confluent kafka broker configuration

Each listener name should only appear once in the map. Operating system. When the available disk space is below the threshold value, the broker auto disables the effect oflog.deletion.max.segments.per.run and deletes all eligible segments during periodic retention. Listener-level limits may also be configured by prefixing the config name with the listener prefix, for example, listener.name.internal.max.connections. Frequency at which to check for stale offsets. This is used by the broker to find the preferred read replica. If the value is 0, no-op records are not appended to the metadata partition. The maximum number of consumers that a single consumer group can accommodate. If disabled those topics will not be compacted and continually grow in size. A comma-separated list of the names of the listeners used by the controller. The generated CA is a public-private key pair and certificate used to sign other certificates. The value is specified in percentage. In the latest message format version, records are always grouped into batches for efficiency. The maximum amount of time the client will wait for the socket connection to be established. This prefix will be added to tiered storage objects stored in the target Azure Block Blob Container. The list of protocols enabled for SSL connections. The interval with which we add an entry to the offset index, The maximum size in bytes of the offset index. The controller would trigger a leader balance if it goes above this value per broker. Specify the message format version the broker will use to append messages to the logs. How to Install and Configure Confluent Kafka? - Web Age Solutions The maximum receive size allowed before and during initial SASL authentication. The Confluent DataBalancer will attempt to keep incoming data throughput below this limit. The number of samples maintained to compute metrics. To learn more about topics in Kafka, see the Topics module - Apache Kafka 101 and Kafka Internals free courses. This is used in the binary exponential backoff mechanism that helps prevent gridlocked elections, Maximum time in milliseconds to wait without being able to fetch from the leader before triggering a new election, Maximum time without a successful fetch from the current leader before becoming a candidate and triggering an election for voters; Maximum time without receiving fetch from a majority of the quorum before asking around to see if theres a new epoch for leader, Map of id/endpoint information for the set of voters in a comma-separated list of {id}@{host}:{port} entries. Batch size for reading from the transaction log segments when loading producer ids and transactions into the cache (soft-limit, overridden if records are too large). The minimum time a message will remain uncompacted in the log. This will add the telemetry reporter to the brokers metric.reporters property if it is not already present. This is optional for client and only needed if ssl.keystore.location is configured. This value and sasl.login.refresh.buffer.seconds are both ignored if their sum exceeds the remaining lifetime of a credential. Specify the final compression type for a given topic. An explicit value overrides any true or false value set via the zookeeper.ssl.hostnameVerification system property (note the different name and values; true implies https and false implies blank). Provides configuration options for plaintext, SSL, SASL_SSL, and Kerberos. For brokers, login callback handler config must be prefixed with listener prefix and SASL mechanism name in lower-case. The values currently supported by the default ssl.engine.factory.class are [JKS, PKCS12, PEM]. By default there is no size limit only a time limit. The maximum number of bytes we will return for a fetch request. By delaying deletion, it is unlikely for a consumer to read part of a transaction before the corresponding marker is removed. Enables throttling for log replication on follower replicas present on this broker. Specify which version of the inter-broker protocol will be used. Default receive size is 512KB. Secret key to generate and verify delegation tokens. Kafka Broker Configurations for Confluent Platform This topic provides configuration parameters available for Confluent Platform. The (optional) value in milliseconds for the maximum wait between login attempts to the external authentication provider. Segments discarded from local store could continue to exist in tiered storage and remain available for fetches depending on retention configurations. Legal values are between 0.5 (50%) and 1.0 (100%) inclusive; a default value of 0.8 (80%) is used if no value is specified. Maximum number of partitions deleted from remote storage in the deletion interval defined by confluent.tier.topic.delete.check.interval.ms. Note that when a group is deleted via the delete-group request, its committed offsets will also be deleted without extra retention period; also when a topic is deleted via the delete-topic request, upon propagated metadata update any groups committed offsets for that topic will also be deleted without extra retention period. If this property is not specified, the S3 client will use the DefaultAWSCredentialsProviderChain to locate the credentials. Overrides any explicit value set via the javax.net.ssl.trustStorePassword system property (note the camelCase). Monitor Apache Kafka Clusters with Prometheus, Grafana, and Confluent If this property is not specified, the Azure Block Blob client will use the DefaultAzureCredential to locate