diff options
| author | Ruslan Ermilov <ru@nginx.com> | 2014-02-15 15:12:34 +0400 |
|---|---|---|
| committer | Aleksei Bavshin <a.bavshin@f5.com> | 2024-11-07 07:57:42 -0800 |
| commit | db6870e06dde7ab249e9a41a0e0a76219f82dd8c (patch) | |
| tree | d24f1bb15d855a4a85f1240cc4bbbc9dbf6f74be /src/stream/ngx_stream_ssl_module.c | |
| parent | ebd18ec1812bd6f3de54d9f9fc81563a0ec9f264 (diff) | |
| download | nginx-db6870e06dde7ab249e9a41a0e0a76219f82dd8c.tar.gz nginx-db6870e06dde7ab249e9a41a0e0a76219f82dd8c.zip | |
Upstream: re-resolvable servers.
Specifying the upstream server by a hostname together with the
"resolve" parameter will make the hostname to be periodically
resolved, and upstream servers added/removed as necessary.
This requires a "resolver" at the "http" configuration block.
The "resolver_timeout" parameter also affects when the failed
DNS requests will be attempted again. Responses with NXDOMAIN
will be attempted again in 10 seconds.
Upstream has a configuration generation number that is incremented each
time servers are added/removed to the primary/backup list. This number
is remembered by the peer.init method, and if peer.get detects a change
in configuration, it returns NGX_BUSY.
Each server has a reference counter. It is incremented by peer.get and
decremented by peer.free. When a server is removed, it is removed from
the list of servers and is marked as "zombie". The memory allocated by
a zombie peer is freed only when its reference count becomes zero.
Co-authored-by: Roman Arutyunyan <arut@nginx.com>
Co-authored-by: Sergey Kandaurov <pluknet@nginx.com>
Co-authored-by: Vladimir Homutov <vl@nginx.com>
Diffstat (limited to 'src/stream/ngx_stream_ssl_module.c')
0 files changed, 0 insertions, 0 deletions