Merge pull request #6463 from logicalhan/annual-report
2021 annual report for SIG instrumentation
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1. What work did the SIG do this year that should be highlighted?
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-
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-
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-
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- Formed WG Structured Logging. Successfully migrated multiple components to structured logs and graduated feature to beta.
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- Added tracing support to the Kubernetes API server and began work on Kubelet tracing.
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- Graduated the metrics stability framework.
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2. What initiatives are you working on that aren't being tracked in KEPs?
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-
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-
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-
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- Bi-weekly triage meeting
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- Subprojects (see below)
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3. KEP work in 2021 (1.x, 1.y, 1.z):
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@ -23,63 +22,94 @@ In future, this will be generated from kubernetes/enhancements kep.yaml files
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-->
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- Stable
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- [$kep-number - $title](https://git.k8s.io/community/$link/README.md) - $milestone.stable
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- [$kep-number - $title](https://git.k8s.io/community/$link/README.md) - $milestone.stable
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- [1209 - Metrics Stability](https://github.com/kubernetes/enhancements/tree/master/keps/sig-instrumentation/1209-metrics-stability) - 1.21
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- [1933 - Prevent logging secrets via static analysis](https://github.com/kubernetes/enhancements/tree/master/keps/sig-instrumentation/1753-logs-sanitization) - 1.23
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- Beta
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- [$kep-number - $title](https://git.k8s.io/community/$link/README.md) - $milestone.beta
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- [$kep-number - $title](https://git.k8s.io/community/$link/README.md) - $milestone.beta
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- [1602 - Structured Logging](https://github.com/kubernetes/enhancements/tree/master/keps/sig-instrumentation/1602-structured-logging) - 1.23
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- [1748 - Pod resource requests/limits metrics](https://github.com/kubernetes/enhancements/tree/master/keps/sig-instrumentation/1748-pod-resource-metrics) - 1.22
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- Alpha
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- [$kep-number - $title](https://git.k8s.io/community/$link/README.md) - $milestone.alpha
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- [$kep-number - $title](https://git.k8s.io/community/$link/README.md) - $milestone.alpha
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- [2305 - Metrics Cardinality Enforcement](https://github.com/kubernetes/enhancements/tree/master/keps/sig-instrumentation/2305-metrics-cardinality-enforcement) - 1.21
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- [647 - API Server Tracing](https://github.com/kubernetes/enhancements/tree/master/keps/sig-instrumentation/647-apiserver-tracing) - 1.22
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- [2845 - Deprecate klog-specific flags in k8s components](https://github.com/kubernetes/enhancements/tree/master/keps/sig-instrumentation/2845-deprecate-klog-specific-flags-in-k8s-components) - 1.23
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- Pre-alpha
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- [$kep-number - $title](https://git.k8s.io/community/$link/README.md)
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- [2831 - Kubelet OpenTelemetry Tracing](https://github.com/kubernetes/enhancements/tree/master/keps/sig-instrumentation/2831-kubelet-tracing) - alpha in 1.24
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## Project health
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1. What areas and/or subprojects does your group need the most help with?
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Any areas with 2 or fewer OWNERs? (link to more details)
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-
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-
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-
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- [kubernetes-sigs/prometheus-adapter](https://github.com/kubernetes-sigs/prometheus-adapter/blob/master/OWNERS_ALIASES) has 1 active approver
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2. What metrics/community health stats does your group care about and/or measure?
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-
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-
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- Devstats
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- [Review Load](https://k8s.devstats.cncf.io/d/80/pr-workload-per-sig-and-repository-chart?orgId=1&var-sigs=%22instrumentation%22&var-repo_name=kubernetes%2Fkubernetes&var-repo=kuberneteskubernetes&from=now-1y&to=now) has been relatively level over the year
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- [Time to Approve and Merge](https://k8s.devstats.cncf.io/d/44/pr-time-to-approve-and-merge?orgId=1&var-period=d7&var-repogroup_name=SIG%20Instrumentation&var-repo_name=kubernetes%2Fkubernetes&var-apichange=All&var-size_name=All&var-kind_name=All) has been relatively low over the last year.
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- Meeting attendance
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- Meeting attendance is ~10 each week
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- Triage attendance is ~5 each week
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- Enhancement velocity
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- 7 Active enhancements over the year
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3. Does your [CONTRIBUTING.md] help **new** contributors engage with your group specifically by pointing
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to activities or programs that provide useful context or allow easy participation?
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-
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- We don't have our own CONTRIBUTING.md as the overall one is suitable for our SIG. However, we have [filed an issue](https://github.com/kubernetes/community/issues/6462) to create one to better document how to get involved with our subprojects.
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4. If your group has special training, requirements for reviewers/approvers, or processes beyond the general [contributor guide],
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does your [CONTRIBUTING.md] document those to help **existing** contributors grow throughout the [contributor ladder]?
