Re: set domain name in Debian `
> On Nov 12, 2016, at 3:25 AM, Andy Smith <andy@strugglers.net> wrote:
>
> The system thinks Glenn's domain name is "slsware.dmz". Glenn wants it
> to be "slsware.org" (I think).
Correct.
> Glenn has set the host name to be "srv".
Correct.
> I am 95% confident that the reason that Glenn's system thinks the
> FQDN is "www.slsware.dmz" is because the first instance of "srv" in
> the /etc/hosts is:
>
>>> 192.168.2.203 www.slsware.dmz wsd srv
But that isn't the first; it's the fourth. A grep of the hosts file:
> root@srv:~# egrep srv /etc/hosts
> 127.0.0.1 srv.slsware.org
> 216.17.203.66 srv.slsware.org sso
> # 192.168.2.203 srv.slsware.dmz srv
> 192.168.2.203 www.slsware.dmz wsd srv
> 192.168.2.203 mail.slsware.dmz msd srv
> 192.168.2.203 ntp.slsware.dmz ntp srv
> 192.168.2.203 ns1.slsware.dmz ns1d ns1 srv
> 216.17.134.203 srv.slsware.net ssn
The first mentions of srv are at the top, both with IPs that could have been used to grab the correct domain.
It never occurred to me that something might be looking at aliases; I thought the IP address was the important thing. And the srv...dmz entry is commented out because I thought it might somehow be used.
I'll remove all mentions of srv (and lots of others to make it shorter) and see.
The hosts file is now:
> root@srv:~# cat /etc/hosts
> # /etc/hosts: This file describes a number of hostname-to-address
> #
> # This is to be sent to all hosts that need a hosts file
> # (don't really know how yet...)
> #
> # Host Database
> # localhost is used to configure the loopback interface
> # sudo cp hosts /etc ; dist `pwd`/hosts /etc all hosts
> # The following lines are desirable for IPv6 capable hosts
> # when the system is booting. Do not change this entry.
> #
> ::1 ip6-localhost ip6-loopback
> fe00::0 ip6-localnet
> ff00::0 ip6-mcastprefix
> ff02::1 ip6-allnodes
> ff02::2 ip6-allrouters
> ff02::3 ip6-allhosts
>
> 127.0.0.1 localhost localhost.localdomain lh lcl
>
> # pass I slsware.org -- all routable IPs; no NAT
> 216.17.203.64 slsware.org
> 216.17.203.65 out.slsware.org oso
> 216.17.203.66 srv.slsware.org sso
> 216.17.203.67 gobook.slsware.org gso gbo
> 216.17.203.68 unused0.slsware.org u0so
> 216.17.203.69 unused1.slsware.org u1so
> 216.17.203.70 printer.slsware.org pso
> 216.17.203.71 broadcast.slsware.org bso
>
> # misc ne'r-do-wells
> 127.0.0.2 ad.doubleclick.net
> 127.0.0.2 mmv.admob.com
The *only* mention of srv is with the right domain and the right IP.
After a reboot:
> root@srv:~# hostname
> srv
> root@srv:~# hostname -f
> hostname: Name or service not known
And just in case it's the IP:
> root@srv:~# ifconfig
> eth0 Link encap:Ethernet HWaddr 00:25:90:d5:16:34
> inet addr:216.17.203.66 Bcast:216.17.203.71 Mask:255.255.255.248
> inet6 addr: fe80::225:90ff:fed5:1634/64 Scope:Link
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:459 errors:0 dropped:0 overruns:0 frame:0
> TX packets:470 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:1000
> RX bytes:47597 (46.4 KiB) TX bytes:49637 (48.4 KiB)
> Interrupt:16 Memory:fbce0000-fbd00000
>
> eth1 Link encap:Ethernet HWaddr 00:25:90:d5:16:35
> inet addr:192.168.3.66 Bcast:192.168.3.255 Mask:255.255.255.0
> UP BROADCAST MULTICAST MTU:1500 Metric:1
> RX packets:0 errors:0 dropped:0 overruns:0 frame:0
> TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:1000
> RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
> Interrupt:17 Memory:fbde0000-fbe00000
>
> lo Link encap:Local Loopback
> inet addr:127.0.0.1 Mask:255.0.0.0
> inet6 addr: ::1/128 Scope:Host
> UP LOOPBACK RUNNING MTU:65536 Metric:1
> RX packets:68 errors:0 dropped:0 overruns:0 frame:0
> TX packets:68 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:0
> RX bytes:17189 (16.7 KiB) TX bytes:17189 (16.7 KiB)
And:
> root@srv:~# cat /proc/sys/kernel/domainname
> (none)
It doesn't give the www answer anymore; it must have been doing something (odd) with hosts. But now it claims it can't find anything.
> "hostname" returns what is in /etc/hostname (unless changed agfter
> system startup).
>
> "hostname -f" returns the part up to the first dot from whatever is
> returned by resolving "hostname" against /etc/hosts.
The 2 dots after resolving hostname, maybe? That does sound very reasonable, but it doesn't seem to be working. And how does /proc get a domainname.
--
Glenn English
--
Glenn English
Did you just click Reply?
If so, change the send
address from gmail to
ghe@slsware.net
Reply to: