1、启动kibana报错，如下所示：
1 [elsearch@master kibana-7.2.1-linux-x86_64]$ ./bin/kibana 2 log [03:09:30.348] [info][status][plugin:kibana@7.2.1] Status changed from uninitialized to green - Ready 3 log [03:09:30.362] [info][status][plugin:elasticsearch@7.2.1] Status changed from uninitialized to yellow - Waiting for Elasticsearch 4 log [03:09:30.368] [info][status][plugin:xpack_main@7.2.1] Status changed from uninitialized to yellow - Waiting for Elasticsearch 5 log [03:09:30.406] [info][status][plugin:graph@7.2.1] Status changed from uninitialized to yellow - Waiting for Elasticsearch 6 log [03:09:30.436] [info][status][plugin:monitoring@7.2.1] Status changed from uninitialized to green - Ready 7 log [03:09:30.440] [info][status][plugin:spaces@7.2.1] Status changed from uninitialized to yellow - Waiting for Elasticsearch 8 log [03:09:30.451] [warning][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 9 log [03:09:30.457] [warning][security] Session cookies will be transmitted over insecure connections. This is not recommended. 10 log [03:09:30.492] [info][status][plugin:security@7.2.1] Status changed from uninitialized to green - Ready 11 log [03:09:30.499] [info][status][plugin:searchprofiler@7.2.1] Status changed from uninitialized to yellow - Waiting for Elasticsearch 12 log [03:09:30.503] [info][status][plugin:ml@7.2.1] Status changed from uninitialized to yellow - Waiting for Elasticsearch 13 log [03:09:30.586] [info][status][plugin:tilemap@7.2.1] Status changed from uninitialized to yellow - Waiting for Elasticsearch 14 log [03:09:30.588] [info][status][plugin:watcher@7.2.1] Status changed from uninitialized to yellow - Waiting for Elasticsearch 15 log [03:09:30.607] [info][status][plugin:grokdebugger@7.2.1] Status changed from uninitialized to yellow - Waiting for Elasticsearch 16 log [03:09:30.619] [info][status][plugin:dashboard_mode@7.2.1] Status changed from uninitialized to green - Ready 17 log [03:09:30.621] [info][status][plugin:logstash@7.2.1] Status changed from uninitialized to yellow - Waiting for Elasticsearch 18 log [03:09:30.632] [info][status][plugin:beats_management@7.2.1] Status changed from uninitialized to yellow - Waiting for Elasticsearch 19 log [03:09:30.657] [info][status][plugin:apm_oss@7.2.1] Status changed from uninitialized to green - Ready 20 log [03:09:30.675] [info][status][plugin:apm@7.2.1] Status changed from uninitialized to green - Ready 21 log [03:09:30.678] [info][status][plugin:code@7.2.1] Status changed from uninitialized to green - Ready 22 log [03:09:30.681] [info][status][plugin:tile_map@7.2.1] Status changed from uninitialized to green - Ready 23 log [03:09:30.684] [info][status][plugin:task_manager@7.2.1] Status changed from uninitialized to green - Ready 24 log [03:09:30.695] [info][status][plugin:maps@7.2.1] Status changed from uninitialized to yellow - Waiting for Elasticsearch 25 log [03:09:30.719] [info][status][plugin:interpreter@7.2.1] Status changed from uninitialized to green - Ready 26 log [03:09:30.757] [info][status][plugin:canvas@7.2.1] Status changed from uninitialized to green - Ready 27 log [03:09:30.766] [info][status][plugin:license_management@7.2.1] Status changed from uninitialized to green - Ready 28 log [03:09:30.768] [info][status][plugin:cloud@7.2.1] Status changed from uninitialized to green - Ready 29 log [03:09:30.772] [info][status][plugin:index_management@7.2.1] Status changed from uninitialized to yellow - Waiting for Elasticsearch 30 log [03:09:30.797] [info][status][plugin:console@7.2.1] Status changed from uninitialized to green - Ready 31 log [03:09:30.806] [info][status][plugin:console_extensions@7.2.1] Status changed from uninitialized to green - Ready 32 log [03:09:30.813] [info][status][plugin:notifications@7.2.1] Status changed from uninitialized to green - Ready 33 log [03:09:30.815] [info][status][plugin:index_lifecycle_management@7.2.1] Status changed from uninitialized to yellow - Waiting for Elasticsearch 34 log [03:09:30.837] [info][status][plugin:metrics@7.2.1] Status changed from uninitialized to green - Ready 35 log [03:09:30.879] [info][status][plugin:infra@7.2.1] Status changed from uninitialized to green - Ready 36 log [03:09:30.881] [info][status][plugin:rollup@7.2.1] Status changed from uninitialized to yellow - Waiting for Elasticsearch 37 log [03:09:30.897] [info][siem] Plugin initializing 38 log [03:09:30.940] [info][siem] Plugin done initializing 39 log [03:09:30.941] [info][status][plugin:siem@7.2.1] Status changed from uninitialized to green - Ready 40 log [03:09:30.945] [info][status][plugin:remote_clusters@7.2.1] Status changed from uninitialized to yellow - Waiting for Elasticsearch 41 log [03:09:30.957] [info][status][plugin:cross_cluster_replication@7.2.1] Status changed from uninitialized to yellow - Waiting for Elasticsearch 42 log [03:09:30.972] [info][status][plugin:translations@7.2.1] Status changed from uninitialized to green - Ready 43 log [03:09:30.988] [info][status][plugin:upgrade_assistant@7.2.1] Status changed from uninitialized to green - Ready 44 log [03:09:31.008] [info][status][plugin:uptime@7.2.1] Status changed from uninitialized to green - Ready 45 log [03:09:31.012] [info][status][plugin:oss_telemetry@7.2.1] Status changed from uninitialized to green - Ready 46 log [03:09:31.016] [warning][encrypted_saved_objects] Generating a random key for xpack.encrypted_saved_objects.encryptionKey. To be able to decrypt encrypted saved objects attributes after restart, please set xpack.encrypted_saved_objects.encryptionKey in kibana.yml 47 log [03:09:31.017] [info][status][plugin:encrypted_saved_objects@7.2.1] Status changed from uninitialized to green - Ready 48 log [03:09:31.035] [info][status][plugin:snapshot_restore@7.2.1] Status changed from uninitialized to yellow - Waiting for Elasticsearch 49 log [03:09:31.043] [info][status][plugin:data@7.2.1] Status changed from uninitialized to green - Ready 50 log [03:09:31.258] [info][status][plugin:timelion@7.2.1] Status changed from uninitialized to green - Ready 51 log [03:09:31.263] [info][status][plugin:ui_metric@7.2.1] Status changed from uninitialized to green - Ready 52 log [03:09:32.365] [info][status][plugin:elasticsearch@7.2.1] Status changed from yellow to green - Ready 53 log [03:09:32.909] [info][license][xpack] Imported license information from Elasticsearch for the [data] cluster: mode: basic | status: active 54 log [03:09:32.964] [info][status][plugin:xpack_main@7.2.1] Status changed from yellow to green - Ready 55 log [03:09:32.965] [info][status][plugin:graph@7.2.1] Status changed from yellow to green - Ready 56 log [03:09:32.970] [info][status][plugin:searchprofiler@7.2.1] Status changed from yellow to green - Ready 57 log [03:09:32.976] [info][status][plugin:ml@7.2.1] Status changed from yellow to green - Ready 58 log [03:09:32.979] [info][status][plugin:tilemap@7.2.1] Status changed from yellow to green - Ready 59 log [03:09:32.986] [info][status][plugin:watcher@7.2.1] Status changed from yellow to green - Ready 60 log [03:09:32.988] [info][status][plugin:grokdebugger@7.2.1] Status changed from yellow to green - Ready 61 log [03:09:32.989] [info][status][plugin:logstash@7.2.1] Status changed from yellow to green - Ready 62 log [03:09:32.991] [info][status][plugin:beats_management@7.2.1] Status changed from yellow to green - Ready 63 log [03:09:32.992] [info][status][plugin:index_management@7.2.1] Status changed from yellow to green - Ready 64 log [03:09:32.993] [info][status][plugin:index_lifecycle_management@7.2.1] Status changed from yellow to green - Ready 65 log [03:09:32.994] [info][status][plugin:rollup@7.2.1] Status changed from yellow to green - Ready 66 log [03:09:32.996] [info][status][plugin:remote_clusters@7.2.1] Status changed from yellow to green - Ready 67 log [03:09:32.997] [info][status][plugin:cross_cluster_replication@7.2.1] Status changed from yellow to green - Ready 68 log [03:09:32.998] [info][status][plugin:snapshot_restore@7.2.1] Status changed from yellow to green - Ready 69 log [03:09:33.000] [info][kibana-monitoring][monitoring] Starting monitoring stats collection 70 log [03:09:33.029] [info][status][plugin:maps@7.2.1] Status changed from yellow to green - Ready 71 log [03:09:36.580] [warning][browser-driver][reporting] Enabling the Chromium sandbox provides an additional layer of protection. 