AWS for Fluent Bit 2.25.0

2.25.0

This release includes:

• An Amazon Linux 2 Base
• Fluent Bit 1.9.3
• Amazon CloudWatch Logs for Fluent Bit 1.7.0
• Amazon Kinesis Streams for Fluent Bit 1.9.0
• Amazon Kinesis Firehose for Fluent Bit 1.6.1

Compared to 2.24.0 this release adds the following feature that we are working on getting accepted upstream:

• Enhancement - Add kube_token_ttl option to kubernetes filter to support refreshing the service account token used to talk to the API server. Prior to this change Fluent Bit would only read the token on startup. fluentbit:5332

---

We’ve run the new released image in our ECS load testing framework and here is the result. This testing result provides benchmarks of aws-for-fluent-bit under different input load.

plugin		20 MB/s	25 MB/s	30 MB/s
kinesis_firehose	Log Loss	✅	✅	✅
	Log Duplication	✅	✅	0%(1275)
kinesis_streams	Log Loss	0% (3113)	0% (6127)	0% (12780)
	Log Duplication	✅	0% (500)	0% (1000)
s3	Log Loss	✅	✅	✅
	Log Duplication	✅	✅	✅

plugin		1 MB/s	2 MB/s	3 MB/s
cloudwatch_logs	Log Loss	✅	✅	23%
	Log Duplication	✅	✅	✅

Note:

• The green check ✅ in the table means no log loss or no log duplication.
• Number in parentheses means the number of records out of total records. For example, 0%(1064/1.8M) under 30Mb/s throughput means 1064 duplicate records out of 18M input records by which log duplication percentage is 0%.
• For CloudWatch output, the only safe throughput where we consistently don't see log loss is 1 MB/s. At 2 Mb/s and beyond, we occasionally see some log loss and throttling.
• Log loss is the percentage of data lost and log duplication is the percentage of duplicate logs received at the destination. Your results may differ because they can be influenced by many factors like different configs and environment settings. Log duplication is exclusively caused by partially succeeded batches that were retried, which means it is random.

AWS for Fluent Bit 2.24.0

Changelog

2.24.0

This release includes:

• An Amazon Linux 2 Base
• Fluent Bit 1.9.3
• Amazon CloudWatch Logs for Fluent Bit 1.7.0
• Amazon Kinesis Streams for Fluent Bit 1.9.0
• Amazon Kinesis Firehose for Fluent Bit 1.6.1

Compared to 2.23.4 this release adds:

• Bug - Resolve IMDSv1 fallback error introduced in 2.21.0 aws-for-fluent-bit:259
• Bug - Cloudwatch Fix integer overflow on 32 bit systems when converting tv_sec to millis fluentbit:3640
• Enhancement - Only create Cloudwatch Logs log group if it does not already exist to prevent throttling fluentbit:4826
• Enhancement - Implement docker log driver partial message support for multiline buffered mode aws-for-fluent-bit:25, partial message mode example
• Enhancement - Gracefully handle Cloudwatch Logs DataAlreadyAcceptedException fluentbit:4948
• Feature - Add sigv4 authentication options to HTTP output plugin fluentbit:5165
• Feature - Add Firehose compression configuration options fluentbit:4371
• New Plugin - opensearch plugin in Fluent Bit core

---

We’ve run the new released image in our ECS load testing framework and here is the result. This testing result provides benchmarks of aws-for-fluent-bit under different input load.

plugin		20 MB/s	25 MB/s	30 MB/s
kinesis_firehose	Log Loss	✅	✅	✅
	Log Duplication	✅	✅	✅
kinesis_streams	Log Loss	✅	✅	✅
	Log Duplication	✅	✅	0% (1000/1.8M)
s3	Log Loss	✅	✅	✅
	Log Duplication	✅	✅	✅

plugin		1 MB/s	2 MB/s	3 MB/s
cloudwatch_logs	Log Loss	✅	✅	✅
	Log Duplication	✅	✅	✅

Note:

• The green check ✅ in the table means no log loss or no log duplication.
• Number in parentheses means the number of records out of total records. For example, 0%(1064) under 30Mb/s throughput means 1064 duplicate records out of 18M input records by which log duplication percentage is 0%.
• For CloudWatch output, the only safe throughput where we consistently don't see log loss is 1 MB/s. At 2 Mb/s and beyond, we occasionally see some log loss and throttling.
• Log loss is the percentage of data lost and log duplication is the percentage of duplicate logs received at the destination. Your results may differ because they can be influenced by many factors like different configs and environment settings. Log duplication is exclusively caused by partially succeeded batches that were retried, which means it is random.

