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Update terraform-provider-ct plugin from v0.2.1 to v0.3.0
* Provide migration instructions for upgrading terraform-provider-ct in-place for v1.12.2+ clusters * Require switching from ~/.terraformrc to the Terraform third-party plugins directory ~/.terraform.d/plugins/ * Require Container Linux 1688.5.3 or newer
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Dalton Hubble
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@ -5,9 +5,13 @@ Notable changes between versions.
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## Latest
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* Kubernetes [v1.13.1](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG-1.13.md#v1131)
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* Update Calico from v3.3.2 to [v3.4.0](https://docs.projectcalico.org/v3.4/releases/)
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* Update Calico from v3.3.2 to [v3.4.0](https://docs.projectcalico.org/v3.4/releases/) ([#362](https://github.com/poseidon/typhoon/pull/362))
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* Install CNI plugins with an init container rather than a sidecar
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* Improve the `calico-node` ClusterRole
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* Recommend updating `terraform-provider-ct` plugin from v0.2.1 to v0.3.0 ([#363](https://github.com/poseidon/typhoon/pull/363))
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* [Migration](https://typhoon.psdn.io/topics/maintenance/#upgrade-terraform-provider-ct) instructions for upgrading `terraform-provider-ct` in-place for v1.12.2+ clusters (**action required**)
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* [Require](https://typhoon.psdn.io/topics/maintenance/#terraform-plugins-directory) switching from `~/.terraformrc` to the Terraform [third-party plugins](https://www.terraform.io/docs/configuration/providers.html#third-party-plugins) directory `~/.terraform.d/plugins/`
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* Require Container Linux 1688.5.3 or newer
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#### Google Cloud
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@ -18,15 +18,15 @@ Install [Terraform](https://www.terraform.io/downloads.html) v0.11.x on your sys
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```sh
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$ terraform version
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Terraform v0.11.7
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Terraform v0.11.11
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```
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Add the [terraform-provider-ct](https://github.com/coreos/terraform-provider-ct) plugin binary for your system to `~/.terraform.d/plugins/`, noting the final name.
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```sh
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wget https://github.com/coreos/terraform-provider-ct/releases/download/v0.2.1/terraform-provider-ct-v0.2.1-linux-amd64.tar.gz
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tar xzf terraform-provider-ct-v0.2.1-linux-amd64.tar.gz
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mv terraform-provider-ct-v0.2.1-linux-amd64/terraform-provider-ct ~/.terraform.d/plugins/terraform-provider-ct_v0.2.1
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wget https://github.com/coreos/terraform-provider-ct/releases/download/v0.3.0/terraform-provider-ct-v0.3.0-linux-amd64.tar.gz
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tar xzf terraform-provider-ct-v0.3.0-linux-amd64.tar.gz
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mv terraform-provider-ct-v0.3.0-linux-amd64/terraform-provider-ct ~/.terraform.d/plugins/terraform-provider-ct_v0.3.0
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```
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Read [concepts](/architecture/concepts/) to learn about Terraform, modules, and organizing resources. Change to your infrastructure repository (e.g. `infra`).
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@ -57,7 +57,7 @@ provider "aws" {
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}
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provider "ct" {
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version = "0.2.1"
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version = "0.3.0"
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}
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provider "local" {
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@ -21,15 +21,15 @@ Install [Terraform](https://www.terraform.io/downloads.html) v0.11.x on your sys
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```sh
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$ terraform version
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Terraform v0.11.7
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Terraform v0.11.11
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```
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Add the [terraform-provider-ct](https://github.com/coreos/terraform-provider-ct) plugin binary for your system to `~/.terraform.d/plugins/`, noting the final name.
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```sh
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wget https://github.com/coreos/terraform-provider-ct/releases/download/v0.2.1/terraform-provider-ct-v0.2.1-linux-amd64.tar.gz
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tar xzf terraform-provider-ct-v0.2.1-linux-amd64.tar.gz
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mv terraform-provider-ct-v0.2.1-linux-amd64/terraform-provider-ct ~/.terraform.d/plugins/terraform-provider-ct_v0.2.1
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wget https://github.com/coreos/terraform-provider-ct/releases/download/v0.3.0/terraform-provider-ct-v0.3.0-linux-amd64.tar.gz
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tar xzf terraform-provider-ct-v0.3.0-linux-amd64.tar.gz
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mv terraform-provider-ct-v0.3.0-linux-amd64/terraform-provider-ct ~/.terraform.d/plugins/terraform-provider-ct_v0.3.0
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```
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Read [concepts](/architecture/concepts/) to learn about Terraform, modules, and organizing resources. Change to your infrastructure repository (e.g. `infra`).
