Elasticsearch with xpack.security.enabled throws Cluster is not yet ready

Elastic Stack Elasticsearch
3

Thanks for checking @Preakness

I use 3 similar nodes and deployment is performed via helm chart.

1:

> {"type": "server", "timestamp": "2019-09-05T14:04:06,310+0000", "level": "INFO", "component": "o.e.x.s.s.SecurityStatusChangeListener", "cluster.name": "elasticsearch", "node.name": "elasticsearch-master-2", "cluster.uuid": "XXXXXMM6QNWeFmFCKtXXXX", "node.id": "_mMfhYNSRLGy6l0yTa-oag",  "message": "Active license is now [BASIC]; Security is enabled"  }
> {"type": "server", "timestamp": "2019-09-05T14:06:01,773+0000", "level": "INFO", "component": "o.e.c.s.MasterService", "cluster.name": "elasticsearch", "node.name": "elasticsearch-master-2", "cluster.uuid": "XXXXXMM6QNWeFmFCKtXXXX", "node.id": "_mMfhYNSRLGy6l0yTa-oag",  "message": "node-join[{elasticsearch-master-0}{PBA3XLDqTiekoJy7yX_PLA}{0xSDDM8gRFu02iaKJ9WMFA}{172.30.xxx.xxx}{172.30.xxx.xxx:9300}{dim}{ml.machine_memory=2147483648, ml.max_open_jobs=20, xpack.installed=true} join existing leader], term: 2, version: 16, reason: added {{elasticsearch-master-0}{PBA3XLDqTiekoJy7yX_PLA}{0xSDDM8gRFu02iaKJ9WMFA}{172.30.xxx.xxx}{172.30.xxx.xxx:9300}{dim}{ml.machine_memory=2147483648, ml.max_open_jobs=20, xpack.installed=true},}"  }
> {"type": "server", "timestamp": "2019-09-05T14:06:03,506+0000", "level": "INFO", "component": "o.e.c.s.ClusterApplierService", "cluster.name": "elasticsearch", "node.name": "elasticsearch-master-2", "cluster.uuid": "XXXXXMM6QNWeFmFCKtXXXX", "node.id": "_mMfhYNSRLGy6l0yTa-oag",  "message": "added {{elasticsearch-master-0}{PBA3XLDqTiekoJy7yX_PLA}{0xSDDM8gRFu02iaKJ9WMFA}{172.30.xxx.xxx}{172.30.xxx.xxx:9300}{dim}{ml.machine_memory=2147483648, ml.max_open_jobs=20, xpack.installed=true},}, term: 2, version: 16, reason: Publication{term=2, version=16}"  }

2:

{"type": "server", "timestamp": "2019-09-05T14:04:06,240+0000", "level": "INFO", "component": "o.e.x.s.s.SecurityStatusChangeListener", "cluster.name": "elasticsearch", "node.name": "elasticsearch-master-1", "cluster.uuid": "XXXXXMM6QNWeFmFCKtXXXX", "node.id": "6QIoGNbHS5Sg1OtcjvhGtw",  "message": "Active license is now [BASIC]; Security is enabled"  }
{"type": "server", "timestamp": "2019-09-05T14:04:06,246+0000", "level": "INFO", "component": "o.e.x.m.e.l.LocalExporter", "cluster.name": "elasticsearch", "node.name": "elasticsearch-master-1", "cluster.uuid": "XXXXXMM6QNWeFmFCKtXXXX", "node.id": "6QIoGNbHS5Sg1OtcjvhGtw",  "message": "waiting for elected master node [{elasticsearch-master-2}{_mMfhYNSRLGy6l0yTa-oag}{-vYg1HDgT1e63jbp_POWLQ}{172.30.xxx.xxx}{172.30.xxx.xxx:9300}{dim}{ml.machine_memory=2147483648, ml.max_open_jobs=20, xpack.installed=true}] to setup local exporter [default_local] (does it have x-pack installed?)"  }
{"type": "server", "timestamp": "2019-09-05T14:04:07,075+0000", "level": "INFO", "component": "o.e.x.m.e.l.LocalExporter", "cluster.name": "elasticsearch", "node.name": "elasticsearch-master-1", "cluster.uuid": "XXXXXMM6QNWeFmFCKtXXXX", "node.id": "6QIoGNbHS5Sg1OtcjvhGtw",  "message": "waiting for elected master node [{elasticsearch-master-2}{_mMfhYNSRLGy6l0yTa-oag}{-vYg1HDgT1e63jbp_POWLQ}{172.30.xxx.xxx}{172.30.xxx.xxx:9300}{dim}{ml.machine_memory=2147483648, ml.max_open_jobs=20, xpack.installed=true}] to setup local exporter [default_local] (does it have x-pack installed?)"  }
{"type": "server", "timestamp": "2019-09-05T14:06:01,805+0000", "level": "INFO", "component": "o.e.c.s.ClusterApplierService", "cluster.name": "elasticsearch", "node.name": "elasticsearch-master-1", "cluster.uuid": "XXXXXMM6QNWeFmFCKtXXXX", "node.id": "6QIoGNbHS5Sg1OtcjvhGtw",  "message": "added {{elasticsearch-master-0}{PBA3XLDqTiekoJy7yX_PLA}{0xSDDM8gRFu02iaKJ9WMFA}{172.30.xxx.yyy}{172.30.xxx.yyy:9300}{dim}{ml.machine_memory=2147483648, ml.max_open_jobs=20, xpack.installed=true},}, term: 2, version: 16, reason: ApplyCommitRequest{term=2, version=16, sourceNode={elasticsearch-master-2}{_mMfhYNSRLGy6l0yTa-oag}{-vYg1HDgT1e63jbp_POWLQ}{172.30.xxx.xxx}{172.30.xxx.xxx:9300}{dim}{ml.machine_memory=2147483648, ml.max_open_jobs=20, xpack.installed=true}}"  }

