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Apply connect_timeout also to TLS handshake #3601

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merged 1 commit into from
Jan 14, 2022

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sekiyama58
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Which issue(s) this PR fixes:
Fixes # N/A

What this PR does / why we need it:
When out_forward plugin uses TLS transport, if the TLS handshake takes a long time or hangs,
the flusher (or event_loop for heartbeat) thread waits forever even though connect_timeout is specified.

We encountered this problem in the setup that log-forwarder fluentd sends data to another fluentd cluster under a level 4 (TCP) load balancer.
The load balancer accepts TCP connections, but the backend fluentd (which needs to handle TLS) is too busy and unstable to accept the connections. This caused the TCP connection to stay open and the forwarder to hang.

This fixes the problem by applying connect_timeout to TLS handshake.
To avoid breaking existing environments configured to use the short connect_timeout, this patch counts the TLS handshake time independently of the TCP connection time in this patch.

Docs Changes:
N/A

Release Note:
N/A

When out_forward plugin uses TLS transport, if the TLS handshake takes
a long time or hangs, the flusher (or event_loop for heartbeat) thread
waits forever even though connect_timeout is specified.

This fixes the problem by applying connect_timeout to TLS handshake.
To avoid breaking environments configured to use the short connect_timeout,
the TCP connection time is counted independently of the TLS handshake time.

Signed-off-by: Tomoki Sekiyama <tomoki.sekiyama@aktsk.jp>
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Good catch!

@ashie ashie merged commit c297456 into fluent:master Jan 14, 2022
@ashie
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ashie commented Jan 14, 2022

Merged. Thanks!

@ashie ashie added this to the v1.14.5 milestone Jan 21, 2022
kavirajk referenced this pull request in grafana/loki Oct 10, 2023
…10839)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [fluentd](https://www.fluentd.org/)
([source](https://github.com/fluent/fluentd)) | `'1.14.2'` ->
`'1.15.3'` |
[![age](https://developer.mend.io/api/mc/badges/age/rubygems/fluentd/1.15.3?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/rubygems/fluentd/1.15.3?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/rubygems/fluentd/'1.14.2'/1.15.3?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/rubygems/fluentd/'1.14.2'/1.15.3?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

### GitHub Vulnerability Alerts

####
[CVE-2022-39379](https://github.com/fluent/fluentd/security/advisories/GHSA-fppq-mj76-fpj2)

### Impact
A remote code execution (RCE) vulnerability in non-default
configurations of Fluentd allows unauthenticated attackers to execute
arbitrary code via specially crafted JSON payloads.

Fluentd setups are only affected if the environment variable
`FLUENT_OJ_OPTION_MODE` is explicitly set to `object`.

Please note: The option FLUENT_OJ_OPTION_MODE was introduced in Fluentd
version 1.13.2. Earlier versions of Fluentd are not affected by this
vulnerability.

### Patches
v1.15.3

### Workarounds
Do not use `FLUENT_OJ_OPTION_MODE=object`.

### References

* GHSL-2022-067

---

### Release Notes

<details>
<summary>fluent/fluentd (fluentd)</summary>

###
[`v1.15.3`](https://github.com/fluent/fluentd/blob/HEAD/CHANGELOG.md#Release-v1153---20221102)

[Compare
Source](https://github.com/fluent/fluentd/compare/v1.15.2...v1.15.3)

##### Bug Fix

-   Support glob for `!include` directive in YAML config format

[https://github.com/fluent/fluentd/pull/3917](https://github.com/fluent/fluentd/pull/3917)3917
-   Remove meaningless oj options

[https://github.com/fluent/fluentd/pull/3929](https://github.com/fluent/fluentd/pull/3929)3929
-   Fix log initializer to correctly create per-process files on Windows

[https://github.com/fluent/fluentd/pull/3939](https://github.com/fluent/fluentd/pull/3939)3939
-   out_file: Fix the multi-worker check with `<worker 0-N>` directive

