The previous version piped a heredoc to `ssh -t host bash -s` —
which can't work because `-t` requires a real TTY and heredoc puts
stdin in pipe mode. They're mutually exclusive (orientation.md
gotcha, tripped over once already). The remote sudo therefore aborted
with 'a terminal is required to read the password' before doing
anything.
Restructured: the remote half of each phase is built as a tempfile
locally, scp'd to /tmp on irv-ml1, made executable, and invoked via
`ssh -t host /tmp/upgrade-cuda-remote.sh phase1`. Now stdin is the
real TTY (no pipe), sudo prompts work, and the rest of the script
runs as before.
Same three phases, same rollback behavior, same idempotency story.
Just a transport fix for the local→remote half.
vh
e4a809cfc0