#!/bin/bash

if [ -z "$1" ]; then
    containers=`pct list | grep stopped | awk '{print $1 " "}'`
else
    containers=$1
fi

echo "restarting containers: $containers"

for m in $containers; do
    lxc-start -n $m &
    echo "force started $m"
done

echo "sleeping for 2 minutes while containers start"
sleep 120

for m in $containers; do
    echo "shutting down $m"
    pct shutdown $m;
    echo "starting $m"
    pct start $m &
done

pct list   # note the vmid, replace 100 101 below as appropriate

for m in 100 101; do lxc-start -n $m & done

# after a minute or so you'll see the background tasks finish in the console
pct list   # lxc containers should be running

# Note, that `systemd` will still show the tasks as failed since it didn't
# start them, so now lets stop/start them properly
for m in 100 101; do pct shutdown $m; pct start $m & done

[root@proxmox1 ~]
# pct start 125
pJob for pve-container@125.service failed because a timeout was exceeded.
See "systemctl status pve-container@125.service" and "journalctl -xe" for details.
command 'systemctl start pve-container@125' failed: exit code 1

[root@proxmox1 ~]
# /usr/bin/lxc-start -n 125 -F

# good long wait, over a minute
# login and then `poweroff`

[root@proxmox1 ~]
# pct start 125 && echo $?
0

systemctl edit avahi-daemon.service

[Service]
ExecStart=
ExecStart=/usr/sbin/avahi-daemon -s --no-rlimits

hosts:          files dns

hosts:          files mdns4_minimal [NOTFOUND=return] dns