IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 7 October 2015 (all times are UTC)
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| 02:41 | <work_alkisg> staffencasa: ubuntu in 15.04 is very broken, you'll want the daily builds ppa to use that
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| 02:42 | <work_alkisg> Although this shouldn't be what's causing the tftp issue, you'll nevertheless find 10 other critical issues that make it not working
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| 02:45 | ltsp in ubuntu 15.10 works pretty well with the greek schools ppa though
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| 02:52 | <maldridge> work_alkisg: If you were standing up a new cluster, what revision of ubuntu would you recommend
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| 02:53 | <work_alkisg> Yesterday I was setting up Ubuntu/LTSP in a school. After spending 3-4 hours I saw that the problem was the 3.13 kernel. Reverting to 3.2 (plain 12.04.1) made clients work again.
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| 02:54 | <maldridge> ok, 14.04 is very broken at the moment
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| 02:54 | <work_alkisg> (the problem being that clients hanged without any messages after 1-2 minutes)
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| 02:54 | <maldridge> thinking I should just revert
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| 02:54 | <work_alkisg> So what I'm thinking is that I need a big choice in kernels + xorgs
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| 02:54 | Only LTS releases offer that
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| 02:55 | 14.04 now has 3 different kernels and xorgs, it should be ok... (with the greek schools ppa if you're using ltsp)
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| 02:56 | gnome-keyring gets disabled though by ltsp because it produces thousands of temp lock files
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| 02:58 | <maldridge> I'm using the ppa, but not nbd
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| 02:59 | 14.04 had issues mounting the nbd volume during image generation
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| 02:59 | <work_alkisg> it's solved in the ppa
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| 02:59 | <maldridge> hm, I'll double check why the PPA wasn't given priority
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| 02:59 | <work_alkisg> and the problem with keyrings is not in / but in /home, i.e. in sshfs
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| 02:59 | <maldridge> yeah, I don't run keyrings on my networks
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| 03:00 | <work_alkisg> people don't save passwords in firefox?
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| 03:00 | *input passwords, whether they save them or not...
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| 03:01 | <maldridge> we use lastpass as an organization, so its not in the keyring
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| 03:01 | everyone uses 2FA
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| 03:01 | <work_alkisg> check if /home/users/.gnome2/keyrings exists or not
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| 03:02 | If it does, then firefox did call gnome-keyrings-daemon
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| 03:05 | <maldridge> nope, though not particularly surprising, we run firefox from an internal repo where we disable all autofill and all credential management
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| 03:06 | <work_alkisg> The location for keyrings is different in recent versions, I don't know if that affects 14.04 as well, I think maybe in .local/share/keyrings
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| 05:30 | <alkisg> !nbd-clients
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| 05:30 | <ltsp> I do not know about 'nbd-clients', but I do know about these similar topics: 'nbd-client'
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| 05:30 | <alkisg> !ltsp-clients
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| 05:30 | <ltsp> Error: "ltsp-clients" is not a valid command.
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| 05:30 | <alkisg> !clients
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| 05:30 | <ltsp> I do not know about 'clients', but I do know about these similar topics: 'fatclients', 'epoptes-fat-clients'
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| 05:30 | <alkisg> !nbd
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| 05:30 | <ltsp> I do not know about 'nbd', but I do know about these similar topics: 'disable-nbd-proxy', 'nbd-proxy', 'nbd-compression', 'quick-nbd-tests', 'nbd-client', 'nbd-server-bug', 'nbd-trusty-bug'
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| 05:30 | <alkisg> !client
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| 05:30 | <ltsp> I do not know about 'client', but I do know about these similar topics: 'fatclients', 'fatclient-printers', 'epoptes-fat-clients', 'nbd-client', 'client-list'
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| 05:31 | <alkisg> !client-list
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| 05:31 | <ltsp> client-list: to get a list of all nbd-clients (which sometimes is the same as ltsp clients), run: netstat -tn | sed -n 's/.*:10809 *\([0-9.]*\):.*/\1/p' | sort -Vu
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| 09:06 | <oldjoe> Hi Guys, please check the page http://wiki.ltsp.org/wiki/Installation there has been some gambling links added to the bottom of the page
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| 09:09 | <work_alkisg> Thank you oldjoe
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| 09:09 | Hyperbyte: we've been hacked ^
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| 09:09 | work_alkisg is now known as alkisg | |
| 09:19 | <Hyperbyte> alkisg, it's a public wiki.
