diff --git a/.circleci/config.yml b/.circleci/config.yml
index e553a8bb868d..0ec13bb412dc 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -60,7 +60,7 @@ steps:
     name: notify-slack-failure
     when: on_fail
     command: |
-      if [[ $CIRCLE_BRANCH == "master" ]]; then
+      if [[ $CIRCLE_BRANCH == "main" ]]; then
         CIRCLE_ENDPOINT="https://app.circleci.com/pipelines/github/${CIRCLE_PROJECT_USERNAME}/${CIRCLE_PROJECT_REPONAME}?branch=${CIRCLE_BRANCH}"
         GITHUB_ENDPOINT="https://github.com/${CIRCLE_PROJECT_USERNAME}/${CIRCLE_PROJECT_REPONAME}/commit/${CIRCLE_SHA1}"
         COMMIT_MESSAGE=$(git log -1 --pretty=%B | head -n1)
@@ -79,7 +79,7 @@ steps:
         ] \
         }" "${FEED_CONSUL_GH_URL}"
       else
-        echo "Not posting slack failure notifications for non-master branch"
+        echo "Not posting slack failure notifications for non-main branch"
       fi
 
 commands:
@@ -386,7 +386,7 @@ jobs:
       <<: *ENVIRONMENT
     steps:
       - checkout
-      - attach_workspace: # this normally runs as the first job and has nothing to attach; only used in master branch after rebuilding UI
+      - attach_workspace: # this normally runs as the first job and has nothing to attach; only used in main branch after rebuilding UI
           at: .
       - run:
           command: make dev
@@ -486,7 +486,7 @@ jobs:
           path: *TEST_RESULTS_DIR
       - run: *notify-slack-failure
 
-  # run integration tests on nomad/master
+  # run integration tests on nomad/main
   nomad-integration-main:
     docker:
       - image: *GOLANG_IMAGE
@@ -648,7 +648,7 @@ jobs:
               short_sha=$(git rev-parse --short HEAD)
               git add agent/uiserver/bindata_assetfs.go
               git commit -m "auto-updated agent/uiserver/bindata_assetfs.go from commit ${short_sha}"
-              git push origin master
+              git push origin main
             else
               echo "no UI changes so no static assets to publish"
             fi
@@ -833,7 +833,7 @@ jobs:
           path: *TEST_RESULTS_DIR
       - run: *notify-slack-failure
 
-  # only runs on master: checks latest commit to see if the PR associated has a backport/* or docs* label to cherry-pick
+  # only runs on main: checks latest commit to see if the PR associated has a backport/* or docs* label to cherry-pick
   cherry-picker:
     docker:
       - image: docker.mirror.hashicorp.services/alpine:3.12
@@ -993,12 +993,12 @@ workflows:
             - check-vendor
       - build-amd64: *require-check-vendor
       - build-arm: *require-check-vendor
-      # every commit on master will have a rebuilt UI
+      # every commit on main will have a rebuilt UI
       - frontend-cache:
           filters:
             branches:
               only:
-                - master
+                - main
       - ember-build-prod:
           requires:
             - frontend-cache
@@ -1009,7 +1009,7 @@ workflows:
           filters:
             branches:
               only:
-                - master
+                - main
                 - /release\/\d+\.\d+\.x$/
           requires:
             - build-static-assets
@@ -1034,7 +1034,7 @@ workflows:
             branches:
               ignore:
                 - /^pull\/.*$/ # only push dev builds from non forks
-                - master # all master dev uploads will include a UI rebuild in build-distros
+                - main # all main dev uploads will include a UI rebuild in build-distros
       - dev-upload-docker:
           <<: *dev-upload
           context: consul-ci
@@ -1071,7 +1071,7 @@ workflows:
           filters:
             branches:
               only:
-                - master
+                - main
       - algolia-index:
           context: consul-docs
           filters:
@@ -1085,7 +1085,7 @@ workflows:
           filters:
             branches:
               only:
-                - master
+                - main
                 - /^ui\/.*/
       - workspace-tests:
           requires:
@@ -1118,14 +1118,14 @@ workflows:
           filters:
             branches:
               only:
-                - master
+                - main
                 - /release\/\d+\.\d+\.x$/
       - cherry-picker:
           context: team-consul
           filters:
             branches:
               only:
-                - master
+                - main
                 - /release\/\d+\.\d+\.x$/
   load-test:
     when: << pipeline.parameters.trigger-load-test >>
@@ -1139,6 +1139,6 @@ workflows:
           filters:
             branches:
               only:
-                - master
+                - main
     jobs:
       - load-test
diff --git a/.circleci/scripts/cherry-picker.sh b/.circleci/scripts/cherry-picker.sh
index 8a997ac4533e..a217e4a2bb52 100755
--- a/.circleci/scripts/cherry-picker.sh
+++ b/.circleci/scripts/cherry-picker.sh
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 #
-# This script is meant to run on every new commit to master in CircleCI. If the commit comes from a PR, it will
+# This script is meant to run on every new commit to main in CircleCI. If the commit comes from a PR, it will
 # check the PR associated with the commit for labels. If the label matches `docs*` it will be cherry-picked
 # to stable-website. If the label matches `backport/*`, it will be cherry-picked to the appropriate `release/*`
 # branch.
diff --git a/.github/CONTRIBUTING.md b/.github/CONTRIBUTING.md
index d3d98f8d3f06..8cc9ef66444b 100644
--- a/.github/CONTRIBUTING.md
+++ b/.github/CONTRIBUTING.md
@@ -60,7 +60,7 @@ issue. Stale issues will be closed.
 ## Building Consul
 
