Re: [systemd-devel] RFC: filter and search journalctl
- Original Message - From: Anne Mulhern amulh...@redhat.com To: systemd-devel@lists.freedesktop.org Sent: Monday, August 17, 2015 11:34:10 AM Subject: Re: [systemd-devel] RFC: filter and search journalctl - Original Message - From: Zbigniew Jędrzejewski-Szmek zbys...@in.waw.pl To: Anne Mulhern amulh...@redhat.com Cc: systemd-devel@lists.freedesktop.org, Sebastian Schindler sebastian.schind...@travelping.com Sent: Monday, August 17, 2015 10:45:11 AM Subject: Re: [systemd-devel] RFC: filter and search journalctl On Mon, Aug 17, 2015 at 10:24:22AM -0400, Anne Mulhern wrote: - Original Message - From: Zbigniew Jędrzejewski-Szmek zbys...@in.waw.pl To: Sebastian Schindler sebastian.schind...@travelping.com Cc: systemd-devel@lists.freedesktop.org Sent: Saturday, August 8, 2015 3:48:30 PM Subject: Re: [systemd-devel] RFC: filter and search journalctl On Fri, Aug 07, 2015 at 11:53:13AM +0200, Sebastian Schindler wrote: Grep-ing seems to be the only solution to find log entries if you don't fully know what you're looking for. For example: You want to see all entries containing a certain MESSAGE that gets enriched with additional information during the logging process: MESSAGE=host HOST has closed connection CONNECTION_ID This is a bit contentious, but at least I would like to see some grep functionality implemented directly in journalctl. I am late to the party, but I think it is obvious that the right way for this to be achieved, in a perfect world, is that this log entry be accompanied by a MESSAGE_ID, and HOST and CONNECTION_ID keys, and a catalog entry that combined with the keys, generates the above message so that grepping is entirely unnecessary. It is true that this perfect world is not just around the corner, or anything like that, but it is technically possible. I agree that grepping would be handy for me, right now, for just the reasons stated in the original message. I wonder if it would be reasonable for journalctl to supply the (additional) fields that are guaranteed to be associated with a MESSAGE_ID And what what happen when the entry is malformed, i.e. missing some fields? Would journald reject the message? I don't think this would be useful to anyone at all. Instead the readers of the message should gracefully adapt to missing fields. I think it would be wrong for journald to reject a message that does not supply all the declared fields. It would also be wrong for journalctl to crash when given the --catalog flag if the fields are missing. I don't know what it does right now, because it is not that easy a situation to engineer, AFAICT. I guess the best thing would be to supply a special catalog message indicating that an error had occurred when trying to construct a catalog message. Something that indicated the fields that were missing that caused the error would be nice. Just so long as that didn't turn into an infinite loop, somehow. If somebody knows what journalctl does do in this situation, please pass that information along. Re-reading the docs, I realize that the information is right there in plain sight. If the value is not defined, the variable name, minus the @ signs, is displayed. Nice and simple. But now, I wonder what happens for fields like _UDEV_DEVLINK, which can be set 0, 1, or many times. If unset, the variable name minus the @ signs is displayed. If set once, the value is substituted. If set twice? -- SNIP -- ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel - mulhern ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
Re: [systemd-devel] terminals not appearing
Am 18.08.2015 um 20:24 schrieb Michał Zegan: Hello. I have the newest arch, systemd version 224. The thing that I wonder about is that sometimes, when I press ctrl+alt+f1..f6, ttys do not appear and I do not see the login prompt. Like there is an initial tty1, but when I start a gui, it is freed. Other ttys often just do not appear. Sometimes the wiki helps here: https://wiki.archlinux.org/index.php/Systemd_FAQ#How_do_I_change_the_default_number_of_gettys.3F greez Phil ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
Re: [systemd-devel] use-case for sparse tar archives
