IRC log for #gllug on 20091006

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01:30.42lampuser_hey dis
01:30.44lampuser_u there
01:30.52lampuser_I got a question
01:31.07Mohanlampuser_: hi
01:36.36lampuser_hey mohan
01:36.39lampuser_ur awake still
01:36.43lampuser_what's up
01:36.49lampuser_did u friend ring u at all
01:37.27lampuser_mohan this is londonmet
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06:17.01ChoHagVery cool wooden clock: http://www.youtube.com/watch?v=QMX1syA6R84
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08:32.57antiphaseHe's got wood
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11:22.24dick_turpinbilarh: You're back then?
11:27.42halisnarf
12:14.57bilarhsnarf snarf
12:15.07bilarhdick_turpin: couldn't keep me away from you, baby
12:17.22dick_turpinEveryone missed you
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12:22.37bilarhyou just want me as a punch bag
12:29.21dick_turpinbilarh: No just the 'old bag' that you are :-)
12:42.23cpufreak_anyone here going to be in paris this weekend?
12:54.28dick_turpincpufreak_: Only if you take me :-)
12:54.35cpufreak_no
12:54.40cpufreak_but I can get you free entry to Showcase
12:55.27dick_turpincpufreak_: Hm bilarh could pay my train fare he's filthy rich
13:04.32*** join/#gllug murray_ (n=murray@78.32.149.140)
13:08.19bilarhdick_turpin: do you need two seats, fatty?
13:09.04murray_Hi.  Trying to progmatically update my ~/.ssh/known_hosts file when I can obtain the remote servers host key fingerprint via an out-of-band channel.  Specifically, want to automate setup of an ec2 instance and I can get the ec2 host key fingerprint via ec2-get-console-output ... but can't figure out what I need to do get that into the known_hosts format so that future ssh connections with (a) check the host key, and (b) not prompt for manual confirmation the
13:09.04murray_time.  Any pointers?
13:09.42murray_^future connections *will* (a) check the host ....
13:09.59dick_turpinbilarh: Me? Fat? Do you need to borrow my glasses wobble bottom?
13:10.02wethrinLook at the format of known_hosts
13:10.22wethrin$hostname,$IP $ssh-key-type $ssh_key
13:12.20bilarhdick_turpin: no need to be rude :(
13:12.43bilarhfinishes off his chunky kit kat
13:12.54bilarhkit kat + coffee == divine
13:13.28murray_wethrin: I did look there, but what I'm seeing is stuff like "|1|99CdeN...wO82m1KTw=|sF3jR8D65d5iWrdd8ConhR4dR+0= ssh-rsa AAAAB3NzaC1y.....==".  Failing to see how I get the $IP into that format, or how I get from the key fingerprint (6e:7b:46:6e:28:2a:0b:4f: ....) into the format that known_hosts has
13:14.01bilarhi was just going to say... openssh stores loads of stuff
13:14.11dick_turpinbilarh: Yeah? And? The 14lb of cream cakes next to the kit kat + coffee?
13:14.20bilarhdick_turpin: skin cream
13:14.32murray_I have the fingerprint, but not the host key itself (unless I do have it, but I don't know where I have it ;) )
13:14.58bilarhmurray: i might be barking up the wrong tree, but how about looking into non openssh ssh clients - they might not store the extra stuff
13:15.15bilarhor does it specifically need to be open source?
13:16.04dick_turpinbilarh: bilarh AKA Mr Creosote http://www.youtube.com/watch?v=BlK62rjQWLk
13:16.10murray_checks this is #gllug ;) bilarh: doesn't *have* to be openssh, but i'd much prefer if it was .... is this really such an odd thing to do?
