when i use:

<system>
  workers 4
</system>

[error]: config error file="/fluentd/etc/fluent.conf" error_class=Fluent::ConfigError error="Plugin 'buffered_slack' does not support multi workers configuration (Fluent::SlackOutput)"

In our production environment, to_json errors have occurred after updating td-agent v2.3.5.

2017-05-16 17:20:23 +0900 [error]: plugin/out_slack.rb:231:rescue in write: out_slack: error="\"\\xE3\" from ASCII-8BIT to UTF-8" error_class="Encoding::UndefinedConversionError"

This error is when fluent-plugin-slack to_json the output of fluent-plugin-rds-slowlog (v0.7.0).
Specifically, in-rds-slowlog outputs ASCII-8BIT encoded character string, but out_slack's to_json expects UTF-8 encoded character string, so it is an error.

• ref. kenjiskywalker/fluent-plugin-rds-slowlog#17

Since the same thing can happen besides in-rds-slowlog, I want to use Yajl instead of JSON, because to_json method raise error when receive multibyte text.

• ref. awslabs/aws-fluent-plugin-kinesis#22

How about that? If so, I will make a PR.

I have installed the slack plugin. When checked with "gem list", it shows "fluent-plugin-slack (0.6.7)". And when i started fluentd, it shows "config error file="/etc/td-agent/td-agent.conf" error_class=Fluent::ConfigError error="Unknown output plugin 'slack'. Run 'gem search -rd fluent-plugin' to find plugins". It seems the plugin does not install, why?

How to split it to individual events ?
I m using labels to route from fluentd source to slack output,
Using buffered parameters :

chunk_limit_size 1k
chunk_limit_records 1
flush_interval 1s

How to convert them to single message with one event ?
Also the message is not getting truncated.

Any help ?

Thank you for the awesome slack plugin. I am trying to post a slack attachment message with multiple fields but i unable to achieve it. I am only able to create single field per msg using the following configuration

<match kube.**>
      @type slack
      webhook_url "#{ENV['SLACK_WEBHOOK_URL']}"
      channel "#{ENV['SLACK_CHANNEL']}"
      username fluentd
      message %s
      message_keys log
      title Pod: %s
      title_keys kube_tag
      icon_emoji :ghost:
      flush_interval 1s
      mrkdwn true
      color danger
</match>

I would like to add other fields as well but not able to figure out how can we achieve it.

I try to send logs to my slack team using this but it won't send any logs.

2015-05-14 21:18:04 +0900 [info]: out_slack: post_message {:channel=>"#logs", :text=>"oijwef\n", :mrkdwn=>true, :link_names=>true}
2015-05-14 21:18:04 +0900 [warn]: temporarily failed to flush the buffer. next_retry=2015-05-14 21:20:03 +0900 error_class="NameError" error="uninitialized constant Net::OpenTimeout" instance=70183716234940
  2015-05-14 21:18:04 +0900 [warn]: /usr/lib64/fluent/ruby/lib/ruby/gems/1.9.1/gems/fluent-plugin-slack-0.6.0/lib/fluent/plugin/out_slack.rb:131:in `rescue in write'
  2015-05-14 21:18:04 +0900 [warn]: /usr/lib64/fluent/ruby/lib/ruby/gems/1.9.1/gems/fluent-plugin-slack-0.6.0/lib/fluent/plugin/out_slack.rb:128:in `write'
  2015-05-14 21:18:04 +0900 [warn]: /usr/lib64/fluent/ruby/lib/ruby/gems/1.9.1/gems/fluentd-0.10.55/lib/fluent/buffer.rb:296:in `write_chunk'
  2015-05-14 21:18:04 +0900 [warn]: /usr/lib64/fluent/ruby/lib/ruby/gems/1.9.1/gems/fluentd-0.10.55/lib/fluent/buffer.rb:276:in `pop'
  2015-05-14 21:18:04 +0900 [warn]: /usr/lib64/fluent/ruby/lib/ruby/gems/1.9.1/gems/fluentd-0.10.55/lib/fluent/output.rb:311:in `try_flush'
  2015-05-14 21:18:04 +0900 [warn]: /usr/lib64/fluent/ruby/lib/ruby/gems/1.9.1/gems/fluentd-0.10.55/lib/fluent/output.rb:132:in `run'
2015-05-14 21:18:06 +0900 applicationlog.testtest: {"message":"oijwef"}

my config

<match applicationlog.testtest>
type copy
<store>
  type stdout
</store>
<store>
  type slack
  webhook_url http://hooks.slack.com/services/xxxxxx/xxxxx/xxxxxxxxx
  channel logs
  flush_interval 1s
</store>
</match>

After using "fluent-gem install fluent-plugin-slack" to install slack plugin, when start td-agent.service, failed due to config error file="/etc/td-agent/td-agent.conf" error_class=Fluent::ConfigError error="Unknown output plugin 'slack'. Run 'gem search -rd fluent-plugin' to find plugins". It's seems strange.

📝

In c5b7158 code was added to escape <, >, and & per Slack's formatting Docs. However, by escaping these values across the board, formatted links like the following no longer work: <https://google.com|My Link>

cache/flu/fluent-plugin-slack-0.6.7/lib/fluent/plugin/out_buffered_slack.rb -> lib/fluent/plugin/out_slack.rb

It needs to be relative to the current path.

