## edge-20.1.3
* CLI
* Introduced `linkerd check --pre --linkerd-cni-enabled`, used when the CNI
plugin is used, to check it has been properly installed before proceeding
with the control plane installation
* Added support for the `--as-group` flag so that users can impersonate
groups for Kubernetes operations (thanks @mayankshah160!)
* Controller
* Fixed an issue where an override of the Docker registry was not being
applied to debug containers (thanks @javaducky!)
* Added check for the Subject Alternate Name attributes to the API server
when access restrictions have been enabled (thanks @javaducky!)
* Added support for arbitrary pod labels so that users can leverage the
Linkerd provided Prometheus instance to scrape for their own labels
(thanks @daxmc99!)
* Fixed an issue with CNI config parsing
Signed-off-by: Kevin Leimkuhler <kevin@kleimkuhler.com>
## edge-20.1.2
* CLI
* Added HA specific checks to `linkerd check` to ensure that the `kube-system`
namespace has the `config.linkerd.io/admission-webhooks:disabled`
label set
* Fixed a problem causing the presence of unnecessary empty fields in
generated resource definitions (thanks @mayankshah1607)
* Proxy
* Fixed an issue that could cause the OpenCensus exporter to stall
* Internal
* Added validation to incoming sidecar injection requests that ensures
the value of `linkerd.io/inject` is either `enabled` or `disabled`
(thanks @mayankshah1607)
Signed-off-by: Zahari Dichev <zaharidichev@gmail.com>
## edge-20.1.1
This edge release includes experimental improvements to the Linkerd proxy's
request buffering and backpressure infrastructure.
Additionally, we've fixed several bugs when installing Linkerd with Helm,
updated the CLI to allow using both port numbers _and_ port ranges with the
`--skip-inbound-ports` and `--skip-outbound-ports` flags, and fixed a dashboard
error that can occur if the dashboard is open in a browser while updating Linkerd.
**Note**: The `linkerd-proxy` version included with this release is more
experimental than usual. We'd love your help testing, but be aware that there
might be stability issues.
* CLI
* Added the ability to pass both port numbers and port ranges to
`--skip-inbound-ports` and `--skip-outbound-ports` (thanks to @javaducky!)
* Controller
* Fixed a race condition in the `linkerd-web` service
* Updated Prometheus to 2.15.2 (thanks @Pothulapati)
* Web UI
* Fixed an error when refreshing an already open dashboard when the Linkerd
version has changed
* Proxy
* Internal changes to the proxy's request buffering and backpressure
infrastructure
* Helm
* Fixed the `linkerd-cni` Helm chart not setting proper namespace annotations
and labels
* Fixed certificate issuance lifetime not being set when installing through
Helm
* More improvements to Helm best practices (thanks to @Pothulapati!)
* Changes for edge-19.12.3
Signed-off-by: Charles Pretzer <charles@buoyant.io>
* CHANGES.md updates based on feedback
Signed-off-by: Charles Pretzer <charles@buoyant.io>
* Fix flag name
Signed-off-by: Charles Pretzer <charles@buoyant.io>
## edge-19.12.1
* CLI
* Added condition to the `linkerd stat` command that requires a window size
of at least 15 seconds to work properly with Prometheus
* Web UI
* Fixed a table wrap issue in the resource detail view that made sidebar
font size inconsistent
* Internal
* Fixed whitespace path handling in non-docker build scripts (thanks
@joakimr-axis!)
* Removed calico logutils dependency that was incompatible with go 1.13
* Updated Helm templates to use fully-qualified variable references based
upon Helm best practices (thanks @javaducky!)
* Added new browser tests for URL routing in dashboard
Signed-off-by: Kevin Leimkuhler <kleimkuhler@icloud.com>
## edge-19.11.3
* CLI
* Added a check that ensures using `--namespace` and `--all-namespaces`
results in an error as they are mutually exclusive
* Internal
* Fixed an issue causing `tap`, `injector` and `sp-validator` to use
old certificates after `helm upgrade` due to not being restarted
* Fixed incomplete Swagger definition of the tap api, causing benign
error logging in the kube-apiserver
Signed-off-by: zaharidichev <zaharidichev@gmail.com>
## edge-19.11.2
* CLI
* Added a `Dashboard.Replicas` parameter to the Linkerd Helm chart to allow
configuring the number of dashboard replicas (thanks @KIVagant!)