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-
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- N/A, we don't have special training or requirements
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5. Does the group have contributors from multiple companies/affiliations?
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-
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- Yes: Google, Red Hat, Sony, VMware, Intel, independent contributors, and more
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6. Are there ways end users/companies can contribute that they currently are not?
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If one of those ways is more full time support, what would they work on and why?
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-
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-
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SIG leads performed a [staffing and gap analysis](https://docs.google.com/document/d/1qeoP6i7GBTVJuJE1AGY5iU9dqmAOxrjqkfNQ2-rBeyI/edit#heading=h.849b7ydpl7ip) for the SIG's projects. We definitely can use more help, and need more part-time/full-time contributors.
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### Summary
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- **KTLO:** 4 leads at 5%, 2 maintainers at 10% for core, 9-10 maintainers at 5% for 5 subprojects (can have overlap between roles, but need a minimum of 3-4 part-time contributors at 25%)
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- **Feature work:** needs significant ongoing additional investment, minimum of 2-3 FT devs or features will continue to slip
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### Details
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- **KTLO:** Requires two experienced part-time maintainers at 10% (e.g. 2x4h = 8h/wk) in addition to the SIG leadership (chairs/TLs @ minimum of 2h/wk)
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- Chairs/TLs currently perform the bulk of this work but even amongst the four of them, **do not** have 8h total weekly allocated
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- **Feature work:** requires significantly more investment from development and review time.
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- E.g. Structured logging initiative requires a minimum of 2 FT staff for the duration of feature development from beta -> GA
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- Additional metric stability classes and graduation: 1PT maintainer at 25% for the duration of feature development
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- SIG currently owns a number of KEPs stuck in alpha/beta due to lack of dev resources:
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- https://github.com/kubernetes/enhancements/issues/383
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- https://github.com/kubernetes/enhancements/issues/1753
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- https://github.com/kubernetes/enhancements/issues/2305
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### Subprojects
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- Subprojects are currently mature/stable and mainly have KTLO needs
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- kube-state-metrics: 2-3 experienced maintainers at 5%, currently staffed
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- Metrics-server: 2 experienced maintainers at 5%, currently staffed
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- Custom-metrics-apiserver: 1 experienced maintainer at 5%, currently staffed
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- Klog: 2 experienced maintainers at 5%, has **no current staffing**
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- Prometheus-adapter: 2 experienced maintainers at 5%, has **no current staffing**
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## Membership
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- Primary slack channel member count:
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- Primary mailing list member count:
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- Primary meeting attendee count (estimated, if needed):
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- Primary meeting participant count (estimated, if needed):
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- Unique reviewers for SIG-owned packages: <!-- in future, this will be generated from OWNERS files referenced from subprojects, expanded with OWNERS_ALIASES files -->
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- Unique approvers for SIG-owned packages: <!-- in future, this will be generated from OWNERS files referenced from subprojects, expanded with OWNERS_ALIASES files -->
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- Primary slack channel member count: 1,740
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- Primary mailing list member count: 324
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- Primary meeting attendee count (estimated, if needed): 8-12
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- Primary meeting participant count (estimated, if needed): 4-6
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- Unique reviewers for SIG-owned packages: 24 <!-- in future, this will be generated from OWNERS files referenced from subprojects, expanded with OWNERS_ALIASES files -->
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- Unique approvers for SIG-owned packages: 22 <!-- in future, this will be generated from OWNERS files referenced from subprojects, expanded with OWNERS_ALIASES files -->
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Include any other ways you measure group membership
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- We track active members in the SIG primarily based on devstats and meeting participation, and maintain an up-to-date roster of members in [kubernetes/org](https://github.com/kubernetes/org/blob/main/config/kubernetes/sig-instrumentation/teams.yaml). These teams also serve as aliases for GitHub pings.
