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PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target

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程序员子悠@ziyou
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#1 · 2024年4月15日, 下午10:21

PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target

2024-04-13 20:55:39.368 [pool-3-thread-1] ERROR c.a.otter.canal.adapter.launcher.loader.AdapterProcessor - ElasticsearchException[java.util.concurrent.ExecutionException: javax.net.ssl.SSLHandshakeException: General SSLEngine problem]; nested: ExecutionException[javax.net.ssl.SSLHandshakeException: General SSLEngine problem]; nested: SSLHandshakeException[General SSLEngine problem]; nested: SSLHandshakeException[General SSLEngine problem]; nested: ValidatorException[PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target]; nested: SunCertPathBuilderException[unable to find valid certification path to requested target];
java.lang.RuntimeException: ElasticsearchException[java.util.concurrent.ExecutionException: javax.net.ssl.SSLHandshakeException: General SSLEngine problem]; nested: ExecutionException[javax.net.ssl.SSLHandshakeException: General SSLEngine problem]; nested: SSLHandshakeException[General SSLEngine problem]; nested: SSLHandshakeException[General SSLEngine problem]; nested: ValidatorException[PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target]; nested: SunCertPathBuilderException[unable to find valid certification path to requested target];
 at com.alibaba.otter.canal.client.adapter.es.core.service.ESSyncService.sync(ESSyncService.java:112)
 at com.alibaba.otter.canal.client.adapter.es.core.service.ESSyncService.sync(ESSyncService.java:60)
 at com.alibaba.otter.canal.client.adapter.es.core.ESAdapter.sync(ESAdapter.java:104)
 at com.alibaba.otter.canal.client.adapter.es.core.ESAdapter.sync(ESAdapter.java:83)
 at com.alibaba.otter.canal.client.adapter.ProxyOuterAdapter.sync(ProxyOuterAdapter.java:42)
 at com.alibaba.otter.canal.adapter.launcher.loader.AdapterProcessor.batchSync(AdapterProcessor.java:139)
 at com.alibaba.otter.canal.adapter.launcher.loader.AdapterProcessor.lambda$null$1(AdapterProcessor.java:97)
 at java.util.concurrent.CopyOnWriteArrayList.forEach(CopyOnWriteArrayList.java:890)
 at com.alibaba.otter.canal.adapter.launcher.loader.AdapterProcessor.lambda$null$2(AdapterProcessor.java:94)
 at java.util.concurrent.FutureTask.run(FutureTask.java:266)
 at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
 at java.lang.Thread.run(Thread.java:745)
Caused by: org.elasticsearch.ElasticsearchException: java.util.concurrent.ExecutionException: javax.net.ssl.SSLHandshakeException: General SSLEngine problem
 at org.elasticsearch.client.RestHighLevelClient.performClientRequest(RestHighLevelClient.java:2695)
 at org.elasticsearch.client.RestHighLevelClient.internalPerformRequest(RestHighLevelClient.java:2171)
 at org.elasticsearch.client.RestHighLevelClient.performRequest(RestHighLevelClient.java:2154)
 at org.elasticsearch.client.RestHighLevelClient.performRequestAndParseEntity(RestHighLevelClient.java:2118)
 at org.elasticsearch.client.IndicesClient.getMapping(IndicesClient.java:538)
 at com.alibaba.otter.canal.client.adapter.es8x.support.ESConnection.getMapping(ESConnection.java:132)
 at com.alibaba.otter.canal.client.adapter.es8x.support.ES8xTemplate.getEsType(ES8xTemplate.java:392)
 at com.alibaba.otter.canal.client.adapter.es8x.support.ES8xTemplate.getValFromData(ES8xTemplate.java:269)
 at com.alibaba.otter.canal.client.adapter.es8x.support.ES8xTemplate.getESDataFromDmlData(ES8xTemplate.java:324)
 at com.alibaba.otter.canal.client.adapter.es.core.service.ESSyncService.singleTableSimpleFiledUpdate(ESSyncService.java:814)
 at com.alibaba.otter.canal.client.adapter.es.core.service.ESSyncService.update(ESSyncService.java:208)
 at com.alibaba.otter.canal.client.adapter.es.core.service.ESSyncService.sync(ESSyncService.java:97)
 ... 12 common frames omitted
