1. 'unavailable' means the server will automatically and temporarily be removed from the pool of servers managed by the upstream (same effect as manually parametering it as down) 2. the fail_timeout parameter documentation of the very section you provided a link to is pretty clear: this value both configure the duration during which the parametered amount of failure must be recorded and the time during which the server will subsequently be unavailable
--- *B. R.* On Wed, Jun 21, 2017 at 3:54 PM, linbo liao <llbg...@gmail.com> wrote: > Hi, > > Refer to http://nginx.org/en/docs/http/ngx_http_upstream_module.html#server > , if all primary server are unavailable, backup server will handle request. > > I have two question? > 1. What's the meaning of unavailable? > 2. When will primary server come back, after fail_timeout? > > Thanks, > Linbo > > > > _______________________________________________ > nginx mailing list > nginx@nginx.org > http://mailman.nginx.org/mailman/listinfo/nginx >
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