* Removed redundant service profile check (thanks @alenkacz!)
* Web UI
* Added `linkerd check` to the dashboard in the `/controlplane` view
* Added request and response headers to the `tap` expanded view in the
dashboard
* Internal
* Removed the destination container from the linkerd-controller deployment as
it now runs in the linkerd-destination deployment
* Upgraded Go to version 1.13.4
Signed-off-by: Alex Leong <alex@buoyant.io>
## edge-19.10.5
This edge release adds support for integrating Linkerd's public-key
infrastructure with an external certificate issuer such as [`cert-manager`],
adds distributed tracing support to the Linkerd control plane, and adds
protection against DNS rebinding attacks to the web dashboard. In addition, it
includes several improvements to the Linkerd CLI.
* CLI
* Added a new `--identity-external-issuer` flag to `linkerd install` that
configures Linkerd to use certificates issued by an external certificate
issuer (such as `cert-manager`)
* Added support for injecting a namespace to `linkerd inject` (thanks
@mayankshah1607!)
* Added checks to `linkerd check --preinstall` ensuring Kubernetes Secrets
can be created and accessed
* Fixed `linkerd tap` sometimes displaying incorrect pod names for unmeshed
IPs that match multiple running pods
* Controller
* Added support for using trust anchors from an external certificate issuer
(such as `cert-mananger`) to the `linkerd-identity` service
* Web UI
* Added `Host:` header validation to the `linkerd-web` service, to protect
against DNS rebinding attacks
* Internal
* Added new `--trace-collector` and `--trace-collector-svc-account` flags to
`linkerd inject` that configures the OpenCensus trace collector used by
proxies in the injected workload (thanks @Pothulapati!)
* Added a new `--control-plane-tracing` flag to `linkerd install` that enables
distributed tracing in the control plane (thanks @Pothulapati!)
* Added distributed tracing support to the control plane (thanks
@Pothulapati!)
Also, thanks to @joakimr-axis for several fixes and improvements to internal
build scripts!
* Release notes for edge-19.10.4
Signed-off-by: zaharidichev <zaharidichev@gmail.com>
* updates based on reviews
Signed-off-by: Charles Pretzer <charles@buoyant.io>
## edge-19.9.4
This edge release introduces a redesigned sidebar in dashboard! The goal of the
redesign was to reduce load on Prometheus and simplify navigation by providing
top-level views centered around namespaces and workloads.
* CLI
* Introduced a new `--cluster-domain` flag to the `linkerd install` command
that allows setting a custom cluster domain (thanks @arminbuerkle!)
* Fixed the `linkerd endpoints` command to use the correct Destination API
address (thanks @Pothulapati!)
* Added `--disable-heartbeat` flag for `linkerd` `install|upgrade` commands
* Controller
* Instrumented the proxy-injector to provide additional metrics about
injection (thanks @Pothulapati!)
* Added support for `config.linkerd.io/admission-webhooks: disabled` label on
namespaces so that the pods creation events in these namespaces are ignored
by the proxy injector; this fixes situations in HA deployments where the
proxy-injector is installed in `kube-system` (thanks @hasheddan!)
* Web UI
* Workloads are now viewed by namespace, with an "All Namespaces" option, to
improve dashboard performance
* Proxy
* Added experimental distributed tracing support
Signed-off-by: Kevin Leimkuhler <kleimkuhler@icloud.com>
This edge release adds traffic splits into the Linkerd dashboard as well as a
variety of other improvements.
* CLI
* Improved the error message when the CLI cannot connect to Kubernetes (thanks
@alenkacz!)
* Added `--address` flag to `linkerd dashboard` (thanks @bmcstdio!)
* Controller
* Fixed an issue where the proxy-injector had insufficient RBAC permissions
* Added support for disabling the heartbeat cronjob (thanks @kevtaylor!)
* Proxy
* Decreased proxy Docker image size by removing bundled debug tools
* Fixed an issue where the incorrect content-length could be set for GET
requests with bodies
* Web UI
* Added trafficsplits as a resource to the dashboard, including a trafficsplit
detail page
* Internal
* Added support for Kubernetes 1.16
Signed-off-by: Alex Leong <alex@buoyant.io>
## edge-19.8.7
* CLI
* Added a global `--cluster-domain` flag to `linkerd install` to allow
installing Linkerd into a Kubernetes cluster that uses a base domain other
than `cluster.local.` (thanks @arminbuerkle!)