[https://github.com/fluent/fluentd/pull/3942](https://github.com/fluent/fluentd/pull/3942)3942

##### Misc

-   Fix broken tests on Ruby 3.2

[https://github.com/fluent/fluentd/pull/3883](https://github.com/fluent/fluentd/pull/3883)3[https://github.com/fluent/fluentd/pull/3922](https://github.com/fluent/fluentd/pull/3922)ull/3922

###
[`v1.15.2`](https://github.com/fluent/fluentd/blob/HEAD/CHANGELOG.md#Release-v1152---20220822)

[Compare
Source](https://github.com/fluent/fluentd/compare/v1.15.1...v1.15.2)

##### Enhancement

-   Add a new system configuration `enable_jit`

[https://github.com/fluent/fluentd/pull/3857](https://github.com/fluent/fluentd/pull/3857)3857

##### Bug Fix

-   out_file: Fix append mode with `--daemon` flag

[https://github.com/fluent/fluentd/pull/3864](https://github.com/fluent/fluentd/pull/3864)3864
-   child_process: Plug file descriptor leak

[https://github.com/fluent/fluentd/pull/3844](https://github.com/fluent/fluentd/pull/3844)3844

##### Misc

-   Drop win32-api gem to support Ruby 3.2

[https://github.com/fluent/fluentd/pull/3849](https://github.com/fluent/fluentd/pull/3849)3[https://github.com/fluent/fluentd/pull/3866](https://github.com/fluent/fluentd/pull/3866)ull/3866

###
[`v1.15.1`](https://github.com/fluent/fluentd/blob/HEAD/CHANGELOG.md#Release-v1151---20220727)

[Compare
Source](https://github.com/fluent/fluentd/compare/v1.15.0...v1.15.1)

##### Bug Fix

-   Add support for concurrent append in out_file

[https://github.com/fluent/fluentd/pull/3808](https://github.com/fluent/fluentd/pull/3808)3808

##### Misc

-   in_tail: Show more information on skipping update_watcher

[https://github.com/fluent/fluentd/pull/3829](https://github.com/fluent/fluentd/pull/3829)3829

###
[`v1.15.0`](https://github.com/fluent/fluentd/blob/HEAD/CHANGELOG.md#Release-v1150---20220629)

[Compare
Source](https://github.com/fluent/fluentd/compare/v1.14.6...v1.15.0)

##### Enhancement

-   in_tail: Add log throttling in files based on group rules

[https://github.com/fluent/fluentd/pull/3535](https://github.com/fluent/fluentd/pull/3535)3[https://github.com/fluent/fluentd/pull/3771](https://github.com/fluent/fluentd/pull/3771)ull/3771
-   Add `dump` command to fluent-ctl

[https://github.com/fluent/fluentd/pull/3680](https://github.com/fluent/fluentd/pull/3680)3680
-   Handle YAML configuration format on configuration file

[https://github.com/fluent/fluentd/pull/3712](https://github.com/fluent/fluentd/pull/3712)3712
- Add `restart_worker_interval` parameter in `<system>` directive to set
interval to restart workers that has stopped for some
reas[https://github.com/fluent/fluentd/pull/3768](https://github.com/fluent/fluentd/pull/3768)ull/3768

##### Bug fixes

-   out_forward: Fix to update timeout of cached sockets

[https://github.com/fluent/fluentd/pull/3711](https://github.com/fluent/fluentd/pull/3711)3711
- in_tail: Fix a possible crash on file rotation when `follow_inodes
true`

[https://github.com/fluent/fluentd/pull/3754](https://github.com/fluent/fluentd/pull/3754)3754
-   output: Fix a possible crash of flush thread

[https://github.com/fluent/fluentd/pull/3755](https://github.com/fluent/fluentd/pull/3755)3755
-   in_tail: Fix crash bugs on Ruby 3.1 on Windows

[https://github.com/fluent/fluentd/pull/3766](https://github.com/fluent/fluentd/pull/3766)3766
- in_tail: Fix a bug that in_tail cannot open non-ascii path on Windows

