content/references/java-chassis/en_US/build-provider/definition/isolate-relationship/index.html (317 lines of code) (raw):
<!DOCTYPE html>
<html class="writer-html5" lang="en" >
<head>
<meta charset="utf-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<link rel="shortcut icon" href="../../../img/favicon.ico" />
<title>Isolate relationship - ServiceComb Java Chassis Developers Guide</title>
<link rel="stylesheet" href="../../../css/theme.css" />
<link rel="stylesheet" href="../../../css/theme_extra.css" />
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/10.5.0/styles/github.min.css" />
<script>
// Current page data
var mkdocs_page_name = "Isolate relationship";
var mkdocs_page_input_path = "build-provider/definition/isolate-relationship.md";
var mkdocs_page_url = null;
</script>
<script src="../../../js/jquery-3.6.0.min.js" defer></script>
<!--[if lt IE 9]>
<script src="../../../js/html5shiv.min.js"></script>
<![endif]-->
<script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/10.5.0/highlight.min.js"></script>
<script>hljs.initHighlightingOnLoad();</script>
</head>
<body class="wy-body-for-nav" role="document">
<div class="wy-grid-for-nav">
<nav data-toggle="wy-nav-shift" class="wy-nav-side stickynav">
<div class="wy-side-scroll">
<div class="wy-side-nav-search">
<a href="../../.." class="icon icon-home"> ServiceComb Java Chassis Developers Guide
</a><div role="search">
<form id ="rtd-search-form" class="wy-form" action="../../../search.html" method="get">
<input type="text" name="q" placeholder="Search docs" title="Type search term here" />
</form>
</div>
</div>
<div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="Navigation menu">
<ul>
<li class="toctree-l1"><a class="reference internal" href="../../..">Introduction</a>
</li>
</ul>
<p class="caption"><span class="caption-text">Getting Started</span></p>
<ul>
<li class="toctree-l1"><a class="reference internal" href="../../../start/terminology/">Glossary</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../start/architecture/">Architecture</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../start/development-environment/">Development environment</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../start/first-sample/">Develop the first microservice</a>
</li>
</ul>
<p class="caption"><span class="caption-text">Development Service Provider</span></p>
<ul>
<li class="toctree-l1"><a class="reference internal" href="../service-definition/">Service definition</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../define-contract/">Service contract definition</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../code-first/">Implicit API definition</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../swagger-annotation/">Use Swagger annotations</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../springmvc/">Develop with SpringMVC</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../jaxrs/">Develop with JAX-RS</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../transparent-rpc/">Develop with Transparent RPC</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../interface-constraints/">Interface definition and data type</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../listen-address-and-publish-address/">Service listening address and publishing address</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../thread-pool/">Thread pool</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="#">Service Configuration</a>
<ul>
<li class="toctree-l2"><a class="reference internal" href="../../configuration/ratelimite-strategy/">Rate Limiting Policy</a>
</li>
<li class="toctree-l2"><a class="reference internal" href="../../configuration/downgrade-strategy/">Fallback Policy</a>
</li>
<li class="toctree-l2"><a class="reference internal" href="../../configuration/parameter-validator/">Parameter Validator</a>
</li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../bootup/">Boot-up Process</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../access-log-configuration/">Access Log Configuration</a>
</li>
</ul>
<p class="caption"><span class="caption-text">Writing Service Consumer</span></p>
<ul>
<li class="toctree-l1"><a class="reference internal" href="../../../build-consumer/common-configuration/">Consumer common configuration</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../build-consumer/using-resttemplate/">Using Rest Template</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../build-consumer/using-AsyncRestTemplate/">Using AsyncRestTemplate</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../build-consumer/develop-consumer-using-rpc/">Using with RPC</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../build-consumer/with-contract/">Contract</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="#">Invoke control</a>
<ul>
<li class="toctree-l2"><a class="reference internal" href="../../../build-consumer/circuit-breaker/">Circuit Breaker</a>
</li>
<li class="toctree-l2"><a class="reference internal" href="../../../build-consumer/flow-control/">Flow Control</a>
