mac下ssh 报错：localhost: ssh: connect to host localhost port 22: Connection refused

1.美图

2.背景

mac下本地启动hadoop 本地模式

(base) lcc@lcc hadoop-2.7.4$ sh sbin/start-all.sh
This script is Deprecated. Instead use start-dfs.sh and start-yarn.sh
19/12/02 10:05:33 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Starting namenodes on [localhost]
localhost: ssh: connect to host localhost port 22: Connection refused
启动nameNode的命令  /Users/lcc/soft/hadoop/hadoop-