[https://github.com/fluent/fluentd/pull/3774](https://github.com/fluent/fluentd/pull/3774)3774
- Fix a bug that fluentd doesn't release its own log file even after
rotated by
external
to[https://github.com/fluent/fluentd/pull/3782](https://github.com/fluent/fluentd/pull/3782)ull/3782

##### Misc

-   in_tail: Simplify TargetInfo related code

[https://github.com/fluent/fluentd/pull/3489](https://github.com/fluent/fluentd/pull/3489)3489
-   Fix a wrong issue number in CHANGELOG

[https://github.com/fluent/fluentd/pull/3700](https://github.com/fluent/fluentd/pull/3700)3700
-   server helper: Add comments to linger_timeout behavior about Windows

[https://github.com/fluent/fluentd/pull/3701](https://github.com/fluent/fluentd/pull/3701)3701
-   service_discovery: Fix typo

[https://github.com/fluent/fluentd/pull/3724](https://github.com/fluent/fluentd/pull/3724)3724
-   test: Fix unstable tests and warnings

[https://github.com/fluent/fluentd/pull/3745](https://github.com/fluent/fluentd/pull/3745)3[https://github.com/fluent/fluentd/pull/3753](https://github.com/fluent/fluentd/pull/3753)u[https://github.com/fluent/fluentd/pull/3767](https://github.com/fluent/fluentd/pull/3767)t[https://github.com/fluent/fluentd/pull/3783](https://github.com/fluent/fluentd/pull/3783)l[https://github.com/fluent/fluentd/pull/3784](https://github.com/fluent/fluentd/pull/3784)n[https://github.com/fluent/fluentd/pull/3785](https://github.com/fluent/fluentd/pull/3785)f[https://github.com/fluent/fluentd/pull/3787](https://github.com/fluent/fluentd/pull/3787)com/fluent/fluentd/pull/3787

###
[`v1.14.6`](https://github.com/fluent/fluentd/blob/HEAD/CHANGELOG.md#Release-v1146---20220331)

[Compare
Source](https://github.com/fluent/fluentd/compare/v1.14.5...v1.14.6)

##### Enhancement

-   Enable server plugins to specify socket-option `SO_LINGER`

[https://github.com/fluent/fluentd/pull/3644](https://github.com/fluent/fluentd/pull/3644)3644
-   Add `--umask` command line parameter

[https://github.com/fluent/fluentd/pull/3671](https://github.com/fluent/fluentd/pull/3671)3[https://github.com/fluent/fluentd/pull/3679](https://github.com/fluent/fluentd/pull/3679)ull/3679

##### Bug fixes

-   Fix metric name typo

[https://github.com/fluent/fluentd/pull/3630](https://github.com/fluent/fluentd/pull/3630)3[https://github.com/fluent/fluentd/pull/3673](https://github.com/fluent/fluentd/pull/3673)ull/3673
- Apply modifications in pipeline to the records being passed to
`@ERROR` label

[https://github.com/fluent/fluentd/pull/3631](https://github.com/fluent/fluentd/pull/3631)3631
-   Fix wrong calculation of retry interval

[https://github.com/fluent/fluentd/pull/3640](https://github.com/fluent/fluentd/pull/3640)3[https://github.com/fluent/fluentd/pull/3649](https://github.com/fluent/fluentd/pull/3649)u[https://github.com/fluent/fluentd/pull/3685](https://github.com/fluent/fluentd/pull/3685)t[https://github.com/fluent/fluentd/pull/3686](https://github.com/fluent/fluentd/pull/3686)luentd/pull/3686
-   Support IPv6 address for `rpc_endpoint` in `system` config

[https://github.com/fluent/fluentd/pull/3641](https://github.com/fluent/fluentd/pull/3641)3641

##### Misc

-   CI: Support Ruby 3.1 except Windows

[https://github.com/fluent/fluentd/pull/3619](https://github.com/fluent/fluentd/pull/3619)3619
-   Switch to GitHub Discussions

