Fix pgbouncer input when used with newer pgbouncer versions (#6820)

plugins/inputs/pgbouncer/pgbouncer.go

@@ -2,6 +2,7 @@ package pgbouncer
 
 import (
 	"bytes"
+	"strconv"
 
 	"github.com/influxdata/telegraf"
 	"github.com/influxdata/telegraf/internal"
@@ -70,12 +71,18 @@ func (p *PgBouncer) Gather(acc telegraf.Accumulator) error {
 		for col, val := range columnMap {
 			_, ignore := ignoredColumns[col]
 			if !ignore {
-				fields[col] = *val
+				// these values are returned by pgbouncer as strings, which we need to convert.
+				fields[col], _ = strconv.ParseUint((*val).(string), 10, 64)
 			}
 		}
 		acc.AddFields("pgbouncer", fields, tags)
 	}
 
+	err = rows.Err()
+	if err != nil {
+		return err
+	}
+
 	query = `SHOW POOLS`
 
 	poolRows, err := p.DB.Query(query)

plugins/inputs/postgresql/service.go

@@ -122,6 +122,13 @@ func (p *Service) Start(telegraf.Accumulator) (err error) {
 						Name:  "int8OID",
 						OID:   pgtype.Int8OID,
 					})
+					// Newer versions of pgbouncer need this defined. See the discussion here:
+					// https://github.com/jackc/pgx/issues/649
+					info.RegisterDataType(pgtype.DataType{
+						Value: &pgtype.OIDValue{},
+						Name:  "numericOID",
+						OID:   pgtype.NumericOID,
+					})
 
 					return info, nil
 				},