openstack/oslo.service
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Document graceful_shutdown_timeout config option

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In change I0dfbf2d0a4943337da24c0904a1ed6f0cdccd77b
option graceful_shutdown_timeout was added.

Change-Id: I7564fc97dbe8fbbfc9f3b36e4dfbfabc078495e2
This commit is contained in:
Marian Horban 2015-10-27 14:39:05 -04:00
parent 50e115599e
commit 15d0290a9a
1 changed files with 8 additions and 2 deletions
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10
doc/source/usage.rst
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@ -135,8 +135,13 @@ and SIGHUP.
SIGTERM is used for graceful termination of services. This can allow a
server to wait for all clients to close connections while rejecting new
incoming requests. To force instantaneous termination SIGINT signal must
be sent.
incoming requests. Config option graceful_shutdown_timeout specifies how
many seconds after receiving a SIGTERM signal, a server should continue
to run, handling the existing connections. Setting graceful_shutdown_timeout
to zero means that the server will wait indefinitely until all remaining
requests have been fully served.
To force instantaneous termination SIGINT signal must be sent.
On receiving SIGHUP configuration files are reloaded and a service
is being reset and started again. Then all child workers are gracefully
@ -144,6 +149,7 @@ stopped using SIGTERM and workers with new configuration are
spawned. Thus, SIGHUP can be used for changing config options on the go.
*NOTE:* SIGHUP is not supported on Windows.
*NOTE:* Config option graceful_shutdown_timeout is not supported on Windows.
Below is the example of a service with a reset method that allows reloading
logging options by sending a SIGHUP.