dhi.io/fluent-bit-chart
Fluent Bit Helm chart
Fluent Bit is an open source data collector for unified logging layer.
Installing the chart
Installation steps
All examples in this guide use the public chart and images. If you've mirrored the repository for your own use (for example, to your Docker Hub namespace), update your commands to reference the mirrored chart instead of the public one.
For example:
- Public chart:
dhi.io/<repository>:<tag> - Mirrored chart:
<your-namespace>/dhi-<repository>:<tag>
For more details about customizing the chart to reference other images, see the documentation.
Step 1: Optional. Mirror the Helm chart and/or its images to your own registry
To optionally mirror a chart to your own third-party registry, you can follow the instructions in How to mirror an image for either the chart, the image, or both.
The same regctl tool that is used for mirroring container images can also be used for mirroring Helm charts, as Helm
charts are OCI artifacts.
For example:
regctl image copy \
"${SRC_CHART_REPO}:${TAG}" \
"${DEST_REG}/${DEST_CHART_REPO}:${TAG}" \
--referrers \
--referrers-src "${SRC_ATT_REPO}" \
--referrers-tgt "${DEST_REG}/${DEST_CHART_REPO}" \
--force-recursive
Step 2: Create a Kubernetes secret for pulling images
The Docker Hardened Images that the chart uses require authentication. To allow your Kubernetes cluster to pull those images, you need to create a Kubernetes secret with your Docker Hub credentials or with the credentials for your own registry.
Follow the authentication instructions for DHI in Kubernetes.
For example:
kubectl create secret docker-registry helm-pull-secret \
--docker-server=dhi.io \
--docker-username=<Docker username> \
--docker-password=<Docker token> \
--docker-email=<Docker email>
Step 3: Install the Helm chart
To install the chart, use helm install. Make sure you use helm login to log in before running helm install.
Optionally, you can also use the --dry-run flag to test the installation without actually installing anything.
helm install my-fluent-bit oci://dhi.io/fluent-bit-chart --version <version> \
--set "imagePullSecrets[0].name=helm-pull-secret" \
Replace <version> accordingly. If the chart is in your own registry or repository, replace dhi.io with your own
registry and namespace. Replace helm-pull-secret with the name of the image pull secret you created earlier.
Step 4: Verify the installation
The deployment's pod should show up and running almost immediately:
$ kubectl get all
NAME READY STATUS RESTARTS AGE
pod/my-fluent-bit-chart-m4l6l 1/1 Running 0 28s
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
service/kubernetes ClusterIP 10.43.0.1 <none> 443/TCP 44s
service/my-fluent-bit-chart ClusterIP 10.43.96.255 <none> 2020/TCP 28s
NAME DESIRED CURRENT READY UP-TO-DATE AVAILABLE NODE SELECTOR AGE
daemonset.apps/my-fluent-bit-chart 1 1 1 1 1 <none> 28s
To test that all works, get the fluent-bit pod name:
export POD_NAME=$(kubectl get pods --namespace default -l "app.kubernetes.io/name=fluent-bit-chart,app.kubernetes.io/instance=my-fluent-bit" -o jsonpath="{.items[0].metadata.name}")
Open a port-forwarding rule:
kubectl --namespace default port-forward $POD_NAME 2020:2020
And from another session you can query the fluent-bit API at port 2020:
curl http://127.0.0.1:2020
{"fluent-bit":{"version":"4.2.0","edition":"Community","flags":["FLB_HAVE_SYS_WAIT_H","FLB_HAVE_SIMD","FLB_HAVE_IN_STORAGE_BACKLOG","FLB_HAVE_CHUNK_TRACE","FLB_HAVE_PARSER","FLB_HAVE_RECORD_ACCESSOR","FLB_HAVE_STREAM_PROCESSOR","FLB_HAVE_UNICODE_ENCODER","FLB_EVENT_LOOP_AUTO_DISCOVERY","FLB_HAVE_TLS","FLB_HAVE_OPENSSL","FLB_HAVE_METRICS","FLB_HAVE_PROFILES","FLB_HAVE_WASM","FLB_HAVE_AWS","FLB_HAVE_AWS_CREDENTIAL_PROCESS","FLB_HAVE_SIGNV4","FLB_HAVE_SQLDB","FLB_LOG_NO_CONTROL_CHARS","FLB_HAVE_METRICS","FLB_HAVE_HTTP_SERVER","FLB_HAVE_SYSTEMD","FLB_HAVE_SYSTEMD_SDBUS","FLB_HAVE_FORK","FLB_HAVE_GMTOFF","FLB_HAVE_TIME_ZONE","FLB_HAVE_UNIX_SOCKET","FLB_HAVE_LITTLE_ENDIAN_SYSTEM","FLB_HAVE_LIBYAML","FLB_HAVE_ATTRIBUTE_ALLOC_SIZE","FLB_HAVE_PROXY_GO","FLB_HAVE_JEMALLOC","FLB_HAVE_LIBBACKTRACE","FLB_HAVE_REGEX","FLB_HAVE_UTF8_ENCODER","FLB_HAVE_LUAJIT","FLB_HAVE_ACCEPT4","FLB_HAVE_INOTIFY","FLB_HAVE_GETENTROPY","FLB_HAVE_GETENTROPY_SYS_RANDOM"]}}