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@ -55,7 +55,7 @@ provider "azurerm" {
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}
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provider "ct" {
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version = "0.2.1"
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version = "0.3.0"
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}
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provider "local" {
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@ -124,9 +124,9 @@ mv terraform-provider-matchbox-v0.2.2-linux-amd64/terraform-provider-matchbox ~/
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Add the [terraform-provider-ct](https://github.com/coreos/terraform-provider-ct) plugin binary for your system to `~/.terraform.d/plugins/`, noting the final name.
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```sh
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wget https://github.com/coreos/terraform-provider-ct/releases/download/v0.2.1/terraform-provider-ct-v0.2.1-linux-amd64.tar.gz
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tar xzf terraform-provider-ct-v0.2.1-linux-amd64.tar.gz
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mv terraform-provider-ct-v0.2.1-linux-amd64/terraform-provider-ct ~/.terraform.d/plugins/terraform-provider-ct_v0.2.1
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wget https://github.com/coreos/terraform-provider-ct/releases/download/v0.3.0/terraform-provider-ct-v0.3.0-linux-amd64.tar.gz
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tar xzf terraform-provider-ct-v0.3.0-linux-amd64.tar.gz
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mv terraform-provider-ct-v0.3.0-linux-amd64/terraform-provider-ct ~/.terraform.d/plugins/terraform-provider-ct_v0.3.0
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```
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Read [concepts](/architecture/concepts/) to learn about Terraform, modules, and organizing resources. Change to your infrastructure repository (e.g. `infra`).
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@ -149,7 +149,7 @@ provider "matchbox" {
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}
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provider "ct" {
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version = "0.2.1"
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version = "0.3.0"
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}
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provider "local" {
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@ -18,15 +18,15 @@ Install [Terraform](https://www.terraform.io/downloads.html) v0.11.x on your sys
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```sh
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$ terraform version
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Terraform v0.11.7
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Terraform v0.11.11
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```
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Add the [terraform-provider-ct](https://github.com/coreos/terraform-provider-ct) plugin binary for your system to `~/.terraform.d/plugins/`, noting the final name.
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```sh
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wget https://github.com/coreos/terraform-provider-ct/releases/download/v0.2.1/terraform-provider-ct-v0.2.1-linux-amd64.tar.gz
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tar xzf terraform-provider-ct-v0.2.1-linux-amd64.tar.gz
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mv terraform-provider-ct-v0.2.1-linux-amd64/terraform-provider-ct ~/.terraform.d/plugins/terraform-provider-ct_v0.2.1
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wget https://github.com/coreos/terraform-provider-ct/releases/download/v0.3.0/terraform-provider-ct-v0.3.0-linux-amd64.tar.gz
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tar xzf terraform-provider-ct-v0.3.0-linux-amd64.tar.gz
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mv terraform-provider-ct-v0.3.0-linux-amd64/terraform-provider-ct ~/.terraform.d/plugins/terraform-provider-ct_v0.3.0
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```
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Read [concepts](/architecture/concepts/) to learn about Terraform, modules, and organizing resources. Change to your infrastructure repository (e.g. `infra`).
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@ -56,7 +56,7 @@ provider "digitalocean" {
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}
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provider "ct" {
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version = "0.2.1"
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version = "0.3.0"
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}
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provider "local" {
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@ -24,9 +24,9 @@ Terraform v0.11.7
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Add the [terraform-provider-ct](https://github.com/coreos/terraform-provider-ct) plugin binary for your system to `~/.terraform.d/plugins/`, noting the final name.