* Web UI
* Fixed an issue that caused unnecessary Prometheus queries, reducing load on
Prometheus
* Control Plane
* Added Kubernetes events (and log lines) when the proxt injector injects a
deployment, and when injection is skipped
* Proxy
* Changed the proxy to require the `LINKERD2_PROXY_DESTINATION_SVC_ADDR`
environment variable when starting up
Signed-off-by: Eliza Weisman <eliza@buoyant.io>
**Significant Update**
This edge release introduces a new tap APIService. The Kubernetes apiserver
authenticates the requesting tap user and then forwards tap requests to the new
tap APIServer. The `linkerd tap` command now makes requests against the
APIService.
With this release, users must be authorized via RBAC to use the `linkerd tap`
command. Specifically `linkerd tap` requires the `watch` verb on all resources
in the `tap.linkerd.io/v1alpha1` APIGroup. More granular access is also
available via sub-resources such as `deployments/tap` and `pods/tap`.
* CLI
* Added a check to the `linkerd check` command to validate the user has
privileges necessary to create CronJobs
* Introduced the `linkerd --as` flag which allows users to impersonate another
user for Kubernetes operations
* The `linkerd tap` command now makes requests against the tap APIService
* Controller
* Added HTTP security headers on all dashboard responses
* Fixed nil pointer dereference in the destination service when an endpoint
does not have a `TargetRef`
* Added resource limits when HA is enabled
* Added RSA support to TLS libraries
* Updated the destination service to return `InvalidArgument` for external
name services so that the proxy does not immediately fail the request
* The `l5d-require-id` header is now set on tap requests so that a connection
is established over TLS
* Introduced the `APIService/v1alpha1.tap.linkerd.io` global resource
* Introduced the `ClusterRoleBinding/linkerd-linkerd-tap-auth-delegator`
global resource
* Introduced the `Secret/linkerd-tap-tls` resource into the `linkerd`
namespace
* Introduced the `RoleBinding/linkerd-linkerd-tap-auth-reader` resource into
the `kube-system` namespace
* Proxy
* Added the `LINKERD2_PROXY_TAP_SVC_NAME` environment variable so that the tap
server attempts to authorize client identities
* Internal
* Replaced `dep` with Go modules for dependency management
Signed-off-by: Kevin Leimkuhler <kleimkuhler@icloud.com>
## stable-2.4.0
This release adds traffic splitting functionality, support for the Kubernetes
Service Mesh Interface (SMI), graduates high-availability support out of
experimental status, and adds a tremendous list of other improvements,
performance enhancements, and bug fixes.
Linkerd's new traffic splitting feature allows users to dynamically control the
percentage of traffic destined for a service. This powerful feature can be used
to implement rollout strategies like canary releases and blue-green deploys.
Support for the [Service Mesh Interface](https://smi-spec.io) (SMI) makes it
easier for ecosystem tools to work across all service mesh implementations.
Along with the introduction of optional install stages via the `linkerd install
config` and `linkerd install control-plane` commands, the default behavior of
the `linkerd inject` command only adds annotations and defers injection to the
always-installed proxy injector component.
Finally, there have been many performance and usability improvements to the
proxy and UI, as well as production-ready features including:
* A new `linkerd edges` command that provides fine-grained observability into
the TLS-based identity system
* A `--enable-debug-sidecar` flag for the `linkerd inject` command that improves
debugging efforts
Linkerd recently passed a CNCF-sponsored security audit! Check out the in-depth
report [here](https://github.com/linkerd/linkerd2/blob/master/SECURITY_AUDIT.pdf).
To install this release, run: `curl https://run.linkerd.io/install | sh`
**Upgrade notes**: Use the `linkerd upgrade` command to upgrade the control
plane. This command ensures that all existing control plane's configuration and
mTLS secrets are retained. For more details, please see the [upgrade
instructions](https://linkerd.io/2/tasks/upgrade/#upgrade-notice-stable-2-4-0) for more details.
