As described in #2217, the controller returns TLS identities for results even
when the destination pod may not be able to participate in identity
requester: specifically, the other pod may not have the same controller
namespace or it may not be injected with identity.
This change introduces a new annotation, linkerd.io/identity-mode that is set
when injecting pods (via both CLI and webhook). This annotation is always
added.
The destination service now only returns TLS identities when this annotation
is set to optional on a pod and the destination pod uses the same controller.
These semantics are expected to change before the 2.3 release.
Fixes#2217
Previously, the update-handling logic was spread across several very
small functions that were only called within this file. I've
consolidated this logic into endpointListener.Update so that all of the
debug logging can be instrumented in one place without having to iterate
over lists multiple times.
Also, I've fixed the formatting of IP addresses in some places.
Logs now look as follows:
msg="Establishing watch on endpoint linkerd-prometheus.linkerd:9090" component=endpoints-watcher
msg="Subscribing linkerd-prometheus.linkerd:9090 exists=true" component=service-port id=linkerd-prometheus.linkerd target-port=admin-http
msg="Update: add=1; remove=0" component=endpoint-listener namespace=linkerd service=linkerd-prometheus
msg="Update: add: addr=10.1.1.160; pod=linkerd-prometheus-7bbc899687-nd9zt; addr:<ip:<ipv4:167838112 > port:9090 > weight:1 metric_labels:<key:\"control_plane_ns\" value:\"linkerd\" > metric_labels:<key:\"deployment\" value:\"linkerd-prometheus\" > metric_labels:<key:\"pod\" value:\"linkerd-prometheus-7bbc899687-nd9zt\" > metric_labels:<key:\"pod_template_hash\" value:\"7bbc899687\" > protocol_hint:<h2:<> > " component=endpoint-listener namespace=linkerd service=linkerd-prometheus
The control-plane components relied on a `--single-namespace` param,
passed from `linkerd install` into each individual component, to
determine which namespaces they were authorized to access, and whether
to support ServiceProfiles. This command-line flag was redundant given
the authorization rules encoded in the parent `linkerd install` output,
via [Cluster]Role[Binding]s.
Modify the control-plane components to query Kubernetes at startup to
determine which namespaces they are authorized to access, and whether
ServiceProfile support is available. This allows removal of the
`--single-namespace` flag on the components.
Also update `bin/test-cleanup` to cleanup the ServiceProfile CRD.
TODO:
- Remove `--single-namespace` flag on `linkerd install`, part of #2164
Signed-off-by: Andrew Seigner <siggy@buoyant.io>
goconst finds repeated strings that could be replaced by a constant:
https://github.com/jgautheron/goconst
Part of #217
Signed-off-by: Andrew Seigner <siggy@buoyant.io>
Adds a flag, tcp_stats to the StatSummary request, which queries prometheus for TCP stats.
This branch returns TCP stats at /api/tps-reports when this flag is true.
TCP stats are now displayed on the Resource Detail pages.
The current queried TCP stats are:
tcp_open_connections
tcp_read_bytes_total
tcp_write_bytes_total
gosimple is a Go linter that specializes in simplifying code
Also fix one spelling error in `cred_test.go`
Part of #217
Signed-off-by: Andrew Seigner <siggy@buoyant.io>
Also, some protobuf updates:
* Rename `api_port` to match recent changes in CLI code.
* Remove the `cni` message because it won't be used.
* Remove `registry` field from proto types. This helps to avoid having to workaround edge cases like fully-qualified image name in different format, and overriding user-specified Linkerd version etc.
Signed-off-by: Ivan Sim <ivan@buoyant.io>
In preparation for creating an Identity service that can chain off of an
existing CA, it's necessary to both (1) be able to create an
intermediate CA that can be used by the identity service and (2) be able
to load a CA from existing key material.
This changes the public API of the `tls` package to deal in actual key
types (rather than opaque blobs) and provides a set of helpers that can
be used to convert these credentials between common formats.
Define the global and proxy configs protobuf types that will be used by CLI install, inject and the proxy-injector.
Signed-off-by: Ivan Sim <ivan@buoyant.io>
The control-plane's clients, specifically the Kubernetes clients, did
not provide telemetry information.
Introduce a `prometheus.ClientWithTelemetry` wrapper to instrument
arbitrary clients. Apply this wrapper to Kubernetes clients.
Fixes#2183
Signed-off-by: Andrew Seigner <siggy@buoyant.io>
Up until now, the proxy-api controller service has been the sole service
that the proxy communicates with, implementing the majoriry of the API
defined in the `linkerd2-proxy-api` repo. But this is about to change:
linkerd/linkerd2-proxy-api#25 introduces a new Identity service; and
this service must be served outside of the existing proxy-api service
in the linkerd-controller deployment (so that it may run under a
distinct service account).
With this change, the "proxy-api" name becomes less descriptive. It's no
longer "the service that serves the API for the proxy," it's "the
service that serves the Destination API to the proxy." Therefore, it
seems best to bite the bullet and rename this to be the "destination"
service (i.e. because it only serves the
`io.linkerd.proxy.destination.Destination` service).
Co-authored-by: Kevin Lingerfelt <kl@buoyant.io>
Signed-off-by: Kevin Lingerfelt <kl@buoyant.io>
# Problem
When a route does not specify a timeout, the proxy-api defaults to the default
timeout and logs an error:
```
time="2019-02-13T16:29:12Z" level=error msg="failed to parse duration for route POST /io.linkerd.proxy.destination.Destination/GetProfile: time: invalid duration"
```
# Solution
We now check if a route timeout is blank. If it is not set, it is set to
`DefaultRouteTimeout`. If it is set, we try to parse it into a `Duration`.
A request was made to improve logging to include the service profile and
namespace as well.
# Validation
With valid service profiles installed, edit the `.yaml` to include an invalid
`timeout`:
```
...
name: GET /
timeout: foo
```
We should now see the following errors:
```
proxy-api time="2019-02-13T22:27:32Z" level=error msg="failed to parse duration for route 'GET /' in service profile 'webapp.default.svc.cluster.local' in namespace 'default': time: invalid duration foo"
```
This error does not show up when `timeout` is blank.
Fixes#2276
Signed-off-by: Kevin Leimkuhler <kevinl@buoyant.io>
The way these tests compare the hard-coded base64-encoded JSON
patches with those generated by the proxy injector, is extremely
brittle. Changing any of the proxy configuration causes these tests
to break, even though the proxy injector itself isn't affected.
Also, the AdmissionRequest and AdmissionResponse types are "boundary
objects" that are largely irrelevant to our code.
Fixes#2201
Signed-off-by: Ivan Sim <ivan@buoyant.io>
`golangci-lint` performs numerous checks on Go code, including golint,
ineffassign, govet, and gofmt.
This change modifies `bin/lint` to use `golangci-lint`, and replaces
usage of golint and govet.
Also perform a one-time gofmt cleanup:
- `gofmt -s -w controller/`
- `gofmt -s -w pkg/`
Part of #217
Signed-off-by: Andrew Seigner <siggy@buoyant.io>
Running `linkerd routes` for some resource was returning, besides the data for the resource, additional rows for each `ExternalName` service in the namespace.
Fixes#2216
Signed-off-by: Alejandro Pedraza <alejandro@buoyant.io>
Fixes#2077
When looking up service profiles, Linkerd always looks for the service profile objects in the Linkerd control namespace. This is limiting because service owners who wish to create service profiles may not have write access to the Linkerd control namespace.
Instead, we have the control plane look for the service profile in both the client namespace (as read from the proxy's `proxy_id` field from the GetProfiles request and from the service's namespace. If a service profile exists in both namespaces, the client namespace takes priority. In this way, clients may override the behavior dictated by the service.
Signed-off-by: Alex Leong <alex@buoyant.io>
The `linkerd check` command was doing limited validation on
ServiceProfiles.
Make ServiceProfile validation more complete, specifically validate:
- types of all fields
- presence of required fields
- presence of unknown fields
- recursive fields
Also move all validation code into a new `Validate` function in the
profiles package.
Validation of field types and required fields is handled via
`yaml.UnmarshalStrict` in the `Validate` function. This motivated
migrating from github.com/ghodss/yaml to a fork, sigs.k8s.io/yaml.
Fixes#2190
The Proxy API service lacked introspection of its internal state.
Introduce a new gRPC Discovery API, implemented by two servers:
1) Proxy API Server: returns a snapshot of discovery state
2) Public API Server: pass-through to the Proxy API Server
Also wire up a new `linkerd endpoints` command.
Fixes#2165
Signed-off-by: Andrew Seigner <siggy@buoyant.io>
Adds the ability to generate a service profile by running a tap for a configurable
amount of time, and using the route results from the routes seen during the tap.
e.g. `linkerd profile web --tap deploy/web -n emojivoto --tap-duration 2s`
# Problem
In order to switch Linkerd template rendering to use `.yaml` files, static
assets must be bundled in the Go binary for use by `linkerd install`.
# Solution
The solution should not affect the local development process of building and
testing.
[vfsgen](https://github.com/shurcooL/vfsgen) generates Go code that statically
implements the provided `http.FileSystem`. Paired with `go generate` and Go
[build tags](https://golang.org/pkg/go/build/), we can continue to use the
template files on disk when developing with no change required.
In `!prod` Go builds, the `cli/static/templates.go` file provides a
`http.FileSystem` to the local templates. In `prod` Go builds, `go generate
./cli` generates `cli/static/generated_templates.gogen.go` that statically
provides the template files.
When built with `-tags prod`, the executable will be built with the staticlly
generated file instead of the local files.
# Validation
The binaries were compiled locally with `bin/docker-build`. The binaries were
then tested with `bin/test-run (pwd)/target/cli/darwin/linkerd`. All tests
passed.
No change was required to successfully run `bin/go-run cli install`. No change
was required to run `bin/linkerd install`.
Fixes#2153
Signed-off-by: Kevin Leimkuhler <kevin@kleimkuhler.com>
In linkerd/linkerd2-proxy#186, the proxy supports configuration of TCP
keepalive values.
This change sets `LINKERD2_PROXY_INBOUND_ACCEPT_KEEPALIVE` and
`LINKERD2_PROXY_OUTBOUND_CONNECT_KEEPALIVE` to 10s when injecting the
proxy, so that remote connections are configured with a keepalive.
This configuration is NOT yet exposed through the CLI. This may be done
in a followup, if necessary.
Fixes#1949
Since 37ae423, deployments have been prefixed with linkerd-; however
the inject logic was not changed to take this into consideration when
constructing the controller's identity.
This means that the proxy's client to the control plane has been unable to
establish TLS'd communcation to the proxy-api. Previously, the proxy would
silently fall back to plaintext, but in master this behavior recently changed to
be stricter, so this bug will prevent the proxy from connecting to proxy-api
in any way.
* Add pod spec annotation to disable injection in CLI and auto-injector
* Remove support for linkerd.io/auto-inject label entirely
* Update based on review feedback
* Fix issue with finding the namespace of deployments applied to the default ns
Signed-off-by: Kevin Lingerfelt <kl@buoyant.io>
Fixes#2042
Adds a new field to service profile routes called `timeout`. Any requests to that route which take longer than the given timeout will be aborted and a 504 response will be returned instead. If the timeout field is not specified, a default timeout of 10 seconds is used.
Signed-off-by: Alex Leong <alex@buoyant.io>
Use `ca.NewCA()` for generating certs and keys for the proxy injector
- Remove from CA controller everything that dealt with the
webhook/proxy-injector
- Remove no longer needed proxy-injector volumes for 'trust-anchors' and
'webhook-secrets'
- Remove from the proxy-injector the retrieval of the trust anchor and
secrets
- tls flag during install is no longer needed for auto-inject to work
Fixes#2095 and fixes#2166
Signed-off-by: Alejandro Pedraza <alejandro@buoyant.io>
* Export RootOptions and BuildFirewallConfiguration so that the cni-plugin can use them.
* Created the cni-plugin based on istio-cni implementation
* Create skeleton files that need to be filled out.
* Create the install scripts and finish up plugin to write iptables
* Added in an integration test around the install_cni.sh and updated the script to handle the case where it isn't the only plugin. Removed the istio kubernetes.go file in favor of pkg/k8s; initial usage of this package; found and fixed the typo in the ClusterRole and ClusterRoleBinding; found the docker-build-cni-plugin script
* Corrected an incorrect name in the docker build file for cni-plugin
* Rename linkerd2-cni to linkerd-cni
* Fixup Dockerfile and clean up code a bit as well as logging statements.
* Update Gopkg.lock after master merge.
* Update test file to remove temporary tag.
* Fixed the command to run during the test while building up the docker run.
* Added attributions to applicable files; in the test file, use a different container for each test scenario and also print the docker logs to stdout when there is an error;
* Add the --no-init-container flag to install and inject. This flag will not output the initContainer and will add an annotation assuming that the cni will be used in this case.
* Update .travis.yml to build the cni-plugin docker image before running the tests.
* Workaround golint warnings.
* Create a new command to install the linkerd-cni plugin.
* Add the --no-init-container option to linkerd inject
* Use the setup ip tables annotation during the proxy auto inject webhook prevent/allow addition of an init container; move cni-plugin tests to the integration-test section of travis
* gate the cni-plugin tests with the -integration-tests flag; remove unnecessary deployment .yaml file.
* Incorporate PR Cleanup suggestions.
* Remove the SetupIPTablesLabel annotation and use config flags and the presence of the init container to determine whether the cni-plugin writes ip tables.
* Fix a logic bug in the cni-plugin code that prevented the iptables from being written; Address PR comments; make tests pass.
* Update go deps shas
* Changed the single file install-cni plugin filename to be .conf vs .conflist; Incorporated latest PR comments around spacing with the new renderer among others.
* Fix an issue with renaming .conf to .conflist when needed.
* Renamed some of the variables to try to make it more clear what is going on.
* Address final PR comments.
* Hide cni flags for the time being.
Signed-off-by: Cody Vandermyn <cody.vandermyn@nordstrom.com>
* Update client-go to 1.13.1
Fixes#2145
* Update Dockerfile-bin with new tag
* Update all the dockerfile tags
* Clean gopkg and do not apply cluster defaults
* Update for klog
* Match existing behavior with klog
* Add klog to gopkg.lock
* Update go-deps shas
* Update klog comment
* Update comment to be a non-sentence
# Problem
In order to refactor `install` to allow for a more flexible configuration, we
should start with the format of the YAML that it renders. Using the Helm
YAML format will make it easier add flexible configuration options in the
future. Currently, the rendered template that `install` produces does not
follow this format.
# Solution
Use the internals that Helm itself uses to render an inject template that
follows the same formatting rules. Helm's `template` cmd provides a good
outline of what is needed to make Linkerd's `install` cmd work as if it was
a Chart.
# Validation
There are no new tests, but there may not be anything to test at this stage.
This is a WIP PR towards the ultimate goal of `install` allowing a more
flexible configuration.
However, `install` now uses all the Helm `template` internals and therefore
satisfies the needed properties for Helm Charts.
Signed-off-by: Kevin Leimkuhler <kevin@kleimkuhler.com>
This branch removes the `--proxy-bind-timeout` flag from the
`linkerd inject` and `linkerd install` CLI commands, and the
`LINKERD2_PROXY_BIND_TIMEOUT` environment variable from their output.
This is in preparation for removing that timeout from the proxy (as
described in #2013).
I thought it was prudent to remove this from the CLIs before removing it
from the proxy, so we can't create a situation where the CLIs produce
output that results in broken proxy containers.
Fixes#2013
Signed-off-by: Eliza Weisman <eliza@buoyant.io>
When `GetProfiles` is called for a destination that does not have a service profile, the proxy-api service does not return any messages until a service profile is created for that service. This can be interpreted as hanging, and can make it difficult to calculate response latency metrics.
Change the behavior of the API to always return a service profile message immediately. If the service does not have a service profile, the default service profile is returned.
Signed-off-by: Alex Leong <alex@buoyant.io>
DaemonSet stats are not currently shown in the cli stat command, web ui
or grafana dashboard. This commit adds daemonset support for stat.
Update stat command's help message to reference daemonsets.
Update the public-api to support stats for daemonsets.
Add tests for stat summary and api.
Add daemonset get/list/watch permissions to the linkerd-controller
cluster role that's created using the install command.
Update golden expectation test files for install command
yaml manifest output.
Update web UI with daemonsets
Update navigation, overview and pages to list daemonsets and the pods
associated to them.
Add daemonset paths to server, and ui apps.
Add grafana dashboard for daemonsets; a clone of the deployment
dashboard.
Update dependencies and dockerfile hashes
Add DaemonSet support to tap and top commands
Fixes of #2006
Signed-off-by: Zak Knill <zrjknill@gmail.com>
Fixes#2119
When Linkerd is installed in single-namespace mode, the public-api container panics when it attempts to access watch service profiles.
In single-namespace mode, we no longer watch service profiles and return an informative error when the TopRoutes API is called.
Signed-off-by: Alex Leong <alex@buoyant.io>
* Introduce resource selector and deprecate namespace field for ListPods
* Changes from code review
* Properly deprecate the field
* Do not check for nil
* Fix the mockProm usage
* Protoc changes revert
* Changed from code review
Signed-off-by: Alena Varkockova <varkockova.a@gmail.com>
When debugging control plane issues or issues pertaining to a linkerd proxy, it can be cumbersome to get logs from affected containers quickly.
