Author: eelco
Date: Tue May 22 21:00:16 2012
New Revision: 34214
URL: https://nixos.org/websvn/nix/?rev=34214&sc=1
Log:
* Disable persistent HTTP connections between Apache mod_proxy and the
Hydra backend. This seems to prevent random corrupt output (i.e.,
pages consisting only of "0").
It seems that sometimes mod_proxy decides not to forward the request
to the backend. For instance,
$ curl --head http://hydra.nixos.org/foo.svg
normally prints (among other headers)
HTTP/1.1 404 Not Found
Content-Type: text/html; charset=utf-8
(because /foo.svg doesn't exist), but sometimes it will say
HTTP/1.1 200 OK
Content-Length: 1
Content-Type: image/svg+xml
After such a HEAD request, a subsequent GET request is likely to
print "0". It's worth mentioning that Starman's documentation for
its ‘--disable-keepalive’ option says:
an useful workaround if you run Starman behind a broken frontend
proxy that tries to pool connections more than a number of backend
workers (i.e. Apache mpm_prefork + mod_proxy).
whatever that means.
Modified:
configurations/trunk/tud/cartman.nix
Modified: configurations/trunk/tud/cartman.nix
==============================================================================
--- configurations/trunk/tud/cartman.nix Tue May 22 19:46:37 2012
(r34213)
+++ configurations/trunk/tud/cartman.nix Tue May 22 21:00:16 2012
(r34214)
@@ -232,7 +232,7 @@
#"15 0 * * * root (TZ=CET date; ${pkgs.rsync}/bin/rsync -razv
--numeric-ids --delete /data/postgresql /data/webserver/tarballs
unixhome.st.ewi.tudelft.nl::bfarm/) >> /var/log/backup.log 2>&1"
"0 3 * * * root nix-store --gc --max-freed \"$((50 * 1024**3 - 1024
* $(df /nix/store | tail -n 1 | awk '{ print $4 }')))\" > /var/log/gc.log 2>&1"
"* * * * * root ${pkgs.python}/bin/python ${ZabbixApacheUpdater}
-z 192.168.1.5 -c cartman"
- "40 * * * * ${duplicityBackup} &>> /var/log/backup-duplicity.log"
+ "40 * * * * root ${duplicityBackup} &>>
/var/log/backup-duplicity.log"
# Force the sixxs tunnel to stay alive by periodically
# pinging the other side. This is necessary to remain
@@ -470,7 +470,7 @@
ProxyRequests Off
ProxyPreserveHost On
- ProxyPass / http://lucifer:3000/ retry=5
+ ProxyPass / http://lucifer:3000/ retry=5
disablereuse=on
ProxyPassReverse / http://lucifer:3000/
<Location />
@@ -494,7 +494,7 @@
ProxyRequests Off
ProxyPreserveHost On
- ProxyPass / http://wendy:4000/ retry=5
+ ProxyPass / http://wendy:4000/ retry=5
disablereuse=on
ProxyPassReverse / http://wendy:4000/
'';
}
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