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kevinveenbirkenbachandClaude Opus 5
9ad1a1a8a4
hostname(1) is not installed in every node image. In run 30830377785 the arch
drill printed
trigger_units.sh: line 22: hostname: command not found
starting svc-bkp-local-2-device.11.6.0.infinito.nexus.service on
so the node name came out empty on all three call sites. The cosmetic one is the
progress line; the damaging one is the journal dump path, which becomes
"${unit}..journal.txt" and is identical on every node. Four hosts writing the
same filename into the shared dumps directory means the artifact keeps whichever
one wrote last, and a unit failure gets investigated against another host's
journal.
uname is coreutils and present wherever the drill runs. Reading it once also
drops three subshells from the loop.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
34 lines
1.3 KiB
Bash
Executable File
34 lines
1.3 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Runs in-node. Starts every installed systemd unit matching a pattern.
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#
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# Arguments:
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# $1 PATTERN systemd unit glob (e.g. 'svc-bkp-volume-2-local*.service')
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# $2 DUMPS directory the full journal of a failed unit is written to
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#
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# Exit codes: 0 all units completed, 1 a unit failed (journal dumped),
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# 2 no unit matches the pattern (caller decides whether that is fatal). The
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# `|| true` is load-bearing: list-unit-files exits 1 on an empty glob, and
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# under pipefail that would kill the script before the exit-2 contract runs.
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set -euo pipefail
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PATTERN="${1:?usage: trigger_units.sh PATTERN DUMPS}"
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DUMPS="${2:?usage: trigger_units.sh PATTERN DUMPS}"
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units="$(systemctl list-unit-files "${PATTERN}" --no-legend | awk '{print $1}' || true)"
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[ -n "${units}" ] || exit 2
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NODE="$(uname -n)"
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while read -r unit; do
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[ -n "${unit}" ] || continue
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echo " starting ${unit} on ${NODE}"
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if ! systemctl start "${unit}"; then
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mkdir -p "${DUMPS}"
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dump="${DUMPS}/${unit}.${NODE}.journal.txt"
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journalctl -u "${unit}" --no-pager -o short-iso >"${dump}" 2>/dev/null || true
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echo "FAILURE: ${unit} did not complete on ${NODE}; full journal at ${dump}"
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journalctl -u "${unit}" --no-pager -o cat -n 40 2>/dev/null || true
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exit 1
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fi
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done <<<"${units}"
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