Genau 9 Minuten nach dem Start der App erhalten wir Folgendes in unseren Spring Boot-Anwendungsprotokollen:
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org.apache.kafka.clients.NetworkClient [] => [Consumer clientId=consumer-xx, groupId=xx] Node -1 disconnected.
Das Seltsame ist, obwohl wir die Fehlermeldung erhalten, dass der Verbraucher die Verbindung getrennt hat Nach 9 Minuten erhält der Hörer immer noch Nachrichten. Wenn der Verbraucher stillschweigend die Verbindung wiederherstellt, würden wir erwarten, dass 9 Minuten nach der letzten Nachricht eine weitere Trennungsmeldung angezeigt wird, was jedoch nicht der Fall ist. Dieses Verhalten erscheint nicht logisch.
Unsere Konfiguration sieht so aus:
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kafka:
ssl:
key-password: xxx
keystore-location: ${KEYSTORE_LOCATION:xxx.keystore.jks}
keystore-password: xxx
truststore-location: ${TRUSTORE_LOCATION:file:xxx.truststore.jks}
truststore-password: xxx
consumer:
bootstrap-servers: ${KAFKA_ENDPOINT:xxx.com:9092}
group-id: ${KAFKA_GROUP:xxx}
value-deserializer: org.apache.kafka.common.serialization.StringDeserializer
properties:
session.timeout.ms: ${KAFKA_SESSION_TIMEOUT:10000}
security.protocol: SSL
security.inter.broker.protocol: SSL
sasl.mechanism: https
Mir ist aufgefallen, dass wir beim Starten der App Folgendes in den Protokollen erhalten:
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2025-01-13T11:49:59,842Z INFO restartedMain kafka.clients.consumer.ConsumerConfig [] => ConsumerConfig values:
allow.auto.create.topics = true
auto.commit.interval.ms = 5000
auto.offset.reset = latest
bootstrap.servers = [xxx.com:9092]
check.crcs = true
client.dns.lookup = use_all_dns_ips
client.id = consumer-xxx-1
client.rack =
connections.max.idle.ms = 540000
default.api.timeout.ms = 60000
enable.auto.commit = false
exclude.internal.topics = true
fetch.max.bytes = 52428800
fetch.max.wait.ms = 500
fetch.min.bytes = 1
group.id = xxx
group.instance.id = null
heartbeat.interval.ms = 3000
interceptor.classes = []
internal.leave.group.on.close = true
internal.throw.on.fetch.stable.offset.unsupported = false
isolation.level = read_uncommitted
key.deserializer = class org.apache.kafka.common.serialization.StringDeserializer
max.partition.fetch.bytes = 1048576
max.poll.interval.ms = 300000
max.poll.records = 500
metadata.max.age.ms = 300000
metric.reporters = []
metrics.num.samples = 2
metrics.recording.level = INFO
metrics.sample.window.ms = 30000
partition.assignment.strategy = [class org.apache.kafka.clients.consumer.RangeAssignor, class org.apache.kafka.clients.consumer.CooperativeStickyAssignor]
receive.buffer.bytes = 65536
reconnect.backoff.max.ms = 1000
reconnect.backoff.ms = 50
request.timeout.ms = 30000
retry.backoff.ms = 100
sasl.client.callback.handler.class = null
sasl.jaas.config = null
sasl.kerberos.kinit.cmd = /usr/bin/kinit
sasl.kerberos.min.time.before.relogin = 60000
sasl.kerberos.service.name = null
sasl.kerberos.ticket.renew.jitter = 0.05
sasl.kerberos.ticket.renew.window.factor = 0.8
sasl.login.callback.handler.class = null
sasl.login.class = null
sasl.login.connect.timeout.ms = null
sasl.login.read.timeout.ms = null
sasl.login.refresh.buffer.seconds = 300
sasl.login.refresh.min.period.seconds = 60
sasl.login.refresh.window.factor = 0.8
sasl.login.refresh.window.jitter = 0.05
sasl.login.retry.backoff.max.ms = 10000
sasl.login.retry.backoff.ms = 100
sasl.mechanism = https
sasl.oauthbearer.clock.skew.seconds = 30
sasl.oauthbearer.expected.audience = null
sasl.oauthbearer.expected.issuer = null
sasl.oauthbearer.jwks.endpoint.refresh.ms = 3600000
sasl.oauthbearer.jwks.endpoint.retry.backoff.max.ms = 10000
sasl.oauthbearer.jwks.endpoint.retry.backoff.ms = 100
sasl.oauthbearer.jwks.endpoint.url = null
sasl.oauthbearer.scope.claim.name = scope
sasl.oauthbearer.sub.claim.name = sub
sasl.oauthbearer.token.endpoint.url = null
security.protocol = SSL
security.providers = null
send.buffer.bytes = 131072
session.timeout.ms = 10000
socket.connection.setup.timeout.max.ms = 30000
socket.connection.setup.timeout.ms = 10000
ssl.cipher.suites = null
ssl.enabled.protocols = [TLSv1.2]
ssl.endpoint.identification.algorithm = https
ssl.engine.factory.class = null
ssl.key.password = [hidden]
ssl.keymanager.algorithm = SunX509
ssl.keystore.certificate.chain = null
ssl.keystore.key = null
ssl.keystore.location = xxxkeystore.jks
ssl.keystore.password = [hidden]
ssl.keystore.type = JKS
ssl.protocol = TLSv1.2
ssl.provider = null
ssl.secure.random.implementation = null
ssl.trustmanager.algorithm = PKIX
ssl.truststore.certificates = null
ssl.truststore.location = xxxtruststore.jks
ssl.truststore.password = [hidden]
ssl.truststore.type = JKS
value.deserializer = class org.apache.kafka.common.serialization.StringDeserializer