This PR adds a new `logs` command to the Linkerd CLI to surface log lines from any container within linkerd's control plane. This feature relies heavily on [stern](https://github.com/wercker/stern), which already provides this behavior. This PR integrates this package into the Linkerd CLI to allow users to quickly retrieve logs whenever they run into issues when using Linkerd.
Signed-off-by: Dennis Adjei-Baah <dennis@buoyant.io>
Fixes#1875
This change improves the `linkerd routes` command in a number of important ways:
* The restriction on the type of the `--to` argument is lifted and any resource type can now be used. Try `--to ns/books`, `--to po/webapp-ABCDEF`, `--to au/linkerd.io`, or even `--to svc`.
* All routes for the target will now be populated in the table, even if there are no Prometheus metrics for that route.
* [UNKNOWN] has been renamed to [DEFAULT]
* The `Service/Authority` column will now list `Service` in all cases except for when an authority target is explicitly requested.
```
$ linkerd routes deploy/traffic --to deploy/webapp
ROUTE SERVICE SUCCESS RPS LATENCY_P50 LATENCY_P95 LATENCY_P99
GET / webapp 100.00% 0.5rps 50ms 180ms 196ms
GET /authors/{id} webapp 100.00% 0.5rps 100ms 900ms 980ms
GET /books/{id} webapp 100.00% 0.9rps 38ms 93ms 99ms
POST /authors webapp 100.00% 0.5rps 35ms 48ms 50ms
POST /authors/{id}/delete webapp 100.00% 0.5rps 83ms 180ms 196ms
POST /authors/{id}/edit webapp 0.00% 0.0rps 0ms 0ms 0ms
POST /books webapp 45.16% 2.1rps 75ms 425ms 485ms
POST /books/{id}/delete webapp 100.00% 0.5rps 30ms 90ms 98ms
POST /books/{id}/edit webapp 56.00% 0.8rps 92ms 875ms 975ms
[DEFAULT] webapp 0.00% 0.0rps 0ms 0ms 0ms
```
This is all made possible by a shift in the way we handle the destination resource. When we get a request with a `ToResource`, we use the k8s API to find all Services which include at least one pod belonging to that resource. We then fetch all service profiles for those services and display the routes from those serivce profiles.
This shift in thinking also precipitates a change in the TopRoutes API where we no longer need special cases for `ToAll` (which can be specified by `--to au`) or `ToAuthority` (which can be specified by `--to au/<authority>`) and instead can use a `ToResource` to handle all cases.
Signed-off-by: Alex Leong <alex@buoyant.io>
The outputs of the `check` and `inject` commands did not vary much
between successful and failed executions, and were a bit verbose and
challenging to parse.
Reorganize output of `check` and `inject` commands, to provide more
output when errors occur, and less output when successful.
Specific changes:
`linkerd check`
- visually group checks by category
- introduce `hintURL`'s, to provide doc links when checks fail
- add spinners when retrying, remove additional retry lines
- colored unicode characters to indicate success/warning/failure
`linkerd inject`
- modify default output to mirror `kubectl apply`
- only output non-successful inject reports
- support `--verbose` flag to output all inject reports
Fixes#1471, #1653, #1656, #1739
Signed-off-by: Andrew Seigner <siggy@buoyant.io>
* Setup port-forwarding for linkerd dashboard command
* Output port-forward logs when --verbose flag is set
Signed-off-by: Kevin Lingerfelt <kl@buoyant.io>
This is a followup branch from #2023:
- delete `proxy/client.go`, move code to `destination-client`
- move `RenderTapEvent` and stat functions from `util` to `cmd`
Signed-off-by: Andrew Seigner <siggy@buoyant.io>
Commit 1: Enable lint check for comments
Part of #217. Follow up from #1982 and #2018.
A subsequent commit will fix the ci failure.
Commit 2: Address all comment-related linter errors.
This change addresses all comment-related linter errors by doing the
following:
- Add comments to exported symbols
- Make some exported symbols private
- Recommend via TODOs that some exported symbols should should move or
be removed
This PR does not:
- Modify, move, or remove any code
- Modify existing comments
Signed-off-by: Andrew Seigner <siggy@buoyant.io>
* add securityContext with runAsUser: {{.ProxyUID}} to the various containers in the install template
* Update golden to reflect new additions
* changed to a different user id than the proxy user id
* Added a controller-uid install option
* change the port that the proxy-injector runs
* The initContainers needs to be run as the root user.
* move security contexts to container level
Signed-off-by: Cody Vandermyn <cody.vandermyn@nordstrom.com>
* Add parameter to stats API to skip retrieving Prometheus stats
Used by the dashboard to populate list of resources.
