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<a href=/v1.20/zh/docs/setup/getting-started class="btn btn--primary" id=try-istio>试用 Istio</a></div></div><form id=search-form class=search name=cse role=search><input type=hidden name=cx value=002184991200833970123:iwwf17ikgf4>
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<button id=search-close title=取消搜索 type=reset aria-label=取消搜索><svg class="icon menu-close"><use xlink:href="/v1.20/img/icons.svg#menu-close"/></svg></button></form></nav></header><div class=banner-container></div><article class=post itemscope itemtype=http://schema.org/BlogPosting><div class=header-content><h1>处理 Docker Hub 速率限制</h1><p>如何确保您的集群不受 Docker Hub 速率限制的影响。</p></div><p class=post-author>Dec 7, 2020 <span>| </span>By John Howard - Google</p><div><aside class="callout warning"><div class=type><svg class="large-icon"><use xlink:href="/v1.20/img/icons.svg#callout-warning"/></svg></div><div class=content>该博客文章是在 Istio 1.8 的版本下编写的,因此其中某些内容现在可能已过时。</div></aside></div><div><p>从 2020 年 11 月 20 日开始Docker Hub 在镜像拉取中引入了<a href=https://www.docker.com/increase-rate-limits>速率限制</a></p><p>因为 Istio 使用 <a href=https://hub.docker.com/u/istio>Docker Hub</a> 作为默认镜像仓库,所以在大型集群上使用可能会由于超出速率限制导致 Pod 无法启动。这对 Istio 来说有很大问题,因为通常 Istio 的 sidecar 镜像与集群中的大多数 Pod 是一起启动的。</p><h2 id=mitigation>防范</h2><p>Istio 允许您指定一个自定义 docker 镜像仓库,可用于从您的私有仓库中获取容器镜像。在安装时通过 <code>--set hub=&lt;some-custom-registry></code> 来配置。</p><p>Istio 在 <a href=https://gcr.io/istio-release>Google 容器仓库</a> 提供了官方镜像。可以通过 <code>--set hub=gcr.io/istio-release</code> 来配置。这适用于 Istio 1.5 及以上版本。</p><p>或者,您可以将 Istio 官方镜像拷贝到您自己的镜像仓库中。根据您的使用场景,如果您的集群运行在特定镜像仓库的环境中(例如,在 AWS 上,您可能希望将镜像映射到 Amazon ECR或者您对安全性有严格的要求对公共仓库的访问受限制则此操作特别有用。您可以使用以下脚本完成此操作</p><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ SOURCE_HUB=istio
$ DEST_HUB=my-registry # Replace this with the destination hub
$ IMAGES=( install-cni operator pilot proxyv2 ) # Images to mirror.
$ VERSIONS=( 1.7.5 1.8.0 ) # Versions to copy
$ VARIANTS=( &#34;&#34; &#34;-distroless&#34; ) # Variants to copy
$ for image in $IMAGES; do
$ for version in $VERSIONS; do
$ for variant in $VARIANTS; do
$ name=$image:$version$variant
$ docker pull $SOURCE_HUB/$name
$ docker tag $SOURCE_HUB/$name $DEST_HUB/$name
$ docker push $DEST_HUB/$name
$ docker rmi $SOURCE_HUB/$name
$ docker rmi $DEST_HUB/$name
$ done
$ done
$ done
</code></pre></div><nav class=pagenav><div class=left><a title="Istio 成立大会将于 2 月底举行。" href=/v1.20/zh/blog/2020/istiocon-2021/ class=next-link><svg class="icon left-arrow"><use xlink:href="/v1.20/img/icons.svg#left-arrow"/></svg>加入我们,参加 2021 年的第一届 IstioCon</a></div><div class=right><a title="宣布 4 名最新的 Istio 指导委员会成员。" href=/v1.20/zh/blog/2020/steering-election-results/ class=next-link>2020 年指导委员会选举结果<svg class="icon right-arrow"><use xlink:href="/v1.20/img/icons.svg#right-arrow"/></svg></a></div></nav></article><footer class=footer><div class="footer-wrapper container-l"><div class="user-links footer-links"><a class=channel title='Istio 的代码在 GitHub 上开发' href=https://github.com/istio/community aria-label=GitHub><svg class="icon github"><use xlink:href="/v1.20/img/icons.svg#github"/></svg>
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