**Special thanks to**: @alenkacz, @codeman9, @dwj300, @jackprice, @liquidslr
@matej-g, @Pothulapati, @zaharidichev,
**Full release notes**:
* CLI
* **Breaking Change** Removed the `--proxy-auto-inject` flag, as the proxy
injector is now always installed
* **Breaking Change** Replaced the `--linkerd-version` flag with the
`--proxy-version` flag in the `linkerd install` and `linkerd upgrade`
commands, which allows setting the version for the injected proxy sidecar
image, without changing the image versions for the control plane
* Introduced install stages: `linkerd install config` and `linkerd install
control-plane`
* Introduced upgrade stages: `linkerd upgrade config` and `linkerd upgrade
control-plane`
* Introduced a new `--from-manifests` flag to `linkerd upgrade` allowing
manually feeding a previously saved output of `linkerd install` into the
command, instead of requiring a connection to the cluster to fetch the
config
* Introduced a new `--manual` flag to `linkerd inject` to output the proxy
sidecar container spec
* Introduced a new `--enable-debug-sidecar` flag to `linkerd inject`, that
injects a debug sidecar to inspect traffic to and from the meshed pod
* Added a new check for unschedulable pods and PSP issues (thanks,
@liquidslr!)
* Disabled the spinner in `linkerd check` when running without a TTY
* Ensured the ServiceAccount for the proxy injector is created before its
Deployment to avoid warnings when installing the proxy injector (thanks,
@dwj300!)
* Added a `linkerd check config` command for verifying that `linkerd install
config` was successful
* Improved the help documentation of `linkerd install` to clarify flag usage
* Added support for private Kubernetes clusters by changing the CLI to connect
to the control plane using a port-forward (thanks, @jackprice!)
* Fixed `linkerd check` and `linkerd dashboard` failing when any control plane
pod is not ready, even when multiple replicas exist (as in HA mode)
* **New** Added a `linkerd edges` command that shows the source and
destination name and identity for proxied connections, to assist in
debugging
* Tap can now be disabled for specific pods during injection by using the
`--disable-tap` flag, or by using the `config.linkerd.io/disable-tap`
annotation
* Introduced pre-install healthcheck for clock skew (thanks, @matej-g!)
* Added a JSON option to the `linkerd edges` command so that output is
scripting friendly and can be parsed easily (thanks @alenkacz!)
* Fixed an issue when Linkerd is installed with `--ha`, running `linkerd
upgrade` without `--ha` will disable the high availability control plane
* Fixed an issue with `linkerd upgrade` where running without `--ha` would
unintentionally disable high availability features if they were previously
enabled
* Added a `--init-image-version` flag to `linkerd inject` to override the
injected proxy-init container version
* Added the `--linkerd-cni-enabled` flag to the `install` subcommands so that
`NET_ADMIN` capability is omitted from the CNI-enabled control plane's PSP
* Updated `linkerd check` to validate the caller can create
`PodSecurityPolicy` resources
* Added a check to `linkerd install` to prevent installing multiple control
planes into different namespaces avoid conflicts between global resources
* Added support for passing a URL directly to `linkerd inject` (thanks
@Pothulapati!)
* Added more descriptive output to the `linkerd check` output for control
plane ReplicaSet readiness
* Refactored the `linkerd endpoints` to use the same interface as used by the
proxy for service discovery information
* Fixed a bug where `linkerd inject` would fail when given a path to a file
outside the current directory
* Graduated high-availability support out of experimental status
* Modified the error message for `linkerd install` to provide instructions for
proceeding when an existing installation is found
* Controller
* Added Go pprof HTTP endpoints to all control plane components' admin servers
to better assist debugging efforts
* Fixed bug in the proxy injector, where sporadically the pod workload owner
wasn't properly determined, which would result in erroneous stats
* Added support for a new `config.linkerd.io/disable-identity` annotation to
opt out of identity for a specific pod
* Fixed pod creation failure when a `ResourceQuota` exists by adding a default
resource spec for the proxy-init init container
* Fixed control plane components failing on startup when the Kubernetes API
returns an `ErrGroupDiscoveryFailed`
* Added Controller Component Labels to the webhook config resources (thanks,
@Pothulapati!)
* Moved the tap service into its own pod
* **New** Control plane installations now generate a self-signed certificate
and private key pair for each webhook, to prepare for future work to make
the proxy injector and service profile validator HA
* Added the ` config.linkerd.io/enable-debug-sidecar` annotation allowing the
`--enable-debug-sidecar` flag to work when auto-injecting Linkerd proxies
* Added multiple replicas for the `proxy-injector` and `sp-validator`
controllers when run in high availability mode (thanks to @Pothulapati!)