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```sh
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wget https://github.com/coreos/terraform-provider-ct/releases/download/v0.2.1/terraform-provider-ct-v0.2.1-linux-amd64.tar.gz
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tar xzf terraform-provider-ct-v0.2.1-linux-amd64.tar.gz
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mv terraform-provider-ct-v0.2.1-linux-amd64/terraform-provider-ct ~/.terraform.d/plugins/terraform-provider-ct_v0.2.1
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wget https://github.com/coreos/terraform-provider-ct/releases/download/v0.3.0/terraform-provider-ct-v0.3.0-linux-amd64.tar.gz
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tar xzf terraform-provider-ct-v0.3.0-linux-amd64.tar.gz
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mv terraform-provider-ct-v0.3.0-linux-amd64/terraform-provider-ct ~/.terraform.d/plugins/terraform-provider-ct_v0.3.0
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```
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Read [concepts](/architecture/concepts/) to learn about Terraform, modules, and organizing resources. Change to your infrastructure repository (e.g. `infra`).
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@ -58,7 +58,7 @@ provider "google" {
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}
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provider "ct" {
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version = "0.2.1"
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version = "0.3.0"
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}
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provider "local" {
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@ -193,3 +193,80 @@ $ terraform init
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$ terraform plan
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```
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### Upgrade terraform-provider-ct
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The [terraform-provider-ct](https://github.com/coreos/terraform-provider-ct) plugin parses, validates, and converts Container Linux Configs into Ignition user-data for provisioning instances. Previously, updating the plugin re-provisioned controller nodes and was destructive to clusters. With Typhoon v1.12.2+, the plugin can be updated in-place and on apply, only workers will be replaced.
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First, [migrate](#terraform-plugins-directory) to the Terraform 3rd-party plugin directory to allow 3rd-party plugins to be defined and versioned independently (rather than globally).
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Add the [terraform-provider-ct](https://github.com/coreos/terraform-provider-ct) plugin binary for your system to `~/.terraform.d/plugins/`, noting the final name.
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```sh
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wget https://github.com/coreos/terraform-provider-ct/releases/download/v0.3.0/terraform-provider-ct-v0.3.0-linux-amd64.tar.gz
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tar xzf terraform-provider-ct-v0.3.0-linux-amd64.tar.gz
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mv terraform-provider-ct-v0.3.0-linux-amd64/terraform-provider-ct ~/.terraform.d/plugins/terraform-provider-ct_v0.3.0
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```
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Binary names are versioned. This enables the ability to upgrade different plugins and have clusters pin different versions.
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```
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$ tree ~/.terraform.d/
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/home/user/.terraform.d/
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└── plugins
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├── terraform-provider-ct_v0.2.1
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├── terraform-provider-ct_v0.3.0
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└── terraform-provider-matchbox_v0.2.2
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```
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Update the version of the `ct` plugin in each Terraform working directory. Typhoon clusters managed in the working directory **must** be v1.12.2 or higher.
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```
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# providers.tf
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provider "ct" {
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version = "0.3.0"
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}
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```
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Run init and plan to check that no diff is proposed for the controller nodes (a diff would destroy cluster state).
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```
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terraform init
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terraform plan
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```
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Apply the change. Worker nodes' user-data will be changed and workers will be replaced. Rollout happens slightly differently on each platform:
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#### AWS
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AWS creates a new worker ASG, then removes the old ASG. New workers join the cluster and old workers disappear. `terraform apply` will hang during this process.
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#### Azure
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Azure edits the worker scale set in-place instantly. Manually terminate workers to create replacement workers using the new user-data.
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#### Bare-Metal
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No action is needed. Bare-Metal machines do not re-PXE unless explicitly made to do so.
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#### DigitalOcean
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DigitalOcean destroys existing worker nodes and DNS records, then creates new workers and DNS records. DigitalOcean lacks a "managed group" notion. For worker droplets to join the cluster, you **must** taint the secret copying step to indicate it must be repeated to add the kubeconfig to new workers.
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```
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# old workers destroyed, new workers created
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terraform apply
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# add kubeconfig to new workers
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terraform state list | grep null_resource
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terraform taint -module digital-ocean-nemo null_resource.copy-worker-secrets.N
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terraform apply
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```
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Expect downtime.
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#### Google Cloud
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Google Cloud creates a new worker template and edits the worker instance group instantly. Manually terminate workers and replacement workers will use the user-data.
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