[WIP] 2022 annual report for SIG instrumentation

Author: Han Kang

sig-instrumentation/annual-report-2022.md

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+# 2021 Annual Report: SIG Instrumentation
+
+## Current initiatives
+
+1. What work did the SIG do this year that should be highlighted?
+
+   - Formed WG Structured Logging. Successfully migrated multiple components to structured logs and graduated feature to beta.
+   - Added tracing support to the Kubernetes API server and began work on Kubelet tracing.
+   - Graduated the metrics stability framework.
+
+2. What initiatives are you working on that aren't being tracked in KEPs?
+
+   - Bi-weekly triage meeting
+   - Subprojects (see below)
+
+3. KEP work in 2021 (1.x, 1.y, 1.z):
+
+<!--
+In future, this will be generated from kubernetes/enhancements kep.yaml files
+1. with SIG as owning-sig or in participating-sigs
+2. listing 1.x, 1.y, or 1.z in milestones or in latest-milestone
+-->
+
+   - Stable
+     - [1209 - Metrics Stability](https://git.k8s.io/enhancements/...) - 1.21
+     - [1933 - Prevent logging secrets via static analysis](https://git.k8s.io/community/$link/README.md) - 1.23
+   - Beta
+     - [1602 - Structured Logging](https://git.k8s.io/community/$link/README.md) - 1.23
+     - [1748 - Pod resource requests/limits metrics](https://git.k8s.io/community/$link/README.md) - 1.22
+   - Alpha
+     - [2305 - Metrics Cardinality Enforcement](https://git.k8s.io/community/$link/README.md) - 1.21
+     - [647 - API Server Tracing](https://git.k8s.io/community/$link/README.md) - 1.22
+     - [2845 - Deprecate klog-specific flags in k8s components](https://git.k8s.io/community/$link/README.md) - 1.23
+   - Pre-alpha
+     - [2831 - Kubelet OpenTelemetry Tracing](https://git.k8s.io/community/$link/README.md) - alpha in 1.24
+
+## Project health
+
+1. What areas and/or subprojects does your group need the most help with?
+   Any areas with 2 or fewer OWNERs? (link to more details)
+
+   - [kubernetes-sigs/custom-metrics-apiserver](https://github.com/kubernetes-sigs/custom-metrics-apiserver/blob/master/OWNERS) has 1 active approver
+   - [kubernetes-sigs/metrics-server](https://github.com/kubernetes-sigs/metrics-server/blob/master/OWNERS) has 1 active approver
+   - [kubernetes-sigs/prometheus-adapter](https://github.com/kubernetes-sigs/prometheus-adapter/blob/master/OWNERS_ALIASES) has 1 active approver
+
+2. What metrics/community health stats does your group care about and/or measure?
+
+   - Devstats
+     - [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
+     - [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.
+   - Meeting attendance
+       - Meeting attendance is ~10 each week
+       - Triage attendance is ~5 each week
+   - Enhancement velocity
+       - 7 Active enhancements over the year
+
+3. Does your [CONTRIBUTING.md] help **new** contributors engage with your group specifically by pointing
+   to activities or programs that provide useful context or allow easy participation?
+
+   -
+
+4. If your group has special training, requirements for reviewers/approvers, or processes beyond the general [contributor guide],
+   does your [CONTRIBUTING.md] document those to help **existing** contributors grow throughout the [contributor ladder]?
+
+   - N/A, we don't have special training or requirements
+
+5. Does the group have contributors from multiple companies/affiliations?
+
+   - Yes: Red Hat, Google, Intel, ...
+
+6. Are there ways end users/companies can contribute that they currently are not?
+   If one of those ways is more full time support, what would they work on and why?
+
+   - Yes
+   -
+
+## Membership
+
+- Primary slack channel member count: 1,740
+- Primary mailing list member count: 324
+- Primary meeting attendee count (estimated, if needed): 8-12
+- Primary meeting participant count (estimated, if needed): 4-6
+- Unique reviewers for SIG-owned packages: 24 <!-- in future, this will be generated from OWNERS files referenced from subprojects, expanded with OWNERS_ALIASES files -->
