[Bug 1578080] Re: percona cluster hits resource limits in HA Openstack cloud with xenial

[Launchpad Bug Tracker]

This bug was fixed in the package systemd - 229-4ubuntu6

---
systemd (229-4ubuntu6) xenial-proposed; urgency=medium

  * Add a DHCP exit hook for pushing received NTP servers into timesyncd.
(LP: #1578663)
  * Revert "enable TasksMax= for all services by default, and set it to 512".
Introducing a default limit on number of threads broke a lot of software
which regularly needs more, such as MySQL and RabbitMQ, or services that
spawn off an indefinite number of subtasks that are not in a scope, like
LXC or cron. 512 is way too much for most "simple" services, and it's way
too little for the ones mentioned above. Effective (and much stricter)
limits should instead be put into units individually.
(Closes: #823530, LP: #1578080)
  * debian/gbp.conf: Switch to ubuntu-xenial branch.

 -- Martin Pitt   Thu, 12 May 2016 10:39:30
+0200

** Changed in: systemd (Ubuntu Xenial)
   Status: Fix Committed => Fix Released

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Title:
  percona cluster hits resource limits in HA Openstack cloud with xenial

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[Bug 1578080] Re: percona cluster hits resource limits in HA Openstack cloud with xenial

[Bug Watch Updater]

** Changed in: systemd (Debian)
   Status: Confirmed => Fix Released

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https://bugs.launchpad.net/bugs/1578080

Title:
  percona cluster hits resource limits in HA Openstack cloud with xenial

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[Bug 1578080] Re: percona cluster hits resource limits in HA Openstack cloud with xenial

[Launchpad Bug Tracker]

This bug was fixed in the package systemd - 229-6ubuntu1

---
systemd (229-6ubuntu1) yakkety; urgency=medium

  * Merge with Debian unstable. Remaining Ubuntu changes:
- Hack to support system-image read-only /etc, and modify files in
  /etc/writable/ instead.

systemd (229-6) unstable; urgency=medium

  * systemd-container: Prefer renamed "btrfs-progs" package name over
"btrfs-tools". (Closes: #822629)
  * systemd-container: Recommend libnss-mymachines. (Closes: #822615)
  * Drop systemd-dbg, in favor of debhelpers' automatic -dbgsym packages.
  * Drop Add-targets-for-compatibility-with-Debian-insserv-sy.patch; we don't
need $x-display-manager any more as most/all DMs ship native services, and
$mail-transport-agent is not widely used (not even by our default MTA
exim4).
  * Unify our two patches for Debian specific configuration files.
  * Drop udev-re-enable-mount-propagation-for-udevd.patch, i. e. run udevd in
its own slave mount name space again. laptop-mode-tools 1.68 fixed the
original bug (#762018), thus add a Breaks: to earlier versions.
  * Ship fbdev-blacklist.conf in /lib/modprobe.d/ instead of /etc/modprobe.d/;
remove the conffile on upgrades.
  * Replace util-Add-hidden-suffixes-for-ucf.patch with patch that got
committed upstream.
  * Replace Stop-syslog.socket-when-entering-emergency-mode.patch with patch
that got committed upstream.
  * debian/udev.README.Debian: Adjust documentation of MAC based naming for
USB network cards to the udev rule, where this was moved to in 229-5.
  * debian/extra/init-functions.d/40-systemd: Invoke status command with
--no-pager, to avoid blocking scripts that call an init.d script with
"status" with an unexpected pager process. (Closes: #765175, LP: #1576409)
  * Add debian/extra/rules/70-debian-uaccess.rules: Make FIDO U2F dongles
accessible to the user session. This avoids having to install libu2f-host0
(which isn't discoverable at all) to make those devices work.
(LP: #1387908)
  * libnss-resolve: Enable systemd-resolved.service on package installation,
as this package makes little sense without resolved.
  * Add a DHCP exit hook for pushing received NTP servers into timesyncd.
(LP: #1578663)
  * debian/udev.postinst: Fix migration check from the old persistent-net
generator to not apply to chroots. (Closes: #813141)
  * Revert "enable TasksMax= for all services by default, and set it to 512".
Introducing a default limit on number of threads broke a lot of software
which regularly needs more, such as MySQL and RabbitMQ, or services that
spawn off an indefinite number of subtasks that are not in a scope, like
LXC or cron. 512 is way too much for most "simple" services, and it's way
too little for the ones mentioned above. Effective (and much stricter)
limits should instead be put into units individually.
(Closes: #823530, LP: #1578080)
  * Split out udev rule to name USB network interfaces by MAC address into
73-usb-net-by-mac.rules, so that it's easier to disable. (Closes: #824025)
  * 73-usb-net-by-mac.rules: Disable when net.ifnames=0 is specified on the
kernel command line, to be consistent with disabling the *.link files.
  * 73-special-net-names.rule: Name the IBM integrated management module
virtual USB network card "ibmimm". Thanks Marco d'Itri!

