Created
March 31, 2020 22:28
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EC2で接続されているネットワーク情報をインスタンス内で取得
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| #!/bin/bash | |
| set -eu | |
| get_meta_data() { | |
| curl --retry 3 --silent --fail http://169.254.169.254/latest/meta-data/$1 | |
| } | |
| PUB_MAC=$( get_meta_data mac ) | |
| for i in $( ls /sys/class/net ); do | |
| if [ "$i" == "lo" ]; then continue; fi | |
| if [ "$(cat /sys/class/net/$i/address)" == "$PUB_MAC" ]; then | |
| VPC_CIDR_RANGE=$( get_meta_data network/interfaces/macs/$PUB_MAC/vpc-ipv4-cidr-block ) | |
| PUB_IF=$i | |
| fi | |
| done | |
| PUB_IP=$( ip addr show $PUB_IF | perl -nlE 'if(m#inet ([^/]+)#) { say $1 }' ) | |
| echo "PUB_IF: $PUB_IF" | |
| echo "PUB_MAC: $PUB_MAC" | |
| echo "PUB_IP: $PUB_IP" | |
| echo "VPC_CIDR_RANGE: $VPC_CIDR_RANGE" |
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