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Setup tailscale on instances, create a common network script
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@ -1,19 +1,7 @@
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#!/usr/bin/env bash
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set -xeuo pipefail
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# Add cloudflare DNS as a fallback
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# Get default gateway interface
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IFACE=$(ip --json route list | jq '.[]|select(.dst == "default").dev' --raw-output)
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# `Link 2 (eth0): 172.31.0.2`
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ETH_DNS=$(resolvectl dns "$IFACE") || :
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CLOUDFLARE_NS=1.1.1.1
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if [[ "$ETH_DNS" ]] && [[ "${ETH_DNS#*: }" != *"$CLOUDFLARE_NS"* ]]; then
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# Cut the leading legend
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ETH_DNS=${ETH_DNS#*: }
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# shellcheck disable=SC2206
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new_dns=(${ETH_DNS} "$CLOUDFLARE_NS")
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resolvectl dns "$IFACE" "${new_dns[@]}"
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fi
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bash /usr/local/share/scripts/init-network.sh
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# tune sysctl for network performance
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cat > /etc/sysctl.d/10-network-memory.conf << EOF
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@ -60,19 +60,7 @@ export RUNNER_URL="https://github.com/${RUNNER_ORG}"
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INSTANCE_ID=$(ec2metadata --instance-id)
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export INSTANCE_ID
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# Add cloudflare DNS as a fallback
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# Get default gateway interface
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IFACE=$(ip --json route list | jq '.[]|select(.dst == "default").dev' --raw-output)
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# `Link 2 (eth0): 172.31.0.2`
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ETH_DNS=$(resolvectl dns "$IFACE") || :
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CLOUDFLARE_NS=1.1.1.1
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if [[ "$ETH_DNS" ]] && [[ "${ETH_DNS#*: }" != *"$CLOUDFLARE_NS"* ]]; then
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# Cut the leading legend
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ETH_DNS=${ETH_DNS#*: }
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# shellcheck disable=SC2206
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new_dns=(${ETH_DNS} "$CLOUDFLARE_NS")
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resolvectl dns "$IFACE" "${new_dns[@]}"
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fi
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bash /usr/local/share/scripts/init-network.sh
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# combine labels
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RUNNER_TYPE=$(/usr/local/bin/aws ec2 describe-tags --filters "Name=resource-id,Values=$INSTANCE_ID" --query "Tags[?Key=='github:runner-type'].Value" --output text)
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@ -153,6 +153,34 @@ apt-get update
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apt-get install tailscale --yes --no-install-recommends
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# Create a common script for the instances
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mkdir /usr/local/share/scripts -p
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cat > /usr/local/share/scripts/init-network.sh << 'EOF'
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#!/usr/bin/env bash
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# Add cloudflare DNS as a fallback
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# Get default gateway interface
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IFACE=$(ip --json route list | jq '.[]|select(.dst == "default").dev' --raw-output)
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# `Link 2 (eth0): 172.31.0.2`
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ETH_DNS=$(resolvectl dns "$IFACE") || :
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CLOUDFLARE_NS=1.1.1.1
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if [[ "$ETH_DNS" ]] && [[ "${ETH_DNS#*: }" != *"$CLOUDFLARE_NS"* ]]; then
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# Cut the leading legend
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ETH_DNS=${ETH_DNS#*: }
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# shellcheck disable=SC2206
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new_dns=(${ETH_DNS} "$CLOUDFLARE_NS")
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resolvectl dns "$IFACE" "${new_dns[@]}"
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fi
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# Setup tailscale, the very first action
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TS_API_CLIENT_ID=$(aws ssm get-parameter --region us-east-1 --name /tailscale/api-client-id --query 'Parameter.Value' --output text --with-decryption)
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TS_API_CLIENT_SECRET=$(aws ssm get-parameter --region us-east-1 --name /tailscale/api-client-secret --query 'Parameter.Value' --output text --with-decryption)
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export TS_API_CLIENT_ID TS_API_CLIENT_SECRET
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TS_AUTHKEY=$(get-authkey -tags tag:svc-core-ci-github -reusable -ephemeral)
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tailscale up --ssh --auth-key="$TS_AUTHKEY" --hostname="ci-runner-$INSTANCE_ID"
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EOF
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# The following line is used in aws TOE check.
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touch /var/tmp/clickhouse-ci-ami.success
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# END OF THE SCRIPT
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