38 lines
934 B
Bash
38 lines
934 B
Bash
#!/bin/bash
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# This script:
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# - assumes there are 2 network interfaces connected to $PUBLIC_SUBNET and $PRIVATE_SUBNET respectively
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# - finds IP addresses from those interfaces using `ip` command
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# - exports the IPs as variables
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function getIpForSubnet {
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if [ -z $1 ]; then
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echo Subnet parameter undefined
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exit 1
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else
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ip r | grep $1 | sed 's/.*src\ \([^\ ]*\).*/\1/'
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fi
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}
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if [ -z $PUBLIC_SUBNET ]; then
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PUBLIC_IP=0.0.0.0
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echo PUBLIC_SUBNET undefined. PUBLIC_IP defaults to $PUBLIC_IP
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else
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export PUBLIC_IP=`getIpForSubnet $PUBLIC_SUBNET`
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fi
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if [ -z $PRIVATE_SUBNET ]; then
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PRIVATE_IP=127.0.0.1
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echo PRIVATE_SUBNET undefined. PRIVATE_IP defaults to $PRIVATE_IP
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else
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export PRIVATE_IP=`getIpForSubnet $PRIVATE_SUBNET`
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fi
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echo Routing table:
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ip r
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echo PUBLIC_SUBNET=$PUBLIC_SUBNET
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echo PRIVATE_SUBNET=$PRIVATE_SUBNET
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echo PUBLIC_IP=$PUBLIC_IP
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echo PRIVATE_IP=$PRIVATE_IP
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