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add env var JAEGER_DISABLED #1285

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merged 3 commits into from
Nov 10, 2020

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sschne
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@sschne sschne commented Oct 31, 2020

Adds option to set the environment variable JAEGER_DISABLED to query or all-in-one deployment.

Closes: #1148

Signed-off-by: Simon Schneider [email protected]

Signed-off-by: Simon Schneider <[email protected]>
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codecov bot commented Oct 31, 2020

Codecov Report

Merging #1285 (67a11d6) into master (c418931) will increase coverage by 0.03%.
The diff coverage is 100.00%.

Impacted file tree graph

@@            Coverage Diff             @@
##           master    #1285      +/-   ##
==========================================
+ Coverage   87.32%   87.36%   +0.03%     
==========================================
  Files          89       89              
  Lines        4947     4970      +23     
==========================================
+ Hits         4320     4342      +22     
- Misses        464      465       +1     
  Partials      163      163              
Impacted Files Coverage Δ
pkg/apis/jaegertracing/v1/jaeger_types.go 100.00% <ø> (ø)
pkg/deployment/all_in_one.go 100.00% <100.00%> (ø)
pkg/deployment/query.go 100.00% <100.00%> (ø)
pkg/strategy/production.go 97.10% <100.00%> (+0.08%) ⬆️
pkg/strategy/streaming.go 96.99% <100.00%> (+0.04%) ⬆️
pkg/controller/jaeger/jaeger_controller.go 36.87% <0.00%> (+1.23%) ⬆️

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As well as adding theJAEGER_DISABLED flag, it would be good to avoid injecting the agent with the query service.

// JaegerDisabled adds the JAEGER_DISABLED environment flag to the
// query component to prevent it from adding its own traces.
// The default, if ommited, is false
JaegerDisabled *bool `json:"jaegerDisabled,omitempty"`
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Would it be better calling it tracingEnabled - with a default of true?

// JaegerDisabled adds the JAEGER_DISABLED environment flag to the
// query component to prevent it from adding its own traces.
// The default, if ommited, is false
JaegerDisabled *bool `json:"jaegerDisabled,omitempty"`
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Same here.

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sschne commented Nov 8, 2020

As well as adding theJAEGER_DISABLED flag, it would be good to avoid injecting the agent with the query service.

Where should this be implemented? Directly in inject.Sidecar()?

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@sschne Just don't include the sidecar.jaegertracing.io/inject annotation in the query and all-in-one deployments.

@mergify mergify bot requested a review from jpkrohling November 9, 2020 20:37
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sschne commented Nov 9, 2020

@objectiser thanks for the hint, but that was not enough. The Strategy would inject the sidecar regardless of the annotation, so there is will be a race between the Strategy and namespace controller. Now i also prevented the strategy from injecting the sidecar.

queryDep := inject.Sidecar(jaeger, inject.OAuthProxy(jaeger, query.Get()))
queryDep := inject.OAuthProxy(jaeger, query.Get())
if jaeger.Spec.Query.TracingEnabled == nil || *jaeger.Spec.Query.TracingEnabled == true {
queryDep = inject.Sidecar(jaeger, queryDep)
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@jpkrohling should it be necessary to explicitly add the sidecar if the annotation has been defined? If so, what is the purpose of adding the annotation?

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We can then avoid the query deployment from being created without the sidecar, only to get the sidecar injected on the next reconciliation for the Deployment resource.

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Thanks @sschne

@mergify mergify bot merged commit 1c1e75d into jaegertracing:master Nov 10, 2020
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Jaeger operator: set env var JAEGER_DISABLED
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