| TheProf_ | Good morning. I hope someone can help with with a sudden crisis! Today is the day I'm switching our network to the new Edubuntu 11.04 server. I did the testing last week and all was well. Today when I came in and turned on the server I can't get the dhcpd server to start! | 12:37 |
|---|---|---|
| TheProf_ | Status of ISC DHCP server: dhcpd is not running | 12:37 |
| alkisg | And if you try to start it? sudo service isc-dhcp-something start ? | 12:38 |
| TheProf_ | Yup - let me post that now | 12:38 |
| TheProf_ | It fails and asks me to check syslog. Syslog says: | 12:38 |
| TheProf_ | Wrote 1 leases to leases file. No subnet declaration for Internet_0 (192.168.1.106). | 12:39 |
| TheProf_ | ** Ignoring requests on Internet_0. If this is not what | 12:39 |
| TheProf_ | you want, please write a subnet declaration | 12:39 |
| TheProf_ | in your dhcpd.conf file for the network segment | 12:39 |
| TheProf_ | to which interface Internet_0 is attached. ** | 12:39 |
| TheProf_ | This is a standard 2-NIC server with an LTSP_1 (eth1) and Internet_0 (eth0) NICs | 12:40 |
| TheProf_ | one more line in syslog: Not configured to listen on any interfaces! | 12:40 |
| alkisg | If your run `sudo dpkg-reconfigure isc-dhcp-something`, do you see an interfaces declaration? | 12:40 |
| TheProf_ | alkisg, I will try that now. | 12:41 |
| * alkisg doesn't know the exact name, he's still on 10.04 :D | 12:41 | |
| TheProf_ | there are three options for -something: client, common, server? | 12:41 |
| TheProf_ | server I presume? | 12:41 |
| alkisg | server, yeah | 12:43 |
| TheProf_ | alkisg, it asks me for which NIC to listen on -- if I put eth1 it fails, and if I put the alias LTSP_1 it also fails | 12:44 |
| TheProf_ | hmm | 12:44 |
| alkisg | TheProf_: don't put any nic there at all | 12:44 |
| alkisg | That's why I told you that command, to delete any entries you might have put there, which would break your dhcpd.conf | 12:45 |
| alkisg | Once you've erased it, let's move on | 12:45 |
| TheProf_ | oh my mistake - I misunderstood. | 12:45 |
| TheProf_ | OK I'll leave it blank | 12:46 |
| TheProf_ | alkisg, I've re-run the command and left the NIC blank, erasing all that was there. | 12:46 |
| alkisg | Good. And still dhcpd not starting, with the same message? | 12:47 |
| TheProf_ | Correct. It says starting failed. I'm checking syslog nw | 12:47 |
| TheProf_ | now. | 12:47 |
| TheProf_ | alkisg, there is one more line in syslog now after the same previous error | 12:48 |
| TheProf_ | [ 1027.738797] type=1400 audit(1315831665.095:30): apparmor="STATUS" operation="profile_replace" name="/usr/sbin/dhcpd" pid=3190 comm="apparmor_parser" | 12:48 |
| alkisg | TheProf_: now, put the output of these to pastebin: | 12:48 |
| alkisg | ip -oneline -family inet addr show | 12:49 |
| alkisg | cat /etc/ltsp/dhcpd.conf | 12:49 |
| TheProf_ | is there a pastebin for this channel? | 12:52 |
| TheProf_ | !pastebin | 12:52 |
| ubottu | For posting multi-line texts into the channel, please use http://paste.ubuntu.com | To post !screenshots use http://imagebin.org/?page=add | !pastebinit to paste directly from command line | Make sure you give us the URL for your paste - see also the channel topic. | 12:52 |
| TheProf_ | there it is. | 12:52 |
| TheProf_ | alkisg, http://paste.ubuntu.com/687603/ | 12:53 |
| TheProf_ | Also I recall one change I made: /etc/udev/rules.d$ cat 70-persistent-net.rules changed the eth1 and eth0 to LTSP_1 and Internet_0 | 12:54 |
| TheProf_ | In order to be able to tell them apart. | 12:54 |
| TheProf_ | Where it says "NAME=" | 12:55 |
| alkisg | TheProf_: wow... you named your interfaces LTSP_1 and internet_0? :D | 13:01 |
| alkisg | That's what network-manager is for | 13:01 |
| alkisg | To give you human names, so that you don't have to modify the internal names... | 13:01 |
| alkisg | Anyway, the problem is that you don't have an ip address in your LTSP_1 interface | 13:01 |
| alkisg | Because you changed it, but you didn't update /etc/network/interfaces | 13:02 |
| alkisg | So either put it back to ethX, or update your /etc/network/interfaces file | 13:02 |
| alkisg | (I propose the first one) | 13:02 |
| TheProf_ | alkisg, It's that bad that I renamed them eh? | 13:03 |
| TheProf_ | I just kept getting confused which NIC is which, hence the human name with the eth_number at the end. | 13:03 |
| TheProf_ | And I had read other threads on the mailing list that network manager would conflict with LTSP and shouldn't be used. hence my actions. | 13:03 |
| TheProf_ | OK I will change them back. | 13:04 |
| TheProf_ | Do I need to reboot to activate the change or can I just restart a specific service? | 13:05 |
| alkisg | try: sudo service network-manager stop, and networking stop, and then start them | 13:06 |
| alkisg | But nah better restart | 13:06 |
| alkisg | You'd need to fire udev rules too | 13:06 |
| TheProf_ | alright - I'm on that same machine now so I will return. | 13:06 |
| alkisg | Better? | 13:09 |
| TheProf_ | Yes indeed! | 13:09 |
| TheProf_ | alkisg, looks like we're up! | 13:10 |
| TheProf_ | alkisg, thank you very much! | 13:10 |
| alkisg | You're welcome | 13:11 |
| TheProf_ | I will use the network manager to rename the interfaces as you recommended | 13:11 |
| alkisg | You need to be careful there | 13:11 |
| alkisg | You need to delete the eth* entries from /etc/network/interfaces, and create system connections for them from network-manager | 13:12 |
| alkisg | Note what you change so that you can easily revert, and don't do it while you have people using your server | 13:12 |
| TheProf_ | alkisg, alright I'll probably just put a post-it note with which NIC is which | 13:19 |
| alkisg | Hehe | 13:19 |
| alkisg | You can change them to ethi (internet) and ethl (ltsp) if you want, but remember to update /etc/network/interfaces too | 13:19 |
| TheProf_ | Awesome thanks. | 13:23 |
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