Docs Cloud Redpanda Connect Components Inputs kafka_franz kafka_franz Type: InputOutput Available in: Cloud, Self-Managed A Kafka input using the Franz Kafka client library. Common Advanced # Common config fields, showing default values input: label: "" kafka_franz: seed_brokers: [] # No default (required) topics: [] # No default (required) regexp_topics: false consumer_group: "" # No default (optional) auto_replay_nacks: true # All config fields, showing default values input: label: "" kafka_franz: seed_brokers: [] # No default (required) topics: [] # No default (required) regexp_topics: false consumer_group: "" # No default (optional) client_id: benthos rack_id: "" checkpoint_limit: 1024 auto_replay_nacks: true commit_period: 5s start_from_oldest: true tls: enabled: false skip_cert_verify: false enable_renegotiation: false root_cas: "" root_cas_file: "" client_certs: [] sasl: [] # No default (optional) multi_header: false batching: count: 0 byte_size: 0 period: "" check: "" processors: [] # No default (optional) metadata_max_age: 5m When a consumer group is specified this input consumes one or more topics where partitions will automatically balance across any other connected clients with the same consumer group. When a consumer group is not specified topics can either be consumed in their entirety or with explicit partitions. This input often out-performs the traditional kafka input as well as providing more useful logs and error messages. Metadata This input adds the following metadata fields to each message: - kafka_key - kafka_topic - kafka_partition - kafka_offset - kafka_timestamp_ms - kafka_timestamp_unix - kafka_tombstone_message - All record headers Fields seed_brokers A list of broker addresses to connect to in order to establish connections. If an item of the list contains commas it will be expanded into multiple addresses. Type: array # Examples seed_brokers: - localhost:9092 seed_brokers: - foo:9092 - bar:9092 seed_brokers: - foo:9092,bar:9092 topics A list of topics to consume from. Multiple comma separated topics can be listed in a single element. When a consumer_group is specified partitions are automatically distributed across consumers of a topic, otherwise all partitions are consumed. Alternatively, it’s possible to specify explicit partitions to consume from with a colon after the topic name, e.g. foo:0 would consume the partition 0 of the topic foo. This syntax supports ranges, e.g. foo:0-10 would consume partitions 0 through to 10 inclusive. Finally, it’s also possible to specify an explicit offset to consume from by adding another colon after the partition, e.g. foo:0:10 would consume the partition 0 of the topic foo starting from the offset 10. If the offset is not present (or remains unspecified) then the field start_from_oldest determines which offset to start from. Type: array # Examples topics: - foo - bar topics: - things.* topics: - foo,bar topics: - foo:0 - bar:1 - bar:3 topics: - foo:0,bar:1,bar:3 topics: - foo:0-5 regexp_topics Whether listed topics should be interpreted as regular expression patterns for matching multiple topics. When topics are specified with explicit partitions this field must remain set to false. Type: bool Default: false consumer_group An optional consumer group to consume as. When specified the partitions of specified topics are automatically distributed across consumers sharing a consumer group, and partition offsets are automatically committed and resumed under this name. Consumer groups are not supported when specifying explicit partitions to consume from in the topics field. Type: string client_id An identifier for the client connection. Type: string Default: "benthos" rack_id A rack identifier for this client. Type: string Default: "" checkpoint_limit Determines how many messages of the same partition can be processed in parallel before applying back pressure. When a message of a given offset is delivered to the output the offset is only allowed to be committed when all messages of prior offsets have also been delivered, this ensures at-least-once delivery guarantees. However, this mechanism also increases the likelihood of duplicates in the event of crashes or server faults, reducing the checkpoint limit will mitigate this. Type: int Default: 1024 auto_replay_nacks Whether messages that are rejected (nacked) at the output level should be automatically replayed indefinitely, eventually resulting in back pressure if the cause of the rejections is persistent. If set to false these messages will instead be deleted. Disabling auto replays can greatly improve memory efficiency of high throughput streams as the original shape of the data can be discarded immediately upon consumption and mutation. Type: bool Default: true commit_period The period of time between each commit of the current partition offsets. Offsets are always committed during shutdown. Type: string Default: 5s start_from_oldest Determines whether to consume from the oldest available offset, otherwise messages are consumed from the latest offset. The setting is applied when creating a new consumer group or the saved offset no longer exists. Type: bool Default: true tls Custom TLS settings can be used to override system defaults. Type: object tls.enabled Whether custom TLS settings are enabled. Type: bool Default: false tls.skip_cert_verify Whether to skip server side certificate verification. Type: bool Default: false tls.enable_renegotiation Whether to allow the remote server to repeatedly request renegotiation. Enable this option if you’re seeing the error message local error: tls: no renegotiation. Type: bool Default: false tls.root_cas An optional root certificate authority to use. This is a string, representing a certificate chain from the parent trusted root certificate, to possible intermediate signing certificates, to the host certificate. This field contains sensitive information that usually shouldn’t be added to a configuration directly. For more information, see Manage Secrets before adding it to your configuration. Type: string Default: "" # Examples root_cas: |- -----BEGIN CERTIFICATE----- ... -----END CERTIFICATE----- tls.root_cas_file An optional path of a root certificate authority file to use. This is a file, often with a .pem extension, containing a certificate chain from the parent trusted root certificate, to possible intermediate signing certificates, to the host certificate. Type: string Default: "" # Examples root_cas_file: ./root_cas.pem