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| 09:19 | We've been spammed.
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| 09:19 | But you can undo all of these edits I think.
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| 09:19 | <alkisg> Hyperbyte: do we want it to be public?
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| 09:19 | <Hyperbyte> Well you have to register.
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| 09:19 | <alkisg> Can bots register?
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| 09:19 | That wasn't manual, was it?
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| 09:19 | No captcha etc involved in the registration?
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| 09:20 | Anyway, do whatever you prefer, oh mighty web master of ltsp :)
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| 09:21 | <Hyperbyte> I'll just undo all contribs by Domtheo
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| 09:23 | And blocked account as well
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| 09:23 | Fixed.
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| 09:23 | <alkisg> Cool! :)
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| 12:44 | <UserTest> Hello, in the lts.conf is the parameter "LDM_GUESTLOGIN", that I enabled. But logging in as Guest, causes that in the panel (Ubuntu 14.04 Mate) disappears the "Shutdown" button. Any help how I can activate it?
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| 12:45 | Logged in as not Guest but "normal" or LDAP user, the "Shutdown" button is activated.
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| 13:02 | <maldridge> guest user not in the same/right groups maybe?
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| 13:42 | <UserTest> I define Guest User in the lts.conf like
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| 13:43 | [XX.XX.XX.XX.XX.XX]
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| 13:43 | LDM_GUESTLOGIN=TRUE
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| 13:43 | LDM_USERNAME=username
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| 13:43 | LDM_PASSWORD=password
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| 13:43 | <maldridge> yes, but does that username have permission to shut down the machine? I'm pretty sure mate hides that menu if the user isn't in the correct groups
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| 13:45 | <UserTest> I can login with username and password manually and then the shutdown button is activated
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| 13:46 | <maldridge> yes, because your user is in the correct groups, but your guest user isn't
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| 13:48 | <UserTest> When I defined the guest username and password in lts.conf, what I have to do to add him to correct groups?
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| 13:48 | Thanks for help
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| 13:50 | <maldridge> I'm not sure what group that is on ubuntu, might be powerdev?
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| 13:50 | logged in as you, run "groups" in a terminal and see if there's a group that looks like it has to do with power
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| 13:51 | then sudo usermod -aG <group> <user> on your guest user
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| 13:51 | <UserTest> I will do it now, thank you very much
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| 14:45 | <lbssousa> Phantomas, I've opened an issue in x11vnc github page about that problem with -grabkbd. See https://github.com/LibVNC/x11vnc/issues/18
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| 14:46 | I've also created a new branch with a x11vnc wrapper to circumvent these problems with -grabkbd and -grabptr options. See https://code.launchpad.net/~oiteam/epoptes/x11vnc-wrapper-with-alt-input-grabbing
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| 16:58 | <lbssousa> Phantomas, alkisg, in my computer lab, I didn't install epoptes-client on my server. I've just installed epoptes on server with "apt-get --no-install-recommends". Everything goes fine, except that it doesn't install socat (needed for opening terminals) and x11vnc (needed for broadcasting) automatically.
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| 16:58 | <alkisg> lbssousa: isn't that the expected behaviour with --no-recommends? :)
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| 16:59 | <lbssousa> Could you make them explicit dependencies of epoptes package?
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| 16:59 | <alkisg> Depends? why?
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| 16:59 | "recommends" afaik means "most of the functionality is there"
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| 17:00 | ...if someone doesn't want to open terminals etc, he can skip socat
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| 17:00 | vagrantc can tell us if this would be considered "depends" or "recommends"
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| 17:01 | <lbssousa> Anyway, could you make them explicit "Recommends" por epoptes package?