AWS for Fluent Bit 2.23.4

Changelog

2.23.4

This release includes:

• An Amazon Linux 2 Base
• Fluent Bit 1.8.15
• Amazon CloudWatch Logs for Fluent Bit 1.7.0
• Amazon Kinesis Streams for Fluent Bit 1.9.0
• Amazon Kinesis Firehose for Fluent Bit 1.6.1

Compared to 2.23.3 this release adds:

• Go version upgrade to 1.17.9

Same as 2.23.3, this release includes the following fix for AWS customers that we are working on getting accepted upstream:

• Bug - Resolve IMDSv1 fallback error introduced in 2.21.0 aws-for-fluent-bit:259

Important Note:

• A security vulnerability was found in amazonlinux which we use as our base image. This new image will be based on an updated version of amazonlinux that resolves this CVE.

---

We’ve run the new released image in our ECS load testing framework and here is the result. This testing result provides benchmarks of aws-for-fluent-bit under different input load.

plugin		20 MB/s	25 MB/s	30 MB/s
kinesis_firehose	Log Loss	✅	✅	✅
	Log Duplication	✅	0%(841)	0%(500)
kinesis_streams	Log Loss	0% (3113)	0% (6127)	0% (12780)
	Log Duplication	0.1%(12936)	0% (1339)	0% (491)
s3	Log Loss	✅	✅	✅
	Log Duplication	✅	✅	✅

plugin		1 MB/s	2 MB/s	3 MB/s
cloudwatch_logs	Log Loss	✅	0.1%(1339)	0%(968)
	Log Duplication	✅	5%(63441)	4%(73511)

Note:

• The green check ✅ in the table means no log loss or no log duplication.
• Number in parentheses means the number of records out of total records. For example, 0%(1064) under 30Mb/s throughput means 1064 duplicate records out of 18M input records by which log duplication percentage is 0%.
• CloudWatch has own throughput limit for single log stream. Based on our tests, it starts to appear throttling issue after input load > 1Mb/s.
• Log loss is the percentage of data lost and log duplication is the percentage of duplicate logs received at the destination. Your results may differ because they can be influenced by many factors like different configs and environment settings. Log duplication is exclusively caused by partially succeeded batches that were retried, which means it is random.

AWS for Fluent Bit 2.23.3

2.23.3

This release includes:

• An Amazon Linux 2 Base
• Fluent Bit 1.8.15
• Amazon CloudWatch Logs for Fluent Bit 1.7.0
• Amazon Kinesis Streams for Fluent Bit 1.9.0
• Amazon Kinesis Firehose for Fluent Bit 1.6.1

Same as 2.23.2, this release includes the following fix for AWS customers that we are working on getting accepted upstream:

• Bug - Resolve IMDSv1 fallback error introduced in 2.21.0 aws-for-fluent-bit:259

New Tool:

• firelens-datajet is a holistic log/metric routing software test tool made to flexibly send test data to Fluent Bit in a repeatable, reliable, and portable manner. Create test configuration JSONs that modularly connect test data generators to data senders, customize data generation rate, send data in parallel over various ingestion routes, and mock log router destinations.

---

We’ve run the new released image in our ECS load testing framework and here is the result. This testing result provides benchmarks of aws-for-fluent-bit under different input load.

plugin		20 MB/s	25 MB/s	30 MB/s
kinesis_firehose	Log Loss	✅	✅	✅
	Log Duplication	0%(1309)	✅	0%(468)
kinesis_streams	Log Loss	✅	✅	✅
	Log Duplication	0%(484)	✅	0%(1341)
s3	Log Loss	✅	✅	✅
	Log Duplication	✅	✅	✅

plugin		1 MB/s	2 MB/s	3 MB/s
cloudwatch_logs	Log Loss	✅	0%(1308)	0%(2678)
	Log Duplication	✅	3%(40280)	4%(51357)

Note:

• The green check ✅ in the table means no log loss or no log duplication.
• Number in parentheses means the number of records out of total records. For example, 0%(1064) under 30Mb/s throughput means 1064 duplicate records out of 18M input records by which log duplication percentage is 0%.
• CloudWatch has own throughput limit for single log stream. Based on our tests, it starts to appear throttling issue after input load > 1Mb/s.
• Log loss is the percentage of data lost and log duplication is the percentage of duplicate logs received at the destination. Your results may differ because they can be influenced by many factors like different configs and environment settings. Log duplication is exclusively caused by partially succeeded batches that were retried, which means it is random.

