Outcold Solutions LLC

Monitoring Docker - Release History

3.0 - 2018-02-07

Requires collectorfordocker version 3.0 or above

  • Added CPU Quota, CPU Shares, Throttled and Memory Limit Overlays on Container Dashboards.
  • Performance improvement on Dashboards by combining multiple charts using one common search.
  • New "Review/Privileged containers and enabled capabilities" dashboard to list all privileged containers and enabled security capabilities for containers.
  • Fixed bug on Process Dashboard, some charts did not filter by host.
  • "Overview: Process" dashboard did not use Span token for timechart dashboards.
  • "Top: Containers" fixed incorrect memory usage (showed double size)
  • Added alerts in application for notification about outdated collector versions and expired licenses for collector.
  • Hide Wait Read/Write IO panels, when this data is not available.
  • In process Dashboard show VmRSS with RssAnon, RssFile, and RssShmem.

Collector updates:

  • Support for Splunk indexing acknowledgment.
  • HTTP Proxy support for License server and Splunk output.
  • Allow to configure destination indices for different types of data in collector configuration (stats, logs, host logs, proc stats and events).
  • Handling responses from HTTP Event Collector to skip invalid events (will be logged).
  • If container is running, but Docker does not provide metadata, allow to wait for metadata.
  • Collect security capabilities and uid/gid.
  • Support for custom labels, specified with collector configuration.
  • Support for partial logs without join rules.
  • Bug. Use local timezone by default for local syslog files.
  • Bug. Fix small memory leak on deleted containers.
  • Bug. When collector is failing to send data to Splunk, impossible to stop collector with terminate.

collectorfordocker 3.0.93

  • Fixed: Support for Docker running on CentOS (metadata is not attached to metrics).

collectorfordocker 3.0.91

  • Fixed: Messages "WARN ... proc.go:441: Unparsable line from /rootfs/proc/X/status" caused by new Linux kernel that reports empty line in proc file system.
  • Add HTTP read timeouts (handle gateway timeouts, 504).
  • Correctly parse HTTP Event Responses when one of few events fail to be indexed (as an example, wrong index).


  • Show the index name in the output, when Splunk reports incorrect index.

Upgrade from version 2 to 3

2.1 - 2017-10-22

Requires collectorfordocker version or above

  • Implemented collectors dashboard to track number of collectors, their versions and used licenses.
  • Fallback to the process IO statistics when blkio is not available.
  • Fix IO statistic graphs, showed average, when sum should be used.
  • collector - Improved resistance for storage failures.
  • collector - License checks reporting.

2.0 - 2017-10-22

Requires collectorfordocker version or above

  • Better labels support in Dashboards. Collector has a breaking feature, replacing format for labels from docker_labels_LABEL1=VALUE1 to docker_labels=[LABEL1=VALUE1,LABEL2=VALUE2].
  • Process level metrics.
  • Uptime for hosts and processes.
  • Fields extraction and support in dashboards for docker daemon (setup host logs collection with collector).
  • New top dashboards allow to monitor Hosts/Containers/Processes in real-time.
  • Improved dashboards navigation.
  • Support for host logs.
  • Other bugs and improvements based on user feedback.

About Outcold Solutions

Outcold Solutions provides solutions for monitoring Kubernetes, OpenShift and Docker clusters in Splunk Enterprise and Splunk Cloud. We offer certified Splunk applications, which gives you insights across all containers environments. We are helping businesses reduce complexity related to logging and monitoring by providing easy-to-use and deploy solutions for Linux and Windows containers. We deliver applications, which helps developers monitor their applications and operators to keep their clusters healthy. With the power of Splunk Enterprise and Splunk Cloud, we offer one solution to help you keep all the metrics and logs in one place, allowing you to quickly address complex questions on container performance.