If you want to connect withoud ssl, you can try this apporach, by setting a function infront of the postgresql node with this content: msg.pgConfig = { user: 'kafkatopostgresqlv2', // default process.env.PGUSER process.env.USER password: 'changemetoo', // or function, default process.env.PGPASSWORD host: 'united-manufacturing-hub.united-manufacturing-hub.svc.cluster.local', // default process.env.PGHOST database: 'umh_v2', // default process.env.PGDATABASE process.env.USER port: 5432, // default process.env.PGPORT ssl: { rejectUnauthorized: false // SSL is on but verification is not done }, } return msg; Then set in the postgresql node ssl to true and it should work