gssencmode

default evidence

if there are GSSAPI credentials present (i.e., in a credentials cache), first try a GSSAPI -encrypted connection; if that fails or there are no credentials, try a non- GSSAPI -encrypted connection. This is the default when PostgreSQL has been compiled with GSSAPI support.

precedence evidence

The following environment variables can be used to select default connection parameter values, which will be used by PQconnectdb , PQsetdbLogin and PQsetdb if no value is directly specified by the calling code. These are useful to avoid hard-coding database connection information into simple client applications, for example., Service names can be defined in either a per-user service file or a system-wide file. If the same service name exists in both the user and the system file, the user file takes precedence. By default, the per-user service file is named ~/.pg_service.conf . On Microsoft Windows, it is named %APPDATA%\postgresql\.pg_service.conf (where %APPDATA% refers to the Application Data subdirectory in the user's profile). A different file name can be specified by setting the environment variable PGSERVICEFILE . The system-wide file is named pg_service.conf . By default it is sought in the etc directory of the PostgreSQL installation (use pg_config --sysconfdir to identify this directory precisely). Another directory, but not a different file name, can be specified by setting the environment variable PGSYSCONFDIR ., Connection parameters obtained from a service file are combined with parameters obtained from other sources. A service file setting overrides the corresponding environment variable, and in turn can be overridden by a value given directly in the connection string. For example, using the above service file, a connection string service=mydb port=5434 will use host somehost , port 5434 , user admin , and other parameters as set by environment variables or built-in defaults.

source option

{"compiled_default_expression":"DefaultGSSMode","declaration":"\"gssencmode\", \"PGGSSENCMODE\", DefaultGSSMode, NULL, \"GSSENC-Mode\", \"\", 8, offsetof(struct pg_conn, gssencmode)","environment":"PGGSSENCMODE","keyword":"gssencmode","source_notes":[]}