Fixes#1022
Signed-off-by: Alejandro Pedraza <alejandro.pedraza@gmail.com>
* Prometheus queries check results were being ignored
* Refactor verifyPromQueries() to also test when no prometheus queries
should be generated
* Add test for SkipStats=true
Includes adding ability to public.GenStatSummaryResponse to not generate
basicStats
* Fix previous test
Rename snake case fields to camel case in service profile spec. This improves the way they are rendered when the `kubectl describe` command is used.
Signed-off-by: Alex Leong <alex@buoyant.io>
Add support for service profiles created on external (non-service) authorities. For example, this allows you to create a service profile named `linkerd.io` which will apply to calls made to `linkerd.io`.
This is done by changing the `LINKERD2_PROXY_DESTINATION_PROFILE_SUFFIXES` to `.` so that the proxy will attempt to lookup a service profile for any authority. We provide the `--disable-external-profiles` proxy flag to revert this behavior in case it is a problem.
We also refactor the proxy-api implementation of GetProfiles so that it does the profile lookup, regardless of if the authority looks like a Kubernetes service name or not. To simplify this, support for multiple resolves (which was unused) was removed.
Signed-off-by: Alex Leong <alex@buoyant.io>
When debugging issues, it's helpful to disable HTTP/2 upgrading to
simplify diagnostics.
This chagne adds an `enable-h2-ugprade` flag to _proxy-api_. When this
flag is set to false, the proxy-api will not suggest that meshed
endpoints are upgraded to use HTTP/2.
As a follow-up, a flag should be added to `install` to control how the
proxy-api is initialized.
We rework the routes command so that it can accept any Kubernetes resource, making it act much more similarly to the stat command.
Signed-off-by: Alex Leong <alex@buoyant.io>
We rename path to path_regex in the ServiceProfile CRD to make it clear that this field accepts a regular expression. We also take this opportunity to remove unnecessary line anchors from regular expressions now that these anchors are added in the proxy.
Signed-off-by: Alex Leong <alex@buoyant.io>
Filtering by Kubernetes job was not supported. Also filtering by any unknown
type caused a panic.
Add filtering support by Kubernetes job, with special case mapping `job` to
`k8s_job`, to not conflict with Prometheus' job label.
Fix panic when unknown type specified as a `--from` or `--to` flag.
Fix `job` label from `linkerd-proxy` overwriting Prometheus `job` label at
collection time. This caused all metrics collected by proxy sidecars in
Kubernetes jobs to be collected into an incorrect Prometheus job, rather than
the expected `linkerd-proxy` Prometheus job.
Fix `unsupported resource type` tap error message incorrectly printing the
target resource rather than the destination.
Set `--controller-log-level debug` in `install_test.go` for easier debugging.
Expose `slow-cooker`'s metrics via a k8s service in the tap integration test, to
validate proxy requests with a job as destination.
Fixes#1872
Part of #627
Signed-off-by: Andrew Seigner <siggy@buoyant.io>
This change alters the controller's Tap service to include route labels
when translating tap events, modifies the public API to include route
metadata in responses, and modifies the tap CLI command to include
rt_ labels in tap output (when -o wide is used).
* Adjust proxy, Prometheus, and Grafana probes
High `readinessProbe.initialDelaySeconds` values delayed the controller's
readiness by up to 30s, preventing cli commands from succeeding shortly after
control plane deployment.
Decrease `readinessProbe.initialDelaySeconds` in the proxy, Prometheus, and
Grafana to the default 0s. Also change `linkerd check` controller pod ordering
to: controller, prometheus, web, grafana.
Detailed probe changes:
- proxy
- decrease `readinessProbe.initialDelaySeconds` from 10s to 0s
- prometheus
- decrease `readinessProbe.initialDelaySeconds` from 30s to 0s
- decrease `readinessProbe.timeoutSeconds` from 30s to 1s
- decrease `livenessProbe.timeoutSeconds` from 30s to 1s
- grafana
- decrease `readinessProbe.initialDelaySeconds` from 30s to 0s
- decrease `readinessProbe.timeoutSeconds` from 30s to 1s
- decrease `readinessProbe.failureThreshold` from 10 to 3
- increase `livenessProbe.initialDelaySeconds` from 0s to 30s
Fixes#1804
Signed-off-by: Andrew Seigner <siggy@buoyant.io>
The `--open-api` flag is an alternative to the `--template` flag for the `linkerd profile` command. It reads an OpenAPI specification file (also called a swagger file) and uses it to generate a corresponding service profile.
