Menu Close

Quick tip – using regular expressions in a dynamic group

Here is a quick tip on using a regular expression when creating a group.

OpsMgr dynamic inclusion rules are case sensitive.

If I have a group that I want to contain all computers that START with “OM”…. I can use the following expression:

image

The “^” tells regex to start a new line… without this – it will search the entire computername for “OM” instead of only servers with a name that starts with “OM”.  This shows the following group membership:

image

However – this is not all my “OM” servers.  This is because when some were built, they used a lower case name.  If I change the dynamic inclusion expression to “^om” I will only see the lower case servers (the NetBIOS Computer name is lower case… not the display name as shown):

image

Ok – how do I get them ALL in the same group?

There are a couple ways.

One way is to “OR” the two regex queries:

image

Bingo!

image

Another way – courtesy of Tim Helton – is to use the regex modifier (?i:) to make it case insensitive:

image

Which yields:

image

This should make dynamic groups a bit easier.  We can expand this to add the HealthService Watcher objects, which is typical for groups that we will scope notifications to:

image

Which yields all my Windows Computers, and their Health Service Watcher components.

image

5 Comments

  1. Blake Drumm

    Regarding regular expression in general in SCOM, if you need to match multiple items, do like Kevin did above, example:

    Red Hat Exclude File System Type Expression:
    ^(xfs)|^(overlay)$

    Red Hat Exclude File System Name Expression:
    ^(\/var\/lib\/docker\/.*)|^(\/var\/lib\/mesos\/.*)$

    • Kamal

      Thanks for the update Blake.

      How to create Dynamic Group for Pattern match’s in Middle in SCOM 2012 R2

      EX : DEMFSSERV1 , XEMFSSERV2 , FEMFSSERV3

      need to take pattern matching FS as middle name in all above three fileservers . How to write expression in Dynamic Groups ?

  2. Mitra

    How to create Dynamic Group for Pattern match’s in Middle in SCOM 2012 R2

    EX : DEMFSSERV1 , XEMFSSERV2 , FEMFSSERV3

    need to take pattern matching FS in all above three esrvers . How to write expression in Dynamic Groups ?

  3. Kamal From Mumbai

    How to make suppressions with Dynamic Groups in SCOM 2012 R2 ?

    Is it required to add the Group to rule or Monitor ?

Leave a Reply

Your email address will not be published. Required fields are marked *