> If you're running DNS, they should be using that, which will serve > an FQDN. > If you're not, then /etc/hosts is what will be queried first. > ( also, before DNS is running, or if a DNS server can't be reached ) Understood. we use no DNS.
>> # Do not remove the following line, or various programs >> # that require network functionality will fail. >> 127.0.0.1 localhost.localdomain localhost > I wouldn't do that !! > I can almost guarantee that something will fail with that > partially qualified domain name ! Interesting, that is what is in the /etc/hosts file by default on the Paravel Broadcast Aplliance (Centos 5.5 i believe) > You have host names, but what domain ? Exactly my question.... > The machine should assume whatever domain is in > /etc/networks > or in > /etc/HOSTNAME > I don't seem to have those files, at least not in /etc...sooo...I still don't know what top put there. Everything seems to work though so maybe I shouldn't worry about it? > Generally, the machine won't complain, but some apps will. AS I recall I think it was sendmail complaining, but I think I saw it in another log as well.... >> also, what is this line for? >> ::1 localhost6.localdomain6 localhost6 >> it was in there from the default. > It's a syntax which some OS understand. > Depends on the OS. > Remember, Linux is NOT an OS ! > Linux is a kernel. Right. > Since I don't know your OS ( off hand ) I can't know > exactly how your machine will interpret that syntax. > Several *nix can use that type of short-hand. Centos 5.5, so it is probably then? As always, thanks, you are a wealth of information and I appreciate it. Nathaniel C. Steele Assistant Chief Engineer/Technical Director WTRM-FM / TheCrossFM On 12/19/2011 5:22 PM, Cowboy wrote: > On Monday 19 December 2011 08:53:06 am you wrote: > >> My machines are complaining about not having an FQDN. they are on a >> "private" network, we have no domain. what should I put in /etc/hosts to >> shut them up? Currently they look like this (IP's edited to protect the >> innocent): > If you're running DNS, they should be using that, which will serve > an FQDN. > If you're not, then /etc/hosts is what will be queried first. > ( also, before DNS is running, or if a DNS server can't be reached ) > > What is an FQDN ? > It is the full name of the host machine as it would resolve in DNS. > It generally consists of four parts. > the fourth part is the hostname of the machine, such as > myhost > the third part, the lower level domain, such as > myhost.example > the top level domain in which the example sub-domain exists, such as > myhost.example.com > and firstly, ( usually left off and assumed by DNS ) the root domain, > represented by the blank label after the dot after com. > ( because everything is below the root domain, and the standard allows > leaving off the domain name *if* the search is confined to within your > domain ) > In DNS, the FQDN would be > myhost.example.com. > ( note the trailing dot, followed by the blank label ) > As such, that can be one and only one machine anywhere in the universe. > The "fully" qualified name can refer to one and only one machine. > >> # Do not remove the following line, or various programs >> # that require network functionality will fail. >> 127.0.0.1 localhost.localdomain localhost > I wouldn't do that !! > I can almost guarantee that something will fail with that > partially qualified domain name ! > >> ::1 localhost6.localdomain6 localhost6 >> 10.100.x.x rdcs >> 10.100.x.x rdbs >> 10.100.x.x rdoa >> 10.100.x.x rdprod >> 10.100.x.x rdncs >> >> Apologies if this is a basic question, I've googled it but always get >> the hostname.example.com answer, that doesn't help me. > You have host names, but what domain ? > The machine should assume whatever domain is in > /etc/networks > or in > /etc/HOSTNAME > > Generally, the machine won't complain, but some apps will. > >> also, what is this line for? >> ::1 localhost6.localdomain6 localhost6 >> it was in there from the default. > It's a syntax which some OS understand. > Depends on the OS. > Remember, Linux is NOT an OS ! > Linux is a kernel. > Since I don't know your OS ( off hand ) I can't know > exactly how your machine will interpret that syntax. > Several *nix can use that type of short-hand. > _______________________________________________ Rivendell-dev mailing list Rivendell-dev@lists.rivendellaudio.org http://lists.rivendellaudio.org/mailman/listinfo/rivendell-dev
