IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 14 October 2016 (all times are UTC)
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| 11:42 | <antares_> Hello all. I want to assign hostnames to my ltsp fat clients. AFAIK, at "normal" linux boxes it should be done at /etc/dhcp3/dhclient.conf
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| 11:42 | but inside the chroot I'm not able to found such file? How could it be done?
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| 11:58 | <Hyperbyte> antares_, hi
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| 11:59 | antares_, what do you mean with 'assigning hostnames'? Hostnames on the local machine, or DNS names?
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| 12:00 | <alkisg> antares, open lts.conf and put: [mac:address] HOSTNAME=xxx
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| 12:00 | !lts.conf
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| 12:00 | <ltsp`> lts.conf: (#1) http://manpages.ubuntu.com/lts.conf, or (#2) lts.conf manpage is available in the ltsp-docs package
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| 12:05 | <antares_> Thanks for your answers. I was referring to DNS names
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| 12:47 | <Hyperbyte> He'll be back then I guess. :-)
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| 12:47 | Or she.
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| 14:17 | <alkisg> Or, (s)he didn't even understand the question :D
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| 15:38 | <bennabiy> alkisg: Is there a way to take the image outputted from ltsp-update-image -c / and dump it to a directory to clean up and edit as a chroot?
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| 15:38 | <alkisg> bennabiy: sure, mount it somewhere and cp -a its contents
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| 15:39 | <bennabiy> will I be able to regenerate images from it with ltsp-update-image --chroot blah ?
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| 15:39 | err
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| 15:39 | --arch
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| 15:39 | <alkisg> Yes
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| 15:40 | <bennabiy> I can never remember which
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| 15:40 | great
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| 15:40 | <alkisg> Note though that some things may be missing, check in ltsp-update-image.excludes
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| 15:40 | For *example*, mysql databases (don't tell me that you don't use mysql, it's an example)
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| 15:41 | * bennabiy chuckles | |
| 15:41 | <bennabiy> but I don....
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| 15:41 | alkisg: but would it not contain what I needed to ltsp-chroot into it and then say, run apt-get
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| 15:42 | or such?
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| 15:42 | apart from perhaps a resolv.conf
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| 15:42 | <alkisg> It would function as expected, yes.
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| 15:45 | <bennabiy> alkisg: thank you
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| 15:45 | <alkisg> np
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| 15:45 | <bennabiy> alkisg: can I do this while I have a fat client running from it?
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| 15:46 | <alkisg> Sure
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| 15:46 | <bennabiy> alkisg: are they squashfs?
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| 15:47 | <alkisg> Yes. The mount -o loop,ro command automatically uses squashfs, no need to specify it
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| 15:47 | <bennabiy> ok, thank you
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| 15:51 | is there a reason to use cp -a as opposed to rsync or tar or such?
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| 15:52 | <alkisg> First of all, why use tar when you already have a squashfs image
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| 15:53 | And, I prefer cp -a to rsync because it uses saner defaults (like, symlinks, hardlinks etc)
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| 16:05 | <bennabiy> alkisg: tar is not just for compressing files, it is a general copy as well, I was just wondering if it was a preference or had performance benefits as well
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| 16:08 | <alkisg> bennabiy: why would you use tar instead of cp?
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| 16:08 | Tar is for gathering many files into one
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| 16:08 | squashfs has already all those files gathered, with their attributes and everything, and is even directly mountable, which tar isn't
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| 16:08 | *while
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| 16:09 | tar can also be used with netcat for sending files over the network; we have nbd+squashfs for that, and it's again directly mountable
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| 16:09 | I don't see any benefit at all in using tar when we already have the files in a squashfs image
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| 18:58 | <bennabiy> alkisg: why on my fat client would it remove my user from all groups etc
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| 18:58 | I cannot use virtualbox and other things which require me being in a group
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| 19:05 | <Hyperbyte> bennabiy, probably because local users on clients are created on the fly. Groups, etc, are not transferred along AFAIK.
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| 19:05 | If you want all users and groups from the server available on the client, you'd usually use something like LDAP.
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| 19:06 | <bennabiy> Hyperbyte: but all the rest of the users which are not in LDAP are there
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| 19:06 | I do use LDAP
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| 19:06 | but my user was removed from all groups
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| 19:06 | the rest are all still there
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| 19:06 | <Hyperbyte> bennabiy, sounds like the local client hasn't got his nsswitch set up properly. LTSP still creates the local user, even if you use LDAP.
