diff --git a/plugins/postgresql/postgresql.go b/plugins/postgresql/postgresql.go
index 812d39750..85479577d 100644
--- a/plugins/postgresql/postgresql.go
+++ b/plugins/postgresql/postgresql.go
@@ -89,7 +89,7 @@ func (p *Postgresql) gatherServer(serv *Server, acc plugins.Accumulator) error {
 		defer rows.Close()
 
 		for rows.Next() {
-			err := p.accRow(rows, acc)
+			err := p.accRow(rows, acc, serv.Address)
 			if err != nil {
 				return err
 			}
@@ -100,7 +100,7 @@ func (p *Postgresql) gatherServer(serv *Server, acc plugins.Accumulator) error {
 		for _, name := range serv.Databases {
 			row := db.QueryRow(`SELECT * FROM pg_stat_database WHERE datname=$1`, name)
 
-			err := p.accRow(row, acc)
+			err := p.accRow(row, acc, serv.Address)
 			if err != nil {
 				return err
 			}
@@ -114,7 +114,7 @@ type scanner interface {
 	Scan(dest ...interface{}) error
 }
 
-func (p *Postgresql) accRow(row scanner, acc plugins.Accumulator) error {
+func (p *Postgresql) accRow(row scanner, acc plugins.Accumulator, server string) error {
 	var ignore interface{}
 	var name string
 	var commit, rollback, read, hit int64
@@ -135,7 +135,7 @@ func (p *Postgresql) accRow(row scanner, acc plugins.Accumulator) error {
 		return err
 	}
 
-	tags := map[string]string{"db": name}
+	tags := map[string]string{"server": server, "db": name}
 
 	acc.Add("xact_commit", commit, tags)
 	acc.Add("xact_rollback", rollback, tags)
diff --git a/plugins/redis/redis.go b/plugins/redis/redis.go
index 2b56ac8c3..2dd184a12 100644
--- a/plugins/redis/redis.go
+++ b/plugins/redis/redis.go
@@ -157,11 +157,12 @@ func (g *Redis) gatherServer(addr string, acc plugins.Accumulator) error {
 			continue
 		}
 
+		tags := map[string]string{"host": addr}
 		val := strings.TrimSpace(parts[1])
 
 		ival, err := strconv.ParseUint(val, 10, 64)
 		if err == nil {
-			acc.Add(metric, ival, nil)
+			acc.Add(metric, ival, tags)
 			continue
 		}
 
@@ -170,7 +171,7 @@ func (g *Redis) gatherServer(addr string, acc plugins.Accumulator) error {
 			return err
 		}
 
-		acc.Add(metric, fval, nil)
+		acc.Add(metric, fval, tags)
 	}
 
 	return nil