the credentials across several well-known locations. The roles that this process plays: broker, controller, or broker,controller if it is both. New connections are blocked if either the listener or broker limit is reached. A list of cipher suites. This will ensure that the producer raises an exception if a majority of replicas do not receive a write. Segments discarded from local store could continue to exist in tiered storage and remain available for fetches depending on retention configurations. The default behavior is to detect which access style to use based on the configured endpoint and the bucket being accessed. If the URL is HTTP(S)-based, the JWKS data will be retrieved from the OAuth/OIDC provider via the configured URL on broker startup. If not set, the value in log.roll.jitter.hours is used, The maximum time before a new log segment is rolled out (in milliseconds). The (optional) value in milliseconds for the external authentication provider connection timeout. This flag is not enabled by default. The number of threads that the server uses for processing requests, which may include disk I/O, The number of threads that the server uses for receiving requests from the network and sending responses to the network, The number of threads per data directory to be used for log recovery at startup and flushing at shutdown, The number of threads that can move replicas between log directories, which may include disk I/O. Connections on the inter-broker listener will be throttled only when the listener-level rate limit is reached. As shown, key and value are separated by a colon and map entries are separated by commas. -1 means that broker failures will not trigger balancing actions, Controls what causes the Confluent DataBalancer to start rebalance operations. confluent kafka broker describe --all confluent kafka broker Give us feedback For example, internal and external traffic can be separated even if SSL is required for both. Overrides any explicit value set via the zookeeper.ssl.trustStore.location system property (note the camelCase). First you start up a Kafka cluster in KRaft mode, connect to a broker, create a topic, produce some messages, and consume them. Setting this value incorrectly will cause consumers with older versions to break as they will receive messages with a format that they dont understand. Keystore location when using TLS connectivity to AWS S3. "error":"Local: Timed out","error":"commit error" : This is happening on commit. Legal values are between 0 and 0.25 (25%) inclusive; a default value of 0.05 (5%) is used if no value is specified. The (optional) value in milliseconds for the initial wait between JWKS (JSON Web Key Set) retrieval attempts from the external authentication provider. This config specifies the upper capacity limit for network outgoing bytes per second per broker. The Azure Storage Account endpoint, in the format of https://{accountName}.blob.core.windows.net. Offset commit will be delayed until all replicas for the offsets topic receive the commit or this timeout is reached. The maximum time a message will remain ineligible for compaction in the log. For example, read_committed consumers rely on reading transaction markers in order to detect the boundaries of each transaction. acks - The KafkaProducer uses the acks configuration to tell the lead broker how many acknowledgments to wait for to consider a produce request complete. To learn more about consumers in Apache Kafka see this free Apache Kafka 101 course. The (optional) value in milliseconds for the initial wait between login attempts to the external authentication provider. Configuration names can optionally be prefixed with listener prefix and SASL mechanism name in lower-case. The OAuth claim for the subject is often named sub, but this (optional) setting can provide a different name to use for the subject included in the JWT payloads claims if the OAuth/OIDC provider uses a different name for that claim. and see the interactive diagram at Kafka Internals. Since at least one snapshot must exist before any logs can be deleted, this is a soft limit. Enable automatic broker id generation on the server. In practice, PLAIN, SCRAM and OAUTH mechanisms can use much smaller limits. The purge interval (in number of requests) of the fetch request purgatory. The maximum number of pending connections on the socket. You can find code samples for the consumer in different languages in these guides. Broker Configs Topic Configs Producer Configs Consumer Configs Kafka Streams Configs AdminClient Configs Kafka Connect Configs The fully qualified name of a SASL server callback handler class that implements the AuthenticateCallbackHandler interface. The broker will attempt to forcibly stop authentication that runs longer than this. If an authentication request is received for a JWT that includes a kid header claim value that isnt yet in the cache, the JWKS endpoint will be queried again on demand. The algorithm used by key manager factory for SSL connections. The size of the thread pool used by the TierFetcher. This value should be fine for most use cases. Brokers and the clients both authenticate each other (2-way authentication). The path to the credentials file used to create the Azure Block Blob client. Overrides any explicit value set via the javax.net.ssl.trustStoreType system property (note the camelCase). This should not be set manually, instead Cluster Registry http apis should be used. The password for the trust store file. Keystore location when using a client-side certificate with