AWS for Fluent Bit 2.23.2

2.23.2

This release includes:

• An Amazon Linux 2 Base
• Fluent Bit 1.8.14
• Amazon CloudWatch Logs for Fluent Bit 1.7.0
• Amazon Kinesis Streams for Fluent Bit 1.9.0
• Amazon Kinesis Firehose for Fluent Bit 1.6.1

Compared to 2.23.1 this release adds:

• Enhancement - Mitigate throttling issue on log group in cloudwatch_logs plugin fluentbit:4826

Same as 2.23.1, this release includes the following fix for AWS customers that we are working on getting accepted upstream:

• Bug - Resolve IMDSv1 fallback error introduced in 2.21.0 aws-for-fluent-bit:259

---

We’ve run the new released image in our ECS load testing framework and here is the result. This testing result provides benchmarks of aws-for-fluent-bit under different input load.

plugin		20 MB/s	25 MB/s	30 MB/s
kinesis_firehose	Log Loss	✅	0%(341)	✅
	Log Duplication	✅	✅	0%(500)
kinesis_streams	Log Loss	✅	0%(3824)	✅
	Log Duplication	0%(1819)	✅	✅
s3	Log Loss	✅	✅	✅
	Log Duplication	✅	✅	✅

plugin		1 MB/s	2 MB/s	3 MB/s
cloudwatch_logs	Log Loss	2%(17084)	0%(1671)	0%(2678)
	Log Duplication	✅	7%(77539)	6%(80560)

Note:

• The green check ✅ in the table means no log loss or no log duplication.
• Number in parentheses means the number of records out of total records. For example, 0%(1064) under 30Mb/s throughput means 1064 duplicate records out of 18M input records by which log duplication percentage is 0%.
• CloudWatch has own throughput limit for single log stream. Based on our tests, it starts to appear throttling issue after input load > 1Mb/s.
• Log loss is the percentage of data lost and log duplication is the percentage of duplicate logs received at the destination. Your results may differ because they can be influenced by many factors like different configs and environment settings. Log duplication is exclusively caused by partially succeeded batches that were retried, which means it is random.

AWS for Fluent Bit 2.23.1

2.23.1

This release includes:

• An Amazon Linux 2 Base
• Fluent Bit 1.8.13
• Amazon CloudWatch Logs for Fluent Bit 1.7.0
• Amazon Kinesis Streams for Fluent Bit 1.9.0
• Amazon Kinesis Firehose for Fluent Bit 1.6.1

Same as 2.23.0, this release includes the following fix for AWS customers that we are working on getting accepted upstream:

• Bug - Resolve IMDSv1 fallback error introduced in 2.21.0 aws-for-fluent-bit:259

Important Note:

• Two security vulnerability were found in amazonlinux which we use as base image to our aws-for-fluent-bit image- ALAS-2022-1764 and ALAS-2022-1766. This new image will be based on an updated version of amazonlinux that resolves these CVEs.

---

We’ve run the new released image in our ECS load testing framework and here is the result. This testing result provides benchmarks of aws-for-fluent-bit under different input load.

plugin		20 MB/s	25 MB/s	30 MB/s
kinesis_firehose	Log Loss	✅	0%(16)	0%(1630)
	Log Duplication	✅	✅	0%(256)
kinesis_streams	Log Loss	✅	✅	0%(15)
	Log Duplication	✅	0%(1831)	0%(485)
s3	Log Loss	✅	✅	✅
	Log Duplication	✅	✅	✅

plugin		1 MB/s	2 MB/s	3 MB/s
cloudwatch_logs	Log Loss	✅	0%(332)	0%(2307)
	Log Duplication	✅	6%(80560)	3%(51357)

Note:

• The green check ✅ in the table means no log loss or no log duplication.
• Number in parentheses means the number of records out of total records. For example, 0%(1064) under 30Mb/s throughput means 1064 duplicate records out of 18M input records by which log duplication percentage is 0%.
• CloudWatch has own throughput limit for single log stream. Based on our tests, it starts to appear throttling issue after input load > 1Mb/s.
• Log loss is the percentage of data lost and log duplication is the percentage of duplicate logs received at the destination. Your results may differ because they can be influenced by many factors like different configs and environment settings. Log duplication is exclusively caused by partially succeeded batches that were retried, which means it is random.

