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Replace Traefik with parachute

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[mproxy](https://github.com/basecamp/parachute) is a custom minimal
proxy designed specifically for Kamal.

It has two big advantages over Traefik:
1. Imperative deployments - we tell it to switch from container A to
   container B, and it waits for container B to start then switches. No
   need to poll for health checks ourselves or mess around with forcing
   health checks to fail.
2. Support for multiple apps - as much as possible, configuration is
   supplied at runtime by the deploy command, allowing us to have
   multiple apps share an instance of mproxy without conflicting config.
This commit is contained in:
Donal McBreen
2024-03-08 08:19:48 +00:00
parent 10b8c826d8
commit 822590dcf6
66 changed files with 754 additions and 1161 deletions
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8
test/commander_test.rb
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@@ -136,18 +136,18 @@ class CommanderTest < ActiveSupport::TestCase
assert_equal [ "1.1.1.3", "1.1.1.4", "1.1.1.1", "1.1.1.2" ], @kamal.hosts
end
test "traefik hosts should observe filtered roles" do
test "proxy hosts should observe filtered roles" do
configure_with(:deploy_with_aliases)
@kamal.specific_roles = [ "web_tokyo" ]
assert_equal [ "1.1.1.3", "1.1.1.4" ], @kamal.traefik_hosts
assert_equal [ "1.1.1.3", "1.1.1.4" ], @kamal.proxy_hosts
end
test "traefik hosts should observe filtered hosts" do
test "proxy hosts should observe filtered hosts" do
configure_with(:deploy_with_aliases)
@kamal.specific_hosts = [ "1.1.1.4" ]
assert_equal [ "1.1.1.4" ], @kamal.traefik_hosts
assert_equal [ "1.1.1.4" ], @kamal.proxy_hosts
end
private