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| 17:01 | <vagrantc> "The `Recommends' field should list packages that would be found together with this one in all but unusual installations."
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| 17:01 | <lbssousa> So they won't be autoremoved if I remove epoptes-client from my server?
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| 17:01 | <alkisg> epoptes recommends epoptes-client which recommends socat
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| 17:02 | OK let me think...
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| 17:02 | <vagrantc> what's the use-case of epoptes installed without epoptes-client?
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| 17:02 | <alkisg> A standalone installation with no ltsp-pnp etc
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| 17:02 | <lbssousa> Yes. I don't use LTSP in my lab.
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| 17:03 | All clients are standalone ones.
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| 17:03 | <alkisg> I think what you're saying does make sense, but those 2 won't be the only recommended things that we'll need
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| 17:04 | <vagrantc> explicit recommends/depends might be appropriate rather than relying on an implicit recommends or depends from a recommended package
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| 17:05 | <alkisg> lbssousa: to work around the issue now, you can just install the packages manually (apt-get install socat etc) before removing epoptes-client
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| 17:06 | Do file a bug report about this issue
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| 17:06 | <lbssousa> alkisg: OK
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| 17:07 | Filing...
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| 17:07 | <alkisg> lbssousa: if you could also please tell us the packages that are needed, it would help
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| 17:07 | <vagrantc> lbssousa: does it cause problems to have epoptes-client installed in your environment?
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| 17:07 | <alkisg> I.e. install epoptes with no recommends, and then try all its features, and tell us "socat is needed for terminals and reverse text-based connections" etc
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| 17:07 | <lbssousa> OK
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| 17:07 | <alkisg> epoptes-client doesn't run by default when epoptes is installed in that pc
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| 17:08 | So it shouldn't be causing any issues afaik
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| 17:18 | <lbssousa> alkisg, it's true if epoptes-client is being started as a system (by root) instance, but it seems not true if it's launched as a session (by user) instance.
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| 17:19 | <alkisg> lbssousa: that is true, because we want it for the teacher to be able to monitor students connected with e.g. x2go
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| 17:20 | <lbssousa> Ah, OK.
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| 17:20 | <alkisg> And if someone doesn't want himself monitored, he can de-select it from the autostarted programs
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| 17:20 | Is that why you want to remove epoptes-client?
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| 17:23 | <lbssousa> Well, it's one reason. The other one is keeping my server installation as clean as possible, so I'm investigating what's strictly needed for epoptes server only.
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| 17:29 | <vagrantc> alkisg: is the python-central backwards compatibility still needed in epoptes?
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| 17:30 | <alkisg> vagrantc: I don't remember, I'd need to look into it...
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| 17:31 | <vagrantc> alkisg: looks like ubuntu 14.04 has dh-python, which i think is what's needed
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| 17:31 | <alkisg> We still need support for 12.04
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| 17:31 | <vagrantc> ok
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| 17:32 | two more years, then?
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| 17:32 | <alkisg> http://packages.ubuntu.com/search?keywords=dh-python
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| 17:32 | Haha, just one
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| 17:33 | <vagrantc> wow, it's been a while since i've actually used/tested epoptes
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| 17:33 | probably not since november 2013
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| 17:33 | <alkisg> (we won't be making any new releases of anything for 12.04 after 16.04 is out... similar to your backports to oldstable)
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| 17:34 | * vagrantc 's non-existant backports | |
| 17:34 | <vagrantc> we'll see though, i'm using LTSP in the real world again, might e more inclined to do some backporting
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| 17:39 | * alkisg waves, later... | |
| 17:39 | alkisg is now known as work_alkisg | |
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| 18:32 | <vagrantc> doh.
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| 18:32 | work_alkisg: not sure what i'm doing wrong, but a user in group epoptes can't access the epoptes socket :(
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| 18:33 | * vagrantc runs from console and gets some interesting errors | |
| 18:35 | <vagrantc> https://paste.debian.net/314856
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| 18:52 | it seems like it's not creating the epoptes socket
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| 18:53 | <lbssousa> vagrantc, is your twisted daemon running?
