How to specify a client certificate to psql?

Solution 1:

The end result looks like $>psql "port=5431 host=localhost user=postgres sslcert=./test/client.crt sslkey=./test/client.key sslrootcert=./test/server.crt sslmode=verify-ca"

All the variables are here.

Solution 2:

As stated in the documentation linked by @Milen, you can do this by setting the PGSSLCERT and PGSSLKEY environment variables, or by adding sslcert=<cert location> sslkey=<key location> to the connection string.