* Defined least privilege default security context values for the proxy
container so that auto-injection does not fail (thanks @codeman9!)
* Default the webhook failure policy to `Fail` in order to account for
unexpected errors during auto-inject; this ensures uninjected applications
are not deployed
* Introduced control plane's PSP and RBAC resources into Helm templates; these
policies are only in effect if the PSP admission controller is enabled
* Removed `UPDATE` operation from proxy-injector webhook because pod mutations
are disallowed during update operations
* Default the mutating and validating webhook configurations `sideEffects`
property to `None` to indicate that the webhooks have no side effects on
other resources (thanks @Pothulapati!)
* Added support for the SMI TrafficSplit API which allows users to define
traffic splits in TrafficSplit custom resources
* Added the `linkerd.io/control-plane-ns` label to all Linkerd resources
allowing them to be identified using a label selector
* Added Prometheus metrics for the Kubernetes watchers in the destination
service for better visibility
* Proxy
* Replaced the fixed reconnect backoff with an exponential one (thanks,
@zaharidichev!)
* Fixed an issue where load balancers can become stuck
* Added a dispatch timeout that limits the amount of time a request can be
buffered in the proxy
* Removed the limit on the number of concurrently active service discovery
queries to the destination service
* Fix an epoll notification issue that could cause excessive CPU usage
* Added the ability to disable tap by setting an env var (thanks,
@zaharidichev!)
* Changed the proxy's routing behavior so that, when the control plane does
not resolve a destination, the proxy forwards the request with minimal
additional routing logic
* Fixed a bug in the proxy's HPACK codec that could cause requests with very
large header values to hang indefinitely
* Fixed a memory leak that can occur if an HTTP/2 request with a payload ends
before the entire payload is sent to the destination
* The `l5d-override-dst` header is now used for inbound service profile
discovery
* Added errors totals to `response_total` metrics
* Changed the load balancer to require that Kubernetes services are resolved
via the control plane
* Added the `NET_RAW` capability to the proxy-init container to be compatible
with `PodSecurityPolicy`s that use `drop: all`
* Fixed the proxy rejecting HTTP2 requests that don't have an `:authority`
* Improved idle service eviction to reduce resource consumption for clients
that send requests to many services
* Fixed proxied HTTP/2 connections returning 502 errors when the upstream
connection is reset, rather than propagating the reset to the client
* Changed the proxy to treat unexpected HTTP/2 frames as stream errors rather
than connection errors
* Fixed a bug where DNS queries could persist longer than necessary
* Improved router eviction to remove idle services in a more timely manner
* Fixed a bug where the proxy would fail to process requests with obscure
characters in the URI
* Web UI
* Added the Font Awesome stylesheet locally; this allows both Font Awesome and
Material-UI sidebar icons to display consistently with no/limited internet
access (thanks again, @liquidslr!)
* Removed the Authorities table and sidebar link from the dashboard to prepare
for a new, improved dashboard view communicating authority data
* Fixed dashboard behavior that caused incorrect table sorting
* Removed the "Debug" page from the Linkerd dashboard while the functionality
of that page is being redesigned
* Added an Edges table to the resource detail view that shows the source,
destination name, and identity for proxied connections
* Improved UI for Edges table in dashboard by changing column names, adding a
"Secured" icon and showing an empty Edges table in the case of no returned
edges
* Internal
* Known container errors were hidden in the integration tests; now they are
reported in the output without having the tests fail
* Fixed integration tests by adding known proxy-injector log warning to tests
* Modified the integration test for `linkerd upgrade` in order to test
upgrading from the latest stable release instead of the latest edge and
reflect the typical use case
* Moved the proxy-init container to a separate `linkerd/proxy-init` Git
repository
Signed-off-by: Kevin Leimkuhler <kleimkuhler@icloud.com>
## edge-19.7.3
* CLI
* Graduated high-availability support out of experimental status
* Modified the error message for `linkerd install` to provide instructions for
proceeding when an existing installation is found
* Controller
* Added Prometheus metrics for the Kubernetes watchers in the destination
service for better visibility
Signed-off-by: Kevin Leimkuhler <kleimkuhler@icloud.com>
* CLI
* Refactored the `linkerd endpoints` to use the same interface as used by the
proxy for service discovery information