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| 18:54 | <quinox> that sounds dirty
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| 18:55 | <vagrantc> also stopping epoptes doesn't kill the socat processes....
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| 18:56 | <vagrantc> lbssousa: how would i check?
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| 18:57 | lbssousa: all i see are three socat processes
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| 18:57 | <lbssousa> It seems you are in Debian testing, right?
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| 18:57 | Try systemctl status epoptes
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| 18:57 | <vagrantc> yes
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| 18:58 | Process: 782 ExecStart=/etc/init.d/epoptes start (code=exited, status=0/SUCCESS)
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| 18:58 | Active: active (exited) since Wed 2015-10-07 11:56:11 PDT; 1min 38s ago
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| 18:58 | <lbssousa> Oh, your twisted daemon has died
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| 19:00 | <vagrantc> syslog has this line: stretchltsp epoptes[782]: Error retrieving file stats for file [/etc/lts.conf]: No such file or directory
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| 19:00 | but it should obviously work without lts.conf ...
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| 19:03 | lbssousa: does epoptes start twistd, or should that be running from some other package?
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| 19:03 | <lbssousa> It should be started by e.g. "systemctl start epoptes"
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| 19:04 | Or "/etc/init.d/epoptes start"
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| 19:05 | <vagrantc> doesn't start...
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| 19:06 | and doesn't appear to leave any useful log messages
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| 19:06 | * vagrantc sighs | |
| 19:06 | * vagrantc puts off epoptes for another day | |
| 19:08 | * vagrantc tries with sysvinit | |
| 19:10 | <lbssousa> vagrantc, just is case, you can try my systemd service file for epoptes: https://aur.archlinux.org/cgit/aur.git/plain/epoptes.service?h=epoptes-bzr
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| 19:11 | Save it in /etc/systemd/system and start it with "systemctl start epoptes.service"
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| 19:12 | You can rename the file to avoid conflicts with original sysvinit one.
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| 19:12 | e.g. epoptes-server.service
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| 19:19 | Anyone here using Polari for IRC?
| |
| 19:20 | * quinox uses Weechat inside tmux over mosh | |
| 19:21 | <quinox> the screenshots look nice
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| 19:23 | <lbssousa> test 2
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| 19:42 | work_alkisg is now known as alkisg | |
| 19:42 | <alkisg> vagrantc: it sounds like the epoptes daemon isn't started, do you want us to see it together with screen/socat/vnc?
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| 19:44 | * vagrantc got caught up in other things at the moment | |
| 19:44 | <alkisg> /usr/bin/python /usr/bin/twistd --pidfile /var/run/epoptes.pid --logfile /var/log/epoptes.log epoptes
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| 19:44 | That's a usual epoptes-daemon process
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| 19:45 | <vagrantc> ok, definitely not running
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| 19:46 | <alkisg> The socket is at /run/epoptes/epoptes.socket
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| 19:46 | and /var/log/epoptes.log may help
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| 19:47 | I don't know why epoptes would look in /etc/lts.conf
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| 19:50 | <vagrantc> something from epoptes/common/ltsconf.py ?
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| 19:51 | <alkisg> vagrantc: do you have a symlink from /var/lib... lts.conf to /etc/lts.conf?
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| 19:56 | vagrantc: I'll put stretch in a vm, which cd is closer to your setup? http://cdimage.debian.org/cdimage/weekly-builds/i386/iso-cd/debian-testing-i386-lxde-CD-1.iso ?
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| 19:57 | <vagrantc> i've actually been running gnome ...
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| 19:57 | * vagrantc just always uses mini.iso and a caching proxy | |
| 19:57 | * alkisg downloads http://cdimage.debian.org/cdimage/weekly-builds/i386/iso-cd/debian-testing-i386-CD-1.iso ... | |
| 19:57 | <vagrantc> though it wouldn't be a half-bad idea to just reinstall my setup from scratch ... tried enough weird things with it
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| 19:58 | <alkisg> Fortunately I have good internet here, it only takes 1 minute...
