Monitoring Kubernetes - Release History

Monitoring Kubernetes - Release History

5.2 - 2018-10-15

Requires collectorforkubernetes version 5.2 or above

New: Review/Storage dashboard based on storage metrics and PVC metrics.
New: predefined alerts to help you monitor the health of the clusters and performance of the applications.
Fixed: Performance improvements

Collector updates:

New: runtime storage metrics (usage, available, inodes)
New: image is built on top of SCRATCH image.
New: verify and diag commands for troubleshooting.
New: support /dev/null output for logs
New: override source/sourcetype and index base on regexp pattern for container logs.
Fixed: do not send empty docker_labels
New: support docker JSON tags and labels
Fixed: allowing a new license to unblock collector with the expired license.
Fixed: Prometheus parser fails to parse metrics with labels that end with a comma.
Fixed: Performance improvements
New: Prometheus parser supports basic authentication
Fixed: Workaround for a bug in HTTP Event Collector, that can return an incorrect index of failed event
New: Prometheus autodiscover support host network
Fixed: remove node info and limit metadata from logs
Fixed: documentation / default configuration update - mount `/etc/localtime to allow collector to use host tz (when not UTC)
Fixed: documentation / default configuration update - use dnsPolicy: ClusterFirstWithHostNet for pods mounted on host network

5.1 - 2018-09-17

Requires collectorforkubernetes version 5.1 or above

New: Network metrics (MB, Packets, Drops and Errors) for host and containers.
New: Network socket tables (list of port that containers and hosts are listen on, connections to external resources).
New: Network review dashboard to see the list of connection to public services and in private network.
Improvement: Replace python-based lookup with macro written with eval.
Improvement: Visual improvement for showing when the object was Last Seen (highlighting and showing minutes ago).
New: discovering Prometheus metrics in Pods with annotations.
New: attaching pod metadata to metrics collected from prometheus metrics exposed from pods.
Improvement: Changed source of proc stats to proc root filesystem, to keep minimum list of unique sources.
New: Support for Splunk multi-threads outputs (for forwarding more than 3000 events per second).
Improvement: Performance improvements for Prometheus parsing.
Improvement: Reduce amount of metrics forwarded with proc_stats by excluding system threads.
Improvement: Configuration for gzip compression.
Improvement: Calculate checksums for first bytes of files, to better identify new files with reused iNode.
Bug: Process metrics could be collected 2 times.

5.0 - 2018-09-03

Requires collectorforkubernetes version 5.0 or above

New dashboard: Events
Added events panel to the Workload and Pod dashboards.
Labels on Workload and Hosts dashboards.
Auto-discover and forward Application logs from host mounts or local volumes.
Annotations for containers to change per container configurations (index, source, join rules, replaces and more).
Escaping terminal sequences from container logs.
Redirecting logs to /dev/null for specific patterns.
Replace patterns in container and application logs (hiding sensitive or not important information).
Support for extracting fields from the container logs, including timestamps.
Include Memory and CPU limits for container lists.
Visual updates for the panels, highlighting high CPU and Memory usages
Filter cgroup stats, forward only container and host metrics.
Support for multiple Splunk HTTP Event Collector endpoints (support fail-over and load-balancing).
Handle HTTP Event Collector errors with the incorrect index. Multiple options to redirect to default index, drop or wait.
Add retry logic to license client to reduce amount of false positive warnings.
Add HTTP read timeouts (handle gateway timeouts, 504).
Fixed: fail to parse the latest line in the JSON log.
Better error handling incorrect configurations.
Deprecating Join rules in favour of annotations.
Support for HTTP Event Collector client certificates.
Support CRI-O runtime.
Fixed: limit directory walkers for depth (fixing issues when directory has a mount to itself)
Fixed: add a limit of the maximum line size that collector can read at once (defaults to 1Mb).
Fixed: acknowledgement database stores now NodeID, DevID and a parent folder identifier. That way if NodeID is going to be reused right away - we will identify this file as a new one, if it is in different location.
Change: docker_stream field has been renamed to stream for compatibility with other container runtime.
Change: prometheus metrics has default sourcetype=kubernetes_prometheus (macro supports backward compatibility)

Upgrade from version 4 to 5

4.0.24 - 2018-05-05

Requires collectorforkubernetes version 4.0 or above

New dashboard: Cluster/Audit
New dashboard: Cluster/Kubernetes API Server
New dashboard: Cluster/Kubelet
New dashboard: Cluster/etcd
New dashboard: Cluster/Scheduler
New dashboard: Cluster/Controller Manager.
Include image name, when list containers.
Added syslog component to the list of host logs.
Fixed: Include Daemon Set on Overview dashboard, list of namespaces.