Caused by: java.util.concurrent.ExecutionException: javax.net.ssl.SSLHandshakeException: General SSLEngine problem
 at org.elasticsearch.common.util.concurrent.BaseFuture$Sync.getValue(BaseFuture.java:257)
 at org.elasticsearch.common.util.concurrent.BaseFuture$Sync.get(BaseFuture.java:244)
 at org.elasticsearch.common.util.concurrent.BaseFuture.get(BaseFuture.java:75)
 at org.elasticsearch.client.RestHighLevelClient.performClientRequest(RestHighLevelClient.java:2692)
 ... 23 common frames omitted
Caused by: javax.net.ssl.SSLHandshakeException: General SSLEngine problem
 at sun.security.ssl.Handshaker.checkThrown(Handshaker.java:1431)
 at sun.security.ssl.SSLEngineImpl.checkTaskThrown(SSLEngineImpl.java:535)
 at sun.security.ssl.SSLEngineImpl.writeAppRecord(SSLEngineImpl.java:1214)
 at sun.security.ssl.SSLEngineImpl.wrap(SSLEngineImpl.java:1186)
 at javax.net.ssl.SSLEngine.wrap(SSLEngine.java:469)
 at org.apache.http.nio.reactor.ssl.SSLIOSession.doWrap(SSLIOSession.java:270)
 at org.apache.http.nio.reactor.ssl.SSLIOSession.doHandshake(SSLIOSession.java:316)
 at org.apache.http.nio.reactor.ssl.SSLIOSession.isAppInputReady(SSLIOSession.java:537)
 at org.apache.http.impl.nio.reactor.AbstractIODispatch.inputReady(AbstractIODispatch.java:120)
 at org.apache.http.impl.nio.reactor.BaseIOReactor.readable(BaseIOReactor.java:162)
 at org.apache.http.impl.nio.reactor.AbstractIOReactor.processEvent(AbstractIOReactor.java:337)
 at org.apache.http.impl.nio.reactor.AbstractIOReactor.processEvents(AbstractIOReactor.java:315)
 at org.apache.http.impl.nio.reactor.AbstractIOReactor.execute(AbstractIOReactor.java:276)
 at org.apache.http.impl.nio.reactor.BaseIOReactor.execute(BaseIOReactor.java:104)
 at org.apache.http.impl.nio.reactor.AbstractMultiworkerIOReactor$Worker.run(AbstractMultiworkerIOReactor.java:591)
 ... 1 common frames omitted
Caused by: javax.net.ssl.SSLHandshakeException: General SSLEngine problem
 at sun.security.ssl.Alerts.getSSLException(Alerts.java:192)
 at sun.security.ssl.SSLEngineImpl.fatal(SSLEngineImpl.java:1728)
 at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:304)
 at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:296)
 at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1509)
 at sun.security.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:216)
 at sun.security.ssl.Handshaker.processLoop(Handshaker.java:979)
 at sun.security.ssl.Handshaker$1.run(Handshaker.java:919)
 at sun.security.ssl.Handshaker$1.run(Handshaker.java:916)
 at java.security.AccessController.doPrivileged(Native Method)
 at sun.security.ssl.Handshaker$DelegatedTask.run(Handshaker.java:1369)
 at org.apache.http.nio.reactor.ssl.SSLIOSession.doRunTask(SSLIOSession.java:288)
 at org.apache.http.nio.reactor.ssl.SSLIOSession.doHandshake(SSLIOSession.java:356)
 ... 9 common frames omitted
Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
 at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:387)
 at sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.java:292)
 at sun.security.validator.Validator.validate(Validator.java:260)
 at sun.security.ssl.X509TrustManagerImpl.validate(X509TrustManagerImpl.java:324)
 at sun.security.ssl.X509TrustManagerImpl.checkTrusted(X509TrustManagerImpl.java:281)
 at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:136)
 at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1496)
 ... 17 common frames omitted
Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
 at sun.security.provider.certpath.SunCertPathBuilder.build(SunCertPathBuilder.java:141)
 at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(SunCertPathBuilder.java:126)
 at java.security.cert.CertPathBuilder.build(CertPathBuilder.java:280)
 at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:382)
 ... 23 common frames omitted
2024-04-13 20:55:39.370 [Thread-4] ERROR c.a.otter.canal.adapter.launcher.loader.AdapterProcessor - Outer adapter sync failed!  Error sync and rollback, execute times: 13