72 log [03:09:36.627] [warning][reporting] Generating a random key for xpack.reporting.encryptionKey. To prevent pending reports from failing on restart, please set xpack.reporting.encryptionKey in kibana.yml 73 log [03:09:36.696] [info][status][plugin:reporting@7.2.1] Status changed from uninitialized to green - Ready 74 error [03:10:02.387] [warning][process] UnhandledPromiseRejectionWarning: Error: Request Timeout after 30000ms 75 at /data/kibana-7.2.1-linux-x86_64/node_modules/elasticsearch/src/lib/transport.js:362:15 76 at Timeout.<anonymous> (/data/kibana-7.2.1-linux-x86_64/node_modules/elasticsearch/src/lib/transport.js:391:7) 77 at ontimeout (timers.js:436:11) 78 at tryOnTimeout (timers.js:300:5) 79 at listOnTimeout (timers.js:263:5) 80 at Timer.processTimers (timers.js:223:10) 81 at emitWarning (internal/process/promises.js:81:15) 82 at emitPromiseRejectionWarnings (internal/process/promises.js:120:9) 83 at process._tickCallback (internal/process/next_tick.js:69:34) 84 error [03:10:02.393] [warning][process] Error: Request Timeout after 30000ms 85 at /data/kibana-7.2.1-linux-x86_64/node_modules/elasticsearch/src/lib/transport.js:362:15 86 at Timeout.<anonymous> (/data/kibana-7.2.1-linux-x86_64/node_modules/elasticsearch/src/lib/transport.js:391:7) 87 at ontimeout (timers.js:436:11) 88 at tryOnTimeout (timers.js:300:5) 89 at listOnTimeout (timers.js:263:5) 90 at Timer.processTimers (timers.js:223:10) 91 log [03:10:06.696] [warning][reporting] Reporting plugin self-check failed. Please check the Kibana Reporting settings. Error: Request Timeout after 30000ms 92 log [03:10:06.784] [warning][task_manager] PollError Request Timeout after 30000ms 93 log [03:10:06.787] [warning][maps] Error scheduling telemetry task, received NotInitialized: Tasks cannot be scheduled until after task manager is initialized! 94 log [03:10:06.790] [warning][telemetry] Error scheduling task, received NotInitialized: Tasks cannot be scheduled until after task manager is initialized! 95 log [03:10:36.807] [error][status][plugin:spaces@7.2.1] Status changed from yellow to red - Request Timeout after 30000ms 96 log [03:10:36.813] [fatal][root] { Error: Request Timeout after 30000ms 97 at /data/kibana-7.2.1-linux-x86_64/node_modules/elasticsearch/src/lib/transport.js:362:15 98 at Timeout.<anonymous> (/data/kibana-7.2.1-linux-x86_64/node_modules/elasticsearch/src/lib/transport.js:391:7) 99 at ontimeout (timers.js:436:11) 100 at tryOnTimeout (timers.js:300:5) 101 at listOnTimeout (timers.js:263:5) 102 at Timer.processTimers (timers.js:223:10) 103 status: undefined, 104 displayName: 'RequestTimeout', 105 message: 'Request Timeout after 30000ms', 106 body: undefined, 107 isBoom: true, 108 isServer: true, 109 data: null, 110 output: 111 { statusCode: 503, 112 payload: 113 { statusCode: 503, 114 error: 'Service Unavailable', 115 message: 'Request Timeout after 30000ms' }, 116 headers: {} }, 117 reformat: [Function], 118 [Symbol(SavedObjectsClientErrorCode)]: 'SavedObjectsClient/esUnavailable' } 119 120 FATAL Error: Request Timeout after 30000ms
2、解决方法。
2.1、第一种解决方法，可以将kibana请求es的请求时长调大，如下所示：
1 elasticsearch.requestTimeout: 50000
2.2、调整/data/elasticsearch-7.2.1/config/jvm.options的jvm参数。将内存调大，如下所示：
默认是1gb的，如果想要把自己虚拟机的改成2gb的话，至少需要给虚拟机3gb，我这个给的是4gb内存，然后如果给2gb内存，这两个参数调整为2gb的话，启动直接报内存不足的错误。
1 ################################################################ 2 3 # Xms represents the initial size of total heap space 4 # Xmx represents the maximum size of total heap space 5 6 -Xms2g 7 -Xmx2g 8 9 ################################################################