[root@ecs-65685 bin]# /opt/elastic/elasticsearch-7.8.1/bin/elasticsearch
future versions of Elasticsearch will require Java 11; your Java version from [/opt/jdk1.8.0_333/jre] does not meet this requirement
future versions of Elasticsearch will require Java 11; your Java version from [/opt/jdk1.8.0_333/jre] does not meet this requirement
[2022-10-11T17:40:42,664][ERROR][o.e.b.ElasticsearchUncaughtExceptionHandler] [ecs-65685] uncaught exception in thread [main]
org.elasticsearch.bootstrap.StartupException: java.lang.RuntimeException: can not run elasticsearch as root
	at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:174) ~[elasticsearch-7.8.1.jar:7.8.1]
	at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:161) ~[elasticsearch-7.8.1.jar:7.8.1]
	at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:86) ~[elasticsearch-7.8.1.jar:7.8.1]
	at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:127) ~[elasticsearch-cli-7.8.1.jar:7.8.1]
	at org.elasticsearch.cli.Command.main(Command.java:90) ~[elasticsearch-cli-7.8.1.jar:7.8.1]
	at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:126) ~[elasticsearch-7.8.1.jar:7.8.1]
	at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:92) ~[elasticsearch-7.8.1.jar:7.8.1]
Caused by: java.lang.RuntimeException: can not run elasticsearch as root
	at org.elasticsearch.bootstrap.Bootstrap.initializeNatives(Bootstrap.java:111) ~[elasticsearch-7.8.1.jar:7.8.1]
	at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:178) ~[elasticsearch-7.8.1.jar:7.8.1]
	at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:393) ~[elasticsearch-7.8.1.jar:7.8.1]
	at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:170) ~[elasticsearch-7.8.1.jar:7.8.1]
	... 6 more
uncaught exception in thread [main]
java.lang.RuntimeException: can not run elasticsearch as root
	at org.elasticsearch.bootstrap.Bootstrap.initializeNatives(Bootstrap.java:111)
	at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:178)
	at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:393)
	at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:170)
	at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:161)
	at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:86)
	at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:127)
	at org.elasticsearch.cli.Command.main(Command.java:90)
	at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:126)
	at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:92)
For complete error details, refer to the log at /opt/elastic/es/logs/elasticsearch.log
[root@ecs-65685 bin]# 2022-10-11 09:40:42,993994 UTC [6056] ERROR CLogger.cc@311 Cannot log to named pipe /tmp/elasticsearch-1369077120224648390/controller_log_5893 as it could not be opened for writing
2022-10-11 09:40:42,994085 UTC [6056] INFO  Main.cc@104 Parent process died - ML controller exiting

 # 如果是要用root用户启动 就在后面加 --allow-root ，要么就切换用户执行
[root@ecs-65685 bin]# /opt/elastic/kibana-7.8.1-linux-x86_64/bin/kibana
Kibana should not be run as root.  Use --allow-root to continue.

[root@ecs-65685 bin]# /opt/elastic/kibana-7.8.1-linux-x86_64/bin/kibana --allow-root
  log   [17:31:37.776] [warning][plugins-discovery] Expect plugin "id" in camelCase, but found: apm_oss
  log   [17:31:37.787] [warning][plugins-discovery] Expect plugin "id" in camelCase, but found: triggers_actions_ui
  log   [17:32:03.147] [info][plugins-service] Plugin "visTypeXy" is disabled.
  log   [17:32:03.148] [info][plugins-service] Plugin "endpoint" is disabled.
  log   [17:32:03.148] [info][plugins-service] Plugin "ingestManager" is disabled.
  log   [17:32:03.149] [info][plugins-service] Plugin "lists" is disabled.
  log   [17:32:05.837] [warning][config][deprecation] Config key [monitoring.cluster_alerts.email_notifications.email_address] will be required for email notifications to work in 8.0."
