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