我正在尝试使用 jaas 配置通过 SASL_SSL 协议连接到 kafka 集群，如下所示：
spring:
cloud:
stream:
bindings:
binding-1:
binder: kafka-1-with-ssl
destination: <destination-1>
content-type: text/plain
group: <group-id-1>
consumer:
header-mode: headers
binding-2:
binder: kafka-2-with-ssl
destination: <destination-2>
content-type: text/plain
group: <group-id-2>
consumer:
header-mode: headers
binders:
kafka-1-with-ssl:
type: kafka
defaultCandidate: false
environment:
spring:
cloud:
stream:
kafka:
binder:
brokers: <broker-hostnames-1>
configuration:
ssl:
truststore:
location: <location-1>
password: <ts-password-1>
type: JKS
jaas:
loginModule: org.apache.kafka.common.security.scram.ScramLoginModule
options:
username: <username-1>
password: <password-1>
kafka-2-with-ssl:
type: kafka
defaultCandidate: false
environment:
spring:
cloud:
stream:
kafka:
binder:
brokers: <broker-hostnames-2>
configuration:
ssl:
truststore:
location: <location-2>
password: <ts-password-2>
type: JKS
jaas:
loginModule: org.apache.kafka.common.security.scram.ScramLoginModule
options:
username: <username-2>
password: <password-2>
kafka:
binder:
configuration:
security:
protocol: SASL_SSL
sasl:
mechanism: SCRAM-SHA-256
上述配置与spring-cloud-stream 的官方 git repo上可用的示例配置内联。
该库的 git repo 上提出的类似问题说它已在最新版本中修复，但似乎并非如此。收到以下错误：
springBootVersion：2.2.8 和 spring-cloud-stream-dependencies 版本 - Horsham.SR6。
Failed to create consumer binding; retrying in 30 seconds | org.springframework.cloud.stream.binder.BinderException: Exception thrown while starting consumer:
at org.springframework.cloud.stream.binder.AbstractMessageChannelBinder.doBindConsumer(AbstractMessageChannelBinder.java:461)
at org.springframework.cloud.stream.binder.AbstractMessageChannelBinder.doBindConsumer(AbstractMessageChannelBinder.java:90)
at org.springframework.cloud.stream.binder.AbstractBinder.bindConsumer(AbstractBinder.java:143)
at org.springframework.cloud.stream.binding.BindingService.lambda$rescheduleConsumerBinding$1(BindingService.java:201)
at org.springframework.cloud.sleuth.instrument.async.TraceRunnable.run(TraceRunnable.java:68)
at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.apache.kafka.common.KafkaException: Failed to create new KafkaAdminClient
at org.apache.kafka.clients.admin.KafkaAdminClient.createInternal(KafkaAdminClient.java:407)
at org.apache.kafka.clients.admin.AdminClient.create(AdminClient.java:65)
at org.springframework.cloud.stream.binder.kafka.provisioning.KafkaTopicProvisioner.createAdminClient(KafkaTopicProvisioner.java:246)
at org.springframework.cloud.stream.binder.kafka.provisioning.KafkaTopicProvisioner.doProvisionConsumerDestination(KafkaTopicProvisioner.java:216)
at org.springframework.cloud.stream.binder.kafka.provisioning.KafkaTopicProvisioner.provisionConsumerDestination(KafkaTopicProvisioner.java:183)
at org.springframework.cloud.stream.binder.kafka.provisioning.KafkaTopicProvisioner.provisionConsumerDestination(KafkaTopicProvisioner.java:79)
at org.springframework.cloud.stream.binder.AbstractMessageChannelBinder.doBindConsumer(AbstractMessageChannelBinder.java:402)
... 12 common frames omitted
Caused by: org.apache.kafka.common.KafkaException: javax.security.auth.login.LoginException: KrbException: Cannot locate default realm
at org.apache.kafka.common.network.SaslChannelBuilder.configure(SaslChannelBuilder.java:160)
at org.apache.kafka.common.network.ChannelBuilders.create(ChannelBuilders.java:146)
at org.apache.kafka.common.network.ChannelBuilders.clientChannelBuilder(ChannelBuilders.java:67)
at org.apache.kafka.clients.ClientUtils.createChannelBuilder(ClientUtils.java:99)
at org.apache.kafka.clients.admin.KafkaAdminClient.createInternal(KafkaAdminClient.java:382)