TLS connectivity to ZooKeeper. The default value of null means the type will be auto-detected based on the filename extension of the keystore. Enabling SASL-SSL for Kafka. key.deserializer The (optional) value in milliseconds for the broker to wait between refreshing its JWKS (JSON Web Key Set) cache that contains the keys to verify the signature of the JWT. This config controls whether the Balancer supports demoted brokers. How to Work with Apache Kafka in Your Spring Boot Application It would be nice to use the same directory everywheresomething like /opt/prometheus. openssl req -new -x509 -keyout ca-key -out ca-cert -days 365 The broker will disconnect any such connection that is not re-authenticated within the session lifetime and that is then subsequently used for any purpose other than re-authentication. key.serializer confluent-kafka-python provides a high-level Producer, Consumer and AdminClient compatible with all Apache Kafka TM brokers >= v0.8, Confluent Cloud and Confluent Platform. Starting with Confluent Platform version 7.4, KRaft mode is the default for metadata management for new Kafka clusters. Specifies whether to enable hostname verification in the ZooKeeper TLS negotiation process, with (case-insensitively) https meaning ZooKeeper hostname verification is enabled and an explicit blank value meaning it is disabled (disabling it is only recommended for testing purposes). For example, listener.name.sasl_ssl.scram-sha-256.sasl.jaas.config=com.example.ScramLoginModule required; Login thread sleep time between refresh attempts. By setting a particular message format version, the user is certifying that all the existing messages on disk are smaller or equal than the specified version. Acceptable values are ANY_UNEVEN_LOAD and EMPTY_BROKER. The maximum wait time for each fetcher request issued by follower replicas. Typically set to org.apache.zookeeper.ClientCnxnSocketNetty when using TLS connectivity to ZooKeeper. c# - Confluent.Kafka - sasl.mechanism set to PLAIN but security An explicit value overrides any value set via the zookeeper.client.secure system property (note the different name). Note that ZooKeeper does not support a key password different from the keystore password, so be sure to set the key password in the keystore to be identical to the keystore password; otherwise the connection attempt to Zookeeper will fail. Leave hostname empty to bind to default interface. If you are using Kafka on Windows, you probably need to set it to true. The replication factor for the tier metadata topic (set higher to ensure availability). If the key is not set or set to empty string, brokers will disable the delegation token support. appsettings.json Login uses an exponential backoff algorithm with an initial wait based on the sasl.login.retry.backoff.ms setting and will double in wait length between attempts up to a maximum wait length specified by the sasl.login.retry.backoff.max.ms setting. The number of samples to retain in memory for alter log dirs replication quotas, The time span of each sample for alter log dirs replication quotas. The value should be a valid MetadataVersion. This is required only when the secret is updated. This config specifies the upper capacity limit for producer incoming bytes per second per broker. The JWT will be inspected for the standard OAuth iss claim and if this value is set, the broker will match it exactly against what is in the JWTs iss claim. Truststore password when using TLS connectivity to AWS S3. If total replica.fetch.response.max.bytes for all fetchers on the broker exceeds this value, all cluster link fetchers reduce their response size to meet this limit. Specifies whether to enable Online Certificate Status Protocol in the ZooKeeper TLS protocols. document.write(new Date().getFullYear()); If the log.cleaner.max.compaction.lag.ms or the log.cleaner.min.compaction.lag.ms configurations are also specified, then the log compactor considers the log eligible for compaction as soon as either: (i) the dirty ratio threshold has been met and the log has had dirty (uncompacted) records for at least the log.cleaner.min.compaction.lag.ms duration, or (ii) if the log has had dirty (uncompacted) records for at most the log.cleaner.max.compaction.lag.ms period. A list of classes to use as metrics reporters. Should be enabled if using any topics with a cleanup.policy=compact including the internal offsets topic. Deprecated. The number of background threads to use for log cleaning, The default cleanup policy for segments beyond the retention window. Just one broker? This prefix will be added to tiered storage objects stored in GCS. The URL for the OAuth/OIDC identity provider. Every node in a KRaft cluster must have a unique node.id, this includes broker and controller nodes. Truststore password when using TLS connectivity to ZooKeeper. Overview Azure Event Hubs provides an Apache Kafka endpoint on an event hub, which enables users to connect to the event hub using the Kafka protocol. The value should be either CreateTime or LogAppendTime. Apache Kafka GUI Management and Monitoring - Confluent The SecureRandom PRNG implementation to use for SSL cryptography operations. Operating system: (MacOS & CentOS) Provide client logs (with 'debug': '..' as necessary) If it is not set, the metadata log is placed in the first log directory from log.dirs. The name of the security provider used for SSL connections. Specifies the enabled protocol(s) in ZooKeeper TLS negotiation (csv). The number of threads to use for various background processing