17.20 - Finding All GC Servers in the Forest - Analytics Database - Teradata Vantage

Teradata Vantage™ - Analytics Database Security Administration - 17.20

Deployment
VantageCloud
VantageCore
Edition
Enterprise
IntelliFlex
VMware
Product
Analytics Database
Teradata Vantage
Release Number
17.20
Published
June 2022
Language
English (United States)
Last Update
2023-03-07
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To manage site awareness through the GC you must determine which directory servers function as GC servers, using either the dig or nslookup utility.

This task is required because each directory server in the forest may be set up as:
  • A GC server only
  • A domain server only
  • Both a GC server and a domain server
  1. Use the following command to generate a list of GC servers:
    dig +tcp -t SRV _gc._tcp.rootdomain.com
    For instructions on finding the value of root_domain, see Finding the Root Domain Name.

    The dig command produces output similar to:

    ;; global options:  printcmd
    ;; Got answer:
    ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 65377
    ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 10, AUTHORITY: 5, ADDITIONAL: 17
    
    ;; QUESTION SECTION:
    ;_gc._tcp.rootdomain.com.         IN      SRV
    
    ;; ANSWER SECTION:
    _gc._tcp.rootdomain.com.  600     IN      SRV     0 100 3268 sddiv111.DOMAIN1.COM.
    _gc._tcp.rootdomain.com.  600     IN      SRV     0 100 3268 sddiv222.DOMAIN1.COM.
    _gc._tcp.rootdomain.com.  600     IN      SRV     0 100 3268 alban333.DOMAIN1.COM.
    _gc._tcp.rootdomain.com.  600     IN      SRV     0 100 3268 china444.DOMAIN2.COM.
    _gc._tcp.rootdomain.com.  600     IN      SRV     0 100 3268 indi555.DOMAIN3.COM.
    _gc._tcp.rootdomain.com.  600     IN      SRV     0 100 3268 japa666.DOMAIN4.COM.
    _gc._tcp.rootdomain.com.  600     IN      SRV     0 100 3268 sddiv777.DOMAIN1.COM.
    
    ;; AUTHORITY SECTION:
    _tcp.rootdomain.com.      86400   IN      NS      sci222.DOMAIN1.COM.
    _tcp.rootdomain.com.      86400   IN      NS      scj333.DOMAIN1.COM.
    _tcp.rootdomain.com.      86400   IN      NS      sck444.DOMAIN1.COM.
    _tcp.rootdomain.com.      86400   IN      NS      scm555.DOMAIN1.COM.
    _tcp.rootdomain.com.      86400  IN     NS     scq666.DOMAIN1.COM.
    
    ;; ADDITIONAL SECTION:
    al777.DOMAIN1.COM. 1800 IN      A      ip_address10

    The ANSWER SECTION lists the directory servers that have GC server capabilities, and it includes the alban333.DOMAIN1.COM server used in previous tasks. Note that 3268 is the default port for GC servers.

  2. Choose a GC directory in the ANSWER SECTION to facilitate site aware authentication of users who cross domain boundaries when they log on to a Teradata Vantage system.