Wicked announcement from VMware and Red Hat…

VMware and Red Hat bring Red Hat OpenShift to…

Today at Red Hat Summit, VMware and Red Hat announced mutual support for OpenShift 3.11 on VMware software-defined data center (SDDC) technologies, along with a mutually hosted reference architecture that details integration of all core VMware SDDC components—VMware vSAN, NSX-T and vSphere—with Red Hat OpenShift. In addition, we also plan to release a VMware Validated …


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Searching file content using GREP

A nice and easy way to search files for specific content in the files using GREP.

grep -rnw '/path/to/somewhere/' -e 'pattern'
  • -r or -R is recursive,
  • -n is line number, and
  • -w stands for match the whole word.
  • -l (lower-case L) can be added to just give the file name of matching files.

Along with these, --exclude--include--exclude-dir flags could be used for efficient searching:

  • This will only search through those files which have .c or .h extensions:
    grep --include=\*.{c,h} -rnw '/path/to/somewhere/' -e "pattern"
    
  • This will exclude searching all the files ending with .o extension:
    grep --exclude=*.o -rnw '/path/to/somewhere/' -e "pattern"
    
  • For directories it’s possible to exclude a particular directory(ies) through --exclude-dirparameter. For example, this will exclude the dirs dir1/, dir2/ and all of them matching *.dst/:
    grep --exclude-dir={dir1,dir2,*.dst} -rnw '/path/to/somewhere/' -e "pattern"
    

For more options check man grep.

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Configuring additional ETH interfaces in CentOS

Assuming you already have an ETH0 configured and working, log in at the console and configure it just like a normal RHEL/CentOS nic configuration:

  1. cp /etc/sysconfig/network-scripts/ifcfg-eth0 /etc/sysconfig/network-scripts/ifcfg-eth1
  2. vim /etc/sysconfig/network-scripts/ifcfg-eth1
    1. Update the ETH # to the next in line.  (ETH0 to ETH1…)
    2. Update the correct IP & Subnet
    3. :wq
  3. service network restart
  4. run ifconfig to ensure the settings have taken effect
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