diff --git a/cluster_test.go b/cluster_test.go
index a585ad7..fe004c9 100644
--- a/cluster_test.go
+++ b/cluster_test.go
@@ -230,9 +230,53 @@ var _ = Describe("Cluster", func() {
 		})
 
 		It("should CLUSTER KEYSLOT", func() {
-			res, err := cluster.primary().ClusterKeySlot("somekey").Result()
+			hashSlot, err := cluster.primary().ClusterKeySlot("somekey").Result()
 			Expect(err).NotTo(HaveOccurred())
-			Expect(res).To(Equal(int64(11058)))
+			Expect(hashSlot).To(Equal(int64(11058)))
+		})
+
+		It("should CLUSTER COUNT-FAILURE-REPORTS", func() {
+			n, err := cluster.primary().ClusterCountFailureReports(cluster.nodeIds[0]).Result()
+			Expect(err).NotTo(HaveOccurred())
+			Expect(n).To(Equal(int64(0)))
+		})
+
+		It("should CLUSTER COUNTKEYSINSLOT", func() {
+			n, err := cluster.primary().ClusterCountKeysInSlot(10).Result()
+			Expect(err).NotTo(HaveOccurred())
+			Expect(n).To(Equal(int64(0)))
+		})
+
+		It("should CLUSTER DELSLOTS", func() {
+			res, err := cluster.primary().ClusterDelSlotsRange(16000, 16384-1).Result()
+			Expect(err).NotTo(HaveOccurred())
+			Expect(res).To(Equal("OK"))
+			cluster.primary().ClusterAddSlotsRange(16000, 16384-1)
+		})
+
+		It("should CLUSTER SAVECONFIG", func() {
+			res, err := cluster.primary().ClusterSaveConfig().Result()
+			Expect(err).NotTo(HaveOccurred())
+			Expect(res).To(Equal("OK"))
+		})
+
+		It("should CLUSTER SLAVES", func() {
+			nodesList, err := cluster.primary().ClusterSlaves(cluster.nodeIds[0]).Result()
+			Expect(err).NotTo(HaveOccurred())
+			Expect(nodesList).Should(ContainElement(ContainSubstring("slave")))
+			Expect(nodesList).Should(HaveLen(1))
+		})
+
+		It("should CLUSTER READONLY", func() {
+			res, err := cluster.primary().Readonly().Result()
+			Expect(err).NotTo(HaveOccurred())
+			Expect(res).To(Equal("OK"))
+		})
+
+		It("should CLUSTER READWRITE", func() {
+			res, err := cluster.primary().ReadWrite().Result()
+			Expect(err).NotTo(HaveOccurred())
+			Expect(res).To(Equal("OK"))
 		})
 	})
 
diff --git a/commands.go b/commands.go
index ef615b0..215f414 100644
--- a/commands.go
+++ b/commands.go
@@ -1705,6 +1705,68 @@ func (c *commandable) ClusterKeySlot(key string) *IntCmd {
 	return cmd
 }
 
+func (c *commandable) ClusterCountFailureReports(nodeID string) *IntCmd {
+	cmd := NewIntCmd("CLUSTER", "count-failure-reports", nodeID)
+	cmd._clusterKeyPos = 2
+	c.Process(cmd)
+	return cmd
+}
+
+func (c *commandable) ClusterCountKeysInSlot(slot int) *IntCmd {
+	cmd := NewIntCmd("CLUSTER", "countkeysinslot", slot)
+	cmd._clusterKeyPos = 2
+	c.Process(cmd)
+	return cmd
+}
+
+func (c *commandable) ClusterDelSlots(slots ...int) *StatusCmd {
+	args := make([]interface{}, 2+len(slots))
+	args[0] = "CLUSTER"
+	args[1] = "DELSLOTS"
+	for i, slot := range slots {
+		args[2+i] = slot
+	}
+	cmd := newKeylessStatusCmd(args...)
+	c.Process(cmd)
+	return cmd
+}
+
+func (c *commandable) ClusterDelSlotsRange(min, max int) *StatusCmd {
+	size := max - min + 1
+	slots := make([]int, size)
+	for i := 0; i < size; i++ {
+		slots[i] = min + i
+	}
+	return c.ClusterDelSlots(slots...)
+}
+
+func (c *commandable) ClusterSaveConfig() *StatusCmd {
+	cmd := newKeylessStatusCmd("CLUSTER", "saveconfig")
+	c.Process(cmd)
+	return cmd
+}
+
+func (c *commandable) ClusterSlaves(nodeID string) *StringSliceCmd {
+	cmd := NewStringSliceCmd("CLUSTER", "SLAVES", nodeID)
+	cmd._clusterKeyPos = 2
+	c.Process(cmd)
+	return cmd
+}
+
+func (c *commandable) Readonly() *StatusCmd {
+	cmd := newKeylessStatusCmd("READONLY")
+	cmd._clusterKeyPos = 0
+	c.Process(cmd)
+	return cmd
+}
+
+func (c *commandable) ReadWrite() *StatusCmd {
+	cmd := newKeylessStatusCmd("READWRITE")
+	cmd._clusterKeyPos = 0
+	c.Process(cmd)
+	return cmd
+}
+
 func (c *commandable) ClusterFailover() *StatusCmd {
 	cmd := newKeylessStatusCmd("CLUSTER", "failover")
 	c.Process(cmd)