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| 19:58 | * vagrantc hopes testing is installable at the moment, just had a kernel update | |
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| 20:01 | <alkisg> The graphics installer showed up fine...
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| 20:01 | <vagrantc> if you get to the partitioning disks phase you should be fine
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| 20:01 | looks like epoptes 0.5.8 will be short-lived... :)
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| 20:02 | ok, other issues solved, back to epoptes...
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| 20:03 | <alkisg> vagrantc: anything useful at epoptes.log/
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| 20:03 | ?
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| 20:04 | <vagrantc> no log
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| 20:04 | <alkisg> What happens if you run that command manually?
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| 20:04 | /usr/bin/python /usr/bin/twistd --pidfile /var/run/epoptes.pid --logfile /var/log/epoptes.log epoptes
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| 20:06 | <vagrantc> with the service file lbssousa provided, it starts when i start it manually, but not on boot
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| 20:06 | <alkisg> vagrantc: maybe you hit the bug where systemd doesn't run a service twice?
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| 20:07 | maybe you need to run service epoptes stop; service epoptes start
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| 20:07 | (that doesn't answer why epoptes didn't start the first time)
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| 20:09 | <vagrantc> er, manually, using: sudo systemctl start epoptes
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| 20:10 | so the init script doesn't work on stretch, and this service file seems to have some issues...
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| 20:10 | <alkisg> vagrantc: run `systemctl stop epoptes` before that
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| 20:10 | <vagrantc> before what?
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| 20:10 | <alkisg> Before `systemctl start epoptes`
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| 20:11 | To tell systemd that the service is stopped
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| 20:11 | <vagrantc> it was already stopped
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| 20:11 | <alkisg> Did systemd say that?
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| 20:11 | Because in your logs it doesn't
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| 20:11 | (in the paste you provided)
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| 20:11 | <vagrantc> that's old news.
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| 20:11 | but we can go back to that
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| 20:12 | now that i have epoptes running, i'm going to boot a client, and see if there are other issues, and then come back to the startup issue
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| 20:13 | <alkisg> OK, I should have stretch up and running in a few minutes...
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| 20:13 | I'll troubleshoot the startup issue
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| 20:13 | <vagrantc> alkisg: cool.
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| 20:13 | i should probaly do a clean install as well
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| 20:14 | well, booted client doesn't show up either
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| 20:15 | before or after login ... running gnome3
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| 20:15 | <alkisg> Did you run epoptes-client -c?
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| 20:16 | <vagrantc> you mean did i follow the installation instructions? :)
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| 20:16 | i thought with a ltsp-pnp that's done automatically
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| 20:16 | <alkisg> Yup that would work
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| 20:17 | What happens if you manually run epoptes-client from the client?
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| 20:17 | e.g. from inside the session...
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| 20:20 | vagrantc: how should I go about installing some new ltsp version in stretch? debuild by myself?
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| 20:20 | Do you have any handy repositories somewhere?
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| 20:21 | <vagrantc> not yet, but i could probably push something quick
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| 20:21 | * alkisg would appreciate that | |
| 20:21 | <vagrantc> alkisg: so, on an ltsp (PNP) fatclient?
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| 20:21 | <alkisg> yes
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| 20:21 | <vagrantc> alkisg: what should i see for processes?
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| 20:21 | epoptes-client ?
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| 20:22 | socat?
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| 20:22 | <alkisg> epoptes-client, yes
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| 20:22 | socat too
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| 20:22 | epoptes-client is dash renamed
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| 20:22 | socat is for the transport part
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| 20:22 | <vagrantc> i just see two socat processes, no epoptes-client processes
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| 20:23 | <alkisg> maybe they did not manage to connect
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| 20:23 | Can you run epoptes-client manually to see its output?
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| 20:24 | <vagrantc> so, "/usr/sbin/epoptes-client"
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| 20:24 | ?
