But what about migrations? Do they respect upgrades between new releases? How do you manage to solve the case when new release makes breaking changes in db?

Can you explain you question, keeping in mind that each rebuild will run db:migrate

If one of the docker container makes breaking changes in db how do they share the same db in production?

I still do not understand your question, slowly, can you explain clearly what you are asking for … and first read this: templates/web.template.yml master filename: "/etc/nginx/conf.d/discourse.conf" from: /client_max_body_size.+$/ to: client…

[图片] Manually update Discourse and Docker image to latest If you want zero downtime, you must run 2 web containers and cycle them in and out using haproxy So, one container in public and the second one is on stage. Let’s imagine that the second one goes with migration which makes breaking chan…

As far as I understand you, both of the containers will share the same db. Am I right?

breaking db changes will always cause downtime we can not magic that away

It’s possible by making them responsible for old code and some kind of convention, imho.

Otherwise, people have to observe migrations that you have done.

I have no idea what you are proposing here and am having extreme issues following you. IF we decide one day to rename the table topics to amazing-topics then old web servers running our old repo will break. Only way to keep them working under such conditions is to create a writable view during the …

[图片] sam: Only way to keep them working under such conditions is to create a writable view during the migration that keeps backwards compat in place. In general our migrations are backwards compat. Rarely they are not, when they are not there is a minor outage. This is exactly what I’m talki…

Can you upgrade Discourse seamlessly if there is a breaking db change?

Product Support

sam (Sam Saffron) 2018 年9 月 28 日 00:38 14

Our current practices are to always ensure all upgrades from direct previous versions never ship breaking scheme

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Can you upgrade Discourse seamlessly if there is a breaking db change?

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