Signed-off-by: Alex Leong <alex@buoyant.io>
When using `--proxy-auto-inject` with Kuberntes `v1.9.11`, observed auto
injector incorrectly merging list elements rather than inserting new
ones. This issue was not reproducible on `v1.10.3`.
For example, this input:
```
spec:
template:
spec:
containers:
- name: vote-bot
command:
- emojivoto-vote-bot
```
Would yield:
```
spec:
template:
spec:
containers:
- name: linkerd-proxy
command:
- emojivoto-vote-bot
- name: vote-bot
command:
- emojivoto-vote-bot
```
This change replaces json patch specs like
`/spec/template/spec/containers/0` with
`/spec/template/spec/containers/-`. The former is intended to insert at
the beggining of a list, the latter at the end. This also simplifies the
code a bit and more closely aligns with the intent of injecting at the
end of lists.
Signed-off-by: Andrew Seigner <siggy@buoyant.io>
Add a barebones ListServices endpoint, in support of autocomplete for services.
As we develop service profiles, this endpoint could probably be used to describe
more aspects of services (like, if there were some way to check whether a
service profile was enabled or not).
Accessible from the web UI via http://localhost:8084/api/services
The `linkerd` routes command only supports outbound metrics queries (i.e. ones with the `--from` flag). Inbound queries (i.e. ones without the `--from` flag) never return any metrics.
We update the proxy version and use the new canonicalized form for dst labels to gain support for inbound metrics as well.
Signed-off-by: Alex Leong <alex@buoyant.io>
The tap server accesses protobuf fields directly instead of using the
`Get*()` accessors. The accessors are necessary to prevent dereferencing
a nil pointer and crashing the tap service.
Furthermore, these maps are explicitly initialized when `nil` to support
label hydration.
Add a routes command which displays per-route stats for services that have service profiles defined.
This change has three parts:
* A new public-api RPC called `TopRoutes` which serves per-route stat data about a service
* An implementation of TopRoutes in the public-api service. This implementation reads per-route data from Prometheus. This is very similar to how the StatSummaries RPC and much of the code was able to be refactored and shared.
* A new CLI command called `routes` which displays the per-route data in a tabular or json format. This is very similar to the `stat` command and much of the code was able to be refactored and shared.
Note that as of the currently targeted proxy version, only outbound route stats are supported so the `--from` flag must be included in order to see data. This restriction will be lifted in an upcoming change once we add support for inbound route stats as well.
Signed-off-by: Alex Leong <alex@buoyant.io>
# Problem
When we add a `--from` query to `linkerd stat au` we get more rows than if we would have just run `linkerd stat au`.
Adding a `--from` causes an extra row to be added, and the named authority to be ignored (this is the result we would have expected when running `linkerd stat au -n emojivoto --from deploy/web`).
# Solution
Destination query labels are now appended to `labels` so that those labels can be filtered on.
# Validation
Tests have been updated to reflect the expected expected destination labels now appended in `--from` queries.
Fixes#1766
Signed-off-by: Kevin Leimkuhler <kevin@kleimkuhler.com>
* Refactor util.BuildResource so it can deal with multiple resources
First step to address #1487: Allow stat summary to query for multiple
resources
Signed-off-by: Alejandro Pedraza <alejandro.pedraza@gmail.com>
* Update the stat cli help text to explain the new multi resource querying ability
Propsal for #1487: Allow stat summary to query for multiple resources
Signed-off-by: Alejandro Pedraza <alejandro.pedraza@gmail.com>
* Allow stat summary to query for multiple resources
Implement this ability by issuing parallel requests to requestStatsFromAPI()
Proposal for #1487
Signed-off-by: Alejandro Pedraza <alejandro.pedraza@gmail.com>
* Update tests as part of multi-resource support in `linkerd stat` (#1487)
- Refactor stat_test.go to reuse the same logic in multiple tests, and
add cases and files for json output.
- Add a couple of cases to api_utils_test.go to test multiple resources
validation.
Signed-off-by: Alejandro Pedraza <alejandro.pedraza@gmail.com>
* `linkerd stat` called with multiple resources should keep an ordering (#1487)
Add SortedRes holding the order of resources to be followed when
querying `linkerd stat` with multiple resources
Signed-off-by: Alejandro Pedraza <alejandro.pedraza@gmail.com>
* Extra validations for `linkerd stat` with multiple resources (#1487)
Signed-off-by: Alejandro Pedraza <alejandro.pedraza@gmail.com>
* `linkerd stat` resource grouping, ordering and name prefixing (#1487)
- Group together stats per resource type.
