Windows executable missing gelf output

[jacekmackiewicz]

Bug Report

Describe the bug
Tried using gelf output on Windows but receiving 'gelf cannot be loaded'.

To Reproduce
Follow instructions in docs:
https://docs.fluentbit.io/manual/installation/windows
Add gelf output described in docs:
https://docs.fluentbit.io/manual/pipeline/outputs/gelf

Expected behavior
Agent starts sending logs to Graylog gelf input.

Screenshots
`Fluent Bit v1.5.6

• Copyright (C) 2019-2020 The Fluent Bit Authors
• Copyright (C) 2015-2018 Treasure Data
• Fluent Bit is a CNCF sub-project under the umbrella of Fluentd
• https://fluentbit.io

Output plugin 'gelf' cannot be loaded
Error: You must specify an output target. Aborting`

Your Environment

• Version used: 1.5.6 also tried few older versions, checked down to 1.3.8.
• Configuration:
  `[SERVICE]
  flush 5
  daemon Off
  log_level info
  parsers_file parsers.conf
  plugins_file plugins.conf
  http_server Off
  http_listen 0.0.0.0
  http_port 2020
  storage.metrics on

[INPUT]
Name tail
Path c:\ProgramData\Docker\containers\\-json.log
Refresh_Interval 5
Ignore_Older 10s
Rotate_Wait 5
DB c:\DB\logs.db

[OUTPUT]
Name gelf
Match *
Host
Port 12201
Mode tcp
Gelf_Short_Message_Key log`

• Environment name and version: Windows local development
• Operating System and version: Windows 10 2004
• Filters and plugins: gelf plugin

[jacekmackiewicz]

.\fluent-bit.exe -h doesn't show gelf in Outputs :(

[fujimotos]

.\fluent-bit.exe -h doesn't show gelf in Outputs :(

@jacekmackiewicz This is because we have not ported out_gelf to Windows yet.

I'm currently looking at the code, and it seems that we need to clean up a few things
to get it compilable on Windows...

[jacekmackiewicz]

Ok, in the meantime I'm looking into http output and it seems to be working fine. Just not sure yet if it's a good workaround.

[OUTPUT]
Name http
Match *
Host
Port 12201
URI /gelf
Format gelf
Gelf_host_key stream
Gelf_short_message_key log

[fujimotos]

Ok, in the meantime I'm looking into http output and it seems to be working fine. Just not sure yet if it's a good workaround.

@jacekmackiewicz It is OK. the HTTP plugin also supports Graylog format.
out_gelf has some additional feature (like sending packets via UDP), but
the basic functionality is same.

By the way, I am currently working on the Windows port of out_gelf. I'll
post update here once I've finished the porting.

[fujimotos]

OK. Now the Windows port patch has been land on the main line.

You will see the GELF plugin enabled on Windows builds since the
next major release.

As such, I close this issue as resolved.