58 lines
2.2 KiB
Markdown
58 lines
2.2 KiB
Markdown
# Containerized Envoy as SNI dynamic forward proxy on Container Optimized OS
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This module manages a `cloud-config` configuration that starts a containerized [Envoy SNI Dynamic forward proxy]https://www.envoyproxy.io/docs/envoy/latest/configuration/listeners/network_filters/sni_dynamic_forward_proxy_filter) service on Container Optimized OS running on port 443.
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This module depends on the cos-generic-metadata module being in the parent folder. If you change its location be sure to adjust the source attribute in main.tf.
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Logging and monitoring are enabled via the [Google Cloud Logging agent](https://cloud.google.com/container-optimized-os/docs/how-to/logging) configured for the instance via the `google-logging-enabled` metadata property, and the [Node Problem Detector](https://cloud.google.com/container-optimized-os/docs/how-to/monitoring) service started by default on boot.
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## Examples
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### Default configuration
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This example will create a `cloud-config` that uses the module's defaults, creating a simple hello web server showing host name and request id.
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```hcl
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module "cos-envoy-sni-dyn-fwd-proxy" {
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source = "./fabric/modules/cloud-config-container/envoy-sni-dyn-fwd-proxy"
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envoy_image = "envoyproxy/envoy:v1.28-latest"
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}
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module "vm-envoy-sni-dyn-fwd-proxy" {
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source = "./fabric/modules/compute-vm"
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project_id = "my-project"
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zone = "europe-west8-b"
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name = "cos-envoy-sni-dyn-fw-proxy"
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network_interfaces = [{
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network = "default"
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subnetwork = "gce"
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}]
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metadata = {
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user-data = module.cos-envoy-sni-dyn-fwd-proxy.cloud_config
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google-logging-enabled = true
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}
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boot_disk = {
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initialize_params = {
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image = "projects/cos-cloud/global/images/family/cos-stable"
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type = "pd-ssd"
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size = 10
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}
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}
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tags = ["https-server", "ssh"]
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}
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# tftest modules=1 resources=1
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```
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<!-- BEGIN TFDOC -->
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## Variables
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| name | description | type | required | default |
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|---|---|:---:|:---:|:---:|
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| [envoy_image](variables.tf#L17) | Image. | <code>string</code> | ✓ | |
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## Outputs
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| name | description | sensitive |
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|---|---|:---:|
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| [cloud_config](outputs.tf#L17) | Rendered cloud-config file to be passed as user-data instance metadata. | |
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<!-- END TFDOC -->
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