{"id":9510,"date":"2025-11-23T17:16:17","date_gmt":"2025-11-23T09:16:17","guid":{"rendered":"\/?p=9510"},"modified":"2025-11-23T17:16:17","modified_gmt":"2025-11-23T09:16:17","slug":"%e4%bb%8e-etcd-%e5%90%8d%e5%ad%97%e7%9a%84%e7%94%b1%e6%9d%a5%ef%bc%8c%e5%88%b0%e5%ae%89%e8%a3%85%e9%83%a8%e7%bd%b2%e5%92%8c%e4%bd%bf%e7%94%a8%e5%a7%bf%e5%8a%bf","status":"publish","type":"post","link":"\/?p=9510","title":{"rendered":"\u4ece etcd \u540d\u5b57\u7684\u7531\u6765\uff0c\u5230\u5b89\u88c5\u90e8\u7f72\u548c\u4f7f\u7528\u59ff\u52bf"},"content":{"rendered":"<h2>\u6982\u8ff0<\/h2>\n<p>\u672c\u6b21\u5206\u4eab\u5206\u5e03\u5f0f\u795e\u5668<code>etcd<\/code>[1]\u7684 5 \u79cd\u90e8\u7f72\u65b9\u5f0f\u548c 10 \u79cd\u4f7f\u7528\u59ff\u52bf\u3002<\/p>\n<p>\u5728\u5b66\u4e60 etcd \u4e4b\u524d\uff0c\u6211\u4eec\u5148\u6765\u804a\u4e00\u804a <code>etcd \u540d\u5b57\u7684\u7531\u6765<\/code>\u3002etcd \u4e2d\u7684 etc \u53d6\u81ea unix \u7cfb\u7edf\u7684<code>\/etc<\/code>\u76ee\u5f55\uff0c\u518d\u52a0\u4e0a\u4e00\u4e2a<code>d<\/code>\u4ee3\u8868<code>distributed system<\/code>\u5c31\u7ec4\u6210\u4e86 etcd\u3002\u5728 unix \u7cfb\u7edf\u4e2d \/etc \u76ee\u5f55\u7528\u4e8e\u5b58\u50a8\u7cfb\u7edf\u7684\u914d\u7f6e\u6570\u636e\uff0c\u5355\u4ece\u540d\u5b57\u770b etcd \u53ef\u7528\u4e8e\u5b58\u50a8\u5206\u5e03\u5f0f\u7cfb\u7edf\u7684\u914d\u7f6e\u6570\u636e\uff0c\u6709\u65f6\u5019\u4e5f\u628a etcd \u7b80\u5355\u7406\u89e3\u4e3a\u5206\u5e03\u5f0f \/etc \u914d\u7f6e\u76ee\u5f55\u3002<\/p>\n<h2>etcd \u7b80\u4ecb<\/h2>\n<p>etcd \u662f\u4e00\u4e2a\u53ef\u9760\u7684\u5206\u5e03\u5f0f key-value \u5b58\u50a8\u7cfb\u7edf\uff0c\u4e3b\u8981\u7528\u4e8e<code>\u914d\u7f6e\u5171\u4eab<\/code>\u548c<code>\u670d\u52a1\u6ce8\u518c\u548c\u53d1\u73b0<\/code>\uff0c\u5177\u6709\u4ee5\u4e0b\u7279\u6027\uff1a<\/p>\n<ul>\n<li>\u7b80\u5355\uff1a\u57fa\u4e8e gRPC \u5b9a\u4e49\u4e86\u6e05\u6670\u3001\u9762\u5411\u7528\u6237\u7684 API\u3002<\/li>\n<li>\u5b89\u5168\uff1a\u652f\u6301\u53ef\u9009\u7684\u5ba2\u6237\u7aef TLS \u8bc1\u4e66\u81ea\u52a8\u8ba4\u8bc1\u7279\u6027\u3002<\/li>\n<li>\u5feb\u901f\uff1a\u652f\u6301\u6bcf\u79d2 10000 \u6b21\u7684\u5199\u5165\u3002<\/li>\n<li>\u53ef\u9760\uff1a\u57fa\u4e8e Raft \u7b97\u6cd5\u534f\u8bae\u4fdd\u8bc1\u4e00\u81f4\u6027\u3002<\/li>\n<\/ul>\n<p>etcd \u4f7f\u7528 Go \u8bed\u8a00\u5f00\u53d1\uff0c\u5e95\u5c42\u57fa\u4e8e Raft \u5171\u8bc6\u7b97\u6cd5\u7ba1\u7406\u9ad8\u53ef\u7528\u7684\u590d\u5236\u65e5\u5fd7\u3002\u5f53\u524d\u5df2\u7ecf\u88ab\u8bb8\u591a\u516c\u53f8\u7528\u4e8e\u5173\u952e\u751f\u4ea7\u9879\u76ee\uff0c\u6bd4\u5982\uff1aKubernetes\u3001locksmith\u3001vulcand\u3001Doorman \u7b49\u3002<\/p>\n<p>\u5f53\u7136\uff0c\u4e5f\u6709\u5176\u4ed6\u7ec4\u4ef6\u53ef\u4ee5\u63d0\u4f9b\u914d\u7f6e\u5171\u4eab\u548c\u670d\u52a1\u6ce8\u518c\u548c\u53d1\u73b0\u7684\u529f\u80fd\uff0c\u6bd4\u5982\u6700\u4e3a\u5e7f\u6cdb\u548c\u5927\u5bb6\u6700\u4e3a\u719f\u77e5\u7684 