"swarm services short on swarm is 6." becomes "6 swarm services are
short of their replicas.", with a Which line naming each service and how
many of its tasks run. The swarm figures get labels, and the counting
figures (swarm, mounts, drives, updates) read as sentences in the email,
its subject and the Alerts page. A plugin names what its count counts
through core.alerts.names_behind; the Docker plugin does for the three
swarm figures, from the stored swarm. Webhooks get alert.which too.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
#5335 "Emails Steward sends read as designed messages: an HTML alert email
and weekly report, with a plain-text twin".
- core/mail.py renders each email as multipart/alternative from
templates/email/: a table-and-inline-style HTML part and a plain-text
twin carrying the same facts. Colours are the design system's light
theme, resolved from theme.css; nothing is fetched when a mail opens.
- Alert email: state badge, a headline sentence ("Disk used on web01 is
94%."), rule, resource, reading, the condition in words, and the time in
the zone Notifications was saved in with UTC beside it; "View in
Steward" when Steward's address is set. Subject "[Steward] Firing: <rule>
— <resource> 94%". Alerts now carry their operator.
- Weekly report: monitors down, active alerts, the week's alert events,
uptime and busiest Traefik routers as small tables with links. Sent from
the configured From address; the "Generated … UTC" line and the stale
repo footer are gone.
- condition_text() states a condition from a rule's parts.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>