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sysadmin-i-sys255/lab03-linux.md

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+---
+description: >-
+  In this lab we set up the DHCP server in Linux, but we haven't added any DHCP
+  functionality yet, just networking configurations and adding a user
+---
+
+# Lab03 - Linux Setup
+
+## mntui
+* network manager TUI
+* used to set up network configuration & can change hostname
+* (remember to set search domain to charlotte.local)
+* `systemctl restart network` or `systemctl restart NetworkManager` to restart network after config change
+
+
+## set hostname
+`hostnamectl set-hostname dhcp01-charlotte`
+
+## creating privileged user
+* `useradd charlotte`
+* `passwd charlotte`
+* `usermod -aG (wheel/sudo) charlotte` - RH=wheel, Debain=sudo
+
+
+## ipconfig DNS commands
+* `/flushdns`: clears DNS cache and forces the computer to regain all DNS entries from the DNS server
+* `/registerdns`: re-registers all domain names and IP addresses