Zookeeper\uff0c\u4e5f\u88ab\u5f88\u591a Java \u7cfb\u7684\u77e5\u540d\u5f00\u6e90\u9879\u76ee\u8ba4\u53ef\u548c\u4f7f\u7528\uff0c\u6bd4\u5982\uff1aHadoop\u3001HBase\u3001Kafka \u7b49\u3002<\/p>\n<p>\u4f46 etcd \u662f\u552f\u4e00\u4e00\u4e2a\u53ef\u4ee5\u5ab2\u7f8e\u751a\u81f3\u8d85\u8d8a Zookeeper \u7684\u7ec4\u4ef6\u3002<\/p>\n<p>\u76f8\u8f83\u4e4b\u4e0b\uff0cZookeeper \u6709\u5982\u4e0b\u7f3a\u70b9[3]\uff1a<\/p>\n<ul>\n<li>\u590d\u6742\uff1aZookeeper \u57fa\u4e8e ZAB \u534f\u8bae\uff0c\u5c5e\u4e8e\u7c7b Paxos \u534f\u8bae\uff0c\u800c Paxos \u7b97\u6cd5\u7d20\u4ee5\u590d\u6742\u96be\u61c2\u95fb\u540d\uff1bZookeeper \u7684\u4f7f\u7528\u4e5f\u6bd4\u8f83\u590d\u6742\uff0c\u9700\u8981\u5b89\u88c5\u5ba2\u6237\u7aef\uff0c\u800c\u5b98\u65b9\u76ee\u524d\u53ea\u63d0\u4f9b\u4e86 Java \u548c C \u4e24\u79cd\u8bed\u8a00\u63a5\u53e3\u3002<\/li>\n<li>\u53d1\u5c55\u6162\uff1a\u7531\u4e8e\u57fa\u91d1\u4f1a\u5e9e\u5927\u7684\u7ed3\u6784\u4ee5\u53ca\u677e\u6563\u7684\u7ba1\u7406\uff0c\u5bfc\u81f4\u9879\u76ee\u53d1\u5c55\u7f13\u6162\u3002<\/li>\n<\/ul>\n<p>\u800c etcd \u4f5c\u4e3a\u540e\u8d77\u4e4b\u79c0\uff0c\u5176\u4f18\u70b9\u4e5f\u5f88\u660e\u663e\uff1a<\/p>\n<ul>\n<li>\u7b80\u5355\uff1a\u4f7f\u7528 Go \u8bed\u8a00\u7f16\u5199\u90e8\u7f72\u7b80\u5355\uff1b\u4f7f\u7528 gRPC \u5b9a\u4e49\u63a5\u53e3\uff0c\u652f\u6301\u8de8\u8bed\u8a00\u3001\u8de8\u5e73\u53f0\u7279\u6027\uff1b\u4f7f\u7528\u4e86\u6613\u4e8e\u7528\u6237\u7406\u89e3\u7684 Raft \u7b97\u6cd5\u4fdd\u8bc1\u4e00\u81f4\u6027\uff0c\u4f18\u4e8e Paxos \u7b97\u6cd5\u3002<\/li>\n<li>\u53d1\u5c55\u5feb\uff1aetcd \u6b63\u5904\u4e8e\u9ad8\u901f\u8fed\u4ee3\u5f00\u53d1\u4e2d\u3002<\/li>\n<li>\u6027\u80fd\u4f18\u8d8a\uff1a\u5b98\u65b9\u63d0\u4f9b\u7684\u57fa\u51c6\u6d4b\u8bd5\u6570\u636e\u4e2d\uff0cetcd \u96c6\u7fa4\u53ef\u4ee5\u652f\u6301\u6bcf\u79d2 10000+ \u6b21\u7684\u5199\u5165\uff0c\u6027\u80fd\u4f18\u4e8e Zookeeper\u3002<\/li>\n<li>\u5b89\u5168\u6027\uff1aetcd \u652f\u6301 TLS \u8bbf\u95ee\uff0c\u800c ZooKeeper \u5728\u6743\u9650\u63a7\u5236\u65b9\u9762\u505a\u5f97\u7565\u663e\u7c97\u7cd9\u3002<\/li>\n<\/ul>\n<h2>\u73af\u5883\u642d\u5efa<\/h2>\n<h3>\u4e00\u3001\u672c\u5730\u5b89\u88c5\u5305\u90e8\u7f72<\/h3>\n<p><strong>\u300c\u4e0b\u8f7d\u300d<\/strong>\uff1a\u4e0b\u8f7d\u6700\u65b0\u7684\u5b89\u88c5\u5305\uff08\u5f53\u524d\u6700\u65b0\uff1av3.5.4\uff09\uff0c\u4e0b\u8f7d\u5730\u5740\uff1a<a href=\"https:\/\/github.com\/etcd-io\/etcd\/releases\/\">https:\/\/github.com\/etcd-io\/etcd\/releases\/<\/a><\/p>\n<p><img