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monitor-all: read container IP from the host side (#17686)

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The CT check resolved the IP by running ip inside the guest via pct
exec, which depends on the guest having it installed. If not, this
always comes back empty, so the container is restarted every cycle
despite answering ping. lxc-info reports the addresses from the
host without running anything inside the guest.

Fixes #17685
This commit is contained in:
Jason O'Brien 2026-10-05 01:16:45 -05:00 • committed by GitHub
parent 1142165f73
commit aaa341b6b2
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1 changed files with 3 additions and 2 deletions
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5
tools/pve/monitor-all.sh
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@ -110,8 +110,9 @@ while true; do
pct start "$instance" >/dev/null 2>&1
continue
fi
# Not every container names its interface eth0.
IP=$(pct exec "$instance" -- ip -4 -o addr show scope global 2>/dev/null | awk '{print $4}' | cut -d/ -f1 | head -n1)
# Read the IP from the host side; pct exec depends on tools inside the
# guest, which minimal/OCI images may lack.
IP=$(lxc-info -n "$instance" -iH 2>/dev/null | awk '/^[0-9.]+$/ && !/^(127|169\.254)\./ {print; exit}')
if [ -z "$IP" ] || ! ping -c 1 -W 2 "$IP" >/dev/null 2>&1; then
echo "$(date): CT $instance is not responding, restarting..."
pct stop "$instance" >/dev/null 2>&1