[https://github.com/fluent/fluentd/pull/3654](https://github.com/fluent/fluentd/pull/3654)3654
-   Fix CHANGELOG.md heading styles

[https://github.com/fluent/fluentd/pull/3648](https://github.com/fluent/fluentd/pull/3648)3648
-   Declare `null_value_pattern` as `regexp`

[https://github.com/fluent/fluentd/pull/3650](https://github.com/fluent/fluentd/pull/3650)3650

###
[`v1.14.5`](https://github.com/fluent/fluentd/blob/HEAD/CHANGELOG.md#Release-v1145---20220209)

[Compare
Source](https://github.com/fluent/fluentd/compare/v1.14.4...v1.14.5)

##### Enhancement

-   Add support for "application/x-ndjson" to `in_http`

[https://github.com/fluent/fluentd/pull/3616](https://github.com/fluent/fluentd/pull/3616)3616
-   Add support for ucrt binary for Windows

[https://github.com/fluent/fluentd/pull/3613](https://github.com/fluent/fluentd/pull/3613)3613

##### Bug fixes

-   Don't retry when `retry_max_times == 0`

[https://github.com/fluent/fluentd/pull/3608](https://github.com/fluent/fluentd/pull/3608)3608
-   Fix hang-up issue during TLS handshake in `out_forward`

[https://github.com/fluent/fluentd/pull/3601](https://github.com/fluent/fluentd/pull/3601)3601
-   Bump up required ServerEngine to v2.2.5

[https://github.com/fluent/fluentd/pull/3599](https://github.com/fluent/fluentd/pull/3599)3599
-   Fix "invalid byte sequence is replaced" warning on Kubernetes

[https://github.com/fluent/fluentd/pull/3596](https://github.com/fluent/fluentd/pull/3596)3596
- Fix "ArgumentError: unknown keyword: :logger" on Windows with Ruby 3.1

[https://github.com/fluent/fluentd/pull/3592](https://github.com/fluent/fluentd/pull/3592)3592

###
[`v1.14.4`](https://github.com/fluent/fluentd/blob/HEAD/CHANGELOG.md#Release-v1144---20220106)

[Compare
Source](https://github.com/fluent/fluentd/compare/v1.14.3...v1.14.4)

##### Enhancement

-   `in_tail`: Add option to skip long lines (`max_line_size`)

[https://github.com/fluent/fluentd/pull/3565](https://github.com/fluent/fluentd/pull/3565)3565

##### Bug fix

- Incorrect BufferChunkOverflowError when each event size is <
`chunk_limit_size`

[https://github.com/fluent/fluentd/pull/3560](https://github.com/fluent/fluentd/pull/3560)3560
- On macOS with Ruby 2.7/3.0, `out_file` fails to write events if
`append` is true.

[https://github.com/fluent/fluentd/pull/3579](https://github.com/fluent/fluentd/pull/3579)3579
-   test: Fix unstable test cases

[https://github.com/fluent/fluentd/pull/3574](https://github.com/fluent/fluentd/pull/3574)3[https://github.com/fluent/fluentd/pull/3577](https://github.com/fluent/fluentd/pull/3577)ull/3577

###
[`v1.14.3`](https://github.com/fluent/fluentd/blob/HEAD/CHANGELOG.md#Release-v1143---20211126)

[Compare
Source](https://github.com/fluent/fluentd/compare/v1.14.2...v1.14.3)

##### Enhancement

-   Changed to accept `http_parser.rb` 0.8.0.
    `http_parser.rb` 0.8.0 is ready for Ractor.

[https://github.com/fluent/fluentd/pull/3544](https://github.com/fluent/fluentd/pull/3544)3544

##### Bug fix

-   in_tail: Fixed a bug that no new logs are read when
    `enable_stat_watcher true` and `enable_watch_timer false` is set.