src=\"https:\/\/mmbiz.qpic.cn\/mmbiz_png\/7EdLicEpRMqApRRibu6SnBssAyHsrPOqwOxruWr0iansJGkx0G0jQXIGsXIcRJNG0w5bBEv6cbd4Y3Rb9PH0UIW0w\/640?wx_fmt=png&amp;tp=webp&amp;wxfrom=5&amp;wx_lazy=1#imgIndex=0\" alt=\"\u56fe\u7247\" \/><\/p>\n<p><strong>\u300c\u5b89\u88c5\u300d<\/strong>\uff1a\u5728\u89e3\u538b\u540e\u7684\u6587\u4ef6\u76ee\u5f55\u4e0b<code>etcd<\/code>\u3001<code>etcdctl<\/code>\u5206\u522b\u4e3a\u5b89\u88c5\u5305\u548c\u5ba2\u6237\u7aef\u7684\u7f16\u8bd1\u540e\u7684\u6267\u884c\u6587\u4ef6\uff0c\u53ef\u4f7f\u7528\u4e09\u79cd\u65b9\u6cd5\u8fdb\u884c\u8fd0\u884c\u914d\u7f6e\u3002<\/p>\n<ul>\n<li>\u65b9\u6cd5\u4e00\uff1a\u89e3\u538b\u76ee\u5f55\u4e0b\u76f4\u63a5\u8fd0\u884c<\/li>\n<li>\u65b9\u6cd5\u4e8c\uff1a\u628a<code>etcd<\/code>\u3001<code>etcdctl<\/code>\u6587\u4ef6\u590d\u5236\u5230<code>GOBIN<\/code>\u76ee\u5f55\u4e0b\u3002<\/li>\n<li>\u65b9\u6cd5\u4e09\uff1a\u5728\u73af\u5883\u53d8\u91cf\u91cc\u6dfb\u52a0<code>etcd<\/code>\u3001<code>etcdctl<\/code>\u6587\u4ef6\u6240\u5728\u7684\u76ee\u5f55\u3002<\/li>\n<\/ul>\n<p>\u6ce8\uff1a\u8fd0\u884c\u8fc7\u7a0b\u4e2d\uff0c\u53ef\u80fd\u4f1a\u6d89\u53ca\u6743\u9650\u95ee\u9898\uff0c\u6388\u6743\u5373\u53ef\u3002<\/p>\n<p><strong>\u300c\u9a8c\u8bc1\u300d<\/strong>\uff1a<\/p>\n<pre><code># \u9a8c\u8bc1 etcd \u7248\u672c\n$ etcd --version\n\netcd Version: 3.5.4\nGit SHA: 08407ff76\nGo Version: go1.16.15\nGo OS\/Arch: darwin\/amd64\n\n# \u9a8c\u8bc1 etcdctl \u7248\u672c\n$ etcdctl version\n\netcdctl version: 3.5.4\nAPI version: 3.5<\/code><\/pre>\n<h3>\u4e8c\u3001\u672c\u5730\u7f16\u8bd1\u90e8\u7f72<\/h3>\n<p><strong>\u300c\u4e0b\u8f7d\u300d<\/strong>\uff1a\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u514b\u9686\u4ee3\u7801<\/p>\n<pre><code># \u4e0b\u8f7d\u6700\u65b0\u7248\n$ git clone https:\/\/github.com\/etcd-io\/etcd.git\n# \u6307\u5b9a\u7248\u672c\u4e0b\u8f7d\n$ git clone -b v3.5.4 https:\/\/github.com\/etcd-io\/etcd.git<\/code><\/pre>\n<p><strong>\u300c\u7f16\u8bd1\u5b89\u88c5\u300d<\/strong>\uff1a<\/p>\n<pre><code># \u7f16\u8bd1\n$ cd etcd\n$ make build\n\n# \u5b89\u88c5\n$ export PATH=&quot;$PATH:`pwd`\/bin&quot;<\/code><\/pre>\n<p><strong>\u300c\u9a8c\u8bc1\u300d<\/strong>\uff1a<\/p>\n<pre><code># \u9a8c\u8bc1 etcd \u7248\u672c\n$ etcd --version\n\n# \u9a8c\u8bc1 etcdctl \u7248\u672c\n$ etcdctl version\n\n# \u9a8c\u8bc1 etcdutl \u7248\u672c\n$ etcdutl version<\/code><\/pre>\n<h3>\u4e09\u3001\u672c\u5730\u96c6\u7fa4\u90e8\u7f72<\/h3>\n<p>\u9996\u5148\u9700\u8981\u5b89\u88c5<code>goreman<\/code>\u7ec4\u4ef6\uff0c\u5b83\u57fa\u4e8e Procfile \u914d\u7f6e\u6587\u4ef6\u7ba1\u7406 etcd \u5e94\u7528\u8fdb\u7a0b\u3002<\/p>\n<pre><code>$ go install github.com\/mattn\/goreman@latest<\/code><\/pre>\n<p><strong>\u300c\u542f\u52a8\u96c6\u7fa4\u300d<\/strong>\uff1a\u6e90\u7801\u76ee\u5f55\u4e0b<code>Procfile<\/code>\u811a\u672c\u5df2\u7ecf\u6784\u5efa\u597d\u4e86\u672c\u5730\u6f14\u793a\u96c6\u7fa4\uff0c\u76f4\u63a5\u8fd0\u884c\u542f\u52a8\u5373\u53ef<\/p>\n<pre><code>$ goreman start<\/code><\/pre>\n<p><strong>\u300c\u9a8c\u8bc1\u300d<\/strong><\/p>\n<pre><code>$ etcdctl member