  log   [17:32:05.904] [info][plugins-system] Setting up [94] plugins: [taskManager,licensing,observability,eventLog,encryptedSavedObjects,code,usageCollection,ossTelemetry,telemetryCollectionManager,telemetry,telemetryCollectionXpack,kibanaLegacy,devTools,translations,uiActions,statusPage,share,newsfeed,mapsLegacy,mapsLegacyLicensing,kibanaUtils,kibanaReact,inspector,embeddable,advancedUiActions,embeddableEnhanced,drilldowns,indexPatternManagement,esUiShared,discover,charts,bfetch,expressions,data,home,cloud,console,consoleExtensions,apm_oss,searchprofiler,painlessLab,grokdebugger,management,upgradeAssistant,reporting,licenseManagement,indexManagement,remoteClusters,crossClusterReplication,indexLifecycleManagement,watcher,advancedSettings,telemetryManagementSection,fileUpload,dataEnhanced,visualizations,visTypeVislib,visTypeVega,visTypeTimeseries,rollup,visTypeTimelion,features,security,snapshotRestore,transform,ingestPipelines,canvas,visTypeTagcloud,visTypeTable,visTypeMetric,visTypeMarkdown,inputControlVis,savedObjects,navigation,lens,graph,maps,visualize,dashboard,dashboardEnhanced,savedObjectsManagement,spaces,actions,case,alerting,alertingBuiltins,triggers_actions_ui,infra,monitoring,logstash,uptime,ml,siem,apm]
  log   [17:32:05.914] [warning][config][encryptedSavedObjects][plugins] Generating a random key for xpack.encryptedSavedObjects.encryptionKey. To be able to decrypt encrypted saved objects attributes after restart, please set xpack.encryptedSavedObjects.encryptionKey in kibana.yml
  log   [17:32:06.058] [warning][config][plugins][security] Generating a random key for xpack.security.encryptionKey. To prevent sessions from being invalidated on restart, please set xpack.security.encryptionKey in kibana.yml
  log   [17:32:06.059] [warning][config][plugins][security] Session cookies will be transmitted over insecure connections. This is not recommended.
  log   [17:32:06.109] [warning][actions][actions][plugins] APIs are disabled due to the Encrypted Saved Objects plugin using an ephemeral encryption key. Please set xpack.encryptedSavedObjects.encryptionKey in kibana.yml.
  log   [17:32:06.122] [warning][alerting][alerting][plugins][plugins] APIs are disabled due to the Encrypted Saved Objects plugin using an ephemeral encryption key. Please set xpack.encryptedSavedObjects.encryptionKey in kibana.yml.
  log   [17:32:06.149] [info][monitoring][monitoring][plugins] config sourced from: production cluster
  log   [17:32:06.150] [warning][monitoring][monitoring][plugins] X-Pack Monitoring Cluster Alerts will not be available: undefined
  log   [17:32:06.188] [info][crossClusterReplication][plugins] Your basic license does not support crossClusterReplication. Please upgrade your license.
  log   [17:32:06.189] [info][plugins][watcher] Your basic license does not support watcher. Please upgrade your license.
  log   [17:32:06.196] [info][kibana-monitoring][monitoring][monitoring][plugins] Starting monitoring stats collection
  log   [17:32:06.393] [info][savedobjects-service] Waiting until all Elasticsearch nodes are compatible with Kibana before starting saved objects migrations...
  log   [17:32:06.412] [info][savedobjects-service] Starting saved objects migrations
  log   [17:32:06.447] [info][savedobjects-service] Creating index .kibana_task_manager_1.
  log   [17:32:06.450] [info][savedobjects-service] Creating index .kibana_1.
  log   [17:32:06.899] [info][savedobjects-service] Pointing alias .kibana_task_manager to .kibana_task_manager_1.
  log   [17:32:06.947] [info][savedobjects-service] Pointing alias .kibana to .kibana_1.
  log   [17:32:06.999] [info][savedobjects-service] Finished in 552ms.
  log   [17:32:07.022] [info][savedobjects-service] Finished in 577ms.
