Difference between revisions of "DNS"
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==Server Configuration== | ==Server Configuration== | ||
The related RPMs installed on einstein are: | The related RPMs installed on einstein are: | ||
| − | ; bind : includes DNS server, named | + | ; bind.i386 : includes DNS server, named |
| − | ; bind-utils : utilities for querying DNS servers about host information | + | ; bind-utils.i386 : utilities for querying DNS servers about host information |
| − | ; bind-libs : libraries used by the bind server and utils package | + | ; bind-libs.i386 : libraries used by the bind server and utils package |
| − | ; caching-nameserver : config files for a simple caching nameserver | + | ; caching-nameserver.i386 : config files for a simple caching nameserver |
* [http://www.redhat.com/magazine/025nov06/features/dns/ more info] | * [http://www.redhat.com/magazine/025nov06/features/dns/ more info] | ||
* [http://www.redhat.com/docs/manuals/enterprise/RHEL-5-manual/Deployment_Guide-en-US/ch-bind.html RHEL 5 docs] | * [http://www.redhat.com/docs/manuals/enterprise/RHEL-5-manual/Deployment_Guide-en-US/ch-bind.html RHEL 5 docs] | ||
| + | |||
==Client Configuration== | ==Client Configuration== | ||
The important config files are ''/etc/host.conf'', ''/etc/hosts'', and ''/etc/resolv.conf''. The information in these files can also be safely editied via the graphical ''system-config-network'' program. | The important config files are ''/etc/host.conf'', ''/etc/hosts'', and ''/etc/resolv.conf''. The information in these files can also be safely editied via the graphical ''system-config-network'' program. | ||
Revision as of 13:57, 30 July 2007
Domain Name Servers are how clients are able to get automatic hostname-to-IP-address resolution. Since all servers and clients on our network must be set up with static IP addresses, the settings for DNS are very important for getting communication to function properly. Currently, einstein and roentgen are set up as DNS servers.
Server Configuration
The related RPMs installed on einstein are:
- bind.i386
- includes DNS server, named
- bind-utils.i386
- utilities for querying DNS servers about host information
- bind-libs.i386
- libraries used by the bind server and utils package
- caching-nameserver.i386
- config files for a simple caching nameserver
Client Configuration
The important config files are /etc/host.conf, /etc/hosts, and /etc/resolv.conf. The information in these files can also be safely editied via the graphical system-config-network program.
- /etc/host.conf
- Defines the oder in which the client will search for hostname resolution. This typically contains only
order hosts,bind, which means to first check the "hosts" file, then try bind to a DNS server and get the answer there. - /etc/hosts
- Contains a list of IP addresses and their associated hostnames. This typically constains info for localhost, einstein, and the machine's own hostname(s).
- /etc/resolv.conf
- Contains the subnet to search and a list of DNS servers' IP addresses. This typically contains "farm.physics.unh.edu" along with einstein and roentgen's IP addresses.