list\n\n8211f1d0f64f3269, started, infra1, http:\/\/127.0.0.1:12380, http:\/\/127.0.0.1:2379, false\n91bc3c398fb3c146, started, infra2, http:\/\/127.0.0.1:22380, http:\/\/127.0.0.1:22379, false\nfd422379fda50e48, started, infra3, http:\/\/127.0.0.1:32380, http:\/\/127.0.0.1:32379, false<\/code><\/pre>\n<p>\u8be5\u811a\u672c\u521b\u5efa\u5305\u542b 3 \u4e2a etcd \u6210\u5458\u8282\u70b9\u7684\u96c6\u7fa4\uff0c\u6bcf\u4e2a\u96c6\u7fa4\u6210\u5458\u90fd\u63a5\u6536\u952e\u503c\u7684\u8bfb\u53d6\u548c\u5199\u5165\u3002\u4e5f\u53ef\u4ee5\u6309\u7167<code>Procfile.learner<\/code>\u811a\u672c\u6307\u5bfc\uff0c\u5b66\u4e60\u96c6\u7fa4\u65b0\u589e\u8282\u70b9\u7684\u64cd\u4f5c\u3002<\/p>\n<h3>\u56db\u3001Docker \u5355\u673a\u90e8\u7f72<\/h3>\n<p>\u6b64\u5904\u901a\u8fc7<code>docker-compose<\/code>\u8fdb\u884c\u5b9e\u9a8c\u914d\u7f6e\u3002<\/p>\n<p><strong>\u300c\u955c\u50cf\u62c9\u53d6\u300d<\/strong><\/p>\n<pre><code>$ docker pull bitnami\/etcd:3.5.2<\/code><\/pre>\n<p><strong>\u300c\u7f16\u8f91docker-compose.yml\u300d<\/strong><\/p>\n<pre><code>version: &#039;3.5&#039;\n\nservices:\n  etcd:\n    container_name: builder-etcd\n    image: bitnami\/etcd:3.5.2\n    ports:\n      - 2379:2379\n    environment:\n      - ALLOW_NONE_AUTHENTICATION=yes\n      - ETCD_AUTO_COMPACTION_MODE=revision\n      - ETCD_AUTO_COMPACTION_RETENTION=1002\n      - ETCD_QUOTA_BACKEND_BYTES=4294967296\n    volumes:\n      - ${DOCKER_ROOT_DIR:-.}\/volumes\/etcd\/data:\/bitnami\/etcd\n\nnetworks:\n  default:\n    name: builder_dev<\/code><\/pre>\n<p><strong>\u300c\u542f\u52a8\u670d\u52a1\u300d<\/strong><\/p>\n<pre><code>$ docker-compose -f docker-compose.yml up<\/code><\/pre>\n<p><strong>\u300c\u9a8c\u8bc1\u300d<\/strong>\uff1a\u9a8c\u8bc1\u96c6\u7fa4\u8282\u70b9\u7684\u7248\u672c<\/p>\n<pre><code>$ docker exec -it builder-etcd \/bin\/bash -c &quot;etcd --version&quot;\n\netcd Version: 3.5.2\nGit SHA: 99018a77b\nGo Version: go1.16.3\nGo OS\/Arch: linux\/amd64<\/code><\/pre>\n<h3>\u4e94\u3001Docker \u96c6\u7fa4\u90e8\u7f72<\/h3>\n<p><strong>\u300c\u7f16\u8f91docker-compose.yml\u300d<\/strong><\/p>\n<pre><code>version: &#039;3.5&#039;\n\nservices:\n  etcd1:\n    container_name: builder-etcd1\n    image: bitnami\/etcd:3.5.2\n    ports:\n      - 12379:2379\n    environment:\n      - ALLOW_NONE_AUTHENTICATION=yes\n      - ETCD_AUTO_COMPACTION_MODE=revision\n      - ETCD_AUTO_COMPACTION_RETENTION=1002\n      - ETCD_QUOTA_BACKEND_BYTES=4294967296\n      - ETCD_NAME=etcd1\n      - ETCD_INITIAL_ADVERTISE_PEER_URLS=http:\/\/etcd1:2380\n      - ETCD_LISTEN_PEER_URLS=http:\/\/0.0.0.0:2380\n      - ETCD_LISTEN_CLIENT_URLS=http:\/\/0.0.0.0:2379\n      - ETCD_ADVERTISE_CLIENT_URLS=http:\/\/etcd1:2379\n      - ETCD_INITIAL_CLUSTER_TOKEN=etcd-cluster\n      - ETCD_INITIAL_CLUSTER=etcd1=http:\/\/etcd1:2380,etcd2=http:\/\/etcd2:2380,etcd3=http:\/\/etcd3:2380\n      - ETCD_INITIAL_CLUSTER_STATE=new\n    volumes:\n      - ${DOCKER_ROOT_DIR:-.