↑↓ select↵ open⌫ change scopeOpen full search

PG.CENTER connects PostgreSQL documentation, reference, and ecosystem knowledge. Maintained by Pigsty.

Wiki / Connection Parameters

sslkeylogfile

This parameter specifies the location where libpq will log keys used in this SSL context. This is useful for debugging PostgreSQL protocol interactions or client connections using network inspection tools like Wireshark . This parameter is ignored if an SSL connection is not made, or if LibreSSL is used ( LibreSSL does not support key logging). Keys are logged using the NSS format.

Reading PG 18·Select a recorded version

Client library
libpq 18.6
Manual definition
Documented
Source environment fallback
None declared in the option table
Compiled fallback expression
NULL
default evidence
Unknown
documented
true
environment
Unknown
keyword
sslkeylogfile
manual path
libpq-connect.html#LIBPQ-CONNECT-SSLKEYLOGFILE
signature
sslkeylogfile

Definition PG 18

sslkeylogfile

This parameter specifies the location where libpq will log keys used in this SSL context. This is useful for debugging PostgreSQL protocol interactions or client connections using network inspection tools like Wireshark. This parameter is ignored if an SSL connection is not made, or if LibreSSL is used (LibreSSL does not support key logging). Keys are logged using the NSS format.

Warning

Key logging will expose potentially sensitive information in the keylog file. Keylog files should be handled with the same care as sslkey files.

Compare versions

Complete source facts

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":"NULL","declaration":"\"sslkeylogfile\", NULL, NULL, NULL, \"SSL-Key-Log-File\", \"D\", 64, offsetof(struct pg_conn, sslkeylogfile)","environment":"","keyword":"sslkeylogfile","source_notes":[]}

Source references

Full definition and evidence JSON

Definition sources

center · PostgreSQL 18 · ee8d1a3612338fd9adf250730cb640fcc5233b5491337cc00a316a44e3a0b9f8

Text language: en · ee8d1a3612338fd9adf250730cb640fcc5233b5491337cc00a316a44e3a0b9f8