I'm stating the obvious here, but it looks like a permissions problem on that directory or file.
At minimum you should: 1. identify what uid alertmanager is running as, and what working directory it's running in 2. check permissions on the "data" subdirectory, and all files in that directory -- You received this message because you are subscribed to the Google Groups "Prometheus Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/prometheus-users/f37b3a7d-b74f-4a3e-871a-26494c54a563o%40googlegroups.com.
