add setting for WAL segment size - https://gitlab.confdroid.com/internal/confdroid_management/-/issues/260

templates/override.conf.erb

@@ -9,6 +9,7 @@ ExecStart=/usr/bin/prometheus \
   --storage.tsdb.path=/var/lib/prometheus \
   --storage.tsdb.retention.time=<%= @ps_retention_time %> \
   --storage.tsdb.retention.size=<%= @ps_retention_size %> \
+  --storage.tsdb.wal-segment-size=<%= @psps_wal_seg_size %> \
   --web.enable-remote-write-receiver \
   --web.enable-lifecycle \
   --storage.tsdb.wal-compression