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Operating Systems
Solaris
Specifying network configuration info
Post 302069702 by FredSmith on Tuesday 28th of March 2006 02:57:56 PM
03-28-2006
Thank you, in case anyone searches the forum for a "fix" to a similar problem, the issue was:
My server's /etc/nsswitch.conf file did not specify hosts: dns
(as discussed in:
Solaris 8 System Administrator Collection >> Solaris Naming Administration Guide >> Part VI Administering DNS >> 28. Introduction to DNS >> DNS Basics
(From the document
DNS Clients and the Resolver
To be a DNS client, a machine must run the resolver. The resolver is neither a daemon nor a single program; rather, it is a set of dynamic library routines used by applications that need to know machine names. The resolver's function is to resolve users' queries. To do that, it queries a name server, which then returns either the requested information or a referral to another server. Once the resolver is configured, a machine can request DNS service from a name server.
When a machine's /etc/nsswitch.conf file specifies hosts: dns (or any other variant that includes dns in the hosts line), the resolver libraries are automatically used. If the nsswitch.conf file specifies some other name service before dns, that name service is consulted first for host information and only if that name service does not find the host in question are the resolver libraries used.
For example, if the hosts line in the nsswitch.conf file specifies hosts: nisplus dns, the NIS+ name service will first be searched for host information. If the information is not found in NIS+, then the DNS resolver is used. Since name services such as NIS+ and NIS only contain information about hosts in their own network, the effect of a hosts:nisplus dns line in a switch file is to specify the use of NIS+ for local host information and DNS for information on remote hosts out on the Internet.
There are two kinds of DNS clients:
*
Client-only. A client-only DNS client does not run in.named; instead, it consults the resolver. The resolver knows about a list of name servers for the domain, to which queries are then directed.
*
Client-server. A client-server uses the services provided by in.named to resolve queries forwarded to it by client-machine resolvers.
The Solaris operating environment includes the dynamic library routines that make up the resolver. Solaris Naming Setup and Configuration Guide, contains instructions for setting up a host as a DNS client.
My server's /etc/nsswitch.conf file did not specify hosts: dns
(as discussed in:
Solaris 8 System Administrator Collection >> Solaris Naming Administration Guide >> Part VI Administering DNS >> 28. Introduction to DNS >> DNS Basics
(From the document
DNS Clients and the Resolver
To be a DNS client, a machine must run the resolver. The resolver is neither a daemon nor a single program; rather, it is a set of dynamic library routines used by applications that need to know machine names. The resolver's function is to resolve users' queries. To do that, it queries a name server, which then returns either the requested information or a referral to another server. Once the resolver is configured, a machine can request DNS service from a name server.
When a machine's /etc/nsswitch.conf file specifies hosts: dns (or any other variant that includes dns in the hosts line), the resolver libraries are automatically used. If the nsswitch.conf file specifies some other name service before dns, that name service is consulted first for host information and only if that name service does not find the host in question are the resolver libraries used.
For example, if the hosts line in the nsswitch.conf file specifies hosts: nisplus dns, the NIS+ name service will first be searched for host information. If the information is not found in NIS+, then the DNS resolver is used. Since name services such as NIS+ and NIS only contain information about hosts in their own network, the effect of a hosts:nisplus dns line in a switch file is to specify the use of NIS+ for local host information and DNS for information on remote hosts out on the Internet.
There are two kinds of DNS clients:
*
Client-only. A client-only DNS client does not run in.named; instead, it consults the resolver. The resolver knows about a list of name servers for the domain, to which queries are then directed.
*
Client-server. A client-server uses the services provided by in.named to resolve queries forwarded to it by client-machine resolvers.
The Solaris operating environment includes the dynamic library routines that make up the resolver. Solaris Naming Setup and Configuration Guide, contains instructions for setting up a host as a DNS client.
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LEARN ABOUT HPUX
rpc.nisd_resolv
rpc.nisd_resolv(1M) rpc.nisd_resolv(1M) NAME
rpc.nisd_resolv - DNS service daemon for NIS SYNOPSIS
file_descriptor]] transport] program_number] DESCRIPTION
is an auxiliary process which provides DNS forwarding service for NIS hosts requests. The process is started by (NIS server) when invoked with the option. It requires the file to be set up for communication with a DNS nameserver. The utility can be used to verify communica- tion with a DNS nameserver. See resolv.conf(4) and nslookup(1). Although it is not recommended, can also be started independently with the following options. Options Uses the specified file descriptor for service Runs in foreground. Uses the specified transient program number for RPC service procedure. Uses the specified transport. Operates in verbose mode. Sends output to: Operates in verbose mode. Sends output to stdout. AUTHOR
was developed by Sun Microsystems, Inc. FILES
resolver configuration file. SEE ALSO
nslookup(1), ypserv(1M), resolv.conf(4), ypfiles(4). rpc.nisd_resolv(1M)