Postgresql-100％确定与服务器使用SSL连接吗？

Question

是否可以检查（非root用户/ SQL问题）以检查我从客户端到服务器的连接是否使用SSL（我的目标服务器cas既使用安全连接又使用非安全连接）？

Answer 1

as of 9.5:

https://www.postgresql.org/docs/current/static/monitoring-stats.html#PG-STAT-SSL-VIEW

The pg_stat_ssl view will contain one row per backend or WAL sender process, showing statistics about SSL usage on this connection. It can be joined to pg_stat_activity or pg_stat_replication on the pid column to get more details about the connection.

t=# set role notsu ;
SET
Time: 9.289 ms
t=> select * from pg_stat_ssl where pid = pg_backend_pid();
  pid  | ssl | version | cipher | bits | compression | clientdn
-------+-----+---------+--------+------+-------------+----------
 43767 | f   |         |        |      |             |
(1 row)

Time: 10.846 ms
t=> \du+ notsu
                  List of roles
 Role name | Attributes | Member of | Description
-----------+------------+-----------+-------------
 notsu     |            | {}        |

the above shows my connection is not SSL