High Availability

[calebmeyer]

Can this app be set up for high availability? If you have a cluster, can you have a load balancer, at least two application nodes, and several mongo nodes?

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[Sing-Li]

We need to try it in a lab environment. Configure a mongo replica set with op log. Load balancer needs to support sticky sessions if you have old browsers and/or older mobile clients. @calebmeyer -- do you have access to test facilities for HA configurations? If issues are found in such configurations - we can fix them. (note - some optional packages, such as file-upload to local filesystem, are by design not HA compatible)

[calebmeyer]

I have access to some testing facilities. I will be trying this out. Can you recommend a load balancer?

[Sing-Li]

haproxy? Other community members may have more experience with other software load balancers. Please keep us posted on how it goes.

[geekgonecrazy]

I enjoy playing with these things. I'll give this a go.

So things wanted tested?

• cluster mongodb (couple nodes)
• rocket.chat (couple instances. Pointing to the master of the mongo cluster)
• load balancer (haproxy or nginx)

Anything else? I guess rattle it a bit and see what bolts fall out? :D

[Sing-Li]

My 2c

• variety of client browser/devices (especially IE versions)
• force-fail mongo instance; force-fail meteor instance; observe interruption in user experience - expected to see some UI anomalies due to delayed session recovery/fail-over, but no data lost

[Sing-Li]

@calebmeyer any update on experiments with clusters of more than 4 RC instances? Thanks.

[calebmeyer]

I have logged a JIRA for access to my organization's openstack cluster, I'm just waiting on a response. I'll keep you posted.

[Sing-Li]

Thanks, @calebmeyer ! 👍

[Sing-Li]

#769 <---- where are the HA guys when we really need them?! 😀

[geekgonecrazy]

We need to do some testing this weekend

[leefaus]

@geekgonecrazy @Sing-Li

I have an HA solution up and running at Google Cloud. Here is the private Gist that describes what I did. I still need to tweak some of the docs, but it is running famously at http://130.211.152.251/.