13:18.18wethrinshouldn't be particularly odd
13:18.57wethrinIf you know the hostname, it's easy to get the IP address
13:19.14bilarhmurray how about an expect wrapper around the ssh client, so that it knows to answer "yes"? :)
13:19.33murray_wethrin: yes, I have the IP, except that my known_hosts looks more like some hash of the ip, not the actual IP itself (ubuntu, 9.04, openssh)
13:20.00wethrinOkay, here's mine: (OpenBSD, openssh)
13:20.21wethrinleo,81.187.66.235 ssh-rsa AAAA....ssh key continues
13:20.22bilarhwethrin: ap, ap, ap.... version? :P
13:20.55murray_bilarh: I could just disable the host key checks, but that sort seems to defeat the purpose ;)  My next idea was to (1) ssh, grab the output, parse the host key, then check against what I know it should be, and if that is okay, then ssh again with host key checks disabled ... which ought to then auto-add to known_hosts ... but this seems rather round-about?
13:21.20wethrinOr just type 'yes' :)
13:21.35wethrinUmbongo shouldn't be doing silly things with known_hosts
13:21.39murray_but I'm trying to automate it ;)
13:21.44wethrinthat's not to say it *doesn't*, only that it shouldn't
13:21.53murray_wethrin: here's a line from my known hosts, they are all similar:
13:22.05murray_|1|V/LFwn..../HvZdHhSqrxpU8=|Ol8lQ0m2lxHv1/MKGiRsYYCk3MU= ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAIEA3JxYZCldFAe2YH2UXlwKUXF2OGMP7Zw568+czpwPm/ry4KviBKO0G3vRRiuiJC4/dBbkUJQ6lWQPpWxsTidDJzvYepS3owXPHm/9Z5zq6XdCGKGTGB7A3QKGKpUSCdfayIbyFoLJ3o4lChNPZB3lz+eUU...ScM=
13:22.06bilarhwarning for the changed IP scenario
13:22.25bilarhmd5sum of the ip?
13:22.28wethrinThat's weird. That looks like it hashes the hostname/IP address
13:22.40wethrinDoesn't quite look like an md5sum. But it's worth seeing
13:22.51murray_wethrin: plus I have the key *fingerprint*, not the actual key
13:24.36wethrinecho yes ¦ ssh
13:24.56bilarhmurray: hang on a sec... you get the fingerprint from your external file, or the public key?
13:25.09bilarhs/file/program/
13:26.34murray_bilarh: via another channel - the ec2 api tools let you grab the console output, and the host key *fingerprint* is listed there ... getting the console output is securely done via other (unrelated) keypairs ...
13:29.35bilarhok...
13:29.44bilarhso in that case, you'll have to write something that checks the output of ssh
13:29.54bilarhotherwise, how will you get the public key to add into the known_hosts
13:30.14bilarhor is it the finger print that goes into known_hosts as the last column?
13:32.00murray_hmm, this outputs something a lot more like what I'm expecting: "ssh-keygen -l -f ~/.ssh/known_hosts"
13:32.30murray_specifically: key length, fingerprint, hostname (or some kinda hash of)
13:40.10murray_ahh, /etc/ssh/ssh_config has "HashKnownHosts yes", so that explains part of it
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16:31.32penthiefAny tech meets on tonight?
16:32.29wethrinNo. But there's a London.pm social on Thursday
16:33.14penthiefOK, thanks
16:34.33penthiefThere's a google calendar for tech events in Birmingham. I can't find one for London.
16:51.08Ch0HagOh fucking marvellous.
16:51.18Ch0Hag$job[-1] has ceased trading and disappeared.
16:51.22wethrinloverly
16:51.25wethrinRight. Currytime.
16:51.39Ch0HagAnd I need a reference ASAP to start working.
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17:59.16Mohanpaste your pxelinux.cfg/default file contents, ls -R /pxeboot, ls -ldh /pxeboot and /nfsmount point in pastie.org site
17:59.32Mohanoops wrong window
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18:11.13resuDaedevening all
18:11.39Armand|LappyHi
18:12.43resuDaedanybody around the city centre and up for a pint?
18:12.57resuDaedis bored in his hotel room
18:14.39Armand|LappyI'm too far out for that.. I'm near Heathrow.
18:15.15resuDaed:-) I'm down on a course and on call so sort of stuck in the city
18:16.39Armand|Lappysucks..
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20:49.31londonmet050yo Dis
20:49.35londonmet050where u been
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22:04.42[Discordian]Evening
22:06.09MohanNight
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