HttpPost headers don't work when added via environment variables

[petetnt]

In Kapacitor 1.5.*, The documentation mentions in multiple points that HTTPPost node headers could be set via enviroment variables. For example:

https://docs.influxdata.com/kapacitor/v1.5/event_handlers/post/#defining-configuration-options-with-environment-variables

The endpoint, url, and headers configuration options can be defined with environment variables:

KAPACITOR_HTTPPOST_0_ENDPOINT = "example"
KAPACITOR_HTTPPOST_0_URL = "http://example.com/path"
KAPACITOR_HTTPPOST_0_HEADERS_Example1 = "header1"
KAPACITOR_HTTPPOST_0_HEADERS_Example2 = "header2"

https://docs.influxdata.com/kapacitor/v1.5/event_handlers/post/#configuring-and-using-multiple-http-post-endpoints

Multiple HTTP POST endpoint configurations can also be added using environment variables. >
Variables values are grouped together using the number in each variable key.

KAPACITOR_HTTPPOST_0_ENDPOINT = "example0"
KAPACITOR_HTTPPOST_0_URL = "http://example-0.com/path"
KAPACITOR_HTTPPOST_0_HEADERS_Example1 = "header1"
KAPACITOR_HTTPPOST_0_HEADERS_Example2 = "header2"

KAPACITOR_HTTPPOST_1_ENDPOINT = "example1"
KAPACITOR_HTTPPOST_1_URL = "http://example-1.com/path"
KAPACITOR_HTTPPOST_1_HEADERS_Example1 = "header1"
KAPACITOR_HTTPPOST_1_HEADERS_Example2 = "header2"

and others. However from my experience it the headers won't get added though they have been as enviromentment variables while ENDPOINT AND URL work just fine.

Example:

KAPACITOR_HTTPPOST_0_ENDPOINT = "example0"
KAPACITOR_HTTPPOST_0_URL = "http://example-0.com/path"
KAPACITOR_HTTPPOST_0_HEADERS_Example1 = "header1"

TickScript:

|foo
   .httpPost()
   .endpoint('example0')

Excepted:

• Header "Example1" is added

Actual

• Header "Example1" is not added

Example 2:

Writing the header inline

KAPACITOR_HTTPPOST_0_ENDPOINT = "example0"
KAPACITOR_HTTPPOST_0_URL = "http://example-0.com/path"

TickScript:

|foo
   .httpPost()
   .header('Example1', 'header1')
   .endpoint('example0')

Excepted

• Header gets correctly added

Actual

• Header gets correctly added

Alternatives tried

• Also tried things like KAPACITOR_HTTPPOST_0_HEADERS_0_Example1 and similar but those work don't either.

[russorat]

@petetnt thanks for the issue. We will investigate if something was broken here.

[kramik1]

I am running into this as well. I am trying to setup kapacitor in k8. I dumped the config that is in the container to see what it has set. The basic-auth settings might shine some light on the proper env variables. I tried KAPACITOR_HTTPPOST_0_BASIC_AUTH_Password and KAPACITOR_HTTPPOST_0_HEADERS_Accept so far.

[[httppost]]
....
[httppost.basic-auth]
username = ""
password = ""

I also tried KAPACITOR_HTTPPOST_0_HTTPPOST_BASIC_AUTH_USERNAME without success.

[kramik1]

OK, so kind of stupid on my part. But reading the toml docs (https://toml.io/en/v1.0.0#inline-table) made it super clear.
Inline tables are only short hand for a new document section. So KAPACITOR_HTTPPOST_0_BASIC_AUTH_PASSWORD works. I am using a configmap for the conf file so that I do not have so many environmental variables and pulling the basic-auth password from a secret. I double checked doing the same for additional headers and I do not see them in the runtime configuration. So the above poster still has his original problem.

[docmerlin]

closed by: #2653