Ensure 'log_disconnections' is enabled

MediumLevel 1Automatedyugabytedb

Description

Enabling the log_disconnections setting logs the end of each session, including session duration. This parameter cannot be changed after the session start. Runs ysqlsh (add the YugabyteDB bin directory to PATH) against PGHOST/PGPORT (default 127.0.0.1:5433) as PGUSER (default yugabyte); supply the password through PGPASSWORD or ~/.pgpass.

How it is checked

Audit method: SQL query

sql_query

out=$(ysqlsh -h "${PGHOST:-127.0.0.1}" -p "${PGPORT:-5433}" -U "${PGUSER:-yugabyte}" -d "${PGDATABASE:-yugabyte}" -tAc "SHOW log_disconnections" 2>/dev/null) || exit 1; printf '%s\n' "$out"

Expected output: on

How it is fixed

Fix method: Guidance or infrastructure patch

Set it with the YB-TServer GFlag --ysql_pg_conf_csv="log_disconnections='on'" on every YB-TServer and restart it.

Properties

Operating systems: Any
Tags: yugabytedblogging
Reference: CIS YugabyteDB Benchmark v2.0.0 - 3.1.18 Ensure 'log_disconnections' is enabled

Check this host

Run this on a machine you are allowed to audit. The scan is read-only.

shell

tmaegis scan --target yugabytedb