k3s-ansible VS k3s-ansible

If you're down for some purchases, I recommend wholeheartedly to get the turing pi https://turingpi.com/ some raspberry modules and k3s-ansible https://github.com/k3s-io/k3s-ansible

I tried k3s recently and installing it was easy using k3s-ansible https://github.com/k3s-io/k3s-ansible

I use some ansible playbooks and when I am ready to update the version I update the variable in the playbooks. https://github.com/k3s-io/k3s-ansible

root@k3s1:~# git clone https://github.com/k3s-io/k3s-ansible Cloning into 'k3s-ansible'... remote: Enumerating objects: 922, done. remote: Total 922 (delta 0), reused 0 (delta 0), pack-reused 922 Receiving objects: 100% (922/922), 116.25 KiB | 3.32 MiB/s, done. Resolving deltas: 100% (351/351), done. root@k3s1:~# cd k3s-ansible/ root@k3s1:~/k3s-ansible# cp -R inventory/sample inventory/my-cluster root@k3s1:~/k3s-ansible# cat inventory/my-cluster/group_vars/all.yml --- k3s_version: v1.24.7+k3s1 ansible_user: ubuntu systemd_dir: /etc/systemd/system master_ip: "{{ hostvars[groups['master'][0]]['ansible_host'] | default(groups['master'][0]) }}" extra_server_args: "" extra_agent_args: "" root@k3s1:~/k3s-ansible# cat inventory/my-cluster/hosts.ini [master] 10.42.2.6 [node] 10.42.0.7 10.42.1.9 [k3s_cluster:children] master node root@k3s1:~/k3s-ansible# ssh-copy-id [email protected] /usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_rsa.pub" /usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed /usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys [email protected]'s password: Number of key(s) added: 1 Now try logging into the machine, with: "ssh '[email protected]'" and check to make sure that only the key(s) you wanted were added. root@k3s1:~/k3s-ansible# ssh-copy-id [email protected] /usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_rsa.pub" /usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed /usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys [email protected]'s password: Number of key(s) added: 1 Now try logging into the machine, with: "ssh '[email protected]'" and check to make sure that only the key(s) you wanted were added. root@k3s1:~/k3s-ansible# ssh-copy-id [email protected] /usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_rsa.pub" /usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed /usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys [email protected]'s password: Number of key(s) added: 1 Now try logging into the machine, with: "ssh '[email protected]'" and check to make sure that only the key(s) you wanted were added. root@k3s1:~/k3s-ansible# apt install python3-pip -y && pip install ansible root@k3s1:~/k3s-ansible# ansible-playbook site.yml -i inventory/my-cluster/hosts.ini PLAY [k3s_cluster] **************************************************************************************************************************************************************** TASK [Gathering Facts] ************************************************************************************************************************************************************ Thursday 10 November 2022 23:20:03 +0000 (0:00:00.013) 0:00:00.013 ***** ok: [10.42.2.6] ok: [10.42.1.9] ok: [10.42.0.7] TASK [prereq : Set SELinux to disabled state] ************************************************************************************************************************************* Thursday 10 November 2022 23:20:04 +0000 (0:00:01.535) 0:00:01.548 ***** skipping: [10.42.2.6] skipping: [10.42.0.7] skipping: [10.42.1.9] TASK [prereq : Enable IPv4 forwarding] ******************************************************************************************************************************************** Thursday 10 November 2022 23:20:04 +0000 (0:00:00.058) 0:00:01.607 ***** changed: [10.42.2.6] changed: [10.42.1.9] changed: [10.42.0.7] TASK [prereq : Enable IPv6 forwarding] ******************************************************************************************************************************************** Thursday 10 November 2022 23:20:05 +0000 (0:00:00.318) 0:00:01.925 ***** skipping: [10.42.2.6] skipping: [10.42.0.7] skipping: [10.42.1.9] TASK [prereq : Add br_netfilter to /etc/modules-load.d/] ************************************************************************************************************************** Thursday 10 November 2022 23:20:05 +0000 (0:00:00.053) 0:00:01.978 ***** skipping: [10.42.2.6] skipping: [10.42.0.7] skipping: [10.42.1.9] TASK [prereq : Load br_netfilter] ************************************************************************************************************************************************* Thursday 