  log   [17:32:07.025] [info][plugins-system] Starting [72] plugins: [taskManager,licensing,observability,eventLog,encryptedSavedObjects,code,usageCollection,ossTelemetry,telemetryCollectionManager,telemetry,telemetryCollectionXpack,kibanaLegacy,translations,share,discover,bfetch,expressions,data,home,cloud,console,consoleExtensions,apm_oss,searchprofiler,painlessLab,grokdebugger,management,upgradeAssistant,reporting,licenseManagement,indexManagement,remoteClusters,crossClusterReplication,indexLifecycleManagement,watcher,advancedSettings,fileUpload,dataEnhanced,visualizations,visTypeVislib,visTypeVega,visTypeTimeseries,rollup,visTypeTimelion,features,security,snapshotRestore,transform,ingestPipelines,canvas,visTypeTagcloud,visTypeTable,visTypeMetric,visTypeMarkdown,inputControlVis,lens,graph,visualize,dashboard,savedObjectsManagement,spaces,actions,case,alerting,alertingBuiltins,infra,monitoring,logstash,uptime,ml,siem,apm]
  log   [17:32:09.117] [info][status][plugin:kibana@7.8.1] Status changed from uninitialized to green - Ready
  log   [17:32:09.121] [info][status][plugin:elasticsearch@7.8.1] Status changed from uninitialized to yellow - Waiting for Elasticsearch
  log   [17:32:09.121] [info][status][plugin:elasticsearch@7.8.1] Status changed from yellow to green - Ready
  log   [17:32:09.123] [info][status][plugin:xpack_main@7.8.1] Status changed from uninitialized to green - Ready
  log   [17:32:09.133] [info][status][plugin:monitoring@7.8.1] Status changed from uninitialized to green - Ready
  log   [17:32:09.136] [warning][plugins][reporting] Generating a random key for xpack.reporting.encryptionKey. To prevent sessions from being invalidated on restart, please set xpack.reporting.encryptionKey in kibana.yml
  log   [17:32:09.138] [warning][plugins][reporting] Chromium sandbox provides an additional layer of protection, but is not supported for Linux Centos 7.9.2009 OS. Automatically setting 'xpack.reporting.capture.browser.chromium.disableSandbox: true'.
  log   [17:32:09.139] [warning][reporting] Enabling the Chromium sandbox provides an additional layer of protection.
  log   [17:32:10.356] [info][status][plugin:reporting@7.8.1] Status changed from uninitialized to green - Ready
  log   [17:32:10.383] [info][status][plugin:spaces@7.8.1] Status changed from uninitialized to green - Ready
  log   [17:32:10.385] [info][status][plugin:security@7.8.1] Status changed from uninitialized to green - Ready
  log   [17:32:10.391] [info][status][plugin:dashboard_mode@7.8.1] Status changed from uninitialized to green - Ready
  log   [17:32:10.393] [info][status][plugin:beats_management@7.8.1] Status changed from uninitialized to green - Ready
  log   [17:32:10.438] [info][status][plugin:maps@7.8.1] Status changed from uninitialized to green - Ready
  log   [17:32:10.446] [info][plugins][taskManager][taskManager] TaskManager is identified by the Kibana UUID: 66a6ab9a-0339-47c1-9fa8-ef059a59152e
  log   [17:32:10.449] [info][status][plugin:task_manager@7.8.1] Status changed from uninitialized to green - Ready
  log   [17:32:10.451] [info][status][plugin:encryptedSavedObjects@7.8.1] Status changed from uninitialized to green - Ready
  log   [17:32:10.454] [info][status][plugin:apm_oss@7.8.1] Status changed from uninitialized to green - Ready
  log   [17:32:10.456] [info][status][plugin:console_legacy@7.8.1] Status changed from uninitialized to green - Ready
  log   [17:32:10.459] [info][status][plugin:region_map@7.8.1] Status changed from uninitialized to green - Ready
  log   [17:32:10.464] [info][status][plugin:ui_metric@7.8.1] Status changed from uninitialized to green - Ready
  log   [17:32:10.470] [info][listening] Server running at http://192.168.0...:5601
  log   [17:32:10.901] [info][server][Kibana][http] http server running at http://192.168.0...:5601