{"id":40611,"date":"2022-11-15T13:53:33","date_gmt":"2022-11-27T04:54:47","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e9%98%85%e8%af%bbelasticsearch%e6%ba%90%e4%bb%a3%e7%a0%81-%e5%90%af%e5%8a%a8elasticsearch\/"},"modified":"2024-04-29T00:46:53","modified_gmt":"2024-04-28T16:46:53","slug":"%e9%98%85%e8%af%bbelasticsearch%e6%ba%90%e4%bb%a3%e7%a0%81-%e5%90%af%e5%8a%a8elasticsearch","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e9%98%85%e8%af%bbelasticsearch%e6%ba%90%e4%bb%a3%e7%a0%81-%e5%90%af%e5%8a%a8elasticsearch\/","title":{"rendered":"\u9605\u8bfbElasticsearch\u6e90\u4ee3\u7801 &#8211; \u542f\u52a8Elasticsearch"},"content":{"rendered":"<p>\u672c\u6587\u662f\u300a2021\u5e74\u5723\u8bde\u65e5\u5386\u300b\u7b2c18\u7bc7\u6587\u7ae0\u3002<\/p>\n<h1>\u9996\u5148<\/h1>\n<p>\u6700\u8fd1\uff0c\u6211\u6709\u673a\u4f1a\u5f00\u53d1Elasticsearch\u7684\u81ea\u5b9a\u4e49\u63d2\u4ef6\uff0c\u5e76\u4e14\u610f\u8bc6\u5230\u6211\u5bf9Elasticsearch\u7684\u7406\u89e3\u8fd8\u4e0d\u591f\uff0c\u6240\u4ee5\u6211\u4ece\u8fd9\u4e2a\u5b63\u5ea6\u5f00\u59cb\u548c\u56e2\u961f\u6210\u5458\u4e00\u8d77\u4e3e\u529e\u5185\u90e8Elasticsearch\u6e90\u4ee3\u7801\u9605\u8bfb\u5b66\u4e60\u4f1a\u3002<\/p>\n<p>\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u603b\u7ed3\u4e86\u4ee5\u524d\u7684\u5b66\u4e60\u5c0f\u7ec4\u5185\u5bb9\u7684\u6982\u8981\uff0c\u5e76\u6574\u7406\u4e86Elasticsearch\u7684\u542f\u52a8\u8fc7\u7a0b\u3002<\/p>\n<p>\u8fd9\u6b21\u4f7f\u7528\u7684Elasticsearch\u7248\u672c\u662f7.14\uff0c\u5728\u542f\u52a8\u4e4b\u524d\u6709\u4e00\u4e9b\u51c6\u5907\u5de5\u4f5c\uff08\u4f8b\u5982\u73af\u5883\u53d8\u91cf\u8bbe\u7f6e\uff09\uff0c\u4f46\u5728\u8fd9\u91cc\u7565\u53bb\u4e86\u3002\u8bf7\u4e8b\u5148\u8c05\u89e3\u6211\u7684\u77e5\u8bc6\u4e0d\u8db3\u3002\u5982\u679c\u60a8\u80fd\u7ed9\u51fa\u5173\u4e8e\u6587\u7ae0\u5185\u5bb9\u7684\u5efa\u8bae\uff0c\u4f8b\u5982\u5bf9\u4e8e\u8fd9\u4e2a\u5730\u65b9\u5e94\u8be5\u8fd9\u6837\u7406\u89e3\uff0c\u6211\u5c06\u975e\u5e38\u9ad8\u5174\uff01<\/p>\n<h1>Elasticsearch\u542f\u52a8\u7684\u6982\u8ff0<\/h1>\n<p>Elasticsearch\u7684\u542f\u52a8\u8fc7\u7a0b\u5927\u81f4\u5305\u62ec\u4ee5\u4e0b\u6b65\u9aa4\u3002<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>org.elasticsearch.bootstrap.Elasticsearch\u7684main()\u65b9\u6cd5<\/ol>\n<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>org.elasticsearch.bootstrap.Bootstrap\u7c7b<\/ol>\n<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<ol>org.elasticsearch.node.Node\u7c7b<\/ol>\n<p>\u9996\u5148\uff0c\u6211\u4eec\u5c06\u89e3\u91caElasticsearch\u7684\u5165\u53e3\u70b9\u3002\u901a\u8fc7elasticsearch\u7684\u542f\u52a8\u811a\u672c(bin\/elasticsearch)\u6765\u786e\u8ba4\uff0c\u5165\u53e3\u70b9\u662forg.elasticsearch.bootstrap.Elasticsearch\u3002<\/p>\n<pre class=\"post-pre\"><code>  exec \\\r\n    \"$JAVA\" \\\r\n    \"$XSHARE\" \\\r\n    $ES_JAVA_OPTS \\\r\n    -Des.path.home=\"$ES_HOME\" \\\r\n    -Des.path.conf=\"$ES_PATH_CONF\" \\\r\n    -Des.distribution.flavor=\"$ES_DISTRIBUTION_FLAVOR\" \\\r\n    -Des.distribution.type=\"$ES_DISTRIBUTION_TYPE\" \\\r\n    -Des.bundled_jdk=\"$ES_BUNDLED_JDK\" \\\r\n    -cp \"$ES_CLASSPATH\" \\\r\n    org.elasticsearch.bootstrap.Elasticsearch \\\r\n    \"$@\" &lt;&lt;&lt;\"$KEYSTORE_PASSWORD\"\r\n<\/code><\/pre>\n<h2>org.elasticsearch.bootstrap.Elasticsearch#main() &#8211;&gt; org.elasticsearch.bootstrap.Elasticsearch\u7684\u4e3b\u51fd\u6570()<\/h2>\n<p>entry point\u7684\u4ee3\u7801\u5982\u4e0b:<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d41a537434c4406c967f2\/12-0.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2021-11-14 7.48.53.png\" \/><\/div>\n<p>\u9700\u8981\u505a\u7684\u4e8b\u60c5\u5982\u4e0b\u6240\u8ff0\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u8d77\u52d5\u30b3\u30de\u30f3\u30c9\u304b\u3089DNS Cache Policy\u3092\u8a2d\u5b9a\u3059\u308b\u306a\u3089\u3001DNS Cache Policy\u3092\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3059\u308b<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">SecurityManager\u3092\u8a2d\u5b9a\u3001checkPermission\u3067\u5168\u90e8\u306e\u6a29\u9650\u3092\u8a31\u53ef<\/ul>\n<div>Java\u7684SecurityManager\u4f1a\u68c0\u67e5\u53ef\u80fd\u4f1a\u635f\u5bb3\u5b89\u5168\u6027\u7684\u64cd\u4f5c\uff08\u5982\u4fee\u6539\u6587\u4ef6\u3001\u5957\u63a5\u5b57\u7b49\uff09\u7684\u6267\u884c\u6743\u9650\uff0c\u5982\u679c\u6709\u6743\u9650\uff0c\u5219\u6267\u884c\u64cd\u4f5c\uff0c\u5426\u5219\u629b\u51fa\u5f02\u5e38\u3002<\/div>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d41a537434c4406c967f2\/16-0.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2021-11-14 16.25.10.png\" \/><\/div>\n<div>Java \u7684 ShutdownHook \u5728\u63a5\u6536\u5230 JVM \u7684\u5173\u95ed\u901a\u77e5\u540e\uff0c\u8c03\u7528 ShutdownHook \u5185\u7684\u65b9\u6cd5\uff0c\u6267\u884c\u6e05\u7406\u8fc7\u7a0b\uff0c\u4f7f JVM \u53ef\u4ee5\u5e73\u7a33\u5730\u5173\u95ed\u3002<\/div>\n<p>Command#mainWithoutErrorHandling<\/p>\n<p>\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u30d1\u30fc\u30b9\u3057\u3066terminal\u3092\u8a2d\u7f6e\u3057\u3066\u3001EnvironmentAwareCommand\u306eexecute()\u3092\u5b9f\u884c\uff08Command\u30af\u30e9\u30b9\u306e\u62bd\u8c61execute\u30e1\u30bd\u30c3\u30c9\u3092\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c8\uff09<\/p>\n<p>EnvironmentAwareCommand#execute<\/p>\n<p>\u30d1\u30e9\u30e1\u30fc\u30bf\u304b\u3089Setting\u3092\u5224\u5225\u3001Setting\u304c\u306a\u3051\u308c\u3070vm options\u304b\u3089path.data\u3001path.home\u3001path.logs\u3092Setting\u306b\u914d\u7f6e<br \/>\nexecute(terminal, options, createEnv(settings))\u3092\u547c\u3073\u51fa\u3057<\/p>\n<p>EnvironmentAwareCommand#createEnv<\/p>\n<p>prepareEnvironment\u3092\u7d4c\u7531elasticsearch.yml\u3092\u30ed\u30fc\u30c9\u3057\u3066\u3001Environment\u3092\u4f5c\u6210<\/p>\n<p>Elasticsearch#execute<\/p>\n<p>daemonizer\/pidFile\/quiet\u306e\u5024\u3092\u53d6\u5f97\u3001Bootstrap\u306einit\u3092\u547c\u3073\u51fa\u3057<\/p>\n<h2>org.elasticsearch.bootstrap.Bootstrap<br \/>\n\u5f39\u6027\u641c\u7d22\u7684\u5f15\u5bfc\u7a0b\u5e8f<\/h2>\n<p>\u521d\u59cb\u5316\u4ee3\u7801\u5f88\u591a\uff0c\u53ea\u4fdd\u7559\u94fe\u63a5\uff1a<br \/>\nhttps:\/\/github.com\/elastic\/elasticsearch\/blob\/fc519e380029c6daecc950802435f7266f08708e\/server\/src\/main\/java\/org\/elasticsearch\/bootstrap\/Bootstrap.java#L334<\/p>\n<p>\u9996\u5148\u521b\u5efa\u4e00\u4e2aBootstrap\u5b9e\u4f8b\uff0c\u7136\u540e\u542f\u52a8KeepAlive\u7ebf\u7a0b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">private<\/span> <span class=\"kd\">final<\/span> <span class=\"nc\">CountDownLatch<\/span> <span class=\"n\">keepAliveLatch<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">CountDownLatch<\/span><span class=\"o\">(<\/span><span class=\"mi\">1<\/span><span class=\"o\">);<\/span>\r\n    <span class=\"kd\">private<\/span> <span class=\"kd\">final<\/span> <span class=\"nc\">Thread<\/span> <span class=\"n\">keepAliveThread<\/span><span class=\"o\">;<\/span>\r\n    <span class=\"kd\">private<\/span> <span class=\"kd\">final<\/span> <span class=\"nc\">Spawner<\/span> <span class=\"n\">spawner<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">Spawner<\/span><span class=\"o\">();<\/span>\r\n\r\n    <span class=\"cm\">\/** creates a new instance *\/<\/span>\r\n    <span class=\"nc\">Bootstrap<\/span><span class=\"o\">()<\/span> <span class=\"o\">{<\/span>\r\n        <span class=\"n\">keepAliveThread<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">Thread<\/span><span class=\"o\">(<\/span><span class=\"k\">new<\/span> <span class=\"nc\">Runnable<\/span><span class=\"o\">()<\/span> <span class=\"o\">{<\/span>\r\n            <span class=\"nd\">@Override<\/span>\r\n            <span class=\"kd\">public<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">run<\/span><span class=\"o\">()<\/span> <span class=\"o\">{<\/span>\r\n                <span class=\"k\">try<\/span> <span class=\"o\">{<\/span>\r\n                    <span class=\"c1\">\/\/count<\/span>\r\n                    <span class=\"n\">keepAliveLatch<\/span><span class=\"o\">.<\/span><span class=\"na\">await<\/span><span class=\"o\">();<\/span>\r\n                <span class=\"o\">}<\/span> <span class=\"k\">catch<\/span> <span class=\"o\">(<\/span><span class=\"nc\">InterruptedException<\/span> <span class=\"n\">e<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n                    <span class=\"c1\">\/\/ bail out<\/span>\r\n                <span class=\"o\">}<\/span>\r\n            <span class=\"o\">}<\/span>\r\n        <span class=\"o\">},<\/span> <span class=\"s\">\"elasticsearch[keepAlive\/\"<\/span> <span class=\"o\">+<\/span> <span class=\"nc\">Version<\/span><span class=\"o\">.