启动了 canal 适配器过后，在进行 MySQL 数据同步到 ES8 的时候，出现上面的错误，这个错误的原因是因为 ES8 默认开启了安全认证，并且自带了签名证书。Canal Adapter 在适配 ES8 的时候并没有支持这个功能，因此报错了。

解决方案

解决方案有两个：

  1. 部署搭建 ES 集群的时候，关闭这个安全证书的功能，对应 es 的配置是在 elasticsearch.yml 里面的 xpack.security.enabled 为 false，docker 部署的 es 需要进入的容器里面去进行修改，或者在容器启动的时候就配置。
  2. 修改 canal adapter 的源码，兼容证书；

这里主要讲一下方案 2，因为对于方案 1 需要取消 ES8 的安全功能，不推荐。

修改源码，兼容 ES8 安全配置

拷贝证书

在使用 docker 安装和部署 ES8 的时候，默认已经创建好了一个证书，我们需要将证书从容器中拷贝出来，命令如下

docker cp es01:/usr/share/elasticsearch/config/certs/http_ca.crt .

这里的 es01 是容器名称，根据自己的进行替换即可，拷贝出来的路径可以自行替换，记住在哪就行，后面会用到。

修改代码

在 canal adapter 的源码中，找到下面这类，com.alibaba.otter.canal.client.adapter.es8x.support.ESConnection#ESConnection

20240415-38
img

将其中的构造方法改成下面这段

public ESConnection(String[] hosts, Map<String, String> properties) throws UnknownHostException {
    String caPath = properties.get("security.ca.path");
    if (StringUtils.isNotEmpty(caPath)) {
        connectEsWithCa(hosts, properties, caPath);
    } else {
        connectEsWithoutCa(hosts, properties);
    }
}
private void connectEsWithCa(String[] hosts, Map<String, String> properties, String caPath) {
    Path caCertificatePath = Paths.get(caPath);
    try (InputStream is = Files.newInputStream(caCertificatePath)) {
        CertificateFactory factory = CertificateFactory.getInstance("X.509");
        Certificate trustedCa = factory.generateCertificate(is);
        KeyStore trustStore = KeyStore.getInstance("pkcs12");
        trustStore.load(null, null);
        trustStore.setCertificateEntry("ca", trustedCa);
        SSLContextBuilder sslContextBuilder = SSLContexts.custom()
        .loadTrustMaterial(trustStore, null);
        final SSLContext sslContext = sslContextBuilder.build();

        HttpHost[] httpHosts = Arrays.stream(hosts).map(this::createHttpHost).toArray(HttpHost[]::new);
        RestClientBuilder restClientBuilder = RestClient.builder(httpHosts);
        String nameAndPwd = properties.get("security.auth");
        if (StringUtils.isNotEmpty(nameAndPwd) && nameAndPwd.contains(":")) {
            String[] nameAndPwdArr = nameAndPwd.split(":");
            final CredentialsProvider credentialsProvider = new BasicCredentialsProvider();
            credentialsProvider.setCredentials(AuthScope.ANY,
                                               new UsernamePasswordCredentials(nameAndPwdArr[0], nameAndPwdArr[1]));
            restClientBuilder.setHttpClientConfigCallback(httpClientBuilder -> {
                httpClientBuilder.setDefaultCredentialsProvider(credentialsProvider);
                return httpClientBuilder.setSSLContext(sslContext);
                });
            }
            restHighLevelClient = new RestHighLevelClientBuilder(restClientBuilder.build()).setApiCompatibilityMode(true).build();
        } catch (Exception e) {
            throw new RuntimeException(e);
    }
}

private void connectEsWithoutCa(String[] hosts, Map<String, String> properties) {
    HttpHost[] httpHosts = Arrays.stream(hosts).map(this::createHttpHost).toArray(HttpHost[]::new);
    RestClientBuilder restClientBuilder = RestClient.builder(httpHosts);
    String nameAndPwd = properties.get("security.auth");
    if (StringUtils.isNotEmpty(nameAndPwd) && nameAndPwd.contains(":")) {
        String[] nameAndPwdArr = nameAndPwd.split(":");
        final CredentialsProvider credentialsProvider = new BasicCredentialsProvider();
        credentialsProvider.setCredentials(AuthScope.ANY,
                new UsernamePasswordCredentials(nameAndPwdArr[0], nameAndPwdArr[1]));
        restClientBuilder.setHttpClientConfigCallback(
                httpClientBuilder -> httpClientBuilder.setDefaultCredentialsProvider(credentialsProvider));
    }
    restHighLevelClient = new RestHighLevelClientBuilder(restClientBuilder.build()).setApiCompatibilityMode(true)
            .build();
}

简单说明

  1. 其中 connectEsWithoutCa 方法为原来的构造方法的实现；
  2. connectEsWithCa 方法为兼容了安全认证的方法构造方法实现；
  3. 这两个方法的使用根据是否配置了 security.ca.path 属性来判断；
  4. 而 security.ca.path 这个配置是在启动器的 outerAdapters 的 es8 的 properties 下，与 security.auth 同级；

重新打包

修改好了代码过后，通过 maven 重新打包，打包出对应的 es8 的 jar 包即可。

20240415-39
img

将编译打包后的 jar 重新复制到 canal 适配器的 plugin 目录下面，并且修改一下对应的名称跟下载下来的版本一致即可，比如我这边之前下载的 1.1.7 版本。

