https://bugzilla.wikimedia.org/show_bug.cgi?id=71212
Bug ID: 71212
Summary: Make it possible to quickly and programmaticly pool
and depool application servers
Product: Wikimedia
Version: wmf-deployment
Hardware: All
OS: All
Status: NEW
Severity: normal
Priority: Unprioritized
Component: Apache configuration
Assignee: [email protected]
Reporter: [email protected]
Web browser: ---
Mobile Platform: ---
HHVM takes more time to initialize than PHP5, because it needs to translate PHP
to byte code, analyze the types flowing through the code, and then compile the
byte code down to machine code. This process takes a few minutes, but during
that time the application server is too slow to serve user requests.
Because this is the case, it is essential to avoid a cold restart of the entire
production cluster. We need to have a staggered deployment process that allows
us to take servers offline while they are warming up and then bring them back
online once they're ready.
To meet these requirements, we need better automation. The current process for
adding and removing servers from the pool serving user requests is too slow and
too manual.
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