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Closes kairos-io/kairos#638 Signed-off-by: tyzbit <[email protected]>
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| FROM alpine as build | ||
| ENV VERSION=2.1.1 | ||
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| ADD https://github.com/fluxcd/flux2/releases/download/v${VERSION}/flux_${VERSION}_linux_amd64.tar.gz /tmp | ||
| RUN tar xzf /tmp/flux_${VERSION}_linux_amd64.tar.gz -C / && \ | ||
| rm /tmp/flux_${VERSION}_linux_amd64.tar.gz | ||
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| FROM scratch | ||
| COPY --from=build /flux /flux | ||
| COPY ./bootstrap.sh /bootstrap.sh |
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| Original file line number | Diff line number | Diff line change |
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| #!/bin/bash | ||
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| set -x | ||
| # Override with the `env` key if necessary | ||
| export KUBECONFIG=/etc/rancher/k3s/k3s.yaml | ||
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| scriptdir="$( cd -- "$(dirname "$0")" || return >/dev/null 2>&1 ; pwd -P )" | ||
| flux="$scriptdir/flux" | ||
| short=2 | ||
| long=900 | ||
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| cleanup() { | ||
| timeout $short kubectl delete configmap -n default flux-boostrap | ||
| } | ||
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| # Don't bootstrap if the cluster is already bootstrapped | ||
| if [[ $($flux version 2>/dev/null; echo $?) -eq 0 ]]; then | ||
| echo "Flux is already bootstrapped, exiting..." | ||
| exit 0 | ||
| fi | ||
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| # Determine what VCS we need to bootstrap | ||
| for vcs in bitbucket_server git github gitlab; do | ||
| if [[ $(kairos-agent config get flux.$vcs) != "null" ]]; then | ||
| version_control=$vcs | ||
| break | ||
| fi | ||
| done | ||
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| if [[ "${version_control}x" == "x" ]]; then | ||
| echo "Unable to determine what version control provider to use, exiting..." | ||
| exit 1 | ||
| fi | ||
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| # Get flux envs and settings for our VCS | ||
| mapfile -t envs < <(kairos-agent config get "flux.env") | ||
| mapfile -t args < <(kairos-agent config get "flux.$version_control") | ||
| declare -a cmdline | ||
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| # Set environment variables | ||
| # These are likely sensitive | ||
| set +x | ||
| for setting in "${envs[@]}"; do | ||
| env=$(echo "$setting" | cut -d: -f1) | ||
| value=$(echo "$setting" | cut -d':' -f2 | sed -E 's/^ //g') | ||
| if [[ "${value}x" != "x" ]]; then | ||
| export "$env"="$value" | ||
| fi | ||
| done | ||
| set -x | ||
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| # Set commandline args | ||
| for setting in "${args[@]}"; do | ||
| arg=$(echo "$setting" | cut -d: -f1) | ||
| value=$(echo "$setting" | cut -d':' -f2 | sed -E 's/^ //g') | ||
| if [[ "${value}x" != "x" ]]; then | ||
| cmdline+=("--$arg" "$value") | ||
| fi | ||
| done | ||
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| # Try to bootstrap Flux for 30 minutes, sleep 15 seconds between attempts | ||
| minutes=30 | ||
| sleep=15 | ||
| retry_attempt=1 | ||
| active="false" | ||
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| if [[ "${#cmdline[@]}" -eq 0 ]]; then | ||
| echo "Flux was not configured, not running any Flux commands" | ||
| exit 2 | ||
| else | ||
| while [[ $retry_attempt -le "$(( minutes * 60 / sleep ))" ]]; do | ||
| if [[ "$active" != "true" ]]; then | ||
| # Ensure only one host tries to bootstrap, whichever makes the configmap first | ||
| if ! timeout $short kubectl version &> /dev/null; then | ||
| echo "Kubernetes API not ready yet, sleeping" | ||
| else | ||
| if ! timeout $short kubectl create configmap flux-bootstrap --from-literal=hostname="$(hostname)"; then | ||
| echo "Unable to create configmap, another node may be active" | ||
| fi | ||
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| # The configmap exists but we must finally check if the hostname matches | ||
| if [[ "$(timeout $short kubectl get configmap -n default flux-bootstrap -o jsonpath='{.data.hostname}')" != "$(hostname)" ]]; then | ||
| echo "Flux bootstrap ConfigMap exists but another node is active, exiting..." | ||
| exit 3 | ||
| fi | ||
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| # We must be the active node | ||
| active="true" | ||
| fi | ||
| else | ||
| if timeout $long $flux bootstrap "${version_control/_/-}" "${cmdline[@]}"; then | ||
| cleanup | ||
| exit 0 | ||
| fi | ||
| fi | ||
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| echo "Install attempt $retry_attempt failed, retrying in $sleep seconds" | ||
| (( retry_attempt = retry_attempt + 1 )) | ||
| sleep $sleep | ||
| done | ||
| fi | ||
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| echo "Failed to bootstrap with Flux, timed out ($minutes minutes)" | ||
| exit 4 |