Hi there,

I have the following use case:

• in my fluentd config I'm splitting logs into error and performance channels (tags)
• so I want to apply different slack icons/usernames per each slack plugin (Now it's impossible because slack plugin caches the common config and icon_emoji/username options are part of it)

The examples seem to show how to receive messages from Slack, rather than sending to Slack. I'm not sure why anyone would want the former. I tried to get it working but failed. I've documented the issue here: https://serverfault.com/questions/1160392/how-can-i-resolve-fluentd-plugin-slack-error-when-starting-fluentd-daemon-undef

It would be awesome if someone could help me get this working, or post some examples of sending to Slack to the README. I tried getting help on the Slack server for Fluent but no-one bit.

Support to read color from record specified by color_key
then we can color messages for example for different log levels, ...

Running into an issue with the posted value data not actually honouring line breaks.

From the log:
out_slack: post_message {:attachments=>[{:fallback=>"Log:logs.one.one-api.err.err.log Host:one-prod-ip-10-0-7-52", :fields=>[{:title=>"Log:logs.foo.foo-api.err.err.log Host:foo-prod-ip-10-0-7-52", :value=>"Error: Invalid LocationID \nStatus Code: 404\nType: notFoundError\n"}], :color=>"danger", :mrkdwn_in=>["text", "fields"]}], :channel=>"#jenkins", :username=>"fluentd", :icon_emoji=>":ghost:", :mrkdwn=>true, :link_names=>true}

I am new to fluentd, is there a trick to adding line breaks?
This is what was posted into slack:
Log:logs.foo.foo-api.err.err.log Host:foo-prod-ip-10-0-7-52
Error: Invalid LocationID \nStatus Code: 404\nType: notFoundError
I did try <br> as well, and that just posted <br> into the slack channel.

I am using the webhooks implementation for this.
Any suggestions?

An incoming-webhook has to be created for a given channel; forcing users to provide a channel through configuration in that case, makes the plugin unusable if you want to send logs to a private channel.

@sowawa Could you turn on travis and put a badge to it on README.md?

I'm trying to use your slack plugin, but the logs generated by my docker engine seem to be formatted as a json with a log entry instead of a message one.

I'm using docker 1.9.1 (API version 1.21), fluentd 0.12.22 and fluent-plugin-slack (0.6.2). My fluentd configuration is:

<match slack.*>
  type slack
  webhook_url  https://hooks.slack.com/services/x/y/z
  channel monitoring
  username microservices
  icon_emoji :ghost:
  flush_interval 60s
</match>

And after trying a docker run -d --log-driver=fluentd --log-opt fluentd-tag="slack.test" alpine echo "hello", I obtain the next warning from fluentd:

2016-05-03 14:30:17 +0000 [warn]: out_slack: the specified key 'message' not found in record. [{"container_id"=>"7e4dde134cc57379c0a924b8c5ad3f5b463d5d490ca2061561a6261e98da4c34", "container_name"=>"/goofy_babbage", "source"=>"stdout", "log"=>"hello", "time"=>"14:29:35", "tag"=>"slack.test"}]
2016-05-03 14:30:17 +0000 [info]: out_slack: post_message {:channel=>"#devops", :text=>"\n", :username=>"ecs", :icon_emoji=>":ghost:", :mrkdwn=>true, :link_names=>true}

Any idea?

/dev/null is explicitly used here: https://github.com/sowawa/fluent-plugin-slack/blob/master/lib/fluent/plugin/slack_client.rb#L32

That makes it impossible to use this plugin on windows. Do you think it could be changed?

I have recently come to this issue, which is still a problem. My messages are truncated even after not that many characters roughly 2k. Any idea how to solve that?

This issue describes a loadmap to v2.

Once release v1 (nothing is changed with v0.xx) to do semantic versioning, then work for v2.

Breaking changes:

1. To fix #28, revert escaping special characters in message.
2. By historical reasons, default values of some parameters are different with Slack API default values. Align with Slack API default values.
3. Allow adding arbitrary slack parameters
4. Migrate to Fluentd v0.14 (v1) API.

Allow adding arbitrary slack parameters

Slack API itself evolves, and will support new parameters. I want to support new parameters without updating slack plugin.

Maybe we can achieve by changing interfaces as:

<match slack>
  @type slack
  webhook_url https://hooks.slack.com/services/XXX/XXX/XXX
  <payload>
    channel general
    username sonots
    # arbitrary key=val parameters can be added
  </payload>
</match>

If we support only Fluentd >= v0.14.20, users can get dynamic values from nested records via record accessor as:

ref. https://www.fluentd.org/blog/fluentd-v0.14.20-has-been-released

<match slack>
  @type slack
  webhook_url https://hooks.slack.com/services/XXX/XXX/XXX
  <payload>
    channel $.foo.channel
    username $["username"]
    # arbitrary key=val parameters can be added
  </payload>
</match>

TODO: Test whether we can write ruby codes combined with record accessor as #{$.text..gsub(/&/, '&amp;').gsub(/</, '&lt;').gsub(/>/, '&gt;')} (hmm, looks not possible) so that users can write their own escaping function by themselves to support #22.

TODO: Think how to support nested parameters. Create config_section dynamically?

payload
  channel
  username
  attachments
     blah blah

Hi there. ☀️
Parameter messege_keys seems not to be accepted nested value, right?
I want to send the nested value such as fabric8io/fluent-plugin-kubernetes_metadata_filter plugin attaching nested output (like $.kubernetes.pod_name).

fluent-plugin-rewrite-tag-filter supports this
https://github.com/fluent/fluent-plugin-rewrite-tag-filter#nested-attributes

btw record_accessor seems to require v0.14.20...

What do you think of this?

🍴