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feat: improve motd memory usage for lxc

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This commit is contained in:
Simon Cornet 2025-10-25 14:57:21 +02:00
commit ec743728c2
1 changed files with 11 additions and 4 deletions
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15
templates/motd/alpine-motd.sh.j2
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@ -1,5 +1,4 @@
#!/bin/sh
# distribution information
if [ -f /etc/os-release ]; then
. /etc/os-release
@ -11,8 +10,17 @@ fi
# disk usage
disk_usage=$(df -h / | awk 'NR==2 {print $3 " / " $2 " (" $5 ")"}')
# memory usage
memory_usage=$(free -m | awk 'NR==2 {print $3 " MB / " $2 " MB (" int($3/$2*100) "%)"}')
# memory usage (cgroup aware for LXC)
if [ -f /sys/fs/cgroup/memory.current ]; then
mem_used_kb=$(awk '{print int($1/1024)}' /sys/fs/cgroup/memory.current)
mem_total_kb=$(awk '/MemTotal/ {print $2}' /proc/meminfo)
mem_used_mb=$((mem_used_kb / 1024))
mem_total_mb=$((mem_total_kb / 1024))
mem_pct=$((mem_used_kb * 100 / mem_total_kb))
memory_usage="$mem_used_mb MB / $mem_total_mb MB ($mem_pct%)"
else
memory_usage=$(free -m | awk 'NR==2 {print $3 " MB / " $2 " MB (" int($3/$2*100) "%)"}')
fi
# display motd
echo "Welcome to $(hostname)!"
@ -20,4 +28,3 @@ echo ""
echo -e "$linux_distribution"
echo "Disk Usage: $disk_usage"
echo "Memory Usage: $memory_usage"
echo ""