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[1.15.x] Update upgrade-specific.mdx #19063

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Oct 4, 2023
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[1.15.x] Update upgrade-specific.mdx #19063

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20 changes: 19 additions & 1 deletion website/content/docs/upgrading/upgrade-specific.mdx
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Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,7 @@ upgrade flow.
#### Service mesh compatibility ((#service-mesh-compatibility-1-15))

Upgrade to **Consul version 1.15.2 or later**.
If using [Vault Enterprise as CA](#vault-enterprise-as-ca-1-15), **avoid Consul version 1.15.6**.

Consul versions 1.15.0 - 1.15.1 contain a race condition that can cause
some service instances to lose their ability to communicate in the mesh after
Expand All @@ -27,6 +28,15 @@ due to a problem with leaf certificate rotation.

This bug is fixed in Consul versions 1.15.2 and newer.

#### Vault Enterprise as CA ((#vault-enterprise-as-ca-1-15))
Using Vault as CA with Consul version 1.15.6 will fail to initialize the CA if [`namespace`](/consul/docs/connect/ca/vault#namespace) is set
but [`intermediate_pki_namespace`](/consul/docs/connect/ca/vault#intermediatepkinamespace) or [`root_pki_namespace`](/consul/docs/connect/ca/vault#rootpkinamespace)
are empty. This is a bug which will be fixed in a future version.

To work around this issue, users must explicitly set [`intermediate_pki_namespace`](/consul/docs/connect/ca/vault#intermediatepkinamespace) and
[`root_pki_namespace`](/consul/docs/connect/ca/vault#rootpkinamespace) to the same value as [`namespace`](/consul/docs/connect/ca/vault#namespace).
Set your configuration by calling [set-config](/consul/commands/connect/ca#set-config) then use [get-config](/consul/commands/connect/ca#get-config) to check.

#### Removing configuration options

The `connect.enable_serverless_plugin` configuration option was removed. Lambda integration is now enabled by default.
Expand Down Expand Up @@ -134,7 +144,7 @@ In Consul v1.15 and higher:
UpstreamConfig = {
Overrides = [
{
Name = foo # Applies to local service `foo`
Name = foo # Applies to local service `foo`
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Someone is using a linter ;)

},
{
Name = foo # Applies to `foo` imported from peered cluster `bar`
Expand Down Expand Up @@ -168,6 +178,14 @@ to use TLS for contacting the HTTP API, it will also incorrectly enable TLS for
Users should not upgrade to 1.14.0 if they are using plaintext gRPC connections in
conjunction with TLS-encrypted HTTP APIs.

#### Vault Enterprise as CA ((#vault-enterprise-as-ca-1-14))
Using Vault as CA with Consul version 1.14.10 will fail to initialize the CA if [`namespace`](/consul/docs/connect/ca/vault#namespace) is set
but [`intermediate_pki_namespace`](/consul/docs/connect/ca/vault#intermediatepkinamespace) or [`root_pki_namespace`](/consul/docs/connect/ca/vault#rootpkinamespace)
are empty. This is a bug which will be fixed in a future version.

To work around this issue, users must explicitly set [`intermediate_pki_namespace`](/consul/docs/connect/ca/vault#intermediatepkinamespace) and
[`root_pki_namespace`](/consul/docs/connect/ca/vault#rootpkinamespace) to the same value as [`namespace`](/consul/docs/connect/ca/vault#namespace).
Set your configuration by calling [set-config](/consul/commands/connect/ca#set-config) then use [get-config](/consul/commands/connect/ca#get-config) to check.

#### Changes to gRPC TLS configuration

Expand Down
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