suggestions for what to run in front of ZEO'ed zopes for failover?
I'm wondering if anyone can suggest something good to run in front of 2 zopes talking to a zeo server - for failover and load balancing. I have been using a tool called 'balance' which works really well - but for failover it only works if the socket to one of the zope servers doesn't connect. We occasionally have a situation where the socket will still answer but the zope server hanges and never returns an answer. So, I'm looking for something with configurable timeouts on responses. Does any one know of anything like that? Thanks, ^Roman
Roman Milner wrote:
I'm wondering if anyone can suggest something good to run in front of 2 zopes talking to a zeo server - for failover and load balancing. I have been using a tool called 'balance' which works really well - but for failover it only works if the socket to one of the zope servers doesn't connect.
We occasionally have a situation where the socket will still answer but the zope server hanges and never returns an answer. So, I'm looking for something with configurable timeouts on responses. Does any one know of anything like that?
You didn't specify the platform, so I'll suggest a nice, cost-effective one: Linux with IPVS (IP Virtual Server). www.linux-ha.com has more information. -- Do not meddle in the affairs of sysadmins, for they are easy to annoy, and have the root password.
On Fri, 14 Jul 2000 14:12:33 -0600, Bill Anderson <bill@libc.org> wrote:
Roman Milner wrote:
I'm wondering if anyone can suggest something good to run in front of 2 zopes talking to a zeo server - for failover and load balancing. I have been using a tool called 'balance' which works really well - but for failover it only works if the socket to one of the zope servers doesn't connect.
We occasionally have a situation where the socket will still answer but the zope server hanges and never returns an answer. So, I'm looking for something with configurable timeouts on responses. Does any one know of anything like that?
You didn't specify the platform, so I'll suggest a nice, cost-effective one: Linux with IPVS (IP Virtual Server). www.linux-ha.com has more information.
That looks good on paper, and I may be setting up a trial system next month. One disadvantage is that solution is that each Zope will have poor locality-of-reference within the object database. I think I can avoid that using a squid redirector (www.squid-cache.org). Ill post any news. Toby Dickenson tdickenson@geminidataloggers.com
participants (3)
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Bill Anderson -
Roman Milner -
Toby Dickenson