elasticsearch7.14安装设置密码时报错Setup-passwords: Failed to determine the health of the cluster

elasticsearch7.14安装设置密码时报错Setup-passwords: Failed to determine the health of the cluster

/usr/share/elasticsearch/bin# sudo ./elasticsearch-setup-passwords interactive

Failed to determine the health of the cluster running at http://172.31.47.37:9200
Unexpected response code [503] from calling GET http://172.31.47.37:9200/_cluster/health?pretty
Cause: master_not_discovered_exception

It is recommended that you resolve the issues with your cluster before running elasticsearch-setup-passwords.
It is very likely that the password changes will fail when run against an unhealthy cluster.

Do you want to continue with the password setup process [y/N]y

Initiating the setup of passwords for reserved users elastic,apm_system,kibana,logstash_system,beats_system,remote_monitoring_user.
You will be prompted to enter passwords as the process progresses.
Please confirm that you would like to continue [y/N]y


Enter password for [elastic]:
Reenter password for [elastic]:
Enter password for [apm_system]:
Reenter password for [apm_system]:
Enter password for [kibana]:
Reenter password for [kibana]:
Enter password for [logstash_system]:
Reenter password for [logstash_system]:
Enter password for [beats_system]:
Reenter password for [beats_system]:
Enter password for [remote_monitoring_user]:
Reenter password for [remote_monitoring_user]:

Unexpected response code [503] from calling PUT http://172.31.47.37:9200/_security/user/apm_system/_password?pretty
Cause: Cluster state has not been recovered yet, cannot write to the [null] index

Possible next steps:
* Try running this tool again.
* Try running with the --verbose parameter for additional messages.
* Check the elasticsearch logs for additional error details.
* Use the change password API manually.

ERROR: Failed to set password for user [apm_system].

在elasticsearch.yml 配置文件中去除

discovery.seed_hosts 和cluster.initial_master_nodes. 
然后添加discovery.type: single-node

重启服务，并重新设置密码发现成功了