On Tue, Aug 18, 2015 at 6:29 PM, Lennart Poettering lenn...@poettering.net wrote: Why would you not do this? GNU tar's documentation mentions the main drawback: However, be aware that `--sparse' option presents a serious drawback. Namely, in order to determine if the file is sparse `tar' has to read it before trying to archive it, so in total the file is read *twice*. So, always bear in mind that the time needed to process all files with this option is roughly twice the time needed to archive them without it. I think having to scan a multi-gigabyte file for zeroes before archiving it would slow down the process quite a bit. It doesn't sound like GNU tar supports querying for holes using FIEMAP or something similar. Besides this, I guess it could be a portability issue. libarchive tar's man page contains: There is not yet any support for multi-volume archives or for archiving sparse files. Instead, libarchive supports transforming zero-filled blocks into holes while extracting. It depends on the compression to archive sparse files efficiently. ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
[systemd-devel] terminals not appearing
Hello. I have the newest arch, systemd version 224. The thing that I wonder about is that sometimes, when I press ctrl+alt+f1..f6, ttys do not appear and I do not see the login prompt. Like there is an initial tty1, but when I start a gui, it is freed. Other ttys often just do not appear. ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
Re: [systemd-devel] use-case for sparse tar archives
On Tue, Aug 18, 2015 at 12:29 PM, Lennart Poettering lenn...@poettering.net wrote: On Tue, 18.08.15 12:07, Vincent Batts (vba...@redhat.com) wrote: Before submitting a change for this, why is the creation of tar's using `--sparse`? https://github.com/systemd/systemd/blob/master/src/import/import-common.c#L213 If you save/restore/migrate disk trees that include sparse files like utmp/wtmp or journal files it sounds like a good idea to keep them sparse. Why would you not do this? Lennart It makes reassembling the pristine tar archive almost impossible. https://github.com/vbatts/tar-split is a project of mine to reassemble cryptographically verifiable archives. It's merged into docker now, but i'm looking to investigate portability of containers as it relates to nspawn and machinectl import. vb ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
[systemd-devel] directory for machine templates
/var/lib/machines is intended to be, as I understand it, for (virtual) machines that are or could be started at every boot. Would it make sense to have a similar convention for templates? Use cases: 1. Testing. Pull base image once, run lots of containers from the same base image 2. Hosting. Pull common base image(s) once, let customers instantiate lots of containers from the same base image(s) It could work like this, with -T (template) in analogy to -M (machine): $ system-nspawn -T fedora-xyz -M fedora-test123 where /var/lib/machine-templates/fedora-xyz is the file downloaded with something like: $ machinectl pull-raw-template http://../fedora-xyz http://../fedora-xyz Just a thought. Cheers, Johannes. ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
Re: [systemd-devel] terminals not appearing
Seems like this does not apply. I said that terminals do not start, and this is random, sometimes they do. n_auto_vts = 6. W dniu 18.08.2015 o 20:28, Philip Müller pisze: Am 18.08.2015 um 20:24 schrieb Michał Zegan: Hello. I have the newest arch, systemd version 224. The thing that I wonder about is that sometimes, when I press ctrl+alt+f1..f6, ttys do not appear and I do not see the login prompt. Like there is an initial tty1, but when I start a gui, it is freed. Other ttys often just do not appear. Sometimes the wiki helps here: https://wiki.archlinux.org/index.php/Systemd_FAQ#How_do_I_change_the_default_number_of_gettys.3F greez Phil ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
[systemd-devel] httpd.service daemon failing to start on Manjaro Linux
