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#!/bin/bash
# Copyright 2021 Calyptia, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
set -eux
# Simple smoke test script using helm deployment to run up a deployment then
# ensure we can access the web server.
# Assumes a kubectl context is set up already, e.g. `kind create cluster`
NAMESPACE=${NAMESPACE:-default}
REGISTRY=${REGISTRY:-ghcr.io}
IMAGE_NAME=${IMAGE_NAME:-fluent/fluent-bit}
IMAGE_TAG=${IMAGE_TAG:-latest}
# Deploy using Helm chart
helm repo add fluent-bit https://fluent.github.io/helm-charts || helm repo add fluent-bit https://fluent.github.io/helm-charts/
helm repo update
helm upgrade --install fluent-bit fluent-bit/fluent-bit \
--namespace "$NAMESPACE" --create-namespace \
--wait \
--set kind=Deployment \
--set replicaCount=1 \
--set image.repository="$REGISTRY/$IMAGE_NAME" \
--set image.tag="$IMAGE_TAG"
# Output some information on pods running
kubectl describe -n "$NAMESPACE" pods --selector='app.kubernetes.io/name=fluent-bit'
while true; do
# Find a free ephemeral port to use for port forwarding
FREE_PORTNUM=$(shuf -i 1025-65535 -n 1)
if ! lsof -Pi ":$FREE_PORTNUM" -sTCP:LISTEN; then
# Forward to the deployment web server port
kubectl port-forward -n "$NAMESPACE" deployment/fluent-bit "$FREE_PORTNUM":2020 &
PF_PID=$!
# Wait a bit
sleep 60
# Provide debug output in case it is required
kubectl describe -n "$NAMESPACE" pods --selector='app.kubernetes.io/name=fluent-bit'
# Check we are still functional
curl -v localhost:"$FREE_PORTNUM" | jq
curl -v localhost:"$FREE_PORTNUM"/api/v1/metrics | jq
curl -v localhost:"$FREE_PORTNUM"/api/v1/uptime | jq
curl -v localhost:"$FREE_PORTNUM"/api/v1/health
kill -9 $PF_PID
exit 0
fi
done
echo "Unable to find free port"
exit 1
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