[https://github.com/fluent/fluentd/pull/3541](https://github.com/fluent/fluentd/pull/3541)3541
-   in_tail: Fixed a bug that the beginning and initial lines are lost
after startup when `read_from_head false` and path includes wildcard
'\*'.[https://github.com/fluent/fluentd/pull/3542](https://github.com/fluent/fluentd/pull/3542)/3542
-   Fixed a bug that processing messages were lost when
    BufferChunkOverflowError was thrown even though only a specific
message size exceeds
chunk_limi[https://github.com/fluent/fluentd/pull/3553](https://github.com/fluent/fluentd/pull/3553)t[https://github.com/fluent/fluentd/pull/3562](https://github.com/fluent/fluentd/pull/3562)luentd/pull/3562

##### Misc

-   Bump up required version of `win32-service` gem.
newer version is required to implement additional `fluent-ctl` commands.

[https://github.com/fluent/fluentd/pull/3556](https://github.com/fluent/fluentd/pull/3556)3556

</details>

---

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [fluentd](https://www.fluentd.org/)
([source](https://github.com/fluent/fluentd)) | `'1.14.2'` ->
`'1.15.3'` |
[![age](https://developer.mend.io/api/mc/badges/age/rubygems/fluentd/1.15.3?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/rubygems/fluentd/1.15.3?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/rubygems/fluentd/'1.14.2'/1.15.3?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/rubygems/fluentd/'1.14.2'/1.15.3?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

### GitHub Vulnerability Alerts

####
[CVE-2022-39379](https://github.com/fluent/fluentd/security/advisories/GHSA-fppq-mj76-fpj2)

### Impact
A remote code execution (RCE) vulnerability in non-default
configurations of Fluentd allows unauthenticated attackers to execute
arbitrary code via specially crafted JSON payloads.

Fluentd setups are only affected if the environment variable
`FLUENT_OJ_OPTION_MODE` is explicitly set to `object`.

Please note: The option FLUENT_OJ_OPTION_MODE was introduced in Fluentd
version 1.13.2. Earlier versions of Fluentd are not affected by this
vulnerability.

### Patches
v1.15.3

### Workarounds
Do not use `FLUENT_OJ_OPTION_MODE=object`.

### References

* GHSL-2022-067

---

### Release Notes

<details>
<summary>fluent/fluentd (fluentd)</summary>

###
[`v1.15.3`](https://github.com/fluent/fluentd/blob/HEAD/CHANGELOG.md#Release-v1153---20221102)

[Compare
Source](https://github.com/fluent/fluentd/compare/v1.15.2...v1.15.3)

##### Bug Fix

-   Support glob for `!include` directive in YAML config format

[https://github.com/fluent/fluentd/pull/3917](https://github.com/fluent/fluentd/pull/3917)3917
-   Remove meaningless oj options

[https://github.com/fluent/fluentd/pull/3929](https://github.com/fluent/fluentd/pull/3929)3929
-   Fix log initializer to correctly create per-process files on Windows

[https://github.com/fluent/fluentd/pull/3939](https://github.com/fluent/fluentd/pull/3939)3939
-   out_file: Fix the multi-worker check with `<worker 0-N>` directive

[https://github.com/fluent/fluentd/pull/3942](https://github.com/fluent/fluentd/pull/3942)3942

##### Misc

-   Fix broken tests on Ruby 3.2

[https://github.com/fluent/fluentd/pull/3883](https://github.com/fluent/fluentd/pull/3883)3[https://github.com/fluent/fluentd/pull/3922](https://github.com/fluent/fluentd/pull/3922)ull/3922

###
[`v1.15.2`](https://github.com/fluent/fluentd/blob/HEAD/CHANGELOG.md#Release-v1152---20220822)

[Compare
Source](https://github.com/fluent/fluentd/compare/v1.15.1...v1.15.2)

##### Enhancement

-   Add a new system configuration `enable_jit`

[https://github.com/fluent/fluentd/pull/3857](https://github.com/fluent/fluentd/pull/3857)3857