10 November 2022 23:20:05 +0000 (0:00:00.051) 0:00:02.030 ***** skipping: [10.42.2.6] skipping: [10.42.0.7] skipping: [10.42.1.9] TASK [prereq : Set bridge-nf-call-iptables (just to be sure)] ********************************************************************************************************************* Thursday 10 November 2022 23:20:05 +0000 (0:00:00.052) 0:00:02.082 ***** skipping: [10.42.2.6] => (item=net.bridge.bridge-nf-call-iptables) skipping: [10.42.2.6] => (item=net.bridge.bridge-nf-call-ip6tables) skipping: [10.42.0.7] => (item=net.bridge.bridge-nf-call-iptables) skipping: [10.42.0.7] => (item=net.bridge.bridge-nf-call-ip6tables) skipping: [10.42.1.9] => (item=net.bridge.bridge-nf-call-iptables) skipping: [10.42.1.9] => (item=net.bridge.bridge-nf-call-ip6tables) TASK [prereq : Add /usr/local/bin to sudo secure_path] **************************************************************************************************************************** Thursday 10 November 2022 23:20:05 +0000 (0:00:00.072) 0:00:02.154 ***** skipping: [10.42.2.6] skipping: [10.42.0.7] skipping: [10.42.1.9] TASK [download : Download k3s binary x64] ***************************************************************************************************************************************** Thursday 10 November 2022 23:20:05 +0000 (0:00:00.103) 0:00:02.258 ***** [WARNING]: Module remote_tmp /root/.ansible/tmp did not exist and was created with a mode of 0700, this may cause issues when running as another user. To avoid this, create the remote_tmp dir with the correct permissions manually changed: [10.42.2.6] changed: [10.42.0.7] changed: [10.42.1.9] TASK [download : Download k3s binary arm64] *************************************************************************************************************************************** Thursday 10 November 2022 23:20:15 +0000 (0:00:10.036) 0:00:12.295 ***** skipping: [10.42.2.6] skipping: [10.42.0.7] skipping: [10.42.1.9] TASK [download : Download k3s binary armhf] *************************************************************************************************************************************** Thursday 10 November 2022 23:20:15 +0000 (0:00:00.067) 0:00:12.362 ***** skipping: [10.42.2.6] skipping: [10.42.0.7] skipping: [10.42.1.9] TASK [raspberrypi : Test for raspberry pi /proc/cpuinfo] ************************************************************************************************************************** Thursday 10 November 2022 23:20:15 +0000 (0:00:00.084) 0:00:12.447 ***** ok: [10.42.2.6] ok: [10.42.0.7] ok: [10.42.1.9] TASK [raspberrypi : Test for raspberry pi /proc/device-tree/model] **************************************************************************************************************** Thursday 10 November 2022 23:20:16 +0000 (0:00:00.359) 0:00:12.806 ***** ok: [10.42.2.6] ok: [10.42.0.7] ok: [10.42.1.9] TASK [raspberrypi : Set raspberry_pi fact to true] ******************************************************************************************************************************** Thursday 10 November 2022 23:20:16 +0000 (0:00:00.255) 0:00:13.062 ***** skipping: [10.42.2.6] skipping: [10.42.0.7] skipping: [10.42.1.9] TASK [raspberrypi : Set detected_distribution to Raspbian] ************************************************************************************************************************ Thursday 10 November 2022 23:20:16 +0000 (0:00:00.060) 0:00:13.123 ***** skipping: [10.42.2.6] skipping: [10.42.0.7] skipping: [10.42.1.9] TASK [raspberrypi : Set detected_distribution to Raspbian (ARM64 on Debian Buster)] *********************************************************************************************** Thursday 10 November 2022 23:20:16 +0000 (0:00:00.112) 0:00:13.235 ***** skipping: [10.42.2.6] skipping: [10.42.0.7] skipping: [10.42.1.9] TASK [raspberrypi : Set detected_distribution_major_version] ********************************************************************************************************************** Thursday 10 November 2022 23:20:16 +0000 (0:00:00.073) 0:00:13.309 ***** skipping: [10.42.2.6] skipping: [10.42.0.7] skipping: [10.42.1.9] TASK [raspberrypi : execute OS related tasks on the Raspberry Pi] ***************************************************************************************************************** Thursday 10 November 2022 23:20:16 +0000 (0:00:00.080) 0:00:13.389 ***** skipping: [10.42.2.6] => (item=/root/k3s-ansible/roles/raspberrypi/tasks/prereq/Ubuntu.yml) skipping: [10.42.0.7] => (item=/root/k3s-ansible/roles/raspberrypi/tasks/prereq/Ubuntu.yml) skipping: [10.42.1.9] => (item=/root/k3s-ansible/roles/raspberrypi/tasks/prereq/Ubuntu.yml) PLAY [master] ********************************************************************************************************************************************************************* TASK [Gathering Facts] ************************************************************************************************************************************************************ Thursday 10 November 2022 23:20:16 +0000 (0:00:00.125) 0:00:13.515 ***** ok: [10.42.2.6] TASK [k3s/master : Copy K3s service file] ***************************************************************************************************************************************** Thursday 10 November 2022 23:20:17 +0000 (0:00:00.660) 0:00:14.175 ***** changed: [10.42.2.6] TASK [k3s/master : Enable and check K3s service] ********************************************************************************************************************************** Thursday 10 November 2022 23:20:18 +0000 (0:00:00.688) 0:00:14.864 ***** changed: [10.42.2.6] TASK [k3s/master : Wait for node-token] ******************************************************************************************************************************************* Thursday 10 November 2022 23:20:29 +0000 (0:00:11.160) 0:00:26.025 ***** ok: [10.42.2.6] TASK [k3s/master : Register node-token file access mode] ************************************************************************************************************************** Thursday 10 November 2022 23:20:29 +0000 (0:00:00.458) 0:00:26.483 ***** ok: [10.42.2.6] TASK [k3s/master : Change file access node-token] ********************************************************************************************************************************* Thursday 10 November 2022 23:20:30 +0000 (0:00:00.329) 0:00:26.812 ***** changed: [10.42.2.6] TASK [k3s/master : Read node-token from master] *********************************************************************************************************************************** Thursday 10 November 2022 23:20:30 +0000 (0:00:00.422) 0:00:27.234 ***** ok: [10.42.2.6] TASK [k3s/master : Store Master node-token] *************************************************************************************************************************************** Thursday 10 November 2022 23:20:30 +0000 (0:00:00.303) 0:00:27.537 ***** ok: [10.42.2.6] TASK [k3s/master : Restore node-token file access] ******************************************************************************************************************************** Thursday 10 November 2022 23:20:30 +0000 (0:00:00.041) 0:00:27.579 ***** changed: [10.42.2.6] TASK [k3s/master : Create directory .kube] **************************************************************************************************************************************** Thursday 10 November 2022 23:20:31 +0000 (0:00:00.232) 0:00:27.812 ***** changed: [10.42.2.6] TASK [k3s/master : Copy config file to user home directory] *********************************************************************************************************************** Thursday 10 November 2022 23:20:31 +0000 (0:00:00.310) 0:00:28.122 ***** changed: [10.42.2.6] TASK [k3s/master : Replace https://localhost:6443 by https://master-ip:6443] ****************************************************************************************************** Thursday 10 November 2022 23:20:31 +0000 (0:00:00.211) 0:00:28.334 ***** changed: [10.42.2.6] TASK [k3s/master : Create kubectl symlink] **************************************************************************************************************************************** Thursday 10 November 2022 23:20:32 +0000 (0:00:00.693) 0:00:29.027 ***** changed: [10.42.2.6] TASK [k3s/master : Create crictl symlink] ***************************************************************************************************************************************** Thursday 10 November 2022 23:20:32 +0000 (0:00:00.187) 0:00:29.215 ***** changed: [10.42.2.6] PLAY [node] *********************************************************************************************************************************************************************** TASK [Gathering Facts] ************************************************************************************************************************************************************ Thursday 10 November 2022 23:20:32 +0000 (0:00:00.209) 0:00:29.424 ***** ok: [10.42.1.9] ok: [10.42.0.7] TASK [k3s/node : Copy K3s service