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## Subprojects
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<!--
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@ -87,17 +117,23 @@ In future, this will be generated from delta of sigs.yaml from $YYYY-01-01 to $Y
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Manually visible via `git diff HEAD@{$YYYY-01-01} HEAD@{$YYYY-12-31} -- $sig-id/README.md`
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-->
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New in $YYYY:
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- [$subproject-name](https://git.k8s.io/community/$sig-id#$subproject-name)
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-
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New in 2021:
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- [instrumentation](https://github.com/kubernetes-sigs/instrumentation)
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- [instrumentation-addons](https://github.com/kubernetes-sigs/instrumentation-addons)
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Retired in $YYYY:
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- [$subproject-name](https://git.k8s.io/community/$sig-id#$subproject-name)
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-
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Retired in 2021:
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- [mutating-trace-admission-controller](https://github.com/kubernetes-retired/mutating-trace-admission-controller)
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Continuing:
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- [$subproject-name](https://git.k8s.io/community/$sig-id#$subproject-name)
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-
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- [kube-state-metrics](https://github.com/kubernetes/kube-state-metrics)
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- [metrics](https://github.com/kubernetes/kubernetes/tree/master/staging/src/k8s.io/metrics)
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- [custom-metrics-apiserver](https://github.com/kubernetes-sigs/custom-metrics-apiserver)
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- [metrics-server](https://github.com/kubernetes-sigs/metrics-server)
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- [prometheus-adapter](https://github.com/kubernetes-sigs/prometheus-adapter)
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- [klog](https://github.com/kubernetes/klog)
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- [structured-logging](https://github.com/kubernetes/kubernetes/blob/master/staging/src/k8s.io/component-base/logs)
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- [metric-stability-framework](https://github.com/kubernetes/kubernetes/tree/master/staging/src/k8s.io/component-base/metrics)
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- [instrumentation-tools](https://github.com/kubernetes-sigs/instrumentation-tools)
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## Working groups
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Manually visible via `git diff HEAD@{$YYYY-01-01} HEAD@{$YYYY-12-31} -- $sig-id/README.md`
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-->
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New in $YYYY:
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- [$wg-name](https://git.k8s.io/community/$wg-id/) ([$YYYY report](https://git.k8s.io/community/$wg-id/annual-report-$YYYY.md))
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-
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Retired in $YYYY:
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- [$wg-name](https://git.k8s.io/community/$wg-id/) ([$YYYY report](https://git.k8s.io/community/$wg-id/annual-report-$YYYY.md))
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-
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Continuing:
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- [$wg-name](https://git.k8s.io/community/$wg-id/) ([$YYYY report](https://git.k8s.io/community/$wg-id/annual-report-$YYYY.md))
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-
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New in 2021:
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- [WG Structured Logging](https://github.com/kubernetes/community/tree/master/wg-structured-logging) ([2021 report](https://github.com/kubernetes/community/blob/master/wg-structured-logging/annual-report-2021.md))
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## Operational
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Operational tasks in [sig-governance.md]:
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- [ ] [README.md] reviewed for accuracy and updated if needed
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- [ ] [CONTRIBUTING.md] reviewed for accuracy and updated if needed
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- [x] [CONTRIBUTING.md] reviewed for accuracy and updated if needed
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(or created if missing and your contributor steps and experience are different or more
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in-depth than the documentation listed in the general [contributor guide] and [devel] folder.)
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- [ ] Subprojects list and linked OWNERS files in [sigs.yaml] reviewed for accuracy and updated if needed
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- [ ] SIG leaders (chairs, tech leads, and subproject owners) in [sigs.yaml] are accurate and active, and updated if needed
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- [ ] Meeting notes and recordings for 2021 are linked from [README.md] and updated/uploaded if needed
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- [ ] Did you have community-wide updates in 2021 (e.g. community meetings, kubecon, or kubernetes-dev@ emails)? Links to email, slides, or recordings:
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-
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-
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- [x] Subprojects list and linked OWNERS files in [sigs.yaml] reviewed for accuracy and updated if needed
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- [x] SIG leaders (chairs, tech leads, and subproject owners) in [sigs.yaml] are accurate and active, and updated if needed
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- [x] Meeting notes and recordings for 2021 are linked from [README.md] and updated/uploaded if needed
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- [x] Did you have community-wide updates in 2021 (e.g. community meetings, kubecon, or kubernetes-dev@ emails)? Links to email, slides, or recordings:
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- [KubeCon EU 2021 SIG Update](https://sched.co/iE8c)
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- [KubeCon NA 2021 SIG Update](https://sched.co/lV72)
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- [Structured logging targeting 1.21 beta (kubernetes-dev@)](https://groups.google.com/g/kubernetes-dev/c/vjSqUtPO0hs/m/wF91qunnBQAJ)
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- [WG Creation Request: WG Structured Logging (kubernetes-dev@)](https://groups.google.com/g/kubernetes-dev/c/y4WIw-ntUR8/m/NaQHu1cnAwAJ)
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- [Deprecation: Dynamic log sanitization removal in 1.24 (kubernetes-dev@)](https://groups.google.com/g/kubernetes-dev/c/xhQuwdd2Smw/m/L_EyHKbDAAAJ)
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[CONTRIBUTING.md]: https://git.k8s.io/community/sig-instrumentation/CONTRIBUTING.md
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[contributor ladder]: https://git.k8s.io/community/community-membership.md
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[README.md]: https://git.k8s.io/community/sig-instrumentation/README.md
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[sigs.yaml]: https://git.k8s.io/community/sigs.yaml
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[contributor guide]: https://git.k8s.io/community/contributors/guide/README.md
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[devel]: https://git.k8s.io/community/contributors/devel/README.md
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[devel]: https://git.k8s.io/community/contributors/devel/README.md
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