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| 20:24 | no arguments?
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| 20:24 | <alkisg> yes
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| 20:24 | OK I have stretch+gnome installed and updated
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| 20:25 | I'll try installing epoptes from the ppa first
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| 20:30 | <alkisg> vagrantc: add-apt-repository ppa:alkisg; apt-get update; apt-get install epoptes ==> epoptes is now automatically started
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| 20:30 | I didn't do anything more than that after installation...
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| 20:31 | No reboot either after installing epoptes
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| 20:33 | vagrantc: maybe you have ipv6 enabled and it breaks some scripts for epoptes-client?
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| 20:33 | I don't know if it supports ipv6...
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| 20:33 | <vagrantc> just link-local stuff ...
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| 20:33 | i.e. the defaults
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| 20:34 | alkisg: i built the package on sid, so maybe sid's build environment resulted in some incompatibilities...
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| 20:34 | <alkisg> vagrantc: if you set up some repository I can troubleshoot tomorrow morning
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| 20:34 | <vagrantc> i'll also try with a fresh install
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| 20:34 | alkisg: done.
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| 20:34 | alkisg: deb http://cascadia.aikidev.net/~vagrant/debian UNRELEASED main
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| 20:35 | alkisg: has ldm, ltsp, ltspfs and epoptes
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| 20:35 | <alkisg> Thanks, let me try that now...
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| 20:37 | <vagrantc> alkisg: you can find my key in the debian-keyring package :)
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| 20:40 | <alkisg> vagrantc: I reverted the VM "just installed" snapshot, added your repo, apt-get install --allow-unauthenticated epoptes, and now epoptes is running
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| 20:40 | I didn't have to do anything else...
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| 20:40 | <vagrantc> ok, i guess i'll try a fresh install
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| 20:40 | although what messed it up is a little unnerving
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| 20:42 | <alkisg> To save some time in testing: LTSP_CLIENT_MAC=a1:b2:c3:d4:e5:f6 LTSP_CLIENT=1.2.3.4 LTSP_HOSTNAME=pc01 /usr/sbin/epoptes-client localhost
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| 20:42 | --> emulates a client, it connected fine
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| 20:43 | I'll try the ltsp/ldm etc versions tomorrow, along with ltsp-pnp and epoptes
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| 20:46 | <vagrantc> it's still configured to default to NFS ... which is still broken
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| 20:47 | <alkisg> ltsp-pnp isn't default anywhere...
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| 20:47 | although I'm guessing it could start being the default (meaning dnsmasq etc, not the -c / part)
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| 20:48 | proxydhcp is a much easier way, it doesn't require someone to change his networking etc
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| 20:49 | and it also automatically supports 2 nic setups with 192.168.67.1
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| 20:49 | <vagrantc> right
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| 20:49 | <alkisg> vagrantc, do you think it would make sense to add an ltsp-pnp metapackage?
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| 20:50 | this will also make more sense, now we're only talking about ltsp-pnp as a concept
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| 20:50 | ltsp-pnp would add all the defaults that ltsp-pnp uses
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| 20:50 | dnsmasq, proxy, ltsp-server and client, nbd default..
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| 20:51 | <alkisg> That would be the same in debian and ubuntu, without breaking the existing how-to's
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| 20:51 | So I'd like it if it would go like: apt-get install ltsp-pnp; ltsp-update-image -c / ==> done
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| 20:51 | That would be the ltsp-pnp how-to...
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| 20:52 | <vagrantc> there's some logic to that...
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| 20:52 | <alkisg> if really needed, we could add an `ltsp-config pnp` step
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| 20:52 | <vagrantc> right
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| 20:52 | <alkisg> But the ltsp-pnp package should take care of the dependencies
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| 20:52 | * vagrantc really needs to update debian/copyright | |
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| 20:56 | * alkisg => pumpkin :) | |
| 20:56 | alkisg is now known as work_alkisg | |
| 20:56 | <vagrantc> night!
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