}\/volumes\/etcd\/data1:\/bitnami\/etcd\n\n  etcd2:\n    container_name: builder-etcd2\n    image: bitnami\/etcd:3.5.2\n    ports:\n      - 22379:2379\n    environment:\n      - ALLOW_NONE_AUTHENTICATION=yes\n      - ETCD_AUTO_COMPACTION_MODE=revision\n      - ETCD_AUTO_COMPACTION_RETENTION=1002\n      - ETCD_QUOTA_BACKEND_BYTES=4294967296\n      - ETCD_NAME=etcd2\n      - ETCD_INITIAL_ADVERTISE_PEER_URLS=http:\/\/etcd2:2380\n      - ETCD_LISTEN_PEER_URLS=http:\/\/0.0.0.0:2380\n      - ETCD_LISTEN_CLIENT_URLS=http:\/\/0.0.0.0:2379\n      - ETCD_ADVERTISE_CLIENT_URLS=http:\/\/etcd2:2379\n      - ETCD_INITIAL_CLUSTER_TOKEN=etcd-cluster\n      - ETCD_INITIAL_CLUSTER=etcd1=http:\/\/etcd1:2380,etcd2=http:\/\/etcd2:2380,etcd3=http:\/\/etcd3:2380\n      - ETCD_INITIAL_CLUSTER_STATE=new\n    volumes:\n      - ${DOCKER_ROOT_DIR:-.}\/volumes\/etcd\/data2:\/bitnami\/etcd\n\n  etcd3:\n    container_name: builder-etcd3\n    image: bitnami\/etcd:3.5.2\n    ports:\n      - 32379:2379\n    environment:\n      - ALLOW_NONE_AUTHENTICATION=yes\n      - ETCD_AUTO_COMPACTION_MODE=revision\n      - ETCD_AUTO_COMPACTION_RETENTION=1002\n      - ETCD_QUOTA_BACKEND_BYTES=4294967296\n      - ETCD_NAME=etcd3\n      - ETCD_INITIAL_ADVERTISE_PEER_URLS=http:\/\/etcd3:2380\n      - ETCD_LISTEN_PEER_URLS=http:\/\/0.0.0.0:2380\n      - ETCD_LISTEN_CLIENT_URLS=http:\/\/0.0.0.0:2379\n      - ETCD_ADVERTISE_CLIENT_URLS=http:\/\/etcd3:2379\n      - ETCD_INITIAL_CLUSTER_TOKEN=etcd-cluster\n      - ETCD_INITIAL_CLUSTER=etcd1=http:\/\/etcd1:2380,etcd2=http:\/\/etcd2:2380,etcd3=http:\/\/etcd3:2380\n      - ETCD_INITIAL_CLUSTER_STATE=new\n    volumes:\n      - ${DOCKER_ROOT_DIR:-.}\/volumes\/etcd\/data3:\/bitnami\/etcd\n\nnetworks:\n  default:\n    name: builder_dev<\/code><\/pre>\n<p>\u90e8\u7f72\u914d\u7f6e\u6587\u4ef6 docker-compose.yml \u7ec6\u8282\uff0c\u8be6\u89c1<code>etcd docker-compose yml<\/code>[4]<\/p>\n<p><strong>\u300c\u542f\u52a8\u670d\u52a1\u300d<\/strong><\/p>\n<pre><code>$ docker-compose -f docker-compose.yml up<\/code><\/pre>\n<p><strong>\u300c\u9a8c\u8bc1\u300d<\/strong>\uff1a\u9a8c\u8bc1\u96c6\u7fa4\u8282\u70b9\u7684\u7248\u672c<\/p>\n<pre><code>$ docker exec -it builder-etcd1 \/bin\/bash -c &quot;etcd --version&quot;\n$ docker exec -it builder-etcd2 \/bin\/bash -c &quot;etcd --version&quot;\n$ docker exec -it builder-etcd3 \/bin\/bash -c &quot;etcd --version&quot;\n\n# \u8f93\u51fa\netcd Version: 3.5.2\nGit SHA: 99018a77b\nGo Version: go1.16.3\nGo OS\/Arch: linux\/amd64<\/code><\/pre>\n<h2>API \u5b66\u4e60<\/h2>\n<p>\u6b64\u5904\uff0c\u901a\u8fc7\u4f7f\u7528<code>etcdctl<\/code>[5]\u8fdb\u884c API \u5b66\u4e60\u9a8c\u8bc1\uff0cetcdctl \u662f\u4e00\u4e2a\u7528\u4e8e\u4e0e etcd \u670d\u52a1\u5668\u4ea4\u4e92\u7684\u547d\u4ee4\u884c\u5de5\u5177\u3002<\/p>\n<p><strong>\u300c1.