tasks. Unlike listeners, it is not valid to advertise the 0.0.0.0 meta-address. Segments uploaded by fenced leaders may still be being uploaded when retention occurs on a newly elected leader. The broker returns an incorrect hostname to the client The client then tries to connect to this incorrect address, and then fails (since the Kafka broker is not on the client machine, which is what localhost points to) This article will walk through some common scenarios and explain how to fix each one. The (optional) comma-delimited setting for the broker to use to verify that the JWT was issued for one of the expected audiences. This configuration controls how often the active controller should write no-op records to the metadata partition. By default, the and quotas that are stored in ZooKeeper are applied. The file format of the trust store file. Broker-wide limit should be configured based on broker capacity while listener limits should be configured based on application requirements. Kafka Configuration Reference for Confluent Platform Apache Kafka uses key-value pairs in the property file format for configuration. Overrides any explicit value set via the zookeeper.ssl.trustStore.password system property (note the camelCase). The maximum difference allowed between the timestamp when a broker receives a message and the timestamp specified in the message. This config specifies the upper bound for bandwidth in bytes to move replicas around for replica reassignment. Default SSL engine factory supports only PEM format with a list of X.509 certificates, Private key in the format specified by ssl.keystore.type. Create the /opt/prometheus directory: Scan interval to remove expired delegation tokens. If the URL is file-based, it specifies a file containing an access token (in JWT serialized form) issued by the OAuth/OIDC identity provider to use for authorization. Apache, Apache Kafka, Kafka, and associated open source project names are trademarks of the Apache Software Foundation, Be the first to get updates and new content, Confluent Platform Configuration Reference, metadata.log.max.record.bytes.between.snapshots, hostname1:port1,hostname2:port2,hostname3:port3, hostname1:port1,hostname2:port2,hostname3:port3/chroot/path, listener.name.internal.max.connection.creation.rate, org.apache.zookeeper.ClientCnxnSocketNetty, zookeeper.ssl.endpoint.identification.algorithm, org.apache.kafka.server.policy.AlterConfigPolicy, org.apache.kafka.server.authorizer.Authorizer, org.apache.kafka.common.metrics.JmxReporter, confluent.tier.fenced.segment.delete.delay.ms, org.apache.kafka.server.policy.CreateClusterLinkPolicy, org.apache.kafka.server.policy.CreateTopicPolicy, listener.name.internal.ssl.keystore.location, org.apache.kafka.common.metrics.MetricsReporter, org.apache.kafka.common.security.auth.SecurityProviderCreator, Deploy Hybrid Confluent Platform and Cloud Environment, Tutorial: Introduction to Streaming Application Development, Clickstream Data Analysis Pipeline Using ksqlDB, Replicator Schema Translation Example for Confluent Platform, DevOps for Kafka with Kubernetes and GitOps, Case Study: Kafka Connect management with GitOps, Configure Automatic Startup and Monitoring, Migrate Confluent Cloud ksqlDB applications, Connect ksqlDB to Confluent Control Center, Connect Confluent Platform Components to Confluent Cloud, Pipelining with Kafka Connect and Kafka Streams, Tutorial: Moving Data In and Out of Kafka, Single Message Transforms for Confluent Platform, Configuring Kafka Client Authentication with LDAP, Authorization using Role-Based Access Control, Tutorial: Group-Based Authorization Using LDAP, Configure Audit Logs using the Confluent CLI, Configure MDS to Manage Centralized Audit Logs, Configure Audit Logs using the Properties File, Log in to Control Center when RBAC enabled, Create Hybrid Cloud and Bridge-to-Cloud Deployments, Transition Standard Active-Passive Data Centers to a Multi-Region Stretched Cluster, Replicator for Multi-Datacenter Replication, Tutorial: Replicating Data Across Clusters, Installing and Configuring Control Center, Check Control Center Version and Enable Auto-Update, Connecting Control Center to Confluent Cloud, Confluent Monitoring Interceptors in Control Center, Docker Configuration Parameters for Confluent Platform, Configure a Multi-Node Environment with Docker, Confluent Platform Metadata Service (MDS), Configure the Confluent Platform Metadata Service (MDS), Configure Confluent Platform Components to Communicate with MDS over TLS/SSL, Configure mTLS Authentication and RBAC for Kafka Brokers, Configure Kerberos Authentication for Brokers Running MDS, Configure LDAP Group-Based Authorization for MDS, kafka.common.TopicPlacement$TopicPlacementValidator@72bc6553, kafka.tier.backupobjectlifecycle.RetentionToBackupConfigValidator$@66982506, [uncompressed, zstd, lz4, snappy, gzip, producer], [0.8.0, 0.8.1, 0.8.2, 0.9.0, 0.10.0-IV0, 0.10.0-IV1, 0.10.1-IV0, 0.10.1-IV1, 0.10.1-IV2, 0.10.2-IV0, 0.11.0-IV0, 0.11.0-IV1, 0.11.0-IV2, 1.0-IV0, 1.1-IV0, 2.0-IV0, 2.0-IV1, 2.1-IV0, 2.1-IV1, 2.1-IV2, 2.2-IV0, 2.2-IV1, 2.3-IV0, 2.3-IV1, 2.4-IV0, 2.4-IV1, 2.5-IV0, 2.6-IV0, 2.7-IV0, 2.7-IV1, 2.7-IV2, 2.8-IV0, 2.8-IV1, 3.0-IV0, 3.0-IV1, 3.1-IV0, 3.2-IV0, 3.3-IV0, 3.3-IV1, 3.3-IV2, 3.3-IV3, 3.4-IV0], org.apache.kafka.common.security.authenticator.DefaultKafkaPrincipalBuilder, [PLAINTEXT, SSL, SASL_PLAINTEXT, SASL_SSL], PLAINTEXT:PLAINTEXT,SSL:SSL,SASL_PLAINTEXT:SASL_PLAINTEXT,SASL_SSL:SASL_SSL.
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confluent kafka broker configuration 2023