Re: Again netgroup problems
On Sun, Jul 05, 2015 at 12:28:00PM +0200, Andreas B. Mundt wrote: > Hi, > > On Sun, Jul 05, 2015 at 11:40:36AM +0200, Giorgio Pioda wrote: > > > I can confirm a boot race condition (IIRC somebody talked six months ago > > about > > autofs/systemd issues in this mailing list) > > > > Restarting manually the sercvices in the (more or less correct) order on > > tjener: > > > > 1) nscd & nslcd > > 2) nfs-common nfs-kernel > > 3) autofs > > > > Fixes WS login > > > > I guess some careful upstream check is really needed > > Perhaps https://bugs.debian.org/759544>? > > It's probably still an issue in stable. This morning again reproduced at boot. In /var/log/daemon.log I see the following error, related to a blocked WS: Jul 6 08:03:42 client8855 nslcd[1279]: version 0.9.4 starting Jul 6 08:03:45 client8855 nslcd[1279]: accepting connections Jul 6 08:03:45 client8855 nslcd[1262]: Starting LDAP connection daemon: nslcd. Jul 6 08:03:49 client8855 nslcd[1279]: [b0dc51] (re)loading /etc/nsswitch.conf Jul 6 08:07:38 client8855 nslcd[1279]: [16231b] (re)loading /etc/nsswitch.conf Jul 6 08:15:39 client8855 nslcd[1279]: [6afb66] request denied by validnames option Until now I've havent seen any nslcd error log refferd to the tjener -- Giorgio Pioda - Sysadmin SPSE-Tenero Cell +41 79 629 20 63 Tel +41 58 468 62 48 Fax +41 58 468 61 98 -- To UNSUBSCRIBE, email to debian-edu-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/20150706062730.ga9...@macchianera.pioderia.lan
Re: Again netgroup problems
On Sun, Jul 05, 2015 at 11:03:04PM +0200, Wolfgang Schweer wrote: > On Sun, Jul 05, 2015 at 12:35:57PM +0200, Giorgio Pioda wrote: > > On Sun, Jul 05, 2015 at 12:28:00PM +0200, Andreas B. Mundt wrote: > > > Hi, > > > > > > On Sun, Jul 05, 2015 at 11:40:36AM +0200, Giorgio Pioda wrote: > > > > > > > I can confirm a boot race condition (IIRC somebody talked six > > > > months ago about autofs/systemd issues in this mailing list) > > > > > > > > Restarting manually the sercvices in the (more or less correct) > > > > order on tjener: > > > > > > > > 1) nscd & nslcd > > > > 2) nfs-common nfs-kernel > > > > 3) autofs > > > > > > > > Fixes WS login > > > > > > > > I guess some careful upstream check is really needed > > > > > > Perhaps https://bugs.debian.org/759544>? > > > > > > It's probably still an issue in stable. > > > > Yes, this is it, I guess. > > > > Not 1 in 5 reboot, probably 4 on 5. > > > > Tomorrow I'll reboot and see if it get stuck again. > > In a VirtualBox test environment (combined server, gateway, workstation > and in addition five diskless workstations which are forced to use KDM and > NFS by setting DEFAULT_DISPLAY_MANAGER=/usr/bin/kdm in lts.conf) I've > rebooted the main server 7 times; logging into randomly chosen > workstations was successful each time. > > As reported, I've disabled nscd netgroup caching. This might serve as a > workaround until a real fix for the problem is available. > > On tjener: > service nscd stop > rm /var/cache/nscd/netgroup > sed -i '/netgroup/ s/yes/no/' /etc/nscd.conf > service nscd start > service nslcd restart > service nfs-kernel-server restart > > Wolfgang Thanks a lot for you involvment, tomorrow (today almost) I'll try again. Sometimes I rebooted without plugging the ethernet cable first (I'm switching between actual tjener and the new jessie for quick needs). Maybe the plugged/unplugged ethernet makes the difference? Regards Giorgio -- Giorgio Pioda - Sysadmin SPSE-Tenero Cell +41 79 629 20 63 Tel +41 58 468 62 48 Fax +41 58 468 61 98 -- To UNSUBSCRIBE, email to debian-edu-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/20150705213503.gb4...@amiata.pioderia.lan
Re: Again netgroup problems
On Sun, Jul 05, 2015 at 12:35:57PM +0200, Giorgio Pioda wrote: > On Sun, Jul 05, 2015 at 12:28:00PM +0200, Andreas B. Mundt wrote: > > Hi, > > > > On Sun, Jul 05, 2015 at 11:40:36AM +0200, Giorgio Pioda wrote: > > > > > I can confirm a boot race condition (IIRC somebody talked six > > > months ago about autofs/systemd issues in this mailing list) > > > > > > Restarting manually the sercvices in the (more or less correct) > > > order on tjener: > > > > > > 1) nscd & nslcd > > > 2) nfs-common nfs-kernel > > > 3) autofs > > > > > > Fixes WS login > > > > > > I guess some careful upstream check is really needed > > > > Perhaps https://bugs.debian.org/759544>? > > > > It's probably still an issue in stable. > > Yes, this is it, I guess. > > Not 1 in 5 reboot, probably 4 on 5. > > Tomorrow I'll reboot and see if it get stuck again. In a VirtualBox test environment (combined server, gateway, workstation and in addition five diskless workstations which are forced to use KDM and NFS by setting DEFAULT_DISPLAY_MANAGER=/usr/bin/kdm in lts.conf) I've rebooted the main server 7 times; logging into randomly chosen workstations was successful each time. As reported, I've disabled nscd netgroup caching. This might serve as a workaround until a real fix for the problem is available. On tjener: service nscd stop rm /var/cache/nscd/netgroup sed -i '/netgroup/ s/yes/no/' /etc/nscd.conf service nscd start service nslcd restart service nfs-kernel-server restart Wolfgang signature.asc Description: Digital signature