Collector updates (4.0.171):

Collecting metrics from Prometheus format.
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).
Performance optimizations.
Optimize payloads for higher write throughput.
Fixed: reduce the number of calls to Kubernetes API Server.
Fixed: fail to parse the latest line in the JSON log.
Better error handling incorrect configurations.
Failed to parse memory limits (Failed to parse memory=000k for the container).
Collecting Kubernetes events from the cluster once by using collector addon.

collectorforkubernetes 4.0.172

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.
Fixed: Incorrectly parsed Limits for the Kubernetes pods. 5m and 500m both results as 0.500.

collectorforkubernetes 4.0.173

Fixed: significant memory usage with the events larger than 512Kb, caused by Splunk issue SPL-156315 (incapable to parse events larger 512Kb, regression in 7.x).

collectorforkubernetes 4.0.174.180730

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

Upgrade from version 3 to 4

3.0.23 - 2018-02-17

Requires collectorforkubernetes version 3.0 or above

Bug: Memory view on workflow dashboard had a max limit set to 100.
Bug: Events view on overview dashboard had a max limit set to 100.

3.0.22 - 2018-02-07

Requires collectorforkubernetes version 3.0 or above

Added support for containers deployed without Kubernetes.
Added CPU Quota, CPU Shares, Throttled and Memory Limit and Request Overlays on Container and Pod Dashboards.
Indexing Kubernetes events in sourcetype kubernetes_events
Performance improvement on Dashboards by combining multiple charts using one common search.
New "Review/Allocatable Resources" dashboard to track limits and requests for CPU and Memory.
New "Review/Privileged containers and enabled capabilities" dashboard to list all privileged containers and enabled security capabilities for containers.
New Overview dashboard to easy navigate within the application.
New Aggregated metrics dashboard for specific Workload.
Fixed bug on Process Dashboard, some charts did not filter by host.
"Setup: Collectors" now supports collectorforkubernetes images distributed via private registries.
"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.
Watching for Kubernetes/OpenShift events.
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 Kubernetes does not provide metadata, allow to wait for metadata.
Collect security capabilities and uid/gid.
For Kubernetes/OpenShift environments recognize containers scheduled outside of Pods and load metadata directly from docker.
Support for custom labels, specified with collector configuration.
Support OpenShift/Kubernetes annotations "collectord.io/..." to configure destination indices, sourcetypes and sources for pods, workloads and namespaces.
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.

Upgrade from version 2 to 3

2.1 - 2017-10-22

Requires collectorforkubernetes version 2.1.59.171210 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.
Fields extraction support for nginx ingress 0.9 and above.
collector* - Improved resistance for storage failures.
collector* - License checks reporting.
collector* - Better support for openshift environment (default configuration).

2.0 - 2017-10-22

Requires collectorforkubernetes version 2.0.37.171023 or above

Better labels support in Dashboards. Collector has a breaking feature, replacing format for labels from kubernetes_node_labels_LABEL1=VALUE1 to kubernetes_node_labels=[LABEL1=VALUE1,LABEL2=VALUE2].
Process level metrics.
Uptime for hosts and processes.
Fields extraction for kubernetes controller manager and scheduler.
Fields extraction and support in dashboards for main kubernetes components (setup host logs collection with collector).
New top-like dashboards allow to monitor Hosts/Pods/Containers/Processes in real-time.
Rewritten Kubernetes Objects Dashboards with support of Events and Labels.
Improved dashboards navigation.
Support for host logs.
Other bugs and improvements based on user feedback.

Links

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