\u67e5\u770b\u7248\u672c\u300d<\/strong><\/p>\n<pre><code>$ etcdctl version\n\netcdctl version: 3.6.0-alpha.0\nAPI version: 3.6<\/code><\/pre>\n<p><strong>\u300c2.\u5199\u5165 key\u300d<\/strong><\/p>\n<pre><code>$ etcdctl put foo bar\nOK<\/code><\/pre>\n<p><strong>\u300c3.\u8bfb\u53d6 key\u300d<\/strong><\/p>\n<pre><code>$ etcdctl get foo\nfoo\nbar\n# \u53ea\u662f\u83b7\u53d6\u503c\n$ etcdctl get foo --print-value-only\nbar<\/code><\/pre>\n<p><strong>\u300c4.\u6279\u91cf\u53d6\u503c\u300d<\/strong><\/p>\n<pre><code>$ etcdctl put foo1 bar1\n$ etcdctl put foo3 bar2\n$ etcdctl put foo3 bar3\n\n# \u83b7\u53d6\u4ece foo \u5230 foo3 \u7684\u503c\uff0c\u4e0d\u5305\u62ec foo3\n$ etcdctl get foo foo3 --print-value-only \nbar\nbar1\nbar2\n\n# \u83b7\u53d6\u524d\u7f00\u4e3a foo \u7684\u503c\n$ etcdctl get --prefix foo --print-value-only\nbar\nbar1\nbar2\nbar3\n\n# \u83b7\u53d6\u7b26\u5408\u524d\u7f00\u7684\u524d\u4e24\u4e2a\u503c\n$ etcdctl get --prefix --limit=2 foo --print-value-only\nbar\nbar1<\/code><\/pre>\n<p><strong>\u300c5.\u5220\u9664 key\u300d<\/strong><\/p>\n<pre><code># \u5220\u9664 foo \u7684\u503c\n$ etcdctl del foo\n1\n\n# \u5220\u9664 foo \u5230 foo2 \u4e14\u4e0d\u5305\u62ec foo2 \u7684\u503c\n$ etcdctl del foo foo2\n1\n# \u5220\u9664\u524d\u7f00\u4e3a foo \u7684\u6240\u6709\u503c\n$ etcdctl del --prefix foo\n2<\/code><\/pre>\n<p><strong>\u300c6.\u76d1\u542c\u300d<\/strong><\/p>\n<pre><code># \u76d1\u542c foo \u5355\u4e2a key\n$ etcdctl watch foo\n# \u53e6\u4e00\u4e2a\u63a7\u5236\u53f0\u6267\u884c\uff1aetcdctl put foo bar\nPUT\nfoo\nbar\n\n# \u540c\u65f6\u76d1\u89c6\u591a\u4e2a\u503c\n$ etcdctl watch -i\n$ watch foo\n$ watch zoo\n# \u53e6\u4e00\u4e2a\u63a7\u5236\u53f0\u6267\u884c: etcdctl put foo bar\nPUT\nfoo\nbar\n\n# \u53e6\u4e00\u4e2a\u63a7\u5236\u53f0\u6267\u884c: etcdctl put zoo val\nPUT\nzoo\nval\n\n# \u76d1\u89c6 foo \u524d\u7f00\u547d\u4e2d\u7684 key\n$ etcdctl watch --prefix foo\n# \u53e6\u4e00\u4e2a\u63a7\u5236\u53f0\u6267\u884c\uff1aetcdctl put foo1 bar1\nPUT\nfoo1\nbar1\n# \u53e6\u4e00\u4e2a\u63a7\u5236\u53f0\u6267\u884c\uff1aetcdctl put fooz1 barz1\nPUT\nfooz1\nbarz1<\/code><\/pre>\n<p><strong>\u300c7.\u8bbe\u7f6e\u79df\u7ea6\u300d<\/strong>\u5f53\u4e00\u4e2a key \u88ab\u7ed1\u5b9a\u5230\u4e00\u4e2a\u79df\u7ea6\u4e0a\u65f6\uff0c\u5b83\u7684\u751f\u547d\u5468\u671f\u4e0e\u79df\u7ea6\u7684\u751f\u547d\u5468\u671f\u5373\u7ed1\u5b9a\u3002<\/p>\n<pre><code># \u8bbe\u7f6e10\u79d2\u540e\u8fc7\u671f\u65f6\u95f4\n$ etcdctl lease grant 10\nlease 32698142c52a170a granted with TTL(10s)\n\n# \u628a foo \u548c\u79df\u7ea6\u7ed1\u5b9a\uff0c\u8bbe\u7f6e\u6210 10 \u79d2\u540e\u8fc7\u671f\n$ etcdctl put --lease=32698142c52a170a foo bar\nOK\n$ etcdctl get foo\nfoo\nbar\n\n# 10 \u79d2\u540e\uff0c\u83b7\u53d6\u4e0d\u5230 foo\n$ etcdctl get foo\n# \u8fd4\u56de\u7a7a<\/code><\/pre>\n<p><strong>\u300c8.