Hadoop集群搭建(HA)在master下格式化ZK，hdfs zkfc -format报错

21/05/15 23:44:51 FATAL tools.DFSZKFailoverController: Got a fatal error, exiting now
java.net.UnknownHostException: slave: 未知的名称或服务
    at java.net.Inet4AddressImpl.lookupAllHostAddr(Native Method)
    at java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:928)
    at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1323)
    at java.net.InetAddress.getAllByName0(InetAddress.java:1276)
    at java.net.InetAddress.getAllByName(InetAddress.java:1192)
    at java.net.InetAddress.getAllByName(InetAddress.java:1126)
    at org.apache.zookeeper.client.StaticHostProvider.<init>(StaticHostProvider.java:61)
    at org.apache.zookeeper.ZooKeeper.<init>(ZooKeeper.java:445)
    at org.apache.zookeeper.ZooKeeper.<init>(ZooKeeper.java:380)
    at org.apache.hadoop.ha.ActiveStandbyElector.getNewZooKeeper(ActiveStandbyElector.java:631)
    at org.apache.hadoop.ha.ActiveStandbyElector.createConnection(ActiveStandbyElector.java:775)
    at org.apache.hadoop.ha.ActiveStandbyElector.<init>(ActiveStandbyElector.java:229)
    at org.apache.hadoop.ha.ZKFailoverController.initZK(ZKFailoverController.java:350)
    at org.apache.hadoop.ha.ZKFailoverController.doRun(ZKFailoverController.java:191)
    at org.apache.hadoop.ha.ZKFailoverController.access$000(ZKFailoverController.java:61)
    at org.apache.hadoop.ha.ZKFailoverController$1.run(ZKFailoverController.java:172)
    at org.apache.hadoop.ha.ZKFailoverController$1.run(ZKFailoverController.java:168)
    at org.apache.hadoop.security.SecurityUtil.doAsLoginUserOrFatal(SecurityUtil.java:415)
    at org.apache.hadoop.ha.ZKFailoverController.run(ZKFailoverController.java:168)
    at org.apache.hadoop.hdfs.tools.DFSZKFailoverController.main(DFSZKFailoverController.java:181)