##### Bug Fix

-   out_file: Fix append mode with `--daemon` flag

[https://github.com/fluent/fluentd/pull/3864](https://github.com/fluent/fluentd/pull/3864)3864
-   child_process: Plug file descriptor leak

[https://github.com/fluent/fluentd/pull/3844](https://github.com/fluent/fluentd/pull/3844)3844

##### Misc

-   Drop win32-api gem to support Ruby 3.2

[https://github.com/fluent/fluentd/pull/3849](https://github.com/fluent/fluentd/pull/3849)3[https://github.com/fluent/fluentd/pull/3866](https://github.com/fluent/fluentd/pull/3866)ull/3866

###
[`v1.15.1`](https://github.com/fluent/fluentd/blob/HEAD/CHANGELOG.md#Release-v1151---20220727)

[Compare
Source](https://github.com/fluent/fluentd/compare/v1.15.0...v1.15.1)

##### Bug Fix

-   Add support for concurrent append in out_file

[https://github.com/fluent/fluentd/pull/3808](https://github.com/fluent/fluentd/pull/3808)3808

##### Misc

-   in_tail: Show more information on skipping update_watcher

[https://github.com/fluent/fluentd/pull/3829](https://github.com/fluent/fluentd/pull/3829)3829

###
[`v1.15.0`](https://github.com/fluent/fluentd/blob/HEAD/CHANGELOG.md#Release-v1150---20220629)

[Compare
Source](https://github.com/fluent/fluentd/compare/v1.14.6...v1.15.0)

##### Enhancement

-   in_tail: Add log throttling in files based on group rules

[https://github.com/fluent/fluentd/pull/3535](https://github.com/fluent/fluentd/pull/3535)3[https://github.com/fluent/fluentd/pull/3771](https://github.com/fluent/fluentd/pull/3771)ull/3771
-   Add `dump` command to fluent-ctl

[https://github.com/fluent/fluentd/pull/3680](https://github.com/fluent/fluentd/pull/3680)3680
-   Handle YAML configuration format on configuration file

[https://github.com/fluent/fluentd/pull/3712](https://github.com/fluent/fluentd/pull/3712)3712
- Add `restart_worker_interval` parameter in `<system>` directive to set
interval to restart workers that has stopped for some
reas[https://github.com/fluent/fluentd/pull/3768](https://github.com/fluent/fluentd/pull/3768)ull/3768

##### Bug fixes

-   out_forward: Fix to update timeout of cached sockets

[https://github.com/fluent/fluentd/pull/3711](https://github.com/fluent/fluentd/pull/3711)3711
- in_tail: Fix a possible crash on file rotation when `follow_inodes
true`

[https://github.com/fluent/fluentd/pull/3754](https://github.com/fluent/fluentd/pull/3754)3754
-   output: Fix a possible crash of flush thread

[https://github.com/fluent/fluentd/pull/3755](https://github.com/fluent/fluentd/pull/3755)3755
-   in_tail: Fix crash bugs on Ruby 3.1 on Windows

[https://github.com/fluent/fluentd/pull/3766](https://github.com/fluent/fluentd/pull/3766)3766
- in_tail: Fix a bug that in_tail cannot open non-ascii path on Windows

[https://github.com/fluent/fluentd/pull/3774](https://github.com/fluent/fluentd/pull/3774)3774
- Fix a bug that fluentd doesn't release its own log file even after
rotated by
external
to[https://github.com/fluent/fluentd/pull/3782](https://github.com/fluent/fluentd/pull/3782)ull/3782

##### Misc

-   in_tail: Simplify TargetInfo related code

[https://github.com/fluent/fluentd/pull/3489](https://github.com/fluent/fluentd/pull/3489)3489
-   Fix a wrong issue number in CHANGELOG

[https://github.com/fluent/fluentd/pull/3700](https://github.com/fluent/fluentd/pull/3700)3700
-   server helper: Add comments to linger_timeout behavior about Windows

[https://github.com/fluent/fluentd/pull/3701](https://github.com/fluent/fluentd/pull/3701)3701
-   service_discovery: Fix typo

