Swift servers can now be seamlessly reloaded by sending them a SIGUSR1
(instead of a SIGHUP). The server forks off a synchronized child to
wait to close the old listen socket(s) until the new server has started
up and bound its listen socket(s). The new server is exec'ed from the
old one so its PID doesn't change. This makes Systemd happier, so a
ReloadExec= stanza can now be used.
The seamless part means that incoming connections will alwyas get
accepted either by the old server or the new one. This eliminates
client-perceived "downtime" during server reloads, while allowing the
server to fully reload, re-reading configuration, becoming a fresh
Python interpreter instance, etc. The SO_REUSEPORT socket option has
already been getting used, so nothing had to change there.
This patch also includes a non-invasive fix for a current eventlet bug;
see https://github.com/eventlet/eventlet/pull/590
That bug prevents a SIGHUP "reload" from properly servicing existing
requests before old worker processes close sockets and exit. The
existing probtests missed this, but the new ones, in this patch, caught
it.
New probe tests cover both old SIGHUP "reload" behavior as well as the
new SIGUSR1 seamless reload behavior.
Change-Id: I3e5229d2fb04be67e53533ff65b0870038accbb7
Update the doc link brought by the swift doc migration.
Although we had some effort to fix these before, it still left lots
of bad doc link, I separate these changes into 3 patches aim to fix
all of these, this is the 1st patch for doc/manpages.
Change-Id: Ib49696706e61bbd36ae56b15b1d94aa4ce84531c
The policy of giving projects vanity domains stopped about 5 years ago.
swift.openstack.org is a redirect to the canonical location -
docs.openstack.org/developer/swift. While we are not aiming to remove
the redirect any time in the forseeable future due to existing published
links pointing to it, we should at the very least stop adding more of
those links to the world.
Change-Id: I10e92309f5d3b5f908fe4438f5cc0b184f161cba
These errors are producing lintian warnings, so fixing them
helps having less errors when checking for Debian packages.
Change-Id: Iff99a8d5f2276515f42d758d110a43cae757db28
This option send SIGKILL to daemon after kill_wait period.
When daemon hangs and doesn't respond to SIGTERM/SIGHUP
there is no way to stop it using swift-init now. Classic
init scripts in Linux kills hanged process after grace
period and this patch add same behaviour. This is most
usefull when using "restart" on hanged daemon.
Change-Id: I8c932b673a0f51e52132df87ea2f4396f4bba9d8
Currently, swift-init returns zero if can't locate config on start.
Because of this problem, it is not possible to distinguish if managed
to start server.
Due to legacy two new complementary options are added. Default is context
dependent.
--strict returns non-zero if some config is missing (default mode
if explicitly named server)
--non-strict returns zero even if some config is missing (default mode
if alias is used)
As a side effect:
If some of demanded servers already running it does not try to start
unstarted and also returns non-zero (in strict mode). That is still sufficient
for the goal of patch.
For future improvements LSB status codes should be considered.
DocImpact
Change-Id: I7750abd4a94875b46f83f4aeee8509388d543c2b
Replaced GA code for cross-domain tracking.
Patchset addresses reviewer's comments
and follows new guidance from Foundation:
http://wiki.openstack.org/Documentation/Copyright
Adds current year to each Sphinx-built page.
Addresses only the docs copyright attribution, not code files.
Change-Id: Ib90fd1c92c8fafce2db821bc2b17cef1377cfc1e
You can now give swift-init a -k N (or --kill-wait N) option to
override the default 15 second wait for a process to die after
sending it the die signal. This is useful for boxes that are awfully
slow for whatever reason.
DocImpact
Change-Id: I328ec254f6e0ee1cd423c1d062ba4c5331bd8337
"Also adding the new swift-recon and swift-ring-builder manpages to this set"
"Adding new manpages for configuration files and also making changes according to previous review suggestions"
"removing the Author line from the manpages according to suggestions"
Change-Id: I256d2b2851b55a379b59011894f214bf55ba7da9
