polish conf comments

conf/redis-shake.conf

@@ -35,12 +35,12 @@ source.type = standalone
 # ip:port
 # the source address can be the following:
 #   1. single db address. for "standalone" type.
-#   2. ${sentinel_master_name}:${master or slave}@sentinel single/cluster address, e.g., mymaster:master@127.0.0.1:26379;127.0.0.1:26380. for "sentinel" type.
+#   2. ${sentinel_master_name}:${master or slave}@sentinel single/cluster address, e.g., mymaster:master@127.0.0.1:26379;127.0.0.1:26380, or @127.0.0.1:26379;127.0.0.1:26380. for "sentinel" type.
 #   3. cluster that has several db nodes split by semicolon(;). for "cluster" type. e.g., 10.1.1.1:20331;10.1.1.2:20441.
 #   4. proxy address(used in "rump" mode only). for "proxy" type.
 # 源redis地址。对于sentinel模式，输入格式为"master名字:拉取角色为master或者slave@sentinel的地址"
 source.address = 127.0.0.1:20441
-# password.
+# password of db/proxy. even if type is sentinel.
 source.password_raw = 123456
 # auth type, don't modify it
 source.auth_type = auth
@@ -59,11 +59,11 @@ target.type = standalone
 # ip:port
 # the target address can be the following:
 #   1. single db address. for "standalone" type.
-#   2. sentinel_master_name@sentinel single/cluster address, e.g., mymaster@127.0.0.1:26379;127.0.0.1:26380. for "sentinel" type.
+#   2. ${sentinel_master_name}:${master or slave}@sentinel single/cluster address, e.g., mymaster:master@127.0.0.1:26379;127.0.0.1:26380, or @127.0.0.1:26379;127.0.0.1:26380. for "sentinel" type.
 #   3. cluster that has several db nodes split by semicolon(;). for "cluster" type.
 #   4. proxy address(used in "rump" mode only). for "proxy" type.
 target.address = 127.0.0.1:20551
-# password.
+# password of db/proxy. even if type is sentinel.
 target.password_raw =
 # auth type, don't modify it
 target.auth_type = auth

src/redis-shake/common/configure.go

@@ -57,8 +57,9 @@ func parseAddress(tp, address, redisType string, isSource bool) error {
 	case conf.RedisTypeSentinel:
 		arr := strings.Split(address, AddressSplitter)
 		if len(arr) != 2 {
-			return fmt.Errorf("redis type[%v] address[%v] length[%v] != 2",
-				conf.RedisTypeStandalone, address, len(arr))
+			return fmt.Errorf("redis type[%v] address[%v] must begin with or has '%v': e.g., \"master@ip1:port1;ip2:port2\", " +
+				"\"@ip1:port1,ip2:port2\"",
+				conf.RedisTypeSentinel, address, AddressSplitter)
 		}
 
 		var masterName string