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119e50e0cc
A bug in the PROXY protocol v2 implementation was present in HAProxy up to version 2.1, causing it to emit a PROXY command instead of a LOCAL command for health checks. This is particularly minor but confuses some servers' logs. Sadly, the bug was discovered very late and revealed that some servers which possibly only tested their PROXY protocol implementation against HAProxy fail to properly handle the LOCAL command, and permanently remain in the "down" state when HAProxy checks them. When this happens, it is possible to enable this global option to revert to the older (bogus) behavior for the time it takes to contact the affected components' vendors and get them fixed. This option is disabled by default and acts on all servers having the "send-proxy-v2" statement. Older versions were reverted to the old behavior and should not attempt to be fixed by default again. However a variant of this patch could possibly be implemented to ask to explicitly send LOCAL if needed by some servers. More context here: https://www.mail-archive.com/haproxy@formilux.org/msg36890.html https://www.mail-archive.com/haproxy@formilux.org/msg37218.html |
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| .. | ||
| design-thoughts | ||
| internals | ||
| lua-api | ||
| 51Degrees-device-detection.txt | ||
| acl.fig | ||
| architecture.txt | ||
| close-options.txt | ||
| coding-style.txt | ||
| configuration.txt | ||
| cookie-options.txt | ||
| DeviceAtlas-device-detection.txt | ||
| gpl.txt | ||
| haproxy.1 | ||
| intro.txt | ||
| lgpl.txt | ||
| linux-syn-cookies.txt | ||
| lua.txt | ||
| management.txt | ||
| netscaler-client-ip-insertion-protocol.txt | ||
| network-namespaces.txt | ||
| peers-v2.0.txt | ||
| peers.txt | ||
| proxy-protocol.txt | ||
| queuing.fig | ||
| regression-testing.txt | ||
| seamless_reload.txt | ||
| SOCKS4.protocol.txt | ||
| SPOE.txt | ||
| WURFL-device-detection.txt | ||