20240415-40
img

其中 client-adapter.es8x-1.1.7-jar-with-dependencies.jar.7 是原来下载下来携带的 jar，client-adapter.es8x-1.1.7-jar-with-dependencies.jar 是我重新打包编译后的 jar。

修改启动器的配置

前面讲到兼容代码的时候，我们使用了一个叫 security.ca.path 的配置，所以我们需要将前面拷贝的 ca 证书路径，配置在这个属性上，即 security.ca.path: /Users/silence/Downloads/canal/http_ca.crt

完整的配置如下所示

server:
  port: 8081
spring:
  jackson:
    date-format: yyyy-MM-dd HH:mm:ss
    time-zone: GMT+8
    default-property-inclusion: non_null

canal.conf:
  mode: tcp #tcp kafka rocketMQ rabbitMQ
  flatMessage: true
  zookeeperHosts:
  syncBatchSize: 1000
  retries: -1
  timeout:
  accessKey:
  secretKey:
  consumerProperties:
    # canal tcp consumer
    canal.tcp.server.host: 127.0.0.1:11111
    canal.tcp.zookeeper.hosts:
    canal.tcp.batch.size: 500
    canal.tcp.username:
    canal.tcp.password:
    # kafka consumer
    # kafka.bootstrap.servers: 127.0.0.1:9092
    # kafka.enable.auto.commit: false
    # kafka.auto.commit.interval.ms: 1000
    # kafka.auto.offset.reset: latest
    # kafka.request.timeout.ms: 40000
    # kafka.session.timeout.ms: 30000
    # kafka.isolation.level: read_committed
    # kafka.max.poll.records: 1000
    # rocketMQ consumer
    # rocketmq.namespace:
    # rocketmq.namesrv.addr: 127.0.0.1:9876
    # rocketmq.batch.size: 1000
    # rocketmq.enable.message.trace: false
    # rocketmq.customized.trace.topic:
    # rocketmq.access.channel:
    # rocketmq.subscribe.filter:
    # rabbitMQ consumer
    # rabbitmq.host:
    # rabbitmq.virtual.host:
    # rabbitmq.username:
    # rabbitmq.password:
    # rabbitmq.resource.ownerId:

  srcDataSources:
    defaultDS:
      url: jdbc:mysql://127.0.0.1:3306/ry-vue?useUnicode=true
      username: root
      password: 123456
  canalAdapters:
  - instance: example # canal instance Name or mq topic name
    groups:
    - groupId: g1
      outerAdapters:
        - name: es8
          key: es-key
          hosts: https://127.0.0.1:9200 # 127.0.0.1:9200 for rest mode
          properties:
            mode: rest # transport or rest
            security.auth: elastic:oQuOvvZWZ_Yl*MP4Qdx+
            security.ca.path: /Users/silence/Downloads/canal/http_ca.crt
            cluster.name: docker-cluster
        - name: logger
#      - name: rdb
#        key: mysql1
#        properties:
#          jdbc.driverClassName: com.mysql.jdbc.Driver
#          jdbc.url: jdbc:mysql://127.0.0.1:3306/mytest2?useUnicode=true
#          jdbc.username: root
#          jdbc.password: 121212
#          druid.stat.enable: false
#          druid.stat.slowSqlMillis: 1000
#      - name: rdb
#        key: oracle1
#        properties:
#          jdbc.driverClassName: oracle.jdbc.OracleDriver
#          jdbc.url: jdbc:oracle:thin:@localhost:49161:XE
#          jdbc.username: mytest
#          jdbc.password: m121212
#      - name: rdb
#        key: postgres1
#        properties:
#          jdbc.driverClassName: org.postgresql.Driver
#          jdbc.url: jdbc:postgresql://localhost:5432/postgres
#          jdbc.username: postgres
#          jdbc.password: 121212
#          threads: 1
#          commitSize: 3000
#      - name: hbase
#        properties:
#          hbase.zookeeper.quorum: 127.0.0.1
#          hbase.zookeeper.property.clientPort: 2181
#          zookeeper.znode.parent: /hbase

#      - name: kudu
#        key: kudu
#        properties:
#          kudu.master.address: 127.0.0.1 # ',' split multi address
#      - name: phoenix
#        key: phoenix
#        properties:
#          jdbc.driverClassName: org.apache.phoenix.jdbc.PhoenixDriver
#          jdbc.url: jdbc:phoenix:127.0.0.1:2181:/hbase/db
#          jdbc.username:
#          jdbc.password:
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Last edited on 2024年4月15日, 下午10:24 by 程序员子悠

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