107 lines
3.6 KiB
Bash
107 lines
3.6 KiB
Bash
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#!/bin/bash
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# Tier-1 dispatch for loki component operations.
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set -euo pipefail
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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cd "$SCRIPT_DIR"
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[ -f "${SCRIPT_DIR}/env-loki" ] && source "${SCRIPT_DIR}/env-loki"
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LOKI_NAME="${LOKI_NAME:-loki}"
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LOKI_NAMESPACE="${LOKI_NAMESPACE:-observability}"
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LOKI_PORT="${LOKI_PORT:-3100}"
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LOKI_STORAGE_CLASS="${LOKI_STORAGE_CLASS:-longhorn-single}"
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LOKI_STORAGE_SIZE="${LOKI_STORAGE_SIZE:-5Gi}"
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LOKI_STORAGE_BACKEND="${LOKI_STORAGE_BACKEND:-filesystem}"
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CMD_TSK="${CMD_TSK:-${1:-install}}"
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source "${SCRIPT_DIR}/loki-lib.sh"
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_resolve_kubeconfig() {
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if [ -n "${KUBECONFIG:-}" ] && [ -f "$KUBECONFIG" ]; then
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return
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fi
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for candidate in /var/lib/k0s/pki/admin.conf /etc/kubernetes/admin.conf /root/.kube/config; do
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if [ -f "$candidate" ]; then
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export KUBECONFIG="$candidate"
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return
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fi
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done
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echo "ERROR: kubeconfig not found — set KUBECONFIG explicitly" >&2; exit 1
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}
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_do_install() {
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[ -f "${SCRIPT_DIR}/_credentials.env" ] && source "${SCRIPT_DIR}/_credentials.env"
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if [ "${LOKI_STORAGE_BACKEND}" = "s3" ]; then
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_require_env LOKI_S3_ACCESS_KEY
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_require_env LOKI_S3_SECRET_KEY
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_kubectl create secret generic loki-s3-credentials \
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--namespace "$LOKI_NAMESPACE" \
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--from-literal=LOKI_S3_ACCESS_KEY="$LOKI_S3_ACCESS_KEY" \
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--from-literal=LOKI_S3_SECRET_KEY="$LOKI_S3_SECRET_KEY" \
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--dry-run=client -o yaml | _kubectl apply -f -
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else
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echo " [skip] storage_backend=${LOKI_STORAGE_BACKEND} — no S3 credentials secret needed"
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fi
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for manifest in namespace.yaml configmap.yaml pvc.yaml deployment.yaml service.yaml; do
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local path="$SCRIPT_DIR/manifests/${manifest}"
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[ -f "$path" ] && _kubectl apply -f "$path"
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done
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echo "Waiting for ${LOKI_NAME} pod to be ready..."
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_wait_for_pod 180
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echo "${LOKI_NAME} installed in namespace ${LOKI_NAMESPACE}"
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}
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_do_update() {
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for manifest in configmap.yaml deployment.yaml; do
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local path="$SCRIPT_DIR/manifests/${manifest}"
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[ -f "$path" ] && _kubectl apply -f "$path"
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done
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_kubectl rollout restart "deployment/${LOKI_NAME}" --namespace "$LOKI_NAMESPACE"
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_wait_for_pod 180
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echo "${LOKI_NAME} updated"
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}
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_do_delete() {
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for manifest in deployment.yaml service.yaml; do
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local path="$SCRIPT_DIR/manifests/${manifest}"
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[ -f "$path" ] && _kubectl delete -f "$path" --ignore-not-found
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done
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echo "${LOKI_NAME} deleted from namespace ${LOKI_NAMESPACE}"
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}
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_do_restart() {
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_kubectl rollout restart "deployment/${LOKI_NAME}" --namespace "$LOKI_NAMESPACE"
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_wait_for_pod 180
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echo "${LOKI_NAME} restarted"
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}
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_do_health() {
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local pod
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pod=$(_pod_name 2>/dev/null || true)
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if [ -z "$pod" ]; then
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echo "UNHEALTHY: no loki pod found in namespace ${LOKI_NAMESPACE}" >&2; exit 1
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fi
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if _kubectl exec --namespace "$LOKI_NAMESPACE" "$pod" -- \
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wget -qO- "http://localhost:${LOKI_PORT}/ready" >/dev/null 2>&1; then
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echo "HEALTHY: ${LOKI_NAME} responding on /ready"
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else
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echo "UNHEALTHY: ${LOKI_NAME} did not respond on /ready" >&2; exit 1
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fi
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}
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_resolve_kubeconfig
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case "$CMD_TSK" in
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install) [ -f "$SCRIPT_DIR/run-init.sh" ] && exec bash "$SCRIPT_DIR/run-init.sh"; _do_install ;;
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update) [ -f "$SCRIPT_DIR/run-update.sh" ] && exec bash "$SCRIPT_DIR/run-update.sh"; _do_update ;;
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delete) [ -f "$SCRIPT_DIR/run-delete.sh" ] && exec bash "$SCRIPT_DIR/run-delete.sh"; _do_delete ;;
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restart) [ -f "$SCRIPT_DIR/run-restart.sh" ] && exec bash "$SCRIPT_DIR/run-restart.sh"; _do_restart ;;
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health) _do_health ;;
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*) echo "ERROR: unknown CMD_TSK='${CMD_TSK}'. Valid: install|update|delete|restart|health" >&2; exit 1 ;;
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esac
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