kube-fluentd

Docker Hub

A docker image for running fluentd in Kubernetes pods.

Based on:

• gcr.io/google_containers/ubuntu-slim
• Fluentd
• s6-overlay
• confd

Supported tags

• latest/0.14.14-0.9.9 (Fluentd v0.14.1４)

Naming convention for images is $FLUENTD_VERSION-$KUBE_FLUENTD_VERSION

Changelog

• 0.9.9
  • Bump Fluentd to 0.14.14 to incorporate the fix for fluent/fluentd#1485
• 0.9.8
  • Set buffer_queue_full_action to block for tail plugins so that we won't drop messages anymore
• 0.9.7
  • fluentd.conf is customizable via environment variables (#3, thanks to @cw-hayashi)
• 0.9.6
  • Fix the fluentd OOM issue when ingesting a lot of log
    • Also see fluent/fluentd#1260 for why we don't use overflow_action block
• 0.9.5
  • Remove /var/lib/apt/lists/* to save approximately 20MB of image size
• 0.9.4
  • Build confd outside of containers to save 1MB of image size
• 0.9.3
  • Switch from alpine to ubuntu-slim:0.4
  • Use jemalloc
  • Fluentd 0.14.9
• 0.9.2
  • I had fixed the wrong part of fluent.conf in 0.9.1. Now I've done it right.
  • Bump Fluentd to 0.14.2 to fix the issue reported in the metadata filter repo
• 0.9.1
  • Use multiple threads for processing as per a change in GoogleCloudPlatform/google-fluentd

Usage in Kubernetes

# (1) Provide GOOGLE_FLEUNTD_* environments appropriate values
# (2) Build the definition for a k8s secret object
$ make fluentd.secret.yaml
# (3) Create the secret object from the definition
$ kubectl create -f fluentd.secret.yaml
# (4) Create a fluentd daemonset that reads and depends on the secret
$ kubectl create -f fluentd.daemonset.yaml