mysqlcluster: fix the bug about io hang xenon no switch leader radondb#364

Author: acekingke

mysqlcluster/container/mysql.go

@@ -88,7 +88,11 @@ func (c *mysql) getLivenessProbe() *corev1.Probe {
 	return &corev1.Probe{
 		Handler: corev1.Handler{
 			Exec: &corev1.ExecAction{
-				Command: []string{"pgrep", "mysqld"},
+				Command: []string{
+					"sh",
+					"-c",
+					"touch /var/lib/mysql/auto.cnf && pgrep mysqld",
+				},
 			},
 		},
 		InitialDelaySeconds: 30,

mysqlcluster/container/mysql_test.go

@@ -108,7 +108,11 @@ func TestGetMysqlLivenessProbe(t *testing.T) {
 	livenessProbe := &corev1.Probe{
 		Handler: corev1.Handler{
 			Exec: &corev1.ExecAction{
-				Command: []string{"pgrep", "mysqld"},
+				Command: []string{
+					"sh",
+					"-c",
+					"touch /var/lib/mysql/auto.cnf && pgrep mysqld",
+				},
 			},
 		},
 		InitialDelaySeconds: 30,