reboottest

#!/bin/bash

export LC_ALL=C
IP="${1-192.168.100.12}"
SSH_OPTS="-o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no -o ConnectTimeout=5"

cnt=0
old_boot_id=""
while true; do
    cnt=$((cnt+1))
    echo "------ $(date) attempt $cnt"

    failcnt=0
    while ! ssh $SSH_OPTS "root@${IP}" "uptime"; do
        failcnt=$((failcnt+1))
        echo "----- $(date) failed attempt $failcnt"
        if [ "$failcnt" -gt 30 ]; then
            echo "---- $(date) unable to reboot: BAD STATE"
            exit 5
        fi
        sleep 5
    done
    new_boot_id="$(ssh $SSH_OPTS "root@${IP}" "cat /proc/sys/kernel/random/boot_id")"
    if [ -n "$old_boot_id" ] && [ "$new_boot_id" = "$old_boot_id" ]; then
        echo "----- $(date) ERROR: reboot didn't work"
        exit 4
    fi
    old_boot_id="$new_boot_id"
    ssh $SSH_OPTS "root@${IP}" "reboot"
    sleep 5
done