3:

{"type": "server", "timestamp": "2019-09-05T14:04:06,310+0000", "level": "INFO", "component": "o.e.x.s.s.SecurityStatusChangeListener", "cluster.name": "elasticsearch", "node.name": "elasticsearch-master-2", "cluster.uuid": "XXXXXMM6QNWeFmFCKtZXXX", "node.id": "_mMfhYNSRLGy6l0yTa-oag",  "message": "Active license is now [BASIC]; Security is enabled"  }
{"type": "server", "timestamp": "2019-09-05T14:06:01,773+0000", "level": "INFO", "component": "o.e.c.s.MasterService", "cluster.name": "elasticsearch", "node.name": "elasticsearch-master-2", "cluster.uuid": "XXXXXMM6QNWeFmFCKtZXXX", "node.id": "_mMfhYNSRLGy6l0yTa-oag",  "message": "node-join[{elasticsearch-master-0}{PBA3XLDqTiekoJy7yX_PLA}{0xSDDM8gRFu02iaKJ9WMFA}{172.30.xxx.xxx}{172.30.xxx.xxx:9300}{dim}{ml.machine_memory=2147483648, ml.max_open_jobs=20, xpack.installed=true} join existing leader], term: 2, version: 16, reason: added {{elasticsearch-master-0}{PBA3XLDqTiekoJy7yX_PLA}{0xSDDM8gRFu02iaKJ9WMFA}{172.30.xxx.xxx}{172.30.xxx.xxx:9300}{dim}{ml.machine_memory=2147483648, ml.max_open_jobs=20, xpack.installed=true},}"  }
{"type": "server", "timestamp": "2019-09-05T14:06:03,506+0000", "level": "INFO", "component": "o.e.c.s.ClusterApplierService", "cluster.name": "elasticsearch", "node.name": "elasticsearch-master-2", "cluster.uuid": "XXXXXMM6QNWeFmFCKtZXXX", "node.id": "_mMfhYNSRLGy6l0yTa-oag",  "message": "added {{elasticsearch-master-0}{PBA3XLDqTiekoJy7yX_PLA}{0xSDDM8gRFu02iaKJ9WMFA}{172.30.xxx.xxx}{172.30.xxx.xxx:9300}{dim}{ml.machine_memory=2147483648, ml.max_open_jobs=20, xpack.installed=true},}, term: 2, version: 16, reason: Publication{term=2, version=16}"  }

Another thing, when I add xpack.security.transport.ssl xpack modules, I receive the error below:
xpack.security.enabled: true
xpack.security.transport.ssl.enabled: true
xpack.security.transport.ssl.verification_mode: certificate
xpack.security.transport.ssl.keystore.path: elastic-certificates.p12
xpack.security.transport.ssl.truststore.path: elastic-certificates.p12

org.elasticsearch.bootstrap.StartupException: java.lang.IllegalStateException: failed to load plugin class [org.elasticsearch.xpack.core.XPackPlugin]