[https://github.com/fluent/fluentd/pull/3724](https://github.com/fluent/fluentd/pull/3724)3724
-   test: Fix unstable tests and warnings

[https://github.com/fluent/fluentd/pull/3745](https://github.com/fluent/fluentd/pull/3745)3[https://github.com/fluent/fluentd/pull/3753](https://github.com/fluent/fluentd/pull/3753)u[https://github.com/fluent/fluentd/pull/3767](https://github.com/fluent/fluentd/pull/3767)t[https://github.com/fluent/fluentd/pull/3783](https://github.com/fluent/fluentd/pull/3783)l[https://github.com/fluent/fluentd/pull/3784](https://github.com/fluent/fluentd/pull/3784)n[https://github.com/fluent/fluentd/pull/3785](https://github.com/fluent/fluentd/pull/3785)f[https://github.com/fluent/fluentd/pull/3787](https://github.com/fluent/fluentd/pull/3787)com/fluent/fluentd/pull/3787

###
[`v1.14.6`](https://github.com/fluent/fluentd/blob/HEAD/CHANGELOG.md#Release-v1146---20220331)

[Compare
Source](https://github.com/fluent/fluentd/compare/v1.14.5...v1.14.6)

##### Enhancement

-   Enable server plugins to specify socket-option `SO_LINGER`

[https://github.com/fluent/fluentd/pull/3644](https://github.com/fluent/fluentd/pull/3644)3644
-   Add `--umask` command line parameter

[https://github.com/fluent/fluentd/pull/3671](https://github.com/fluent/fluentd/pull/3671)3[https://github.com/fluent/fluentd/pull/3679](https://github.com/fluent/fluentd/pull/3679)ull/3679

##### Bug fixes

-   Fix metric name typo

[https://github.com/fluent/fluentd/pull/3630](https://github.com/fluent/fluentd/pull/3630)3[https://github.com/fluent/fluentd/pull/3673](https://github.com/fluent/fluentd/pull/3673)ull/3673
- Apply modifications in pipeline to the records being passed to
`@ERROR` label

[https://github.com/fluent/fluentd/pull/3631](https://github.com/fluent/fluentd/pull/3631)3631
-   Fix wrong calculation of retry interval

[https://github.com/fluent/fluentd/pull/3640](https://github.com/fluent/fluentd/pull/3640)3[https://github.com/fluent/fluentd/pull/3649](https://github.com/fluent/fluentd/pull/3649)u[https://github.com/fluent/fluentd/pull/3685](https://github.com/fluent/fluentd/pull/3685)t[https://github.com/fluent/fluentd/pull/3686](https://github.com/fluent/fluentd/pull/3686)luentd/pull/3686
-   Support IPv6 address for `rpc_endpoint` in `system` config

[https://github.com/fluent/fluentd/pull/3641](https://github.com/fluent/fluentd/pull/3641)3641

##### Misc

-   CI: Support Ruby 3.1 except Windows

[https://github.com/fluent/fluentd/pull/3619](https://github.com/fluent/fluentd/pull/3619)3619
-   Switch to GitHub Discussions

[https://github.com/fluent/fluentd/pull/3654](https://github.com/fluent/fluentd/pull/3654)3654
-   Fix CHANGELOG.md heading styles

[https://github.com/fluent/fluentd/pull/3648](https://github.com/fluent/fluentd/pull/3648)3648
-   Declare `null_value_pattern` as `regexp`

[https://github.com/fluent/fluentd/pull/3650](https://github.com/fluent/fluentd/pull/3650)3650

###
[`v1.14.5`](https://github.com/fluent/fluentd/blob/HEAD/CHANGELOG.md#Release-v1145---20220209)

[Compare
Source](https://github.com/fluent/fluentd/compare/v1.14.4...v1.14.5)

##### Enhancement

-   Add support for "application/x-ndjson" to `in_http`

[https://github.com/fluent/fluentd/pull/3616](https://github.com/fluent/fluentd/pull/3616)3616
-   Add support for ucrt binary for Windows

