From 6e5423ffb40a0d1837770fa379a612330e396080 Mon Sep 17 00:00:00 2001
From: Sebastian Mark <smark@posteo.net>
Date: Tue, 3 Sep 2024 22:31:56 +0200
Subject: [PATCH] doc: add agent registration instructions
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- add section on how to get existing server token
- add steps to create a new token
- add instructions on how to register an agent/worker

🤖
---
 README.md | 24 +++++++++++++++++++++++-
 1 file changed, 23 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 41080b4..c774bf3 100644
--- a/README.md
+++ b/README.md
@@ -18,6 +18,29 @@
 
 `docker compose exec -it k3s kubectl config view --flatten`
 
+### Add Agents
+
+#### Get Agent Token
+
+> The secure token format (occasionally referred to as a "full" token) contains the following parts:
+> 
+> <prefix><cluster CA hash>::<credentials>
+
+Get existing server token:
+`cat /var/lib/docker/volumes/baseline_k3s-data/_data/server/token`
+
+Create new token:
+`docker compose exec -it k3s k3s token create`
+
+#### Register Agent/Worker
+
+```bash
+export K3S_URL=https://<cpn.fqdn>:6443
+export K3S_NODE_NAME=<node.fqdn>
+export K3S_TOKEN=<full-token>
+curl -sfL https://get.k3s.io | sh -s -
+```
+
 ## Notes
 
 ### ArgoCD
@@ -41,7 +64,6 @@ operation:
 
 See: [infrastructure/zabbix-config - Zabbix Kubernetes Monitoring](https://git.smsvc.net/infrastructure/zabbix-config/src/branch/master/Zabbix-Kubernetes.md)
 
-
 ## Cloud Setups
 
 ### Linode