 -- Martin Pitt   Thu, 12 May 2016 10:30:59
+0200

** Changed in: systemd (Ubuntu)
   Status: Fix Committed => Fix Released

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Title:
  percona cluster hits resource limits in HA Openstack cloud with xenial

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[Bug 1578080] Re: percona cluster hits resource limits in HA Openstack cloud with xenial

[James Page]

** Changed in: percona-cluster (Juju Charms Collection)
   Status: New => Won't Fix

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Title:
  percona cluster hits resource limits in HA Openstack cloud with xenial

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[Bug 1578080] Re: percona cluster hits resource limits in HA Openstack cloud with xenial

[Martin Pitt]

This was discussed upstream last November:
https://lists.freedesktop.org/archives/systemd-
devel/2015-November/035006.html

And then enabled by default in 228 in
https://github.com/systemd/systemd/commit/9ded9cd14.

So in retrospect, having a default limit there was not such a good idea
after all: 512 is way too much for most "simple" services, and it's way
too little for others such as the ones mentioned above. There is also no
particular rationale about "512", so even if we'd bump it to 1024 we'd
just make the limit even less useful while still breaking software.

So I think we should disable the default limit at least for Xenial in an
SRU, but probably also in devel. It is both much safer and also much
more effective in terms of guarding against berserk
programs/bugs/unintended fork bombs etc. to set limits in units
individually. Once someone looks at one, this is then a great time to
also flip on the other resource and privilege limitations that systemd
offers, such as CapabilityBoundingSet=, SecureBits=, PrivateDevices=,
PrivateNetwork=, ProtectSystem=, ProtectHome=, etc.


** Changed in: percona-xtradb-cluster-5.6 (Ubuntu)
   Status: New => Won't Fix

** Changed in: systemd (Ubuntu)
   Importance: Undecided => High

** Changed in: systemd (Ubuntu)
   Status: New => In Progress

** Also affects: systemd (Ubuntu Xenial)
   Importance: Undecided
   Status: New

** Also affects: percona-xtradb-cluster-5.6 (Ubuntu Xenial)
   Importance: Undecided
   Status: New

** Bug watch added: Debian Bug tracker #823530
   http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=823530

** Also affects: systemd (Debian) via
   http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=823530
   Importance: Unknown
   Status: Unknown

** No longer affects: percona-xtradb-cluster-5.6 (Ubuntu Xenial)

** Changed in: systemd (Ubuntu Xenial)
   Status: New => In Progress

** Changed in: systemd (Ubuntu Xenial)
   Importance: Undecided => High

** Changed in: systemd (Ubuntu Xenial)
 Assignee: (unassigned) => Martin Pitt (pitti)

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Title:
  percona cluster hits resource limits in HA Openstack cloud with xenial

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[Bug 1578080] Re: percona cluster hits resource limits in HA Openstack cloud with xenial

[James Page]

Raising systemd task and assigning to Martin...


** Also affects: systemd (Ubuntu)
   Importance: Undecided
   Status: New

** Changed in: systemd (Ubuntu)
 Assignee: (unassigned) => Martin Pitt (pitti)

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Title:
  percona cluster hits resource limits in HA Openstack cloud with xenial

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