* Fixed a bug where `linkerd inject` would fail when given a path to a file
outside the current directory
* Proxy
* Fixed a bug where DNS queries could persist longer than necessary
* Improved router eviction to remove idle services in a more timely manner
* Fixed a bug where the proxy would fail to process requests with obscure
characters in the URI
Signed-off-by: Alex Leong <alex@buoyant.io>
* CLI
* Added more descriptive output to the `linkerd check` output for control
plane ReplicaSet readiness
* **Breaking change** Renamed `config.linkerd.io/debug` annotation to
`config.linkerd.io/enable-debug-sidecar`, to match the
`--enable-debug-sidecar` CLI flag that sets it
* Fixed a bug in `linkerd edges` that caused incorrect identities to be
displayed when requests were sent from two or more namespaces
* Controller
* Added the `linkerd.io/control-plane-ns` label to the SMI Traffic Split CRD
* Proxy
* Fixed proxied HTTP/2 connections returning 502 errors when the upstream
connection is reset, rather than propagating the reset to the client
* Changed the proxy to treat unexpected HTTP/2 frames as stream errors rather
than connection errors
Signed-off-by: Eliza Weisman <eliza@buoyant.io>
## edge-19.6.4
This release adds support for the SMI [Traffic Split](https://github.com/deislabs/smi-spec/blob/master/traffic-split.md)
API. Creating a TrafficSplit resource will cause Linkerd to split traffic
between the specified backend services. Please see [the spec](https://github.com/deislabs/smi-spec/blob/master/traffic-split.md)
for more details.
* CLI
* Added a check to `install` to prevent installing multiple control planes
into different namespaces
* Added support for passing a URL directly to `linkerd inject` (thanks
@Pothulapati!)
* Added the `--all-namespaces` flag to `linkerd edges`
* Controller
* Added support for the SMI TrafficSplit API which allows users to define
traffic splits in TrafficSplit custom resources
* Web UI
* Improved UI for Edges table in dashboard by changing column names, adding a
"Secured" icon and showing an empty Edges table in the case of no returned
edges
Signed-off-by: Alex Leong <alex@buoyant.io>
## edge-19.6.3
* CLI
* Updated `linkerd check` to validate the caller can create
`PodSecurityPolicy` resources
* Controller
* Default the mutating and validating webhook configurations `sideEffects`
property to `None` to indicate that the webhooks have no side effects on
other resources (thanks @Pothulapati!)
* Proxy
* Added the `NET_RAW` capability to the proxy-init container to be compatible
with `PodSecurityPolicy`s that use `drop: all`
* Fixed the proxy rejecting HTTP2 requests that don't have an `:authority`
* Improved idle service eviction to reduce resource consumption for clients
that send requests to many services
* Web UI
* Removed the "Debug" page from the Linkerd dashboard while the functionality
of that page is being redesigned
* Added an Edges table to the resource detail view that shows the source,
destination name, and identity for proxied connections
Signed-off-by: Kevin Leimkuhler <kleimkuhler@icloud.com>
## edge-19.6.2
* CLI
* Added the `--linkerd-cni-enabled` flag to the `install` subcommands so that
`NET_ADMIN` capability is omitted from the CNI-enabled control plane's PSP
* Controller
* Default to least-privilege security context values for the proxy container
so that auto-inject does not fail on restricted PSPs (thanks @codeman9!)
* Defined least privilege default security context values for the proxy
container so that auto-injection does not fail on (thanks @codeman9!)
* Default the webhook failure policy to `Fail` in order to account for
unexpected errors during auto-inject; this ensures uninjected applications
are not deployed
* Introduced control plane's PSP and RBAC resources into Helm templates;
these policies are only in effect if the PSP admission controller is
enabled
* Fixed MWC namespace value so that when installing multiple control planes,
there is a unique configuration for each one
* Removed `UPDATE` operation from proxy-injector webhook because pod
mutations are disallowed during update operations
* Proxy
* The `l5d-override-dst` header is now used for inbound service profile
discovery
* Include errors in `response_total` metrics
* Changed the load balancer to require that Kubernetes services are resolved
via the control plane
* Web UI
* Fixed dashboard behavior that caused incorrect table sorting
Signed-off-by: Kevin Leimkuhler <kleimkuhler@icloud.com>
## edge-19.6.1
* CLI
* Fixed an issue where, when Linkerd is installed with `--ha`, running
`linkerd upgrade` without `--ha` will disable the high availability
control plane
* Added a `--init-image-version` flag to `linkerd inject` to override the
injected proxy-init container version
* Controller
* Added multiple replicas for the `proxy-injector` and `sp-validator`
controllers when run in high availability mode (thanks to @Pothulapati!)