AWS for Fluent Bit 2.23.0

2.23.0

This release includes:

• An Amazon Linux 2 Base
• Fluent Bit 1.8.13
• Amazon CloudWatch Logs for Fluent Bit 1.7.0
• Amazon Kinesis Streams for Fluent Bit 1.9.0
• Amazon Kinesis Firehose for Fluent Bit 1.6.1

Compared to 2.22.0 this release adds:

• Feature - Add timeout config for AWS SDK Go HTTP calls kinesis:178
• Enhancement - Migrate AWS plugins to performant 2.25.0-mbedtls base64 implementation fluentbit:4422
• Bug - Fix message loss issue using concurrency feature with 0 retries kinesis:179

Compared to 2.22.0 this release deletes the following fix which has been covered in new enhancement:

• Bug - Downgrade mbedtls to 2.24.0 to fix the performance regression issue in mbedtls 2.26.0 fluentbit:4110

Same as 2.22.0, this release includes the following fix for AWS customers that we are working on getting accepted upstream:

• Bug - Resolve IMDSv1 fallback error introduced in 2.21.0 aws-for-fluent-bit:259

---

We’ve run the new released image in our ECS load testing framework and here is the result. This testing result provides benchmarks of aws-for-fluent-bit under different input load.

plugin		20Mb/s	25Mb/s	30Mb/s
kinesis_firehose	Log Loss	✅	✅	✅
	Log Duplication	✅	✅	0%(1064)
kinesis_streams	Log Loss	✅	✅	✅
	Log Duplication	✅	✅	✅
s3	Log Loss	✅	✅	✅
	Log Duplication	✅	✅	✅

plugin		1Mb/s	2Mb/s	3Mb/s
cloudwatch_logs	Log Loss	✅	0%(332)	0%(2678)
	Log Duplication	✅	6%(71497)	2%(39273)

Note:

• The green check ✅ in the table means no log loss or no log duplication.
• Number in parentheses means the number of records out of total records. For example, 0%(1064) under 30Mb/s throughput means 1064 duplicate records out of 18M input records by which log duplication percentage is 0%.
• CloudWatch has own throughput limit for single log stream. Based on our tests, it starts to appear throttling issue after input load > 1Mb/s.
• Log loss is the percentage of data lost and log duplication is the percentage of duplicate logs received at the destination. Your results may differ because they can be influenced by many factors like different configs and environment settings. Log duplication is exclusively caused by partially succeeded batches that were retried, which means it is random.

AWS for Fluent Bit 2.22.0

2.22.0

This release includes:

• An Amazon Linux 2 Base
• Fluent Bit 1.8.12
• Amazon CloudWatch Logs for Fluent Bit 1.7.0
• Amazon Kinesis Streams for Fluent Bit 1.8.1
• Amazon Kinesis Firehose for Fluent Bit 1.6.1

Compared to 2.21.6 this release adds:

• Feature - The multiline filter now fully supports key ECS multiline log use cases using regular expressions aws-for-fluent-bit:100
• Feature - Add support for external_id in AWS output plugins aws-for-fluent-bit:171
• Bug - Fix truncation issue after compression kinesis:183

Same as 2.21.6, this release includes the following fix for AWS customers that has been accepted by upstream:

• Bug - Fix return value from tls_net_read fluentbit:4098

Same as 2.21.6, this release includes the following fixes for AWS customers that we are working on getting accepted upstream:

• Bug - Downgrade mbedtls to 2.24.0 to fix the performance regression issue in mbedtls 2.26.0 fluentbit:4110
• Bug - Resolve IMDSv1 fallback error introduced in 2.21.0 aws-for-fluent-bit:259

AWS for Fluent Bit 2.21.6

2.21.6

This release includes:

• An Amazon Linux 2 Base
• Fluent Bit 1.8.11
• Amazon CloudWatch Logs for Fluent Bit 1.6.4
• Amazon Kinesis Streams for Fluent Bit 1.8.0
• Amazon Kinesis Firehose for Fluent Bit 1.6.1

Compared to 2.21.5 this release adds:

• Go version upgrade to 1.17.6

Same as 2.21.5, this release includes the following fixes for AWS customers that we are working on getting accepted upstream:

• Bug - Fix return value from tls_net_read fluentbit:4098
• Bug - Downgrade mbedtls to 2.24.0 to fix the performance regression issue in mbedtls 2.26.0 fluentbit:4110
• Bug - Resolve IMDSv1 fallback error introduced in 2.21.0 aws-for-fluent-bit:259

AWS for Fluent Bit 2.21.5

2.21.5

This release includes:

• An Amazon Linux 2 Base
• Fluent Bit 1.8.11
• Amazon CloudWatch Logs for Fluent Bit 1.6.4
• Amazon Kinesis Streams for Fluent Bit 1.8.0
• Amazon Kinesis Firehose for Fluent Bit 1.6.1

Same as 2.21.4, this release includes the following fixes for AWS customers that we are working on getting accepted upstream:

• Bug - Fix return value from tls_net_read fluentbit:4098
• Bug - Downgrade mbedtls to 2.24.0 to fix the performance regression issue in mbedtls 2.26.0 fluentbit:4110
• Bug - Resolve IMDSv1 fallback error introduced in 2.21.0 aws-for-fluent-bit:259