[squid-users] Multiple parents

I have a satellite reception dish with an Europe Online account.

As Henrik suggested in a previous discussion :

cache_peer proxy.113.europeonline.net parent 8080 7 no-query login[...]
cache_peer proxy.114.europeonline.net parent 8080 7 no-query login[...]
cache_peer proxy.115.europeonline.net parent 8080 7 no-query login[...]
cache_peer proxy.103.europeonline.net parent 8080 7 no-query login[...]

All are activated. He told me that squid will see that if a peer is
down, it will switch to another one with a delay until a dead peer is
detected.

Due to the nature of the link, only one of these parent caches can be
active at any one time. I wanted to put them all active, so that I
don't have to edit squid.conf and reload config everytime I bring the
link up (modem is used for upload).

The following thing (and it's annoying) happens:
- client issues a request.
- squid attempts to use the first parent in the above list (which is
down, by the way)
- after a very long time, similar to that of a failed DNS lookup or
failed to connect on a direct path, I get the message "peer cache is
down"
- client issues a reload on the URL
- squid tries the second peer, and if down, the same thing happens.

Suppose 103 is up, the rest are down. It takes the client a request and
3 subsequent reloads on an error page until squid gets to use the last
peer in the list and navigation starts to work. Pretty nasty.

Any suggestions on how to change this behaviour? (If possible)

I set connect-timeout=5 (seconds) on the cache_peer line, with no
results.

dead_peer_timeout is not usefull, it's a TCP connection.

connect_timeout seems to influence this, but also gives timeout errors
on slow servers.

peer_connect_timeout, although by description it should address this,
seems to have no effect. I set it to 5 seconds, and my connect still
waits about 2 minutes to timeout, then for the next request, peer is
changed.

ANy help is welcome. Thanks.

=====
ing. Andrei Boros
Centrul pt. Tehnologia Informatiei
Societatea Romana de Radiodifuziune

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Received on Wed May 16 2001 - 01:16:57 MDT