</li>
<li class="toctree-l2"><a class="reference internal" href="../../../build-consumer/fault-injection/">Fault Injection</a>
</li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../build-consumer/3rd-party-service-invoke/">Invoke 3rd-party REST services</a>
</li>
</ul>
<p class="caption"><span class="caption-text">Transports</span></p>
<ul>
<li class="toctree-l1"><a class="reference internal" href="../../../transports/rest-over-servlet/">REST over Servlet</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../transports/rest-over-vertx/">REST over Vertx</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../transports/highway-rpc/">Highway</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../transports/http2/">HTTP2</a>
</li>
</ul>
<p class="caption"><span class="caption-text">General Development</span></p>
<ul>
<li class="toctree-l1"><a class="reference internal" href="../../../general-development/visit-sc/">Access Service Center</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../general-development/metrics/">Metrics</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../general-development/microservice-invocation-chain/">Microservice invocation chain</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../general-development/customized-tracing/">Customized-Tracing</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../general-development/local-develop-test/">Local development and testing</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../general-development/http-filter/">Http Filter</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../general-development/file-upload/">File Uploading</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../general-development/file-download/">File Downloading</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../general-development/reactive/">Reactive Programing</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../general-development/dnsconfig/">DNS Custom Configuration</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../general-development/dai-li-she-zhi/">Proxy Settings</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../general-development/report-framework-version/">Report framework version</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../general-development/cross-app-invocation/">Cross-application invocation</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../general-development/secret-field/">Customized serialization and deserialization</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../general-development/context/">Using Context to pass control messages</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../general-development/produceprocess/">Return value serialization extension</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../general-development/CORS/">CORS mechanism</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../general-development/AlarmEvent/">Get fuse and instance isolation alarm event information</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../general-development/shutdown/">Shutdown gracefully</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../general-development/error-handling/">Handling exceptions</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../general-development/multienvironment/">Multi-environment isolation between microservice instances</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../general-development/thread-model/">Thread Model</a>
</li>
</ul>
<p class="caption"><span class="caption-text">Configuration</span></p>
<ul>
<li class="toctree-l1"><a class="reference internal" href="../../../config/general-config/">General config</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../config/inject-config/">Configuration injection</a>
</li>
</ul>
<p class="caption"><span class="caption-text">Service Capability Open</span></p>
<ul>
<li class="toctree-l1"><a class="reference internal" href="../../../edge/open-service/">Intruductions</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../edge/by-servicecomb-sdk/">Using Edge Service</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../edge/nginx/">Using confd and Nginx as edge services</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../edge/zuul/">Use zuul as edge services</a>
</li>
</ul>
<p class="caption"><span class="caption-text">Service Packing and Running</span></p>
<ul>
<li class="toctree-l1"><a class="reference internal" href="../../../packaging/standalone/">Standalone mode</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../packaging/web-container/">WEB container mode</a>
</li>
</ul>
<p class="caption"><span class="caption-text">Micro Service Security</span></p>
<ul>
<li class="toctree-l1"><a class="reference internal" href="../../../security/tls/">Using TLS</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../security/rsa/">Using RSA certification</a>
</li>
</ul>
<p class="caption"><span class="caption-text">Using java chassis in Spring Boot</span></p>
<ul>