- When more than one resource, prepend name with type.
- Make sure tables always appear in the same order.
Signed-off-by: Alejandro Pedraza <alejandro.pedraza@gmail.com>
* Allow `linkerd stat` to be called with multiple resources
A few final refactorings as per code review.
Fixes#1487
Signed-off-by: Alejandro Pedraza <alejandro.pedraza@gmail.com>
This commit removes duplicate logic that loads Kubernetes config and
replaces it with GetConfig from pkg/k8s. This also allows to load
config from default sources like $KUBECONFIG instead of explicitly
passing -kubeconfig option to controller components.
Signed-off-by: Igor Zibarev <zibarev.i@gmail.com>
We make several changes to the service profile spec to make service profiles more ergonomic and to make them more consistent with the destination profile API.
* Allow multiple fields to be simultaneously set on a RequestMatch or ResponseMatch condition. Doing so is equivalent to combining the fields with an "all" condition.
* Rename "responses" to "response_classes"
* Change "IsSuccess" to "is_failure"
Signed-off-by: Alex Leong <alex@buoyant.io>
A container called `proxy-api` runs in the Linkerd2 controller pod. This container listens on port 8086 and serves the proxy-api but does nothing other than forward gRPC requests to the destination container which listens on port 8089.
We remove the proxy-api container altogether and change the destination container to listen on port 8086 instead of 8089. The result is that clients still use the proxy-api by connecting to `proxy-api.<ns>.svc.cluster.local:8086` but the controller has one fewer containers. This results in a simpler system that is easier to reason about.
Signed-off-by: Alex Leong <alex@buoyant.io>
Service profiles must be named in the form `"<service>.<namespace>"`. This is inconsistent with the fully normalized domain name that the proxy sends to the controller. It also does not permit creating service profiles for non-Kubernetes services.
We switch to requiring that service profiles must be named with the FQDN of their service. For Kubernetes services, this is `"<service>.<namespace>.svc.cluster.local"`.
This change alone is not sufficient for allowing service profile for non-Kubernetes services because the k8s resolver will ignore any DNS names which are not Kubernetes services. Further refactoring of the resolver will be required to allow looking up non-Kubernetes service profiles in Kuberenetes.
Signed-off-by: Alex Leong <alex@buoyant.io>
The `proxy-api` service included a stub implementation of `GetProfile`
instead of forwarding requests to the `destination` service.
This change fills in the proxy-api service's `GetProfile` implementation
to forward requests to the destination service.
Fix broken docker build by moving Service Profile conversion and validation into `/pkg`.
Fix broken integration test by adding service profile validation output to `check`'s expected output.
Testing done:
* `gotest -v ./...`
* `bin/docker-build`
* `bin/test-run (pwd)/bin/linkerd`
Signed-off-by: Alex Leong <alex@buoyant.io>
Add a check to `linkerd check` which validates all service profile resources. In particular it checks:
* does the service profile refer to an existent service
* is the service profile valid
Signed-off-by: Alex Leong <alex@buoyant.io>
We implement the getProfiles method in the destination service. This method returns a stream of destination profiles for a given authority. It does this by looking up the ServiceProfile resource in the controller namespace named `<svc>.<ns>` where `<svc>` is the name of the service and `<ns>` is the namespace of the service.
This PR includes:
* Adding a ServiceProfile Custom Resource Definition to linkerd install
* A watch based implementation of the getProfiles method in the destination service, similar to the implementation of get.
* An update to the destination client script that allows querying the getProfiles method.
Signed-off-by: Alex Leong <alex@buoyant.io>
* Ensure that the proxy injector mutating webhook preserves the original labels
and annotations
The deployment's selector must also match the pod template labels in
newer version of Kubernetes.
This resolves issue #1756.
* Add the Linkerd labels to the deployment metadata during auto proxy
injection
* Remove selector match labels JSON patch from proxy injector
This isn't needed to resolve the selector label mismatch errors.
Signed-off-by: ihcsim <ihcsim@gmail.com>
Appending proxy-init to the end of the list ensures that it won't
interfere with other init containers from accessing the network,
before the proxy container is created.
This resolves bug #1760
Signed-off-by: ihcsim <ihcsim@gmail.com>
Added support for json output in `linkerd stat` through a new (-o|--output)=json option.
Fixes#1417
Signed-off-by: Alejandro Pedraza <alejandro.pedraza@gmail.com>
Oliver Gould