Editing Tornedo.tetrain.com Upgrade Plan (section)

== 6. Sequencing against the rest of the fleet ==

Because other servers may authenticate through this one (Step 0.2), schedule this entire 3-hop sequence as its own isolated maintenance activity — not interleaved with the rolling batches for the rest of the fleet. Confirm each hop's soak/validation period is clean before starting the next, and before resuming any other server's upgrade work that depends on this one for auth.