fix!: use names not IDs for agent SSH key seed #17258
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mafredri
approved these changes
Apr 4, 2025
| return 42, err | ||
| } | ||
| // null separators between strings so that (dog, foodstuff) is distinct from (dogfood, stuff) | ||
| _, err = h.Write([]byte{0}) |
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Changes the SSH host key seeding to use the owner username, workspace name, and agent name. This prevents SSH from complaining about a mismatched host key if you use Coder Desktop to connect, and delete and recreate your workspace with the same name. Previously this would generate a different key because the workspace ID changed.
We also include the owner's username in anticipation of using Coder Desktop to access shared workspaces (or as a superuser) down the road, so that workspaces with the same name owned by different users will not have the same key.
This change is BREAKING in a limited sense that early access users of Coder Desktop will see their SSH clients complain about host keys changing the first time each workspace is rebuilt with this code. It can be resolved by clearing your
.ssh/known_hostsfile of the Coder workspaces you access this way.