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Set k3s to use mysql as datastore, not etcd #66

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merged 2 commits into from
May 30, 2024
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Set k3s to use mysql as datastore, not etcd #66

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Set k3s to use mysql as datastore, not etcd
tyler-romero May 30, 2024
337a6b5
Update deploy/balena-k3s/server/server.sh
tyler-romero May 30, 2024
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13 changes: 6 additions & 7 deletions deploy/balena-k3s/server/server.sh
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Expand Up @@ -6,10 +6,9 @@ set -eu
# https://docs.k3s.io/datastore/ha-embedded
# https://github.com/balena-io-experimental/balena-k3s/blob/main/server/server.sh

if [ -n "${K3S_URL:-}" ]; then
# shellcheck disable=SC2086
exec /bin/k3s server --server "${K3S_URL}" ${EXTRA_K3S_SERVER_ARGS:-}
else
# shellcheck disable=SC2086
exec /bin/k3s server --cluster-init ${EXTRA_K3S_SERVER_ARGS:-}
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The --cluster-init flag is what tells k3s to use etcd. This server.sh script I coopted from the balena-k3s repo is meant to allow users to setup multi-node clusters, but we dont care about doing that here.

fi

# NOTE: this script is only intended to support a single-node "cluster". Multi-node
# clusters require using ectd as a datastore, instead of the default mysql. Etcd
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# doesnt work well when the underlying storage is an sd card, like on raspberry pi.
# If we ever do want multi-node we'd have to pass `--server` or `--cluster-init` args to k3s
exec /bin/k3s server ${EXTRA_K3S_SERVER_ARGS:-}
2 changes: 1 addition & 1 deletion deploy/bin/cluster_setup.sh
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Expand Up @@ -92,7 +92,7 @@ if [[ -n "${EDGE_CONFIG}" ]]; then
echo "Creating config from EDGE_CONFIG env var"
$K create configmap edge-config --from-literal="edge-config.yaml=${EDGE_CONFIG}"
else
echo "Creating config from configs/edeg-config.yaml"
echo "Creating config from configs/edge-config.yaml"
$K create configmap edge-config --from-file=configs/edge-config.yaml
fi

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