<\/span><span class=\"na\">CURRENT<\/span> <span class=\"o\">+<\/span> <span class=\"s\">\"]\"<\/span><span class=\"o\">);<\/span>\r\n        <span class=\"n\">keepAliveThread<\/span><span class=\"o\">.<\/span><span class=\"na\">setDaemon<\/span><span class=\"o\">(<\/span><span class=\"kc\">false<\/span><span class=\"o\">);<\/span>\r\n        <span class=\"c1\">\/\/ keep this thread alive (non daemon thread) until we shutdown<\/span>\r\n        <span class=\"nc\">Runtime<\/span><span class=\"o\">.<\/span><span class=\"na\">getRuntime<\/span><span class=\"o\">().<\/span><span class=\"na\">addShutdownHook<\/span><span class=\"o\">(<\/span><span class=\"k\">new<\/span> <span class=\"nc\">Thread<\/span><span class=\"o\">()<\/span> <span class=\"o\">{<\/span>\r\n            <span class=\"nd\">@Override<\/span>\r\n            <span class=\"kd\">public<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">run<\/span><span class=\"o\">()<\/span> <span class=\"o\">{<\/span>\r\n                <span class=\"c1\">\/\/thread\u7d42\u4e86\u6642\u3001KeepAliveLatch\u304c0\u306b\u306a\u3063\u3066\u3001keepAliveThread\u7d42\u4e86<\/span>\r\n                <span class=\"n\">keepAliveLatch<\/span><span class=\"o\">.<\/span><span class=\"na\">countDown<\/span><span class=\"o\">();<\/span>\r\n            <span class=\"o\">}<\/span>\r\n        <span class=\"o\">});<\/span>\r\n    <span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<div>CountDownLatch\u662f\u4e00\u79cd\u53ef\u4ee5\u7b49\u5f85\u5176\u4ed6\u7ebf\u7a0b\u5904\u7406\u7684\u673a\u5236\u3002\u53ef\u4ee5\u5728\u5176\u4ed6\u7ebf\u7a0b\u5904\u7406\u5b8c\u540e\u8fdb\u884c\u5904\u7406\u3002<\/div>\n<div>Java \u5305\u542b\u7528\u6237\u7ebf\u7a0b\u548c\u5b88\u62a4\u7ebf\u7a0b\u3002<br \/>\nJVM \u7684\u7ec8\u6b62\u6d41\u7a0b\u5982\u4e0b\uff1a<br \/>\n1. \u5f53\u4e0d\u5b58\u5728\u7528\u6237\u7ebf\u7a0b\u65f6\uff0c\u5f00\u59cb JVM \u7684\u7ec8\u6b62\u3002<br \/>\n2. JVM \u7ed3\u675f\u6240\u6709\u7684\u5b88\u62a4\u7ebf\u7a0b\u3002<br \/>\n3. JVM \u7ec8\u6b62\u3002<\/div>\n<p>\u4fdd\u6301\u6d3b\u52a8\u7ebf\u7a0b\u5728\u8bbe\u7f6e\u4e3a CountDownLatch \u548c\u7528\u6237\u7ebf\u7a0b\u7684\u60c5\u51b5\u4e0b\u8bbe\u7f6e\u3002<br \/>\n\u6240\u4ee5\uff0c\u8fd9\u91cc\u7684\u6d41\u7a0b\u662f<\/p>\n<div>1. JVM\u63a5\u6536\u5230\u7ec8\u6b62\u8bf7\u6c42<br \/>\n2. \u6267\u884c shutdownHook<br \/>\n3. \u6267\u884c keepAliveLatch.countDown()<br \/>\n4. \u5f53 KeepAliveLatch \u4e3a0\u65f6\uff0c\u7ec8\u6b62 keepAliveThread<br \/>\n5. JVM \u7ec8\u6b62<\/div>\n<p>\u542f\u52a8KeepAlive\u7ebf\u7a0b\u540e\uff0c\u5173\u4e8eBootstrap\u7684init()\u51fd\u6570\u7684\u5927\u81f4\u8fc7\u7a0b\u5982\u4e0b\uff1a<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Setting\u3068config\u306b\u3088\u3063\u3066ES\u5b9f\u884c\u6642Environment\u3092\u4f5c\u308b<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3068\u30ed\u30b0\u5468\u308a\u306e\u8a2d\u5b9a<\/ul>\n<\/li>\n<\/ul>\n<p>keystore\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u8a2d\u5b9a\u3092\u30ed\u30fc\u30c9\u3059\u308b\u3002keystore\u30d5\u30a1\u30a4\u30eb\u306a\u3044\u6642\u306b\u4f5c\u3063\u3066\u4fdd\u5b58\u3059\u308b\u3002keystore\u30d5\u30a1\u30a4\u30eb\u3042\u308b\u6642\u306b\u5fa9\u53f7\u5316\u3057\u3066\u3001keystore\u3092\u66f4\u65b0\u3059\u308b<br \/>\nsetNodeName \u30ed\u30b0\u3092\u30d7\u30ea\u30f3\u30c8\u6642Node\u540d\u3092\u8a2d\u5b9a\u3001log4j2.properties\u306e\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u304b\u3089\u30ed\u30b0\u306e\u8a2d\u5b9a\u3092\u30ed\u30fc\u30c9<\/p>\n<p>PID\u30d5\u30a1\u30a4\u30eb\u304c\u3042\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3001\u306a\u3051\u308c\u3070\u4f5c\u308b\u3001\u73fe\u5728\u306epid\u3092\u66f8\u304d\u8fbc\u3080<br \/>\nLucene\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u78ba\u8a8d<br \/>\nsetDefaultUncaughtExceptionHandler\u3067Catch\u3055\u308c\u306a\u3044\u4f8b\u5916\u306e\u51e6\u7406\u65b9\u6cd5\u3092\u8a2d\u7f6e<\/p>\n<div>\u6709\u4e9b\u60c5\u51b5\u4e0b\uff0c\u5728\u591a\u7ebf\u7a0b\u4e2d\u65e0\u6cd5\u6355\u83b7\u5176\u4ed6\u7ebf\u7a0b\u629b\u51fa\u7684\u5f02\u5e38\u3002\u6355\u83b7\u548c\u5904\u7406\u5f02\u5e38\u662f\u5fc5\u9700\u7684\uff0cUncaughtExceptionHandler\u5c31\u662f\u7528\u4e8e\u8fd9\u6837\u7684\u5904\u7406\u3002<\/div>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">INSTANCE.setup(true, environment);INSTANCE.start();<\/ul>\n<\/li>\n<\/ul>\n<p>Node\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u4f5c\u308b\u305f\u3081\u6e96\u5099\u3057\u3066\u3001Node\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u4f5c\u3063\u3066\u3001Node\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u8d77\u52d5<\/p>\n<h1>\u60f3\u6cd5\u7b49<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Elasticsearch\u306e\u8d77\u52d5\u3060\u3051\u3067\u3053\u3093\u306a\u30d7\u30ed\u30bb\u30b9\u304c\u3042\u308b\u3053\u3068\u3092\u7406\u89e3\u3067\u304d\u3066\u3001\u7d30\u304b\u3044\u7c92\u5ea6\u3067Elasticsearch\u306e\u4ed5\u7d44\u307f\u3092\u628a\u63e1\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">CountDownLatch\u306a\u3069\u306e\u30d7\u30ed\u30bb\u30b9\u8abf\u67fb\u306b\u3088\u308a\u3001Java\u306e\u30de\u30eb\u30c1\u30b9\u30ec\u30c3\u30c9\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306b\u8a73\u3057\u304f\u306a\u308a\u307e\u3057\u305f\u3002<\/ul>\n<h1>\u8bf7\u63d0\u4f9b\u4e00\u4e9b\u4e0a\u9762\u6240\u63d0\u5230\u7684\u4e2d\u56fd\u6c11\u65cf\u7684\u88c5\u626e\u548c\u4f20\u7edf\u7684\u6750\u6599\u7684\u53c2\u8003\u3002<\/h1>\n","protected":false},"excerpt":{"rendered":"<p>\u672c\u6587\u662f\u300a2021\u5e74\u5723\u8bde\u65e5\u5386\u300b\u7b2c18\u7bc7\u6587\u7ae0\u3002 \u9996\u5148 \u6700\u8fd1\uff0c\u6211\u6709\u673a\u4f1a\u5f00\u53d1Elasticsearch\u7684\u81ea\u5b9a\u4e49\u63d2\u4ef6\uff0c\u5e76 [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-40611","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - 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