Hi, I've been following this guide https://wiki.archlinux.org/index.php/MediaWiki to install MediaWiki 1.25.2 on my Manjaro Linux machine. I managed to follow the guide, without errors until I reached the stage of restarting httpd.service, namely running: systemctl restart httpd.service This gives the error: Job for httpd.service failed because the control process exited with error code. See systemctl status httpd.service and journalctl -xe for details. Running systemctl status httpd.service gives: ● httpd.service - Apache Web Server Loaded: loaded (/usr/lib/systemd/system/httpd.service; disabled; vendor preset: disabled) Active: failed (Result: exit-code) since Tue 2015-08-18 23:18:10 AEST; 16s ago Process: 1083 ExecStart=/usr/bin/apachectl start (code=exited, status=1/FAILURE) Aug 18 23:18:10 fusion809-vbox systemd[1]: Stopped Apache Web Server. Aug 18 23:18:10 fusion809-vbox systemd[1]: Starting Apache Web Server... Aug 18 23:18:10 fusion809-vbox apachectl[1083]: AH00526: Syntax error on lin...: Aug 18 23:18:10 fusion809-vbox apachectl[1083]: Invalid command 'php_admin_v...n Aug 18 23:18:10 fusion809-vbox systemd[1]: httpd.service: Control process ex...1 Aug 18 23:18:10 fusion809-vbox systemd[1]: Failed to start Apache Web Server. Aug 18 23:18:10 fusion809-vbox systemd[1]: httpd.service: Unit entered faile Aug 18 23:18:10 fusion809-vbox systemd[1]: httpd.service: Failed with result Hint: Some lines were ellipsized, use -l to show in full. Likewise running: journalctl -xe gives: Aug 18 23:18:10 fusion809-vbox systemd[1]: Starting Apache Web Server... -- Subject: Unit httpd.service has begun start-up -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- -- Unit httpd.service has begun starting up. Aug 18 23:18:10 fusion809-vbox apachectl[1083]: AH00526: Syntax error on line 2 Aug 18 23:18:10 fusion809-vbox apachectl[1083]: Invalid command 'php_admin_valu Aug 18 23:18:10 fusion809-vbox systemd[1]: httpd.service: Control process exite Aug 18 23:18:10 fusion809-vbox systemd[1]: Failed to start Apache Web Server. -- Subject: Unit httpd.service has failed -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- -- Unit httpd.service has failed. -- -- The result is failed. Aug 18 23:18:10 fusion809-vbox systemd[1]: httpd.service: Unit entered failed s Aug 18 23:18:10 fusion809-vbox systemd[1]: httpd.service: Failed with result 'e Aug 18 23:18:10 fusion809-vbox polkitd[384]: Unregistered Authentication Agent Aug 18 23:18:21 fusion809-vbox pulseaudio[666]: [alsa-sink-Intel ICH] alsa-sink Aug 18 23:18:21 fusion809-vbox pulseaudio[666]: [alsa-sink-Intel ICH] alsa-sink Aug 18 23:18:21 fusion809-vbox pulseaudio[666]: [alsa-sink-Intel ICH] alsa-sink lines 2281-2303/2 Any help with be greatly appreciated. Thanks for your time, Brenton ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
Re: [systemd-devel] httpd.service daemon failing to start on Manjaro Linux
Am 18.08.2015 um 16:24 schrieb Brenton Horne: Hi, I've been following this guide https://wiki.archlinux.org/index.php/MediaWiki to install MediaWiki 1.25.2 on my Manjaro Linux machine. I managed to follow the guide, without errors until I reached the stage of restarting httpd.service, namely running: systemctl restart httpd.service This gives the error: Job for httpd.service failed because the control process exited with error code. See systemctl status httpd.service and journalctl -xe for details. Running systemctl status httpd.service gives: ● httpd.service - Apache Web Server Loaded: loaded (/usr/lib/systemd/system/httpd.service; disabled; vendor preset: disabled) Active: failed (Result: exit-code) since Tue 2015-08-18 23:18:10 AEST; 16s ago Process: 1083 ExecStart=/usr/bin/apachectl start (code=exited, status=1/FAILURE) Aug 18 23:18:10 fusion809-vbox systemd[1]: Stopped Apache Web Server. Aug 18 23:18:10 fusion809-vbox systemd[1]: Starting Apache Web Server... Aug 18 23:18:10 fusion809-vbox apachectl[1083]: AH00526: Syntax error on lin...: Aug 18 23:18:10 fusion809-vbox apachectl[1083]: Invalid command 'php_admin_v...n Aug 18 23:18:10 fusion809-vbox systemd[1]: httpd.service: Control process ex...1 Aug 18 23:18:10 fusion809-vbox systemd[1]: Failed to start Apache Web Server. Aug 18 23:18:10 fusion809-vbox systemd[1]: httpd.service: Unit entered faile Aug 18 23:18:10 fusion809-vbox systemd[1]: httpd.service: Failed with result Hint: Some lines were ellipsized, use -l to show in full. Likewise running: journalctl -xe gives: Aug 18 23:18:10 fusion809-vbox systemd[1]: Starting Apache Web Server... -- Subject: Unit httpd.service has begun start-up -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- -- Unit httpd.service has begun starting up. Aug 18 23:18:10 fusion809-vbox apachectl[1083]: AH00526: Syntax error on line 2 Aug 18 23:18:10 fusion809-vbox apachectl[1083]: Invalid command 'php_admin_valu