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July 29, 2018 00:05
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Update /etc/hosts of two machines with pre configured host name. Helpful if there's no DNS resolve unit in the local network.
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#!/bin/bash | |
if [ $# -eq 0 ] | |
then | |
echo "supply the peer IP address" | |
exit 1 | |
fi | |
SUBNET_PREFIX=192 | |
MY_HOST=me.test | |
PEER_HOST=me.test.peer | |
PEER_USER= | |
MY_ADDRESS=$(ifconfig | grep $SUBNET_PREFIX | awk '{ print $2 }') | |
echo "Setting $MY_HOST IP to" $MY_ADDRESS | |
echo "Setting $PEER_HOST IP to" $1 | |
sed -i "s/.*$PEER_HOST/$1 $PEER_HOST/g; s/.*$MY_HOST$/$MY_ADDRESS $MY_HOST/g" /etc/hosts | |
echo "Testing" | |
ping -c 2 $MY_HOST | |
ping -c 2 $PEER_HOST | |
echo "Update peer hosts" | |
ssh -t $PEER_USER@$PEER_HOST "sudo sed -i '' 's/.*$PEER_HOST/$1 $PEER_HOST/g; s/.*$MY_HOST$/$MY_ADDRESS $MY_HOST/g' /etc/hosts" |
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