kjuulh/terraform-hcloud-kube-hetzner
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tweaked readme

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Karim Naufal 2022-02-27 11:01:36 +01:00
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README.md
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@ -93,11 +93,13 @@ _Once you start with Terraform, it's best not to change the state manually in He
### Scaling Nodes ### Scaling Nodes
To scale the number of nodes up or down, just make sure to properly `kubectl drain` the nodes in question first if scaling down. Then just edit these variables in `terraform.tfvars` and re-apply terraform with `terraform apply -auto-approve`. To scale the number of nodes up or down, just make sure to properly `kubectl drain` the nodes in question first if scaling down. Then just edit your `terraform.tfvars` and re-apply terraform with `terraform apply -auto-approve`.
About nodepools, `terraform.tfvars.example` has clear example how to configure them.
## High Availability ## High Availability
By default, we have 3 control planes and 2 agents configured, with automatic upgrades and reboots of the nodes. By default, we have 3 control planes and 3 agents configured, with automatic upgrades and reboots of the nodes.
If you want to remain HA (no downtime), it's important to **keep a number of control planes nodes of at least 3** (2 minimum to maintain quorum when 1 goes down for automated upgrades and reboot), see [Rancher's doc on HA](https://rancher.com/docs/k3s/latest/en/installation/ha-embedded/). If you want to remain HA (no downtime), it's important to **keep a number of control planes nodes of at least 3** (2 minimum to maintain quorum when 1 goes down for automated upgrades and reboot), see [Rancher's doc on HA](https://rancher.com/docs/k3s/latest/en/installation/ha-embedded/).