Aug 18 23:18:10 fusion809-vbox systemd[1]: httpd.service: Control process exite Aug 18 23:18:10 fusion809-vbox systemd[1]: Failed to start Apache Web Server. -- Subject: Unit httpd.service has failed -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- -- Unit httpd.service has failed. -- -- The result is failed. Aug 18 23:18:10 fusion809-vbox systemd[1]: httpd.service: Unit entered failed s Aug 18 23:18:10 fusion809-vbox systemd[1]: httpd.service: Failed with result 'e Aug 18 23:18:10 fusion809-vbox polkitd[384]: Unregistered Authentication Agent Aug 18 23:18:21 fusion809-vbox pulseaudio[666]: [alsa-sink-Intel ICH] alsa-sink Aug 18 23:18:21 fusion809-vbox pulseaudio[666]: [alsa-sink-Intel ICH] alsa-sink Aug 18 23:18:21 fusion809-vbox pulseaudio[666]: [alsa-sink-Intel ICH] alsa-sink lines 2281-2303/2 Any help with be greatly appreciated. Thanks for your time, Brenton ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel As you can see in the output of systemctl status, your apache.conf has an syntax error. Fix it. Regards ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
Re: [systemd-devel] RFC: filter and search journalctl
On Tue, Aug 18, 2015 at 09:00:27AM -0400, Anne Mulhern wrote: Re-reading the docs, I realize that the information is right there in plain sight. If the value is not defined, the variable name, minus the @ signs, is displayed. Nice and simple. But now, I wonder what happens for fields like _UDEV_DEVLINK, which can be set 0, 1, or many times. If unset, the variable name minus the @ signs is displayed. If set once, the value is substituted. If set twice? One value is used. Which one is pseudorandom. Zbyszek ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
Re: [systemd-devel] httpd.service daemon failing to start on Manjaro Linux
On 08/18/2015 04:24 PM, Brenton Horne wrote: Aug 18 23:18:10 fusion809-vbox systemd[1]: Starting Apache Web Server... -- Subject: Unit httpd.service has begun start-up -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- -- Unit httpd.service has begun starting up. Aug 18 23:18:10 fusion809-vbox apachectl[1083]: AH00526: Syntax error on line 2 Aug 18 23:18:10 fusion809-vbox apachectl[1083]: Invalid command 'php_admin_valu Aug 18 23:18:10 fusion809-vbox systemd[1]: httpd.service: Control process exite Aug 18 23:18:10 fusion809-vbox systemd[1]: Failed to start Apache Web Server. That's a configuration problem of your Apache install and has nothing to do with systemd. Thanks, Daniel ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
Re: [systemd-devel] httpd.service daemon failing to start on Manjaro Linux
Am 18.08.2015 um 16:35 schrieb Daniel Mack: On 08/18/2015 04:24 PM, Brenton Horne wrote: Aug 18 23:18:10 fusion809-vbox systemd[1]: Starting Apache Web Server... -- Subject: Unit httpd.service has begun start-up -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- -- Unit httpd.service has begun starting up. Aug 18 23:18:10 fusion809-vbox apachectl[1083]: AH00526: Syntax error on line 2 Aug 18 23:18:10 fusion809-vbox apachectl[1083]: Invalid command 'php_admin_valu Aug 18 23:18:10 fusion809-vbox systemd[1]: httpd.service: Control process exite Aug 18 23:18:10 fusion809-vbox systemd[1]: Failed to start Apache Web Server. That's a configuration problem of your Apache install and has nothing to do with systemd in fact it is using php-config-directives while not load mod_php Invalid command 'php_admin_v...n signature.asc Description: OpenPGP digital signature ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
Re: [systemd-devel] use-case for sparse tar archives
On Tue, 18.08.15 12:07, Vincent Batts (vba...@redhat.com) wrote: Before submitting a change for this, why is the creation of tar's using `--sparse`? https://github.com/systemd/systemd/blob/master/src/import/import-common.c#L213 If you save/restore/migrate disk trees that include sparse files like utmp/wtmp or journal files it sounds like a good idea to keep them sparse. Why would you not do this? Lennart -- Lennart Poettering, Red Hat ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
[systemd-devel] use-case for sparse tar archives
Before submitting a change for this, why is the creation of tar's using `--sparse`? https://github.com/systemd/systemd/blob/master/src/import/import-common.c#L213 vb ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
