When the distribution database could not be read, SQL Server's message
(which names the agent's login) was appended to Unavailable. That text is
the rules' "not measurable" reason and is returned unredacted by
/rule-states and /replication. It is now UnavailableDetail: shown on the
local instance page and [udeladt] in the API unless
ApiIncludesSensitiveEvidence. The agent list is also capped (TOP 500).
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
On a distributor, a 15-minute collector reads each distribution agent's
latest run (status, latency, message) and replication errors the last
day from the distribution database. That needs SELECT on
MSdistribution_agents, MSdistribution_history and MSrepl_errors, which
the agent does not have by default (never the replicated commands);
without it SQLI-REPL-001 (agent failed/retrying, High) and SQLI-REPL-002
(latency > 5 min, Medium) are "not measurable" with the exact grant, and
"not relevant" elsewhere. Shown on the instance page and in
GET /api/v1/instances/{name}/replication. Tested against a real
distributor set up in the SQL 2022 container.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