<li class="toctree-l1"><a class="reference internal" href="../../../using-java-chassis-in-spring-boot/using-java-chassis-in-spring-boot/">Intruductions</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../using-java-chassis-in-spring-boot/components-for-spring-boot/">spring boot starter for java-chassis</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../using-java-chassis-in-spring-boot/java-application/">JAVA application development</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../using-java-chassis-in-spring-boot/web-application/">Web development method development</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../using-java-chassis-in-spring-boot/diff-between-java-web/">The difference between JAVA application method and Web development method</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../using-java-chassis-in-spring-boot/diff-spring-mvc/">The difference in Spring MVC mode</a>
</li>
</ul>
<p class="caption"><span class="caption-text">Handlers reference</span></p>
<ul>
<li class="toctree-l1"><a class="reference internal" href="../../../references-handlers/intruduction/">Intruductions</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../references-handlers/loadbalance/">Load Balancing</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../references-handlers/publickey/">Public key authentication</a>
</li>
</ul>
<p class="caption"><span class="caption-text">FAQ</span></p>
<ul>
<li class="toctree-l1"><a class="reference internal" href="../../../question-and-answer/question_answer/">Q & A</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../question-and-answer/faq/">FAQ</a>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../question-and-answer/interface-compatibility/">Micro Service Interface Compatibility FAQ</a>
</li>
</ul>
</div>
</div>
</nav>
<section data-toggle="wy-nav-shift" class="wy-nav-content-wrap">
<nav class="wy-nav-top" role="navigation" aria-label="Mobile navigation menu">
<i data-toggle="wy-nav-top" class="fa fa-bars"></i>
<a href="../../..">ServiceComb Java Chassis Developers Guide</a>
</nav>
<div class="wy-nav-content">
<div class="rst-content"><div role="navigation" aria-label="breadcrumbs navigation">
<ul class="wy-breadcrumbs">
<li><a href="../../.." class="icon icon-home" alt="Docs"></a> »</li>
<li>Isolate relationship</li>
<li class="wy-breadcrumbs-aside">
</li>
</ul>
<hr/>
</div>
<div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article">
<div class="section" itemprop="articleBody">
<h2 id="_1">场景描述</h2>
<p>进行服务发现的时候，开发者需要了解本微服务能够发现那些其他服务的实例。ServiceComb提供了分层次的实例隔离。</p>
<h1 id="_2">微服务实例分层管理</h1>
<p>要了解实例间的隔离层次，首先需要了解ServiceComb定义的一个体系完备的微服务系统结构：</p>
<p><img alt="" src="../../../assets/sc-meta.png" /></p>
<p>在微服务系统结构中，顶层是“项目”，在项目下分为多个租户，租户中包含多个应用，而每个应用由包含多个环境，即测试和生产环境可以分开。在某个特定应用的特定环境中，包含多个微服务，而一个微服务又可以同时存在多个版本。以上，是所有静态元数据的范畴，某个特定服务的特定版本则包含多个在运行时注册上来的微服务实例，因为服务实例的信息在运行时随着系统的伸缩、故障等原因是动态变化的，所以服务实例的路由信息又为动态数据。通过分层管理微服务的这些数据，也就自然而然的实现了实例之间的逻辑隔离。</p>
<h1 id="_3">隔离层次说明</h1>
<p>ServiceComb支持自定义分层配置，满足用户的实例分层管理需求，以下是具体配置说明。</p>
<ul>
<li>应用ID</li>
</ul>
<p>通过APPLICATIOIN_ID来定义，缺省值为default。微服务在发现实例的时候，缺省只能够被相同APPLICATIOIN_ID下的消费者发现。</p>
<ul>
<li>Domain名称</li>
</ul>
<p>通过cse.config.client.domainName来定义，缺省值为default。作为微服务提供者，用于表明自身所属租户信息。微服务在发现实例的时候，只能被相同租户下的消费者发现。</p>
<ul>
<li>数据中心信息</li>
</ul>
<p>数据中心包括3个属性：cse.datacenter.name， cse.datacenter.region, cse.datacenter.availableZone。数据中心信息不提供隔离能力，微服务可以发现其他数据中心的实例。但是可以通过启用实例亲和性，来优先往指定的区域或者Zone发消息：</p>
<pre><code>cse:
loadbalance:
serverListFilters: zoneaware
serverListFilter:
zoneaware:
className: org.apache.servicecomb.loadbalance.filter.ZoneAwareServerListFilterExt
</code></pre>
<p>这样配置后，客户端在路由的时候，会优先将请求转发到zone/region都相同的实例，然后是region相同，但zone不相同的实例，都不相同的时候，则按照路由规则选择一个。亲和性不是逻辑隔离，只要实例之间网络是联通的，那么都有可能访问到；如果网络不通，则会访问失败。</p>
<ul>
<li>环境信息</li>
</ul>
<p>在yaml文件里通过service_description.environment来配置，同时支持通过环境变量SERVICECOMB_ENV配置，仅支持以下枚举值 development,testing,acceptance,production，缺省值为""(空)。微服务在发现实例的时候，缺省只能够被相同environment下的消费者发现。</p>
<pre><code>service_description:
environment: production
</code></pre>
<h1 id="_4">与华为公有云概念的对应关系</h1>
<p>华为公有云有类似的概念，应用、租户、Project、Cluster等，在实际应用的时候，可以分别对应到ServiceComb的应用、租户、Domain、Zone等信息。比如在公有云上如果Cluster共享Project，那么就可以通过zone来对应Cluster，实现集群之间的亲和性访问。</p>
</div>
</div><footer>
<hr/>
<div role="contentinfo">
<!-- Copyright etc -->
</div>
Built with <a href="https://www.mkdocs.org/">MkDocs</a> using a <a href="https://github.com/readthedocs/sphinx_rtd_theme">theme</a> provided by <a href="https://readthedocs.org">Read the Docs</a>.
</footer>
</div>
</div>
</section>
</div>
<div class="rst-versions" role="note" aria-label="Versions">
<span class="rst-current-version" data-toggle="rst-current-version">
</span>
</div>
<script>var base_url = '../../..';</script>
<script src="../../../js/theme_extra.js" defer></script>
<script src="../../../js/theme.js" defer></script>
<script src="../../../search/main.js" defer></script>
<script defer>
window.onload = function () {
SphinxRtdTheme.Navigation.enable(true);
};
</script>
</body>
</html>