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@@ -1,7 +1,7 @@
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# This configuration file for Fluentd / td-agent is used
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# to watch changes to Docker log files that live in the
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# directory /var/lib/docker/containers/ and are symbolically
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# linked to from the /varlog directory using names that capture the
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# linked to from the /var/log directory using names that capture the
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# pod name and container name. These logs are then submitted to
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# Google Cloud Logging which assumes the installation of the cloud-logging plug-in.
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#
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@@ -29,28 +29,25 @@
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# synthetic-logger-0.25lps-pod_default-synth-lgr-997599971ee6366d4a5920d25b79286ad45ff37a74494f262e3bc98d909d0a7b.log
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# ->
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# /var/lib/docker/containers/997599971ee6366d4a5920d25b79286ad45ff37a74494f262e3bc98d909d0a7b/997599971ee6366d4a5920d25b79286ad45ff37a74494f262e3bc98d909d0a7b-json.log
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# The /var/log directory on the host is mapped to the /varlog directory in the container
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# The /var/log directory on the host is mapped to the /var/log directory in the container
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# running this instance of Fluentd and we end up collecting the file:
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# /varlog/containers/synthetic-logger-0.25lps-pod_default-synth-lgr-997599971ee6366d4a5920d25b79286ad45ff37a74494f262e3bc98d909d0a7b.log
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# /var/log/containers/synthetic-logger-0.25lps-pod_default-synth-lgr-997599971ee6366d4a5920d25b79286ad45ff37a74494f262e3bc98d909d0a7b.log
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# This results in the tag:
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# varlog.containers.synthetic-logger-0.25lps-pod_default-synth-lgr-997599971ee6366d4a5920d25b79286ad45ff37a74494f262e3bc98d909d0a7b.log
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# The record reformer is used is discard the varlog.containers prefix and
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# var.log.containers.synthetic-logger-0.25lps-pod_default-synth-lgr-997599971ee6366d4a5920d25b79286ad45ff37a74494f262e3bc98d909d0a7b.log
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# The record reformer is used is discard the var.log.containers prefix and
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# the Docker container ID suffix and "kubernetes." is pre-pended giving the
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# final tag which is ingested into Elasticsearch:
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# kubernetes.synthetic-logger-0.25lps-pod_default-synth-lgr
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# This makes it easier for users to search for logs by pod name or by
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# the name of the Kubernetes container regardless of how many times the
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# Kubernetes pod has been restarted (resulting in a several Docker container IDs).
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# TODO: Propagate the labels associated with a container along with its logs
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# so users can query logs using labels as well as or instead of the pod name
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# and container name.
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<source>
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type tail
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format json
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time_key time
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path /varlog/containers/*.log
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pos_file /varlog/gcp-containers.log.pos
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path /var/log/containers/*.log
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pos_file /var/log/gcp-containers.log.pos
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time_format %Y-%m-%dT%H:%M:%S
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tag reform.*
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read_from_head true
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@@ -59,83 +56,101 @@
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<match reform.**>
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type record_reformer
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enable_ruby true
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tag kubernetes.${tag_suffix[3].split('-')[0..-2].join('-')}
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tag kubernetes.${tag_suffix[4].split('-')[0..-2].join('-')}
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</match>
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<source>
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type tail
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format none
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path /varlog/salt/minion
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pos_file /varlog/gcp-salt.pos
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path /var/log/salt/minion
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pos_file /var/log/gcp-salt.pos
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tag salt
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</source>
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<source>
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type tail
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format none
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path /varlog/startupscript.log
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pos_file /varlog/gcp-startupscript.log.pos
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path /var/log/startupscript.log
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pos_file /var/log/gcp-startupscript.log.pos
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tag startupscript
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</source>
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<source>
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type tail
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format none
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path /varlog/docker.log
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pos_file /varlog/gcp-docker.log.pos
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path /var/log/docker.log
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pos_file /var/log/gcp-docker.log.pos
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tag docker
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</source>
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<source>
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type tail
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format none
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path /varlog/etcd.log
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pos_file /varlog/gcp-etcd.log.pos
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path /var/log/etcd.log
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pos_file /var/log/gcp-etcd.log.pos
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tag etcd
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</source>
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<source>
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type tail
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format none
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path /varlog/kubelet.log
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pos_file /varlog/gcp-kubelet.log.pos
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path /var/log/kubelet.log
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pos_file /var/log/gcp-kubelet.log.pos
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tag kubelet
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</source>
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<source>
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type tail
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format none
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path /varlog/kube-apiserver.log
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pos_file /varlog/gcp-kube-apiserver.log.pos
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path /var/log/kube-apiserver.log
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pos_file /var/log/gcp-kube-apiserver.log.pos
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tag kube-apiserver
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</source>
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<source>
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type tail
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format none
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path /varlog/kube-controller-manager.log
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pos_file /varlog/gcp-kube-controller-manager.log.pos
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path /var/log/kube-controller-manager.log
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pos_file /var/log/gcp-kube-controller-manager.log.pos
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tag kube-controller-manager
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</source>
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<source>
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type tail
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format none
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path /varlog/kube-scheduler.log
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pos_file /varlog/gcp-kube-scheduler.log.pos
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path /var/log/kube-scheduler.log
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pos_file /var/log/gcp-kube-scheduler.log.pos
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tag kube-scheduler
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</source>
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<match **>
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# We use 2 output stanzas - one to handle the container logs and one to handle
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# the node daemon logs, the latter of which explicitly sends its logs to the
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# compute.googleapis.com service rather than container.googleapis.com to keep
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# them separate since most users don't care about the node logs.
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<match kubernetes.**>
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type google_cloud
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# Set the chunk limit conservatively to avoid exceeding the GCL limit
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# of 2MB per write request.
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buffer_chunk_limit 512K
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# Cap buffer memory usage to 512KB/chunk * 128 chunks = 65 MB
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buffer_queue_limit 128
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# Cap the combined memory usage of this buffer and the one below to
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# 512KB/chunk * (96 + 32) chunks = 65 MB
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buffer_queue_limit 96
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# Never wait more than 5 seconds before flushing logs in the non-error case.
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flush_interval 5s
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# Never wait longer than 5 minutes between retries.
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max_retry_wait 300
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# Disable the limit on the number of retries (retry forever).
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disable_retry_limit
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</match>
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# Keep a smaller buffer here since these logs are less important than the user's
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# container logs.
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<match **>
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type google_cloud
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detect_subservice false
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buffer_chunk_limit 512K
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buffer_queue_limit 32
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flush_interval 5s
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max_retry_wait 300
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disable_retry_limit
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</match>
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k8s-merge-robot