+- Unique approvers for SIG-owned packages: 22 <!-- in future, this will be generated from OWNERS files referenced from subprojects, expanded with OWNERS_ALIASES files -->
+
+Include any other ways you measure group membership
+
+- 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.
+
+## Subprojects
+
+<!--
+In future, this will be generated from delta of sigs.yaml from $YYYY-01-01 to $YYYY-12-31
+Manually visible via `git diff HEAD@{$YYYY-01-01} HEAD@{$YYYY-12-31} -- $sig-id/README.md`
+-->
+
+New in 2021:
+- [instrumentation](https://github.com/kubernetes-sigs/instrumentation)
+- [instrumentation-addons](https://github.com/kubernetes-sigs/instrumentation-addons)
+
+Retired in 2021:
+- [heapster](https://github.com/kubernetes-retired/heapster)
+- [mutating-trace-admission-controller](https://github.com/kubernetes-retired/mutating-trace-admission-controller)
+
+Continuing:
+- [kube-state-metrics](https://github.com/kubernetes/kube-state-metrics)
+- [metrics](https://github.com/kubernetes/kubernetes/tree/master/staging/src/k8s.io/metrics)
+- [custom-metrics-apiserver](https://github.com/kubernetes-sigs/custom-metrics-apiserver)
+- [metrics-server](https://github.com/kubernetes-sigs/metrics-server)
+- [prometheus-adapter](https://github.com/kubernetes-sigs/prometheus-adapter)
+- [klog](https://github.com/kubernetes/klog)
+- [structured-logging](https://github.com/kubernetes/kubernetes/blob/master/staging/src/k8s.io/component-base/logs)
+- [metric-stability-framework](https://github.com/kubernetes/kubernetes/tree/master/staging/src/k8s.io/component-base/metrics)
+- [instrumentation-tools](https://github.com/kubernetes-sigs/instrumentation-tools)
+
+## Working groups
+
+<!--
+In future, this will be generated from delta of sigs.yaml from $YYYY-01-01 to $YYYY-12-31
+Manually visible via `git diff HEAD@{$YYYY-01-01} HEAD@{$YYYY-12-31} -- $sig-id/README.md`
+-->
+
+New in 2021:
+- [WG Structured Logging](https://git.k8s.io/community/$wg-id/) ([$YYYY report](https://git.k8s.io/community/$wg-id/annual-report-$YYYY.md))
+
+## Operational
+
+Operational tasks in [sig-governance.md]:
+
+- [ ] [README.md] reviewed for accuracy and updated if needed
+- [ ] [CONTRIBUTING.md] reviewed for accuracy and updated if needed
+      (or created if missing and your contributor steps and experience are different or more
+      in-depth than the documentation listed in the general [contributor guide] and [devel] folder.)
+- [x] Subprojects list and linked OWNERS files in [sigs.yaml] reviewed for accuracy and updated if needed
+- [x] SIG leaders (chairs, tech leads, and subproject owners) in [sigs.yaml] are accurate and active, and updated if needed
+- [ ] Meeting notes and recordings for 2021 are linked from [README.md] and updated/uploaded if needed
+- [x] Did you have community-wide updates in 2021 (e.g. community meetings, kubecon, or kubernetes-dev@ emails)? Links to email, slides, or recordings:
+      - [KubeCon EU 2021 SIG Update](https://sched.co/iE8c)
+      - [KubeCon NA 2021 SIG Update](https://sched.co/lV72)
+      - [Structured logging targeting 1.21 beta (kubernetes-dev@)](https://groups.google.com/g/kubernetes-dev/c/vjSqUtPO0hs/m/wF91qunnBQAJ)
+      - [WG Creation Request: WG Structured Logging (kubernetes-dev@)](https://groups.google.com/g/kubernetes-dev/c/y4WIw-ntUR8/m/NaQHu1cnAwAJ)
+      - [Deprecation: Dynamic log sanitization removal in 1.24 (kubernetes-dev@)](https://groups.google.com/g/kubernetes-dev/c/xhQuwdd2Smw/m/L_EyHKbDAAAJ)
+
+[CONTRIBUTING.md]: https://git.k8s.io/community/sig-instrumentation/CONTRIBUTING.md
+[contributor ladder]: https://git.k8s.io/community/community-membership.md
+[sig-governance.md]: https://git.k8s.io/community/committee-steering/governance/sig-governance.md
+[README.md]: https://git.k8s.io/community/sig-instrumentation/README.md
+[sigs.yaml]: https://git.k8s.io/community/sigs.yaml
+[contributor guide]: https://git.k8s.io/community/contributors/guide/README.md
+[devel]: https://git.k8s.io/community/contributors/devel/README.md