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Support mTLS in gRPC exporters #927

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merged 5 commits into from
May 8, 2020

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pavolloffay
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Description:

Support mutual TLS in gRPC exporters.

Other notable changes:

  • TLS config moved to a separate struct
  • go field CertPemFile renamed to CaCert, the config property wasn't changed.

Link to tracking Issue:

Testing: < Describe what testing was performed and which tests were added.>

Documentation: < Describe the documentation added.>

Signed-off-by: Pavol Loffay <ploffay@redhat.com>
Signed-off-by: Pavol Loffay <ploffay@redhat.com>
Signed-off-by: Pavol Loffay <ploffay@redhat.com>
Signed-off-by: Pavol Loffay <ploffay@redhat.com>
type TLSConfig struct {
// Root CA certificate file for TLS credentials of gRPC client. Should
// only be used if `secure` is set to true.
CaCert string `mapstructure:"cert_pem_file"`
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The config property name hasn't been changed.

Can we make a breaking change and change it to include ca in name? e.g ca_cert_pem_file? Or just ca_cert?

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We can probably do that in a separate PR.

This is a breaking change when it comes to the code (not configuration) so you will need to followup with a PR in the collector-contrib where you update otel version (using make, see the rule there) and update all the code. Also need to make a quick announcement on the gitter, so if there are others who depend on this they know about this change.

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@dmitryax updated OTEL collector in the contrib in PR https://github.com/open-telemetry/opentelemetry-collector-contrib/pull/220/files#diff-993db3ecf423549b9fcb5b7e4d195efeR10.

That corresponds to 80ee563 that landed to master after this PR.

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@bogdandrutu ping me if there is anything I can do more. The refactoring/unifying of the TLS spec will be done in #933

type TLSConfig struct {
// Root CA certificate file for TLS credentials of gRPC client. Should
// only be used if `secure` is set to true.
CaCert string `mapstructure:"cert_pem_file"`
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We can probably do that in a separate PR.

This is a breaking change when it comes to the code (not configuration) so you will need to followup with a PR in the collector-contrib where you update otel version (using make, see the rule there) and update all the code. Also need to make a quick announcement on the gitter, so if there are others who depend on this they know about this change.

@@ -110,3 +125,56 @@ func GrpcSettingsToDialOptions(settings GRPCSettings) ([]grpc.DialOption, error)

return opts, nil
}

// Config loads TLS certificates and returns a TLS Config.
func (c TLSConfig) Config() (*tls.Config, error) {
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Maybe LoadConfig? or ToCryptoTlsConfig

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I like more load as it really loads it.

Signed-off-by: Pavol Loffay <ploffay@redhat.com>
@pavolloffay
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@bogdandrutu PR updated. Once this is merged I will open a PR to the contrib to update the code there and announce on the gitter channel.

@@ -62,6 +57,26 @@ type GRPCSettings struct {
WaitForReady bool `mapstructure:"wait_for_ready"`
}

// TLSConfig exposes client TLS configuration.
type TLSConfig struct {
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QQ: should this be moved in a package configtls in order to be shared with other protocols that support tls?

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Also I feel that we are inconsistent between calling the structs settings vs config. May be done in a separate PR

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+1 to this request - I'm working on adding mTLS for receivers/exporters that use HTTP.

@ccaraman
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ccaraman commented May 8, 2020

One structural question - There are TLS config options under https://github.com/open-telemetry/opentelemetry-collector/blob/master/receiver/securereceiverconfig.go Should all TLS option then fall under config/...

@jrcamp jrcamp mentioned this pull request May 8, 2020
@bogdandrutu
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Going to merge this since we have a separate issue to track the merging of configs. #933

@bogdandrutu bogdandrutu merged commit 7956aa7 into open-telemetry:master May 8, 2020
@flands flands added this to the Beta 0.4 milestone Jun 4, 2020
wyTrivail pushed a commit to mxiamxia/opentelemetry-collector that referenced this pull request Jul 13, 2020
* Support mTLS in gRPC exporters

Signed-off-by: Pavol Loffay <ploffay@redhat.com>

* Rename to CaCert

Signed-off-by: Pavol Loffay <ploffay@redhat.com>

* Add tests

Signed-off-by: Pavol Loffay <ploffay@redhat.com>

* Fix lint

Signed-off-by: Pavol Loffay <ploffay@redhat.com>

* rename load func

Signed-off-by: Pavol Loffay <ploffay@redhat.com>
Troels51 pushed a commit to Troels51/opentelemetry-collector that referenced this pull request Jul 5, 2024
swiatekm pushed a commit to swiatekm/opentelemetry-collector that referenced this pull request Oct 9, 2024
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4 participants