... 18 common frames omitted
Caused by: javax.security.auth.login.LoginException: KrbException: Cannot locate default realm
at com.sun.security.auth.module.Krb5LoginModule.attemptAuthentication(Krb5LoginModule.java:804)
at com.sun.security.auth.module.Krb5LoginModule.login(Krb5LoginModule.java:617)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at javax.security.auth.login.LoginContext.invoke(LoginContext.java:755)
at javax.security.auth.login.LoginContext.access$000(LoginContext.java:195)
at javax.security.auth.login.LoginContext$4.run(LoginContext.java:682)
at javax.security.auth.login.LoginContext$4.run(LoginContext.java:680)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.login.LoginContext.invokePriv(LoginContext.java:680)
at javax.security.auth.login.LoginContext.login(LoginContext.java:587)
at org.apache.kafka.common.security.authenticator.AbstractLogin.login(AbstractLogin.java:60)
at org.apache.kafka.common.security.authenticator.LoginManager.<init>(LoginManager.java:61)
at org.apache.kafka.common.security.authenticator.LoginManager.acquireLoginManager(LoginManager.java:111)
at org.apache.kafka.common.network.SaslChannelBuilder.configure(SaslChannelBuilder.java:149)
... 22 common frames omitted
Caused by: sun.security.krb5.RealmException: KrbException: Cannot locate default realm
at sun.security.krb5.Realm.getDefault(Realm.java:68)
at sun.security.krb5.PrincipalName.<init>(PrincipalName.java:462)
at sun.security.krb5.PrincipalName.<init>(PrincipalName.java:471)
at com.sun.security.auth.module.Krb5LoginModule.attemptAuthentication(Krb5LoginModule.java:706)
... 38 common frames omitted
Caused by: sun.security.krb5.KrbException: Cannot locate default realm
at sun.security.krb5.Config.getDefaultRealm(Config.java:1029)
at sun.security.krb5.Realm.getDefault(Realm.java:64)
... 41 common frames omitted
这让我认为该库没有正确获取配置道具，因为它jaas.loginModule被指定为ScramLoginModule但它Krb5LoginModule用于进行身份验证。
但是，令人惊讶的是，当配置如下完成时（区别在于最后一部分在 binder 的环境之外使用 ssl 凭据），它会连接到全局 ssl props 中指定的 binder（在 binder 的 env 之外）并默默地忽略另一个活页夹而不显示任何错误日志。
假设如果kafka-2-with-ssl在全局 ssl props 中指定了 binder 的密码凭据，则会创建该 binder，并且订阅该 binder 的 bindings 开始使用 events。但这仅在我们需要创建单个活页夹时才有用。
spring:
cloud:
stream:
bindings:
binding-1:
binder: kafka-1-with-ssl
destination: <destination-1>
content-type: text/plain
group: <group-id-1>
consumer:
header-mode: headers
binding-2:
binder: kafka-2-with-ssl
destination: <destination-2>
content-type: text/plain
group: <group-id-2>
consumer:
header-mode: headers
binders:
kafka-1-with-ssl:
type: kafka
defaultCandidate: false
environment:
spring:
cloud:
stream:
kafka:
binder:
brokers: <broker-hostnames-1>
configuration:
ssl:
truststore:
location: <location-1>
password: <ts-password-1>
type: JKS
jaas:
loginModule: org.apache.kafka.common.security.scram.ScramLoginModule
options:
username: <username-1>
password: <password-1>
kafka-2-with-ssl:
type: kafka
defaultCandidate: false
environment:
spring:
cloud:
stream:
kafka:
binder:
brokers: <broker-hostnames-2>
configuration:
ssl:
truststore:
location: <location-2>
password: <ts-password-2>
type: JKS
jaas:
loginModule: org.apache.kafka.common.security.scram.ScramLoginModule
options:
username: <username-2>
password: <password-2>
kafka:
binder:
configuration:
security:
protocol: SASL_SSL
sasl:
mechanism: SCRAM-SHA-256
ssl:
truststore:
location: <location-2>
password: <ts-password-2>
type: JKS
jaas:
loginModule: org.apache.kafka.common.security.scram.ScramLoginModule
options:
username: <username-2>
password: <password-2>
向您保证 ssl 凭据没有任何问题。使用成功单独创建的 ssl-kafka-binder 进行了努力测试。目的是使用 SASL_SSL 协议连接到多个 kafka binder。提前致谢。