\u64a4\u9500\u79df\u7ea6\u300d<\/strong>\u901a\u8fc7\u79df\u7ea6 ID \u64a4\u9500\u79df\u7ea6\uff0c\u64a4\u9500\u79df\u7ea6\u5c06\u5220\u9664\u5176\u6240\u6709\u7ed1\u5b9a\u7684 key\u3002<\/p>\n<pre><code>$ etcdctl lease grant 10\nlease 32698142c52a170c granted with TTL(10s)\n$ etcdctl put --lease=32698142c52a170c foo bar\nOK\n\n# \u64a4\u9500\u79df\u7ea6\n$ etcdctl lease revoke 32698142c52a170c\nlease 32698142c52a170c revoked\n\n$ etcdctl get foo\n# \u8fd4\u56de\u7a7a<\/code><\/pre>\n<p><strong>\u300c9.\u7eed\u7ea6\u300d<\/strong>\u901a\u8fc7\u5237\u65b0 TTL \u503c\u6765\u4fdd\u6301\u79df\u7ea6\u7684\u6709\u6548\uff0c\u4f7f\u5176\u4e0d\u4f1a\u8fc7\u671f\u3002<\/p>\n<pre><code># \u8bbe\u7f6e 10 \u79d2\u540e\u8fc7\u671f\u79df\u7ea6\n$ etcdctl lease grant 10\nlease 32698142c52a170f granted with TTL(10s)\n\n# \u628a foo \u548c\u79df\u7ea6\u7ed1\u5b9a\uff0c\u8bbe\u7f6e\u6210 10 \u79d2\u540e\u8fc7\u671f\n$ etcdctl put foo bar --lease=32698142c52a170f\n\n# \u81ea\u52a8\u5b9a\u65f6\u6267\u884c\u7eed\u7ea6\uff0c\u7eed\u7ea6\u6210\u529f\u540e\u6bcf\u6b21\u79df\u7ea6\u4e3a 10 \u79d2\n$ etcdctl lease keep-alive 32698142c52a170f\nlease 32695410dcc0ca06 keepalived with TTL(10)\nlease 32695410dcc0ca06 keepalived with TTL(10)\nlease 32695410dcc0ca06 keepalived with TTL(10)\n...<\/code><\/pre>\n<p><strong>\u300c10.\u67e5\u770b\u79df\u7ea6\u300d<\/strong>\u67e5\u770b\u79df\u7ea6\u4fe1\u606f\uff0c\u4ee5\u4fbf\u7eed\u79df\u6216\u67e5\u770b\u79df\u7ea6\u662f\u5426\u4ecd\u7136\u5b58\u5728\u6216\u5df2\u8fc7\u671f<\/p>\n<pre><code># \u8bbe\u7f6e 50 \u79d2 TTL\n$ etcdctl lease grant 50\nlease 32698142c52a1711 granted with TTL(50s)\n\n# zoo1 \u7ed1\u5b9a 32698142c52a1711 \u79df\u7ea6\n$ etcdctl put --lease=32698142c52a1711 zoo1 val1\nOK\n\n# \u67e5\u770b\u79df\u7ea6\uff0cremaining(32s) \u5269\u4f59\u6709\u6548\u65f6\u95f432\u79d2\uff1b--keys \u83b7\u53d6\u79df\u7ea6\u7ed1\u5b9a\u7684 key\n$ etcdctl lease timetolive --keys 32698142c52a1711\nlease 32698142c52a1711 granted with TTL(50s), remaining(32s), attached keys([zoo1])<\/code><\/pre>\n<p>\u6ce8\uff1a\u4e00\u4e2a\u79df\u7ea6\u652f\u6301\u7ed1\u5b9a\u591a\u4e2a key<\/p>\n<pre><code>$ etcdctl lease grant 50\nlease 32698142c52a1713 granted with TTL(50s)\n\n$ etcdctl put --lease=32698142c52a1713 zoo1 val1\nOK\n\n$ etcdctl put --lease=32698142c52a1713 zoo2 val2\nOK\n\n$ etcdctl put --lease=32698142c52a1713 zoo3 val3\nOK<\/code><\/pre>\n<p>\u79df\u7ea6\u8fc7\u671f\u540e\uff0c\u6240\u6709 key \u503c\u90fd\u4f1a\u88ab\u5220\u9664\uff0c\u56e0\u6b64\uff1a<\/p>\n<ul>\n<li>\u5f53\u79df\u7ea6\u53ea\u7ed1\u5b9a\u4e86\u4e00\u4e2a key \u65f6\uff0c\u60f3\u5220\u9664\u8fd9\u4e2a key\uff0c\u6700\u597d\u7684\u529e\u6cd5\u662f\u64a4\u9500\u5b83\u7684\u79df\u7ea6\uff0c\u800c\u4e0d\u662f\u76f4\u63a5\u5220\u9664\u8fd9\u4e2a key\u3002<\/li>\n<li>\u5f53\u79df\u7ea6\u6ca1\u6709\u7ed1\u5b9akey\u65f6\uff0c\u5e94\u4e3b\u52a8\u628a\u5b83\u64a4\u9500\u6389\uff0c\u5355\u7eaf\u5220\u9664 