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46 lines
1.4 KiB
Bash
46 lines
1.4 KiB
Bash
#!/usr/bin/env bash
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# Join an additional K3s server (pi.prole.org) to the existing cluster using k3sup.
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# Default topology: HA embedded etcd with at least two servers.
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set -euo pipefail
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: "${K3S_EXISTING_SERVER_HOST:=raspberry.prole.org}"
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: "${K3S_EXISTING_SERVER_USER:=pi}"
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: "${K3S_ADDITIONAL_SERVER_HOST:=pi.prole.org}"
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: "${K3S_ADDITIONAL_SERVER_USER:=pi}"
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: "${K3S_SSH_KEY:=$HOME/.ssh/id_rsa}"
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: "${K3S_VERSION:=}"
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# You likely want your public name(s) here so clients can connect via hostname
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# You may include multiple --tls-san by space-separating them.
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K3S_EXTRA_ARGS_DEFAULT="--tls-san ${K3S_EXISTING_SERVER_HOST} --tls-san ${K3S_ADDITIONAL_SERVER_HOST}"
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: "${K3S_EXTRA_ARGS:=${K3S_EXTRA_ARGS_DEFAULT}}"
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echo "[info] Joining ${K3S_ADDITIONAL_SERVER_HOST} as additional K3s server to cluster at ${K3S_EXISTING_SERVER_HOST}"
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if ! command -v k3sup >/dev/null 2>&1; then
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echo "[error] k3sup is not installed. See https://github.com/alexellis/k3sup" >&2
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exit 1
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fi
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K3SUP_ARGS=(join \
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--server \
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--ip "${K3S_ADDITIONAL_SERVER_HOST}" \
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--user "${K3S_ADDITIONAL_SERVER_USER}" \
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--ssh-key "${K3S_SSH_KEY}" \
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--server-ip "${K3S_EXISTING_SERVER_HOST}" \
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--server-user "${K3S_EXISTING_SERVER_USER}" \
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--k3s-extra-args "${K3S_EXTRA_ARGS}"
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)
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if [[ -n "${K3S_VERSION}" ]]; then
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K3SUP_ARGS+=(--k3s-version "${K3S_VERSION}")
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fi
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set -x
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k3sup "${K3SUP_ARGS[@]}"
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set +x
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echo "[ok] ${K3S_ADDITIONAL_SERVER_HOST} joined as an additional K3s server"
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