I have a problem when starting the debian server on which throws me an alert by starting.
No PostgresSQL clusters exist: see "man pg_createcluster" .. (warning)
It is not a definitive answer but because I do not have the necessary reputation I can not comment. I would suggest that you verify that the PostgreSQL service finds the route where the cluster is usually installed by default (it may vary depending on the platform but it is usually / var / lib / postgresql / XX / main).