我已经在Centos 7的4个节点中部署了ElasticSearch集群，但是sataus os集群是红色的，我附加了ERROR波纹管：
Error: [search_phase_execution_exception] all shards failed
at respond (http://172.18.13.66:5601/bundles/vendors.bundle.js?v=16602:111:161556)
at checkRespForFailure (http://172.18.13.66:5601/bundles/vendors.bundle.js?v=16602:111:160796)
at http://172.18.13.66:5601/bundles/vendors.bundle.js?v=16602:105:285566
at processQueue (http://172.18.13.66:5601/bundles/vendors.bundle.js?v=16602:58:132456)
at http://172.18.13.66:5601/bundles/vendors.bundle.js?v=16602:58:133349
at Scope.$digest (http://172.18.13.66:5601/bundles/vendors.bundle.js?v=16602:58:144239)
at Scope.$apply (http://172.18.13.66:5601/bundles/vendors.bundle.js?v=16602:58:147018)
at done (http://172.18.13.66:5601/bundles/vendors.bundle.js?v=16602:58:100026)
at completeRequest (http://172.18.13.66:5601/bundles/vendors.bundle.js?v=16602:58:104697)
at XMLHttpRequest.xhr.onload (http://172.18.13.66:5601/bundles/vendors.bundle.js?v=16602:58:105435
在其他帖子中已经读到我，该错误表示我没有足够的可用磁盘或足够的RAM。最少的资源可以解决这个问题？