40 lines
937 B
Bash
40 lines
937 B
Bash
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#!/bin/bash
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set -x
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# IPs file already exist
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if [ -f .k8s-ips ]; then
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echo "NOTICE: .k8s-ips already exists"
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exit 0
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fi
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# Create file with vagrant-k8s private DHCP IPs
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echo "declare -a K8S_NODES" > .k8s-ips
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for i in {1..3}; do
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IP=$(vagrant ssh "node$i" -c "hostname -I | cut -d' ' -f2" 2>/dev/null)
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echo "K8S_NODES[$i]=$IP" >> .k8s-ips
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done
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# Source new IP file
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# shellcheck disable=SC1091
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source .k8s-ips
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# Grab last octet on IP addresses (assuming /24)
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last_octets=()
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for i in {1..3}; do
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last_octets+=("$(echo "${K8S_NODES[$i]}" | rev | cut -d. -f1 | rev)")
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done
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# Generate random octet and ensure it's not taken
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while true
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do
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available=true
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random_octet="$(shuf -i2-254 -n1)"
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for i in "${last_octets[@]}"; do
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[ "$random_octet" == "${i::-1}" ] && available=false
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done
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[ "$available" == true ] && break
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done
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# Add keepalived IP address in order
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sed -i "/declare/a K8S_NODES[0]=${K8S_NODES[1]%.*}.$random_octet" .k8s-ips
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