k3s-oci-cluster VS traefik

After you've cloned the repo, go to oci/terraform.tfvars and edit all values with the ones from your notes file. This build uses the great terraform configuration files from this repo of garutilorenzo (using version 2.2; if you have errors running all of this, you should check what changed in this repo since v2.2, or 01.02.23). You can read here if you want to customize your configuration and edit the main.tf file. This is the diagram that garutilorenzo made and how your deployment will look like (this tutorial is without Longhorn and ArgoCD, with 1 server nodes + 3 worker nodes and with ingress controller set as Traefik): *note - I've got some problems with clock of WSL2 not being synced to Windows clock. And provisioning didn't worked so if you receive clock errors too, verify your time with datecommand, if out of sync just run sudo hwclock -s or sudo ntpdate time.windows.com. Now just run terraform plan and then terraform apply. If everything was ok you should have your resources created.

This new release v2.0 introduces:

We use the same stack used in this repository. This stack need longhorn and nginx ingress.

This module will deploy a Kubernetes cluster for free, using K3s and Oracle always free resources.

Var Required Desc region yes set the correct OCI region based on your needs availability_domain yes Set the correct availability domain. See how to find the availability domain compartment_ocid yes Set the correct compartment ocid. See how to find the compartment ocid cluster_name yes the name of your K3s cluster. Default: k3s-cluster k3s_token yes The token of your K3s cluster. How to generate a random token my_public_ip_cidr yes your public ip in cidr format (Example: 195.102.xxx.xxx/32) environment yes Current work environment (Example: staging/dev/prod). This value is used for tag all the deployed resources compute_shape no Compute shape to use. Default VM.Standard.A1.Flex. NOTE Is mandatory to use this compute shape for provision 4 always free VMs os_image_id no Image id to use. Default image: Canonical-Ubuntu-20.04-aarch64-2022.01.18-0. See how to list all available OS images oci_core_vcn_cidr no VCN CIDR. Default: oci_core_vcn_cidr oci_core_subnet_cidr10 no First subnet CIDR. Default: 10.0.0.0/24 oci_core_subnet_cidr11 no Second subnet CIDR. Default: 10.0.1.0/24 oci_identity_dynamic_group_name no Dynamic group name. This dynamic group will contains all the instances of this specific compartment. Default: Compute_Dynamic_Group oci_identity_policy_name no Policy name. This policy will allow dynamic group 'oci_identity_dynamic_group_name' to read OCI api without auth. Default: Compute_To_Oci_Api_Policy kube_api_port no Kube api default port Default: 6443 public_lb_shape no LB shape for the public LB. Default: flexible. NOTE is mandatory to use this kind of shape to provision two always free LB (public and private) http_lb_port no http port used by the public LB. Default: 80 https_lb_port no http port used by the public LB. Default: 443 k3s_server_pool_size no Number of k3s servers deployed. Default 2 k3s_worker_pool_size no Number of k3s workers deployed. Default 2 install_longhorn no Boolean value, install longhorn "Cloud native distributed block storage for Kubernetes". Default: true longhorn_release no Longhorn release. Default: v1.2.3 unique_tag_key no Unique tag name used for tagging all the deployed resources. Default: k3s-provisioner unique_tag_value no Unique value used with unique_tag_key. Default: https://github.com/garutilorenzo/k3s-oci-cluster PATH_TO_PUBLIC_KEY no Path to your public ssh key (Default: "~/.ssh/id_rsa.pub) PATH_TO_PRIVATE_KEY no Path to your private ssh key (Default: "~/.ssh/id_rsa)

However, it's very unlikely that .NET developers will directly expose their Kestrel-based web apps to the internet. Typically, we use other popular web servers like Nginx, Traefik, and Caddy to act as a reverse-proxy in front of Kestrel for various reasons:

Not as good though. Case in point: https://github.com/traefik/traefik/issues/5472#issuecomment-... (that's just from this morning)

I'm speak objectively here. Of course, any built-in auto HTTPS that works (more or less) is better than none. Traefik uses an ACME library that was originally written for Caddy. After the original author left that project, Traefik team started maintaining it. Caddy's users' requirements exceeded what the library was capable of, but unfortunately there was friction in getting it to achieve our requirements. So I ended up writing a new ACME client library in Go and, together with upgrades in CertMagic (Caddy's auto-TLS lib), Caddy has the more flexible, robust, and capable auto-HTTPS functionality.

That is to say, not all auto-HTTPS functionalities are the same.

We'll use Traefik, an open source cloud native gateway that can plug into a Kubernetes cluster. It has the concept of "middleware" that can process API requests before passing them through to a backend. We can configuring a rate limit for all of our API endpoints by matching on the request path:

I did the same question here and here

Sadly there is currently no way of doing so. https://github.com/traefik/traefik/issues/6999

Traefik is another widely used system that has automatic configuration and offers support for more things like swarm/kubernetes/etc.

I have a webapp which I currently have deployed by running nginx in a container. Works as it should, however I am intersted in adding more observability to the webapp and found this reverse-proxy https://github.com/traefik/traefik which seems to expose some nice metrics which can be useful for observability.

``` more details in this (github issue)[https://github.com/traefik/traefik/issues/5059]