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| 19:07 | But that shouldn't matter if LDAP takes precedence.
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| 19:07 | <bennabiy> Hyperbyte: I have a user which is both in LDAP and also a local account on the server
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| 19:08 | this is with ltsp-pnp setup
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| 19:28 | <Hyperbyte> bennabiy, like I said, configure your nsswitch properly.
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| 19:28 | Give LDAP priority over local accounts on the client.
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| 19:29 | <bennabiy> will do, but the ldap does not have the vboxusers etc in it
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| 19:29 | <Hyperbyte> bennabiy, also, why is the user both locally on the server and in LDAP?
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| 19:29 | bennabiy, you should have those in LDAP I think.
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| 19:29 | <bennabiy> I just checked
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| 19:30 | <Hyperbyte> Not entirely sure
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| 19:30 | <bennabiy> they never got added in LDAP
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| 19:30 | <Hyperbyte> But either way, you problem is not LTSP related.
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| 19:30 | No, but you can add them.
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| 19:30 | <bennabiy> except that ltsp removes my user from the groups
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| 19:30 | when they are present and fine on the server
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| 19:30 | <Hyperbyte> I suspect it doesn't.
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| 19:31 | It creates a local user on login, which takes precedence over LDAP, which it shouldn't.
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| 19:31 | Which you can fix with nsswitch.
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| 19:31 | Open a local terminal on the client, start debugging from there.
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| 19:31 | See if you get the LDAP user or not.
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| 19:32 | <bennabiy> I check my etc/group on the client and my user is nowhere in there, but the other users are still there
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| 21:25 | <alkisg> bennabiy: --cleanup means "remove the user accounts from the generated image, etc etc"
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| 21:25 | So if you want to keep the users, you would skip --cleanup
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| 21:25 | If you want to clone the installation, you can just re-add any users that you want
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| 21:26 | <bennabiy> only by copying the generated image into a chroot, correct?
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| 21:27 | I do not see any other way to directly edit an image generated by the pnp method
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| 21:27 | <alkisg> bennabiy: I'm not sure what you want to do
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| 21:27 | Normally, chroots and images don't have user accounts
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| 21:28 | Those come from the server dynamically at login time
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| 21:28 | <bennabiy> alkisg: so what do you do for things like vboxusers?
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| 21:28 | <alkisg> What do you mean by vbox users?
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| 21:28 | <bennabiy> it is not coming from the server, except minus my user
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| 21:28 | it is a group to allow USB support in virtualbox
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| 21:28 | generated by virtualbox
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| 21:29 | all other users except my user are still in the group
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| 21:29 | <alkisg> If the user "alkisg" is part of the group "virtualbox", then both the user and the group will be genarated at login by X01-localapps
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| 21:29 | <bennabiy> in the chroot
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| 21:29 | <alkisg> They don't need to be present in the chroot
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| 21:29 | <bennabiy> except that it is not happening in my case
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| 21:29 | <alkisg> They will be generated at login in the running client
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| 21:29 | That might be a misconfiguration or a bug
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| 21:29 | <bennabiy> sounds good, but it is not the case here
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| 21:31 | <alkisg> Are you using thin or fat clients? And, normal authentication or ldap etc?
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| 21:33 | ~$ id
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| 21:33 | uid=1001(ltsp) gid=1001(ltsp) ομάδες=1001(ltsp),129(sambashare),130(vboxusers)
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| 21:33 | It works fine here.
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| 21:33 | (default ubuntu mate 16.04 installation)
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| 21:34 | bennabiy: so it's probably an issue with your specific setup
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| 21:44 | <bennabiy> fat client
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| 21:45 | my ldap groups show up, but not my system groups
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| 21:51 | <alkisg> bennabiy: ah, if you added my latest patch about "when ldap is used, don't do anything at all about users and groups", that would explain it,
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| 21:51 | in which case, you're supposed to make vboxusers an ldap group as well
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| 21:51 | <bennabiy> ah, any good way to keep the two in sync?
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| 21:51 | <alkisg> This patch is not released yet, I don't remember if you applied it manually or not
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| 21:52 | <bennabiy> alkisg: I am not sure
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| 21:52 | <alkisg> No idea, I've never used ldap
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| 21:52 | * alkisg waves for today... 'night all | |
| 21:57 | * bennabiy waves | |
| 22:21 | <Hyperbyte> bennabiy, keeping ldap and local in sync is not possible. Make everything ldap.
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