On 30/01/2018 2.35, Jeremy wrote:
Does sdc have any HA? For example, if you make a new usb with current
updates, do you need to bring the whole node down with all VMs just to
get the updates, or is there a better approach.
a good way of handling HA on Triton is to use replication functionality
provided by particular application instead of relying on VMware type of
functionality when node dies,
which in most cases really isn't "HA" (it's Failover) because the VM
needs to be brought up elsewhere after the node suddenly dies.
ie. if you are running a email server for example using Postfix you
could use Dovecot's dsync feature to replicate the actual email between
multiple instances:
https://wiki.dovecot.org/Replication
There is also Container Name Service (CNS) which can be utilized to
certain extent if planned accordingly with the application deployment:
https://docs.joyent.com/public-cloud/network/cns
Then there is Autopilotpattern / Containerpilot:
https://www.joyent.com/blog/dockercon17-turbocharged-compose
https://www.joyent.com/blog/stateful-applications-on-autopilot
https://www.joyent.com/blog/dbaas-simplicity-no-lock-in
https://www.joyent.com/blog/using-docker-compose
https://www.joyent.com/blog/rolling-deploys-with-compose
(the Docker stuff with Containerpilot might be little bit out of scope
of this discussion but it's worth checking out).
Joyent Blog has good deal of information with what's possible and how
things should be deployed in scale for redundancy:
https://www.joyent.com/blog
--
-Jussi Sallinen
[email protected]
https://jus.si/
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