[https://github.com/fluent/fluentd/pull/3613](https://github.com/fluent/fluentd/pull/3613)3613

##### Bug fixes

-   Don't retry when `retry_max_times == 0`

[https://github.com/fluent/fluentd/pull/3608](https://github.com/fluent/fluentd/pull/3608)3608
-   Fix hang-up issue during TLS handshake in `out_forward`

[https://github.com/fluent/fluentd/pull/3601](https://github.com/fluent/fluentd/pull/3601)3601
-   Bump up required ServerEngine to v2.2.5

[https://github.com/fluent/fluentd/pull/3599](https://github.com/fluent/fluentd/pull/3599)3599
-   Fix "invalid byte sequence is replaced" warning on Kubernetes

[https://github.com/fluent/fluentd/pull/3596](https://github.com/fluent/fluentd/pull/3596)3596
- Fix "ArgumentError: unknown keyword: :logger" on Windows with Ruby 3.1

[https://github.com/fluent/fluentd/pull/3592](https://github.com/fluent/fluentd/pull/3592)3592

###
[`v1.14.4`](https://github.com/fluent/fluentd/blob/HEAD/CHANGELOG.md#Release-v1144---20220106)

[Compare
Source](https://github.com/fluent/fluentd/compare/v1.14.3...v1.14.4)

##### Enhancement

-   `in_tail`: Add option to skip long lines (`max_line_size`)

[https://github.com/fluent/fluentd/pull/3565](https://github.com/fluent/fluentd/pull/3565)3565

##### Bug fix

- Incorrect BufferChunkOverflowError when each event size is <
`chunk_limit_size`

[https://github.com/fluent/fluentd/pull/3560](https://github.com/fluent/fluentd/pull/3560)3560
- On macOS with Ruby 2.7/3.0, `out_file` fails to write events if
`append` is true.

[https://github.com/fluent/fluentd/pull/3579](https://github.com/fluent/fluentd/pull/3579)3579
-   test: Fix unstable test cases

[https://github.com/fluent/fluentd/pull/3574](https://github.com/fluent/fluentd/pull/3574)3[https://github.com/fluent/fluentd/pull/3577](https://github.com/fluent/fluentd/pull/3577)ull/3577

###
[`v1.14.3`](https://github.com/fluent/fluentd/blob/HEAD/CHANGELOG.md#Release-v1143---20211126)

[Compare
Source](https://github.com/fluent/fluentd/compare/v1.14.2...v1.14.3)

##### Enhancement

-   Changed to accept `http_parser.rb` 0.8.0.
    `http_parser.rb` 0.8.0 is ready for Ractor.

[https://github.com/fluent/fluentd/pull/3544](https://github.com/fluent/fluentd/pull/3544)3544

##### Bug fix

-   in_tail: Fixed a bug that no new logs are read when
    `enable_stat_watcher true` and `enable_watch_timer false` is set.

[https://github.com/fluent/fluentd/pull/3541](https://github.com/fluent/fluentd/pull/3541)3541
-   in_tail: Fixed a bug that the beginning and initial lines are lost
after startup when `read_from_head false` and path includes wildcard
'\*'.[https://github.com/fluent/fluentd/pull/3542](https://github.com/fluent/fluentd/pull/3542)/3542
-   Fixed a bug that processing messages were lost when
    BufferChunkOverflowError was thrown even though only a specific
message size exceeds
chunk_limi[https://github.com/fluent/fluentd/pull/3553](https://github.com/fluent/fluentd/pull/3553)t[https://github.com/fluent/fluentd/pull/3562](https://github.com/fluent/fluentd/pull/3562)luentd/pull/3562

##### Misc

-   Bump up required version of `win32-service` gem.
newer version is required to implement additional `fluent-ctl` commands.

[https://github.com/fluent/fluentd/pull/3556](https://github.com/fluent/fluentd/pull/3556)3556

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