John Howard

Improve performance of stats recording

5

**Is your feature request related to a problem? Please describe.** Yes. Usage of opencensus-go to record metrics has a substantial overhead. In real world application, we have seen OC accounting...

EnvoyFilterUsesReplaceOperation new flaky test

4

Root cause https://github.com/istio/istio/pull/38389 Examples https://prow.istio.io/view/gs/istio-prow/logs/unit-tests_istio_postsubmit/1523665851696287744 See https://github.com/istio/istio/wiki/Test-Flakes#reproducing-test-flakes

Analysis constantly spams "error on get"

1

``` error on get reviews/default: virtualservices.networking.istio.io "reviews" not found ``` over and over, after running `./tests/integration/pilot/analysis` tests with no cleanup enabled

kube-inject panic

3

``` $ cat ~/kube/shell/shell.yaml| ik kube-inject -f - 2022-01-19T21:02:44.896317Z warn failed to get injection config from mutatingWebhookConfigurations "istio-sidecar-injector", will fall back to get injection from the injection configmap "istio-sidecar-injector" :...

Ensure EnvoyFilter doesn't patch shared structs

7

In Istio 1.4 I came across a bug where we mutated a shared struct from EnvoyFilter merge. It doesn't exist anymore, but we should ensure there are no similar bugs...

CNI race condition alternative design

32

The CNI startup race condition (https://docs.google.com/document/d/1SQzrFxtcn3o_79OtJYbSHMPuqZNhR3EaEhbkpBVMXAw/edit#) is an issue that has plagued Istio for quite some time. We currently have 2 solutions: * init container on sidecar injected which tests...

kube client: use disk cache for CLI tools

2

When using istioctl on slow api-servers, things are super slow. The issue is *every* call does API server discovery. This process is super slow. To workaround this slowness, k8s has...

tf: Fix Istioctl XDS flakes

1

This is failing recently since we made proxy disconnect from control plane more often. This exposed that these tests fail if they happen to run when not connected. Fixes https://github.com/istio/istio/issues/37169...

Build go binaries in parallel

7

Compiling multiple binaries in a single go command is much faster than individually. For example, both incremental builds: ```bash $ time sh -c ' quote> go build -o /dev/null ./pilot/cmd/pilot-discovery...

*Title*: Add support for matching VirtualHost.Domains without `port` considered *Description*: We would like a way for `domains` to be matched ignoring port. For example, `domains: [foo.com]` would match `Host: foo.com:1234`,...