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docs: Update Kubernetes YAML examples in UI visualization (#12419) 

* Update Kubernetes related YAML config examples to document supported
syntax in the latest version of the Helm chart.
* Fix syntax in JSON example configs.

Resolves #12403

Co-authored-by: mrspanishviking <kcardenas@hashicorp.com>
This commit is contained in:
Blake Covarrubias 2022-03-03 21:31:57 -08:00 committed by GitHub
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191
website/content/docs/connect/observability/ui-visualization.mdx
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@ -66,7 +66,9 @@ service named `prometheus-server` so each Consul agent can reach it on
A full configuration to enable Prometheus is given below.
<CodeTabs>
<CodeTabs heading="UI metrics configuration" tabs={[ "HCL", "Kubernetes YAML", "JSON" ]}>
<CodeBlockConfig filename="agent-config.hcl">
```hcl
ui_config {
@ -78,25 +80,40 @@ ui_config {
}
```
</CodeBlockConfig>
<CodeBlockConfig filename="helm-values.yaml">
```yaml
ui:
enabled: true
metrics:
enabled: true # by default, this inherits from the value global.metrics.enabled
provider: "prometheus"
baseURL: http://prometheus-server
```
</CodeBlockConfig>
<CodeBlockConfig filename="agent-config.json">
```json
{
"ui_config": [
{
"enabled": true,
"metrics_provider": "prometheus",
"metrics_proxy": [
{
"base_url": "http://prometheus-server"
}
]
"ui_config": {
"enabled": true,
"metrics_provider": "prometheus",
"metrics_proxy": {
"base_url": "http://prometheus-server"
}
]
}
}
```
</CodeBlockConfig>
</CodeTabs>
Similarly, to configure the UI on Kubernetes, use this [reference](/docs/k8s/connect/observability/metrics).
-> **Note**: For more information on configuring the observability UI on Kubernetes, use this [reference](/docs/k8s/connect/observability/metrics).
## Configuring Dashboard URLs
@ -115,9 +132,9 @@ to the relevant information.
An example with Grafana is shown below.
<CodeTabs tabs={[ "HCL", "JSON", "YAML (Kubernetes)" ]}>
<CodeTabs heading="Example dashboard URL template configuration for UI visualization" tabs={[ "HCL", "Kubernetes YAML", "JSON" ]}>
<CodeBlockConfig>
<CodeBlockConfig filename="agent-config.hcl">
```hcl
ui_config {
@ -130,31 +147,19 @@ ui_config {
</CodeBlockConfig>
<CodeBlockConfig>
```json
{
"ui_config": [
{
"dashboard_url_templates": [
{
"service": "https://grafana.example.com/d/lDlaj-NGz/service-overview?orgId=1\u0026var-service={{Service.Name}}\u0026var-namespace={{Service.Namespace}}\u0026var-partition={{Service.Partition}}\u0026var-dc={{Datacenter}}"
}
],
"enabled": true
}
]
}
```
</CodeBlockConfig>
<CodeBlockConfig>
<CodeBlockConfig filename="helm-values.yaml">
```yaml
# The UI is enabled by default so this stanza is not required.
ui:
enabled: true
# This configuration requires version 0.40.0 or later of the Helm chart.
dashboardURLTemplates:
service: "https://grafana.example.com/d/lDlaj-NGz/service-overview?orgId=1&var-service={{Service.Name}}&var-namespace={{Service.Namespace}}&var-dc={{Datacenter}}"
# If you are using a version of the Helm chart older than 0.40.0, you must
# configure the dashboard URL template using the `server.extraConfig` parameter
# in the Helm chart's values file.
server:
extraConfig: |
{
@ -168,11 +173,26 @@ server:
</CodeBlockConfig>
<CodeBlockConfig filename="agent-config.json">
```json
{
"ui_config": {
"enabled": true,
"dashboard_url_templates": {
"service": "https://grafana.example.com/d/lDlaj-NGz/service-overview?orgId=1\u0026var-service={{Service.Name}}\u0026var-namespace={{Service.Namespace}}\u0026var-partition={{Service.Partition}}\u0026var-dc={{Datacenter}}"
}
}
}
```
</CodeBlockConfig>
</CodeTabs>
~> **Note**: On Kubernetes, Consul Server configuration is set in your Helm
