blake/nix
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

testing

Browse Source
This commit is contained in:
blake
2025-10-14 21:25:41 -05:00
parent 28856a1328
commit 0057e3f757
1 changed files with 64 additions and 27 deletions
Download Patch File Download Diff File Expand all files Collapse all files

91
modules/homelab/motd/default.nix
View File

@@ -15,32 +15,6 @@
}))
(lib.filter (s: s.unit != null))
];
# Build script body
motdScript = lib.concatStringsSep "\n" (
[
"#!/usr/bin/env bash"
"blue='\\033[34m'"
"red='\\033[31m'"
"reset='\\033[0m'"
""
"echo \"Hostname: $(hostname)\""
"echo \"Uptime: $(uptime -p)\""
"echo \"Load: $(awk '{print $1, $2, $3}' /proc/loadavg)\""
"echo"
"echo \"Service status:\""
]
++ (map (s: ''
status=$(systemctl is-active ${lib.escapeShellArg s.unit} 2>/dev/null)
if [ "$status" = "active" ]; then
printf "%b%-25s%b %s\\n" "$blue" "${s.name}" "$reset" "running"
else
printf "%b%-25s%b %s\\n" "$red" "${s.name}" "$reset" "FAILED ($status)"
fi
'')
motdServices)
++ [""]
);
in {
options.homelab.motd = {
enable = lib.mkEnableOption "enable custom homelab motd";
@@ -48,7 +22,70 @@ in {
config = lib.mkIf config.homelab.motd.enable {
# write into /etc/profile.d so shells source it at login
environment.etc."profile.d/homelab-motd.sh".text = motdScript;
environment.etc."profile.d/homelab-motd.sh".text = ''
#!/usr/bin/env bash
# Homelab MOTD — pretty status display
# Generated by NixOS
# ────────────────────────────────────────────────────────────────────────
# Colors
blue="\033[34m"
red="\033[31m"
cyan="\033[36m"
magenta="\033[35m"
bold="\033[1m"
reset="\033[0m"
# ────────────────────────────────────────────────────────────────────────
# System info
hostname=$(hostname)
nixos_ver=$(nixos-version 2>/dev/null || echo "unknown")
kernel_ver=$(uname -r)
read iface ipv4 <<< "$(ip route get 1.1.1.1 2>/dev/null | awk '/dev/ {for (i=1;i<=NF;i++) if ($i=="dev") iface=$(i+1); if ($1=="src") ip=$2;} END {print iface, ip}')"
# CPU usage (avg over 1s)
read cpu_a idle_a < <(awk '/^cpu /{print $2+$4,$5}' /proc/stat)
sleep 0.5
read cpu_b idle_b < <(awk '/^cpu /{print $2+$4,$5}' /proc/stat)
cpu_usage=$(( (100 * (cpu_b - cpu_a - (idle_b - idle_a))) / (cpu_b - cpu_a) ))
# Memory usage
read total used <<< "$(free -m | awk '/Mem:/ {print $2, $3}')"
mem_pct=$((100 * used / total))
# Uptime
uptime_fmt=$(awk '{d=int($1/86400);h=int(($1%86400)/3600);m=int(($1%3600)/60);printf("%dd %dh %dm",d,h,m)}' /proc/uptime)
# ────────────────────────────────────────────────────────────────────────
# Display system info
printf "\\n${bold}${cyan}System Info${reset}\\n"
printf " %-15s %s\\n" "Hostname:" "$hostname"
printf " %-15s %s\\n" "Interface:" "${iface:-N/A}"
printf " %-15s %s\\n" "IPv4 Address:" "${ipv4:-N/A}"
printf " %-15s %s\\n" "NixOS Version:" "$nixos_ver"
printf " %-15s %s\\n" "Kernel:" "$kernel_ver"
printf "\\n${bold}${magenta}Performance${reset}\\n"
printf " %-15s %s%%\\n" "CPU Usage:" "$cpu_usage"
printf " %-15s %s%% of %s MB\\n" "Memory Usage:" "$mem_pct" "$total"
printf " %-15s %s\\n" "Uptime:" "$uptime_fmt"
printf "\\n${bold}${blue}Service Status${reset}\\n"
# ────────────────────────────────────────────────────────────────────────
# Loop through Nix-provided list of services
${lib.concatStringsSep "\n" (map (s: ''
status=$(systemctl is-active ${lib.escapeShellArg s.unit} 2>/dev/null)
if [ "$status" = "active" ]; then
printf " ${blue}%-25s${reset} %s\\n" "${s.name}" "running"
else
printf " ${red}%-25s${reset} %s\\n" "${s.name}" "FAILED ($status)"
fi
'') motdServices)}
echo ""
'';
# make sure it is executable
environment.etc."profile.d/homelab-motd.sh".mode = "0755";