key \u540e\uff0c\u7eed\u7ea6\u64cd\u4f5c\u6301\u7eed\u8fdb\u884c\uff0c\u4f1a\u9020\u6210\u5185\u5b58\u6cc4\u9732\u3002<\/li>\n<\/ul>\n<pre><code class=\"language-bash\"># \u65b9\u6cd5\u4e00\uff1a\u76f4\u63a5\u5220\u9664`key`\n# \u8bbe\u7f6e\u79df\u7ea6\u5e76\u7ed1\u5b9a zoo1\n$ etcdctl lease grant 50\nlease 32698142c52a1715 granted with TTL(50s)\n$ etcdctl --lease=32698142c52a1715 put zoo1 val1\nOK\n\n# \u7eed\u7ea6\n$ etcdctl lease keep-alive 32698142c52a1715\nlease 32698142c52a1715 keepalived with TTL(50)\n\n# \u53e6\u4e00\u4e2a\u63a7\u5236\u53f0\u6267\u884c\uff1aetcdctl del zoo1\n# \u5355\u7eaf\u5220\u9664 key \u540e\uff0c\u7eed\u7ea6\u64cd\u4f5c\u6301\u7eed\u8fdb\u884c\uff0c\u4f1a\u9020\u6210\u5185\u5b58\u6cc4\u9732\nlease 32698142c52a1715 keepalived with TTL(50)\nlease 32698142c52a1715 keepalived with TTL(50)\nlease 32698142c52a1715 keepalived with TTL(50)\n...\n\n# \u65b9\u6cd5\u4e8c\uff1a\u64a4\u9500`key`\u7684\u79df\u7ea6\n# \u8bbe\u7f6e\u79df\u7ea6\u5e76\u7ed1\u5b9a zoo1\n$ etcdctl lease grant 50\nlease 32698142c52a1717 granted with TTL(50s)\n$ etcdctl --lease=32698142c52a1717 put zoo1 val1\nOK\n\n# \u7eed\u7ea6\n$ etcdctl lease keep-alive 32698142c52a1717\nlease 32698142c52a1717 keepalived with TTL(50)\nlease 32698142c52a1717 keepalived with TTL(50)\n\n# \u53e6\u4e00\u4e2a\u63a7\u5236\u53f0\u6267\u884c\uff1aetcdctl lease revoke 32698142c52a1717\n\n# \u7eed\u7ea6\u64a4\u9500\u5e76\u9000\u51fa\nlease 32698142c52a1717 expired or revoked.\n$ etcdctl get zoo1\n# \u8fd4\u56de\u7a7a<\/code><\/pre>\n<p>\u4ee5\u4e0a\uff0c\u5c31\u662f\u4eca\u5929\u7684\u5168\u90e8\u5185\u5bb9\uff0c\u51e0\u4e4e\u5305\u542b\u4e86 etcd \u5b89\u88c5\u548c\u4f7f\u7528\u7684\u5404\u79cd\u59ff\u52bf.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6982\u8ff0 \u672c\u6b21\u5206\u4eab\u5206\u5e03\u5f0f\u795e\u5668etcd[1]\u7684 5 \u79cd\u90e8\u7f72\u65b9\u5f0f\u548c 10 \u79cd\u4f7f\u7528\u59ff\u52bf\u3002 \u5728\u5b66\u4e60 etcd \u4e4b\u524d\uff0c\u6211\u4eec\u5148\u6765\u804a\u4e00\u804a etcd \u540d\u5b57\u7684   \u2026 &#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0},"categories":[291],"tags":[],"_links":{"self":[{"href":"\/index.php?rest_route=\/wp\/v2\/posts\/9510"}],"collection":[{"href":"\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=9510"}],"version-history":[{"count":1,"href":"\/index.php?rest_route=\/wp\/v2\/posts\/9510\/revisions"}],"predecessor-version":[{"id":9511,"href":"\/index.php?rest_route=\/wp\/v2\/posts\/9510\/revisions\/9511"}],"wp:attachment":[{"href":"\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=9510"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=9510"},{"taxonomy":"post_tag","embeddable":true,"href":"\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=9510"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}