tls.client_certs A list of client certificates to use. For each certificate either the fields cert and key, or cert_file and key_file should be specified, but not both. Type: array Default: [] # Examples client_certs: - cert: foo key: bar client_certs: - cert_file: ./example.pem key_file: ./example.key tls.client_certs[].cert A plain text certificate to use. Type: string Default: "" tls.client_certs[].key A plain text certificate key to use. This field contains sensitive information that usually shouldn’t be added to a configuration directly. For more information, see Manage Secrets before adding it to your configuration. Type: string Default: "" tls.client_certs[].cert_file The path of a certificate to use. Type: string Default: "" tls.client_certs[].key_file The path of a certificate key to use. Type: string Default: "" tls.client_certs[].password A plain text password for when the private key is password encrypted in PKCS#1 or PKCS#8 format. The obsolete pbeWithMD5AndDES-CBC algorithm is not supported for the PKCS#8 format. Because the obsolete pbeWithMD5AndDES-CBC algorithm does not authenticate the ciphertext, it is vulnerable to padding oracle attacks that can let an attacker recover the plaintext. This field contains sensitive information that usually shouldn’t be added to a configuration directly. For more information, see Manage Secrets before adding it to your configuration. Type: string Default: "" # Examples password: foo password: ${KEY_PASSWORD} sasl Specify one or more methods of SASL authentication. SASL is tried in order; if the broker supports the first mechanism, all connections will use that mechanism. If the first mechanism fails, the client will pick the first supported mechanism. If the broker does not support any client mechanisms, connections will fail. Type: array # Examples sasl: - mechanism: SCRAM-SHA-512 password: bar username: foo sasl[].mechanism The SASL mechanism to use. Type: string Option Summary AWS_MSK_IAM AWS IAM based authentication as specified by the 'aws-msk-iam-auth' java library. OAUTHBEARER OAuth Bearer based authentication. PLAIN Plain text authentication. SCRAM-SHA-256 SCRAM based authentication as specified in RFC5802. SCRAM-SHA-512 SCRAM based authentication as specified in RFC5802. none Disable sasl authentication sasl[].username A username to provide for PLAIN or SCRAM-* authentication. Type: string Default: "" sasl[].password A password to provide for PLAIN or SCRAM-* authentication. This field contains sensitive information that usually shouldn’t be added to a configuration directly. For more information, see Manage Secrets before adding it to your configuration. Type: string Default: "" sasl[].token The token to use for a single session’s OAUTHBEARER authentication. Type: string Default: "" sasl[].extensions Key/value pairs to add to OAUTHBEARER authentication requests. Type: object sasl[].aws Contains AWS specific fields for when the mechanism is set to AWS_MSK_IAM. Type: object sasl[].aws.region The AWS region to target. Type: string Default: "" sasl[].aws.endpoint Allows you to specify a custom endpoint for the AWS API. Type: string Default: "" sasl[].aws.credentials Optional manual configuration of AWS credentials to use. More information can be found in Amazon Web Services. Type: object sasl[].aws.credentials.profile A profile from ~/.aws/credentials to use. Type: string Default: "" sasl[].aws.credentials.id The ID of credentials to use. Type: string Default: "" sasl[].aws.credentials.secret The secret for the credentials being used. This field contains sensitive information that usually shouldn’t be added to a configuration directly. For more information, see Manage Secrets before adding it to your configuration. Type: string Default: "" sasl[].aws.credentials.token The token for the credentials being used, required when using short term credentials. Type: string Default: "" sasl[].aws.credentials.from_ec2_role Use the credentials of a host EC2 machine configured to assume an IAM role associated with the instance. Type: bool Default: false sasl[].aws.credentials.role A role ARN to assume. Type: string Default: "" sasl[].aws.credentials.role_external_id An external ID to provide when assuming a role. Type: string Default: "" multi_header Decode headers into lists to allow handling of multiple values with the same key Type: bool Default: false batching Allows you to configure a batching policy that applies to individual topic partitions in order to batch messages together before flushing them for processing. Batching can be beneficial for performance as well as useful for windowed processing, and doing so this way preserves the ordering of topic partitions. Type: object # Examples batching: byte_size: 5000 count: 0 period: 1s batching: count: 10 period: 1s batching: check: this.contains("END BATCH") count: 0 period: 1m batching.count A number of messages at which the batch should be flushed. If 0 disables count based batching. Type: int Default: 0 batching.byte_size An amount of bytes at which the batch should be flushed. If 0 disables size based batching. Type: int Default: 0 batching.period A period in which an incomplete batch should be flushed regardless of its size. Type: string Default: "" # Examples period: 1s period: 1m period: 500ms batching.check A Bloblang query that should return a boolean value indicating whether a message should end a batch. Type: string Default: "" # Examples check: this.type == "end_of_transaction" batching.processors A list of processors to apply to a batch as it is flushed. This allows you to aggregate and archive the batch however you see fit. Please note that all resulting messages are flushed as a single batch, therefore splitting the batch into smaller batches using these processors is a no-op. Type: array # Examples processors: - archive: format: concatenate processors: - archive: format: lines processors: - archive: format: json_array metadata_max_age The maximum period of time after which metadata is refreshed. Type: string Default: 5m Back to top × Simple online edits For simple changes, such as fixing a typo, you can edit the content directly on GitHub. Edit on GitHub Or, open an issue to let us know about something that you want us to change. Open an issue Contribution guide For extensive content updates, or if you prefer to work locally, read our contribution guide . Was this helpful? thumb_up thumb_down group Ask in the community mail Share your feedback group_add Make a contribution kafka mqtt