I'm using two HAProxy servers and some nodes behind them. I'd like to let HAProxy trigger a script when it detected any one of the node failures.
I know I can make it drop an email, but it was not what I want. So any ideas? Thanks.
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please, explain what you want to archive with this. – c4f4t0r Sep 22 '17 at 08:12
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I want to purge cache on other nodes. – NeilWang Sep 22 '17 at 08:32
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I think, that you can use in haprox 1.6 external check https://cbonte.github.io/haproxy-dconv/configuration-1.6.html#external-check – c4f4t0r Sep 22 '17 at 08:37
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But this is used to check node status rather than executing a command after one of the nodes failed. – NeilWang Sep 22 '17 at 08:57
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this give you a way to run your own script to check the node status and you can clean the cache of your servers from your script if the node is down. – c4f4t0r Sep 22 '17 at 14:01
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Well, I think it's now working in http mode "[WARNING] 266/115405 (15198) : config : 'external-check command' will be ignored for proxy 'http' (requires 'option external-check')." – NeilWang Sep 23 '17 at 22:54
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do you set option external-check ? – c4f4t0r Sep 24 '17 at 09:45
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Sure, I set in the global section. – NeilWang Sep 25 '17 at 17:25