Ensure server parameter 'log_disconnections' is set to 'ON' for PostgreSQL Database Server

MediaNivel 1Automatizadaalibaba

Descripción

Enable log_disconnections on PostgreSQL Servers. Enabling log_disconnections helps PostgreSQL Database to log session terminations of the server, as well as duration of the session. Log data can be used to identify, troubleshoot, and repair configuration errors and ... For every PostgreSQL instance the running parameter log_disconnections must be on. Iterates every RDS region and instance (DescribeDBInstances). Read-only aliyun CLI calls; credentials and default region come from the CLI's normal profile (aliyun configure, ~/.aliyun/config.json or ALIBABA_CLOUD_* environment variables). JSON output is parsed with sed/awk. A missing CLI or credential fails the check.

Cómo se verifica

Método de auditoría: Comando de shell

shell

regs=$(aliyun rds DescribeRegions 2>/dev/null) || exit 1
regions=$(printf '%s\n' "$regs" | sed -n 's/.*"RegionId"[[:space:]]*:[[:space:]]*"\([^"]*\)".*/\1/p' | sort -u)
[ -n "$regions" ] || exit 1
bad=0
for r in $regions; do
  page=1
  while :; do
    out=$(aliyun rds DescribeDBInstances --RegionId "$r" --Engine PostgreSQL --PageSize 100 --PageNumber "$page" 2>/dev/null) || exit 1
    ids=$(printf '%s\n' "$out" | sed -n 's/.*"DBInstanceId"[[:space:]]*:[[:space:]]*"\([^"]*\)".*/\1/p' | sort -u)
    [ -n "$ids" ] || break
    for i in $ids; do
      p=$(aliyun rds DescribeParameters --DBInstanceId "$i" 2>/dev/null) || exit 1
      v=$(printf '%s\n' "$p" | awk '
/\{/ { nm = ""; vl = "" }
/"ParameterName"/ { nm = $0; sub(/^[^:]*:[[:space:]]*"/, "", nm); sub(/".*/, "", nm) }
/"ParameterValue"/ { vl = $0; sub(/^[^:]*:[[:space:]]*"/, "", vl); sub(/".*/, "", vl) }
/\}/ { if (nm == "log_disconnections") { print tolower(vl); exit } }')
      [ "$v" = on ] || { echo "log_disconnections=${v:-unset}: $r $i"; bad=1; }
    done
    set -- $ids
    [ "$#" -lt 100 ] && break
    page=$((page + 1))
  done
done
[ "$bad" -eq 0 ] && echo compliant

Salida esperada: compliant

Cómo se corrige

Método de corrección: Guía o parche de infraestructura

aliyun rds ModifyParameter --DBInstanceId <id> --Parameters '{"log_disconnections":"on"}' (RDS console > Parameters), then confirm the running value.

Propiedades

Sistemas operativos: Cualquiera
Etiquetas: alibabards
Referencia: CIS Alibaba Cloud Foundation Benchmark v2.0.1 - 6.8 Ensure server parameter 'log_disconnections' is set to 'ON' for PostgreSQL Database Server

Verificar este host

Ejecute esto en un equipo que tenga permiso para auditar. El escaneo es de solo lectura.

shell

tmaegis scan --target alibaba