config via the [`server.extraConfig`](/docs/k8s/helm#v-server-extraconfig) key as JSON.
The `{{` characters in the URL must be escaped using `{{ "{{" }}` so that Helm
~> **Note**: On Kubernetes, the Consul Server configuration set in the Helm config's
[`server.extraConfig`](/docs/k8s/helm#v-server-extraconfig) key must be specified
as JSON. The `{{` characters in the URL must be escaped using `{{ "{{" }}` so that Helm
doesn't try to template them.
![Consul UI Service Dashboard Link](/img/ui-dashboard-url-template.png)
@ -206,18 +226,42 @@ un-authenticated workloads on the network**.
With ACLs enabled, the proxy endpoint requires a valid token with read access
to all nodes and services (across all namespaces in Enterprise):
<CodeTabs>
<Tabs>
<Tab heading="Consul OSS">
<CodeTabs heading="Example policy granting read-only access to all services and nodes">
```hcl
# Consul OSS
service_prefix "" {
policy = "read"
}
node_prefix "" {
policy = "read"
}
```
# Consul Enterprise
```json
{
"service_prefix": {
"": {
"policy": "read"
}
},
"node_prefix": {
"": {
"policy": "read"
}
}
}
```
</CodeTabs>
</Tab>
<Tab heading="Consul Enterprise">
<CodeTabs heading="Example policy granting read-only access to all services and nodes across all namespaces">
```hcl
namespace_prefix "" {
service_prefix "" {
policy = "read"
@ -228,8 +272,30 @@ namespace_prefix "" {
}
```
```json
{
"namespace_prefix": {
"": {
"service_prefix": {
"": {
"policy": "read"
}
},
"node_prefix": {
"": {
"policy": "read"
}
}
}
}
}
```
</CodeTabs>
</Tab>
</Tabs>
It's typical for most authenticated users to have this level of access in Consul
as it's required for viewing the catalog or discovering services. If you use a
[Single Sign-On integration](/docs/security/acl/auth-methods/oidc) (Consul
@ -274,7 +340,9 @@ visible to Consul operators in the configuration file while UI users can query
the metrics they need without separately obtaining a token for that provider or
having a token exposed to them that they might be able to use elsewhere.
<CodeTabs>
<CodeTabs heading="Example configuration to add additional HTTP headers to the metrics endpoint">
<CodeBlockConfig filename="agent-config.hcl">
```hcl
ui_config {
@ -292,28 +360,30 @@ ui_config {
}
```
</CodeBlockConfig>
<CodeBlockConfig filename="agent-config.json">
```json
{
"ui_config": [
{
"enabled": true,
"metrics_provider": "example-apm",
"metrics_proxy": [
"ui_config": {
"enabled": true,
"metrics_provider": "example-apm",
"metrics_proxy": {
"base_url": "https://example-apm.com/api/v1/metrics",
"add_headers": [
{
"add_headers": [
{
"name": "Authorization",
"value": "Bearer \u003ctoken\u003e"
}
],
"base_url": "https://example-apm.com/api/v1/metrics"
"name": "Authorization",
"value": "Bearer \u003ctoken\u003e"
}
]
}
]
}
}
```
</CodeBlockConfig>
</CodeTabs>
## Custom Metrics Providers
@ -331,9 +401,9 @@ feedback on [GitHub](https://github.com/hashicorp/consul) or
The template for a complete provider JavaScript file is given below.
<CodeTabs>
<CodeTabs heading="Example JavaScript class template for a custom metrics plugin">
```JavaScript
```javascript
(function () {
var provider = {
/**
@ -553,7 +623,9 @@ named `example-provider`, which is defined in
have been specified in the call to `consul.registerMetricsProvider` as in the
code listing in the last section.
<CodeTabs>
<CodeTabs heading="Example configuration using a custom metrics provider">
<CodeBlockConfig filename="agent-config.hcl">
```hcl
ui_config {
@ -568,6 +640,10 @@ ui_config {
}
```
</CodeBlockConfig>
<CodeBlockConfig filename="agent-config.json">
```json
{
"ui_config": {
@ -579,6 +655,7 @@ ui_config {
}
```
</CodeBlockConfig>
</CodeTabs>
More than one JavaScript file may be specified in