* Proxy
* Fixed a memory leak that can occur if an HTTP/2 request with a payload
ends before the entire payload is sent to the destination
* Internal
* Moved the proxy-init container to a separate `linkerd/proxy-init` Git
repository
## stable-2.3.2
This stable release fixes a memory leak in the proxy.
To install this release, run: `curl https://run.linkerd.io/install | sh`
**Full release notes**:
* Proxy
* Fixed a memory leak that can occur if an HTTP/2 request with a payload
ends before the entire payload is sent to the destination
Signed-off-by: Eliza Weisman <eliza@buoyant.io>
## edge-19.5.4
* CLI
* Added a JSON option to the `linkerd edges` command so that output is
scripting friendly and can be parsed easily (thanks @alenkacz!)
* Controller
* **New** Control plane installations now generate a self-signed certificate
and private key pair for each webhook, to prepare for future work to make
the proxy injector and service profile validator HA
* Added a debug container annotation, allowing the `--enable-debug-sidecar`
flag to work when auto-injecting Linkerd proxies
* Proxy
* Changed the proxy's routing behavior so that, when the control plane does
not resolve a destination, the proxy forwards the request with minimal
additional routing logic
* Fixed a bug in the proxy's HPACK codec that could cause requests with very
large header values to hang indefinitely
* Web UI
* Removed the Authorities table and sidebar link from the dashboard to prepare
for a new, improved dashboard view communicating authority data
* Internal
* Modified the integration test for `linkerd upgrade` to test upgrading from
the latest stable release instead of the latest edge, to reflect the typical
use case
This stable release adds a number of proxy stability improvements.
To install this release, run: `curl https://run.linkerd.io/install | sh`
**Special thanks to**: @zaharidichev and @11Takanori!
**Full release notes**:
* Proxy
* Changed the proxy's routing behavior so that, when the control plane
does not resolve a destination, the proxy forwards the request with minimal
additional routing logic
* Fixed a bug in the proxy's HPACK codec that could cause requests with
very large header values to hang indefinitely
* Replaced the fixed reconnect backoff with an exponential one (thanks,
@zaharidichev!)
* Fixed an issue where requests could be held indefinitely by the load balancer
* Added a dispatch timeout that limits the amount of time a request can be
buffered in the proxy
* Removed the limit on the number of concurrently active service discovery
queries to the destination service
* Fixed an epoll notification issue that could cause excessive CPU usage
* Added the ability to disable tap by setting an env var (thanks,
@zaharidichev!)
* CLI
* Fixed `linkerd check` and `linkerd dashboard` failing when any control plane
pod is not ready, even when multiple replicas exist (as in HA mode)
* Controller
* Fixed control plane components failing on startup when the Kubernetes API
returns an `ErrGroupDiscoveryFailed`
* Proxy
* Added a dispatch timeout that limits the amount of time a request can be
buffered in the proxy
* Removed the limit on the number of concurrently active service discovery
queries to the Destination service
Special thanks to @zaharidichev for adding end to end tests for proxies with
TLS!
Signed-off-by: Eliza Weisman <eliza@buoyant.io>
* CLI
* Added a `linkerd check config` command for verifying that
`linkerd install config` was successful
* Improved the help documentation of `linkerd install` to clarify flag usage
* Added support for private Kubernetes clusters by changing the CLI to connect
to the control plane using a port-forward (thanks, @jackprice!)
* Controller
* Fixed pod creation failure when a `ResourceQuota` exists by adding a default
resource spec for the proxy-init init container
* Proxy
* Replaced the fixed reconnect backoff with an exponential one (thanks,
@zaharidichev!)
* Fixed an issue where load balancers can become stuck
* Internal
* Fixed integration tests by adding known proxy-injector log warning to tests
Signed-off-by: Alex Leong <alex@buoyant.io>
Kevin Leimkuhler
Zahari Dichev
Eliza Weisman
cpretzer
Alejandro Pedraza
Kevin Leimkuhler
Alex Leong
Ivan Sim
Carol A. Scott
Oliver Gould
Andrew Seigner
Dennis Adjei-Baah
Risha Mars
Andrew Seigner