file] ******************************************************************************************************************************************* Thursday 10 November 2022 23:20:33 +0000 (0:00:00.724) 0:00:30.149 ***** changed: [10.42.1.9] changed: [10.42.0.7] TASK [k3s/node : Enable and check K3s service] ************************************************************************************************************************************ Thursday 10 November 2022 23:20:34 +0000 (0:00:00.538) 0:00:30.687 ***** changed: [10.42.1.9] changed: [10.42.0.7] PLAY RECAP ************************************************************************************************************************************************************************ 10.42.0.7 : ok=8 changed=4 unreachable=0 failed=0 skipped=13 rescued=0 ignored=0 10.42.1.9 : ok=8 changed=4 unreachable=0 failed=0 skipped=13 rescued=0 ignored=0 10.42.2.6 : ok=19 changed=11 unreachable=0 failed=0 skipped=13 rescued=0 ignored=0 Thursday 10 November 2022 23:20:44 +0000 (0:00:10.395) 0:00:41.082 ***** =============================================================================== k3s/master : Enable and check K3s service --------------------------------------------------------------------------------------------------------------------------------- 11.16s k3s/node : Enable and check K3s service ----------------------------------------------------------------------------------------------------------------------------------- 10.40s download : Download k3s binary x64 ---------------------------------------------------------------------------------------------------------------------------------------- 10.04s Gathering Facts ------------------------------------------------------------------------------------------------------------------------------------------------------------ 1.54s Gathering Facts ------------------------------------------------------------------------------------------------------------------------------------------------------------ 0.72s k3s/master : Replace https://localhost:6443 by https://master-ip:6443 ------------------------------------------------------------------------------------------------------ 0.69s k3s/master : Copy K3s service file ----------------------------------------------------------------------------------------------------------------------------------------- 0.69s Gathering Facts ------------------------------------------------------------------------------------------------------------------------------------------------------------ 0.66s k3s/node : Copy K3s service file ------------------------------------------------------------------------------------------------------------------------------------------- 0.54s k3s/master : Wait for node-token ------------------------------------------------------------------------------------------------------------------------------------------- 0.46s k3s/master : Change file access node-token --------------------------------------------------------------------------------------------------------------------------------- 0.42s raspberrypi : Test for raspberry pi /proc/cpuinfo -------------------------------------------------------------------------------------------------------------------------- 0.36s k3s/master : Register node-token file access mode -------------------------------------------------------------------------------------------------------------------------- 0.33s prereq : Enable IPv4 forwarding -------------------------------------------------------------------------------------------------------------------------------------------- 0.32s k3s/master : Create directory .kube ---------------------------------------------------------------------------------------------------------------------------------------- 0.31s k3s/master : Read node-token from master ----------------------------------------------------------------------------------------------------------------------------------- 0.30s raspberrypi : Test for raspberry pi /proc/device-tree/model ---------------------------------------------------------------------------------------------------------------- 0.26s k3s/master : Restore node-token file access -------------------------------------------------------------------------------------------------------------------------------- 0.23s k3s/master : Copy config file to user home directory ----------------------------------------------------------------------------------------------------------------------- 0.21s k3s/master : Create crictl symlink ----------------------------------------------------------------------------------------------------------------------------------------- 0.21s

