java通过证书访问etcd的实现步骤
作者：amadeus_liu2
Etcd提供了多种语言的客户端库,本文主要介绍了java通过证书访问etcd的实现步骤,文中通过示例代码介绍的非常详细,对大家的学习或者工作具有一定的参考学习价值,需要的朋友们下面随着小编来一起学习学习吧
一、首先，要使用cfssl生成etcd证书相关的文件(ca.pem server.pem server-key.pem ),然后把server-key.pem进行转换：
openssl pkcs8 -topk8 -nocrypt -in server-key.pem -out server.key
二、带证书启动etcd
./etcd --name infra0 --cert-file=/root/server.pem --key-file=/root/server-key.pem --advertise-client-urls=https://0.0.0.0:2379 --listen-client-urls=https://0.0.0.0:2379
可通过etcdctl 进行连接验证
./etcdctl --cacert=/root/ca.pem --cert=/root/server.pem --key=/root/server-key.pem --endpoints="https://10.180.23.10:2379" get Elon
三、在java项目中添加相关依赖，完整依赖类似如下：
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.example</groupId>
<artifactId>springbootetcd3</artifactId>
<version>1.0-SNAPSHOT</version>
<properties>
<maven.compiler.source>8</maven.compiler.source>
<maven.compiler.target>8</maven.compiler.target>
</properties>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.6.6</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<dependencies>
<dependency>
<groupId>io.etcd</groupId>
<artifactId>jetcd-core</artifactId>
<version>0.7.7</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.coreos/jetcd-core -->
<!-- <dependency>
<groupId>com.coreos</groupId>
<artifactId>jetcd-core</artifactId>
<version>0.0.2</version>
</dependency>-->
<!-- <dependency>
<groupId>io.etcd</groupId>
<artifactId>jetcd-core</artifactId>
<version>0.5.0</version>
</dependency>-->
<!-- <dependency>
<groupId>io.grpc</groupId>
<artifactId>grpc-netty-shaded</artifactId>
<version>1.50.0</version>
</dependency>-->
<!-- https://mvnrepository.com/artifact/io.netty/netty-all -->
<dependency>
<groupId>io.netty</groupId>
<artifactId>netty-all</artifactId>
<version>4.1.90.Final</version>
</dependency>
<!-- https://mvnrepository.com/artifact/io.netty/netty-tcnative -->
<dependency>
<groupId>io.netty</groupId>
<artifactId>netty-tcnative</artifactId>
<version>2.0.65.Final</version>
</dependency>
<!-- https://mvnrepository.com/artifact/io.netty/netty-tcnative-boringssl-static -->
<dependency>
<groupId>io.netty</groupId>
<artifactId>netty-tcnative-boringssl-static</artifactId>
<version>2.0.65.Final</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
</dependencies>
</project>
四、创建客户端，访问etcd
package cn.edu.tju;
import io.etcd.jetcd.ByteSequence;
import io.etcd.jetcd.Client;
import io.etcd.jetcd.KV;
import io.etcd.jetcd.api.PutResponse;
import io.grpc.netty.GrpcSslContexts;
import io.netty.handler.ssl.SslContext;
import java.io.File;
import java.io.IOException;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;
public class EtcdExample {
public static void main(String[] args) throws IOException, ExecutionException, InterruptedException {
File cert = new File("d:\\ca.pem");
File keyCertChainFile = new File("d:\\server.pem");
File keyFile = new File("d:\\server.key");
SslContext context = GrpcSslContexts.forClient()
.trustManager(cert)
.keyManager(keyCertChainFile, keyFile)
.build();
Client client = Client.builder()
.endpoints("https://xx.xx.xx.xx:2379")
.sslContext(context)
.build();
ByteSequence key = ByteSequence.from("Elon".getBytes());
ByteSequence value = ByteSequence.from("Musk".getBytes());
// put the key-value
client.getKVClient().put(key,value).get();
System.out.println("ok");
}
}到此这篇关于java通过证书访问etcd的实现步骤的文章就介绍到这了,更多相关java 证书访问etcd内容请搜索脚本之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持脚本之家！