18 lines
848 B
Bash
18 lines
848 B
Bash
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#!/bin/bash
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# Timestamped liveness log for the Management VLAN during the bond0 -> bond0.1 move.
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#
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# The question this answers is not "did it work" but "for how long was it not
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# working, and what held the VIP while it was not". Both are invisible after the
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# fact: VRRP reconverges and leaves no trace of who was master during the gap.
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#
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# ./vlan1-move-monitor.sh > /tmp/move.log &
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# Columns: time VIP-ping R1-ping R2-ping VIP-mac
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VIP="${VIP:-172.31.1.1}"; R1="${R1:-172.31.1.252}"; R2="${R2:-172.31.1.253}"
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p() { ping -c1 -W1 -n "$1" >/dev/null 2>&1 && echo up || echo DOWN; }
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while :; do
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mac="$(ip neigh show "$VIP" 2>/dev/null | awk '{for(i=1;i<=NF;i++) if($i=="lladdr") print $(i+1)}')"
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printf '%s vip=%-4s r1=%-4s r2=%-4s vipmac=%s\n' \
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"$(date +%H:%M:%S)" "$(p "$VIP")" "$(p "$R1")" "$(p "$R2")" "${mac:-none}"
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sleep 1
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done
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