Plus there is a pretty good ansible playbook https://github.com/k3s-io/k3s-ansible

We have develop ansible role to do that. We did not put it as opensource yet. But there is one in the comunity which looks good: https://github.com/k3s-io/k3s-ansible

For the Ansible part, have a look at techno-tim/k3s-ansible for a basic k3s (not the full thing) with MetalLB ansible setup. There's also the original one (based on Traefik): k3s-io/k3s-ansible. Modfiy hosts and vars accordingly to your needs. Run your terraform plan, then run the ansible playbook once you've modified the vars accordingly. They're good starters, but for a full blown k8s ansible recipe, I'll be able to help you when I come back from holidays :) (16th of August).

I deployed k3s to a test node using Techno Tim's k3s-ansible playbook.

Remind myself about how Ansible works (I've forked this: https://github.com/techno-tim/k3s-ansible/tree/master and added a role to automatically set up my Hetzner server and install Core OS, as well as staring the cluster with Flannel Wireguard Native, and a few other minor changes).

I think this one is updated https://docs.technotim.live/posts/k3s-etcd-ansible/

I recently broke my cluster somehow (see this thread) so I decided to start fresh because I can't get K3s up and running again. I now have 5 nodes (3 master, 2 worker) with etcd configured using the K3s-ansible guide found here. Is it possible to recover the PVs from my failed cluster? I still have SSH access to each of the machines that participated in the cluster. It would save me a lot of rebuilding time if I could extract them (even from an older backup, if Longhorn stores them in an accessible format) and apply to the new cluster.

Like u/darkstar_01 mentioned, I'd start with k3s since it has a lot of these things built in and is really lightweight. To further that suggestion I'd recommend using u/Techno-Tim k3s-ansible playbook, it's dark magic. https://github.com/techno-tim/k3s-ansible

To be honest, I'd just switch to Kubernetes for something like this. Technotim has some pretty easy to digest guides on how to get a basic cluster set up

take a look at this https://github.com/techno-tim/k3s-ansible https://www.youtube.com/watch?v=CbkEWcUZ7zM&ab\_channel=TechnoTim

I'm having a hard time understanding how to setup the network/cluster for HA. I've basically been following along with this guide: https://docs.technotim.live/posts/k3s-etcd-ansible/ which uses MetalLB + kube-vip. I have the cluster running and have the MetalLB IP range set for a block of internal LAN IPs / Layer 2 (unsure if this is correct for what I'm looking to do). All of this seems to be working internally. My confusion is how to get WAN traffic in.

I’m Nomsplease on GitHub, and I’m currently running the latest Proxmox 7.x with the opt-in kernel 6.X. https://github.com/techno-tim/k3s-ansible

Proxmox is host to a bunch of VMs, including a K3S cluster that is setup though an Ansible playbook. There are 3 Masters and 4 workers. I followed TechnoTim’s guide here to get this cracking and honestly, I’ve only scratched the surface on Kubernetes. I setup a bash alias on the first IP in the K3S stack to run the Ansible playbook with one simple command, so its simple to spin up again, should I shutoff this server. I then setup Rancher to maintain and utilize the Kubernetes Cluster, with a Traefik2 ingress, MetalLB, Helm, and Longhorn for distributed storage. Links here for tutorials by TechnoTim – Longhorn, Traefik-K3S-ingress with Cert-manager, and Rancher setup. The Proxmox server is also home to two separate PBX solutions, they’re installed and they have access to my SIP trunk provider (voip.ms, here’s my referral link if anyone’s interested.) I’ve added 15 bucks to the account and have it as a work line should I ever get my Technical Consulting business off the ground. Right now the PBXs can be spun up but the IP phones are sitting in a closet. It’s a cool project to get going though even if I don’t need a landline, let alone a full PBX. From there I have a bunch of small Ubuntu VMs that I have a created though template’s with cloud-init drives to make it a sinch to spin up another VM (Cloud-init tutorial) I just started to get into Terraform (IoC – infrastructure as code) to spin up VMs in much the same way you would with Ansible (project here thru The Digital Life, yt channel). LibreNMS is another thing that I just spun up the other day. No real tutorial to link because SNMP is dead simple. I’m sure I could dockerize some of these projects, rather than spinning up a whole new Ubuntu VM, but sometimes its nice to just have a clean start and then combine Compose files into stacks though I’m sure some of the VMs can be setup to run more than one service per VM.