hi try adding backend probes. see:
https://www.varnish-cache.org/trac/wiki/BackendPolling kt On Mon, Aug 01, 2011 at 06:34:37AM +0000, Thiago Figueiro wrote: > KT Sin wrote: > > the hash director will fail if all the backends are failing. if you > > define a random director with the same set of backends, and if the hash > > director fails, the random director fails too? > > That's not what I'm seeing in my tests. > > I have 8 servers in the hash director and I only took 1 of them offline, the > one a test URL resolves to. If I request a different URL I get a response; > if I request the URL that goes to the offline server I get 503. > > Here are some successful log entries: > 53 RxURL c http://www.westfield.com.au/au/?thiago-1 > 53 Backend c 42 centre_rails centre_rail_ausyd_fap05 > 46 RxURL c http://www.westfield.com.au/au/?thiago-2 > 46 Backend c 41 centre_rails centre_rail_ausyd_fap04 > > If I take fap05 offline and try both URLs again I see an error: > 46 RxURL c http://www.westfield.com.au/au/?thiago-1 > 46 FetchError c no backend connection > 46 TxStatus c 503 > 42 RxURL c http://www.westfield.com.au/au/?thiago-2 > 42 Backend c 41 centre_rails centre_rail_ausyd_fap04 > > So "thiago-1" goes to fap05 and "thiago-2" goes to fap04. If I stop fap05, I > get "FetchError" for "thiago-1", however "thiago-2" responds normally. > > > > ______________________________________________________ > CONFIDENTIALITY NOTICE > This electronic mail message, including any and/or all attachments, is for > the sole use of the intended recipient(s), and may contain confidential > and/or privileged information, pertaining to business conducted under the > direction and supervision of the sending organization. All electronic mail > messages, which may have been established as expressed views and/or opinions > (stated either within the electronic mail message or any of its attachments), > are left to the sole responsibility of that of the sender, and are not > necessarily attributed to the sending organization. Unauthorized > interception, review, use, disclosure or distribution of any such information > contained within this electronic mail message and/or its attachment(s), is > (are) strictly prohibited. If you are not the intended recipient, please > contact the sender by replying to this electronic mail message, along with > the destruction all copies of the original electronic mail message (along > with any attachments). > ______________________________________________________ _______________________________________________ varnish-misc mailing list [email protected] https://www.varnish-cache.org/lists/mailman/listinfo/varnish-misc
