Host Name Processing - Filters and Aliases
APTARE IT Analytics takes a two-pass approach to processing hosts. See Load Host Alias in the technical documentaion for the description of the utility to set up host aliases.
Pass 1: Filtering Out Characters
Specific characters can be filtered from the host name. Character sequences are stored in the database table: apt_domain_alias_filter
During Pass 1, the host name is compared to the character strings in the filter table.
• Only the suffix can be filtered—that is, trailing characters
• The filter must be at least 2 characters in length
Pass 2: Checking for Aliases
After filtering, the apt_object_alias table is checked for aliases, looking for a direct match. Update this table with your host name aliases.
• Wildcards are not supported
• This is a one-for-one check. A lookup is performed with the host name and if an alias is found, the alias is substituted for the host name.
Note: Even if filtering is not required, this second pass still looks for aliases.
Example 1:
The following example demonstrates how host processing and filtering works:
1. Pass 1 - Host name (myserver_nbu.mycompany.com) is compared to filter string: _nbu
2. After filtering, the host name that remains is: myserver.mycompany.com
3. Pass 2 - If there was an alias set up for myserver.mycompany.com as mymachine, then mymachine is used as the host name.
Example 2:
Filter = nb1
Input host name = anb1bcdnb1
Output host name = anb1bcd