Re: Again netgroup problems
On Sun, Jul 05, 2015 at 12:28:00PM +0200, Andreas B. Mundt wrote: > Hi, > > On Sun, Jul 05, 2015 at 11:40:36AM +0200, Giorgio Pioda wrote: > > > I can confirm a boot race condition (IIRC somebody talked six months ago > > about > > autofs/systemd issues in this mailing list) > > > > Restarting manually the sercvices in the (more or less correct) order on > > tjener: > > > > 1) nscd & nslcd > > 2) nfs-common nfs-kernel > > 3) autofs > > > > Fixes WS login > > > > I guess some careful upstream check is really needed > > Perhaps https://bugs.debian.org/759544>? > > It's probably still an issue in stable. Yes, this is it, I guess. Not 1 in 5 reboot, probably 4 on 5. Tomorrow I'll reboot and see if it get stuck again. -- Giorgio Pioda - Sysadmin SPSE-Tenero Cell +41 79 629 20 63 Tel +41 58 468 62 48 Fax +41 58 468 61 98 -- To UNSUBSCRIBE, email to debian-edu-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/20150705103557.ga13...@macchianera.pioderia.lan
Re: Again netgroup problems
Hi, On Sun, Jul 05, 2015 at 11:40:36AM +0200, Giorgio Pioda wrote: > I can confirm a boot race condition (IIRC somebody talked six months ago about > autofs/systemd issues in this mailing list) > > Restarting manually the sercvices in the (more or less correct) order on > tjener: > > 1) nscd & nslcd > 2) nfs-common nfs-kernel > 3) autofs > > Fixes WS login > > I guess some careful upstream check is really needed Perhaps https://bugs.debian.org/759544>? It's probably still an issue in stable. Regards, Andi -- To UNSUBSCRIBE, email to debian-edu-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/20150705102800.GA3314@flashgordon
Re: Again netgroup problems
On Sun, Jul 05, 2015 at 11:31:07AM +0200, Giorgio Pioda wrote: > Hi, > > yeterday evening ath the end the WS login was ok on 4 clients... > > This morning still functional. > > Then I wanted to set async mode to nfs and doing this i rebooted > the tjener instead of restarting only nfs services (I'v been lazy), > and SURPRISE. Login is not any more possible. Even reverting back > to sync mode doersn't change, so i guess the triggering event has been > the reboot, not the nfs modification. > > More. Calling nscd -i hangs for long time. Thus i restarted manually > nscd and nslcd, after this nscd -i started running again. But still no > WS login. > > I'm slowly thinking that there is some kind of race condition at boot > between ncsd/autofs/nfs4. Woould be wise if someboby else could > try to reproduce my events. Hi, I can confirm a boot race condition (IIRC somebody talked six months ago about autofs/systemd issues in this mailing list) Restarting manually the sercvices in the (more or less correct) order on tjener: 1) nscd & nslcd 2) nfs-common nfs-kernel 3) autofs Fixes WS login I guess some careful upstream check is really needed Regards -- Giorgio Pioda - Sysadmin SPSE-Tenero Cell +41 79 629 20 63 Tel +41 58 468 62 48 Fax +41 58 468 61 98 -- To UNSUBSCRIBE, email to debian-edu-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/20150705094036.gb10...@macchianera.pioderia.lan
Again netgroup problems
Hi, yeterday evening ath the end the WS login was ok on 4 clients... This morning still functional. Then I wanted to set async mode to nfs and doing this i rebooted the tjener instead of restarting only nfs services (I'v been lazy), and SURPRISE. Login is not any more possible. Even reverting back to sync mode doersn't change, so i guess the triggering event has been the reboot, not the nfs modification. More. Calling nscd -i hangs for long time. Thus i restarted manually nscd and nslcd, after this nscd -i started running again. But still no WS login. I'm slowly thinking that there is some kind of race condition at boot between ncsd/autofs/nfs4. Woould be wise if someboby else could try to reproduce my events. Regards Giorgio -- Giorgio Pioda - Sysadmin SPSE-Tenero Cell +41 79 629 20 63 Tel +41 58 468 62 48 Fax +41 58 468 61 98 -- To UNSUBSCRIBE, email to debian-edu-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/20150705093107.ga10...@macchianera.pioderia.lan
