refactoring

implementations-line/systems/technical-infrastructure/CYDEL01-cybdev02.md

@@ -95,11 +95,16 @@ journalctl -u rancher-system-agent -f
 ```
   sudo vi /etc/hosts
 
-  # Add a line: server-desired-hostname
+  # Add a line per server-desired-hostname (FQDN)
+  127.0.1.1 cybdev02
+
   # Local K8s application extended hostnames
   192.168.30.13 cybdev02.cybnity.tech
+  192.168.60.18 cybsup01.cybnity.tech
+
   # Cluster exposed API Endpoint FQDN (configuration managed in Rancher)
   192.168.30.13 dev.cybnity.tech
+
 ```
 
 ## Security

implementations-line/systems/technical-infrastructure/CYDEL01-cybsup01.md

@@ -100,7 +100,7 @@ See [RKE2 security certificates](https://docs.rke2.io/security/certificates) doc
 
 - As root user, Execute RKE2 installation script via command:
 ```
-  curl -sfL https://get.rke2.io |  sh -
+  sudo curl -sfL https://get.rke2.io |  sh -
 ```
 
 - Add permanent path to rke2 binary (`/opt/rke2/bin`) with adding into $PATH variable of file `/etc/environment`, and add KUBECONFIG environment variable:
@@ -252,12 +252,7 @@ Distributes and S3-compatible storage system deployed on Linux OS for commond bl
 ## Monitoring & Logging
 
 ## Networking
-By default, NetworkManager (configuration file at __/etc/NetworkManager/NetworkManager.conf__) is started by Ubuntu (and mananing dynamic resolv.conf update) and status can be checked via command: `sudo systemctl status systemd-resolved`.
-
-- Creation of extended CoreDNS configuration via added file `/var/lib/rancher/rke2/server/manifests/rke2-coredns-config.yaml` including:
-```
-
-```
+By default, NetworkManager (configuration file at __/etc/NetworkManager/NetworkManager.conf__) is started by Ubuntu (and managing dynamic resolv.conf update) and status can be checked via command: `sudo systemctl status systemd-resolved`.
 
 ### Container Network Interface (CNI)
 Canal solution is deployed as CNI plugin.