 If you wish to work on Consul itself, you'll first need [Go](https://golang.org)
-installed (The version of Go should match the one of our [CI config's](https://github.com/hashicorp/consul/blob/master/.circleci/config.yml) Go image).
+installed (The version of Go should match the one of our [CI config's](https://github.com/hashicorp/consul/blob/main/.circleci/config.yml) Go image).
 
 
 Next, clone this repository and then run `make dev`. In a few moments, you'll have a working
diff --git a/.github/workflows/changelog-checker.yml b/.github/workflows/changelog-checker.yml
index 16703030ab45..abeee801b682 100644
--- a/.github/workflows/changelog-checker.yml
+++ b/.github/workflows/changelog-checker.yml
@@ -4,9 +4,9 @@
 on:
   pull_request:
     types: [opened, synchronize, labeled]
-    # Runs on PRs to master and all release branches
+    # Runs on PRs to main and all release branches
     branches:
-      - master
+      - main
       - release/*
 
 jobs:
diff --git a/.github/workflows/load-test.yml b/.github/workflows/load-test.yml
index 9c6a113862a0..b603bf7e6cb6 100644
--- a/.github/workflows/load-test.yml
+++ b/.github/workflows/load-test.yml
@@ -1,7 +1,7 @@
 on:
   pull_request:
     branches:
-      - master
+      - main
     types: [labeled]
 
 jobs:
@@ -16,9 +16,9 @@ jobs:
       - name: Trigger CircleCI Load Test Pipeline
         run: |
           # build json payload to trigger CircleCI Load Test Pipeline
-          # This only runs the load test pipeline on the 'master' branch
+          # This only runs the load test pipeline on the 'main' branch
           jsonData=$(jq --null-input -r --arg commit ${{ github.event.pull_request.head.sha }} \
-            '{branch:"master", parameters: {"commit": $commit, "trigger-load-test": true}}')
+            '{branch:"main", parameters: {"commit": $commit, "trigger-load-test": true}}')
           echo "Passing JSON data to CircleCI API: $jsonData"
           load_test_pipeline_id=$(curl -X POST \
                -H "Circle-Token: ${{ secrets.CIRCLE_TOKEN }}" \
diff --git a/.github/workflows/website-checker.yml b/.github/workflows/website-checker.yml
index cde5031f0d71..505e7626bbfc 100644
--- a/.github/workflows/website-checker.yml
+++ b/.github/workflows/website-checker.yml
@@ -13,9 +13,9 @@
 on:
   pull_request_target:
     types: [opened]
-    # Runs on PRs to master and all release branches
+    # Runs on PRs to main and all release branches
     branches:
-      - master
+      - main
       - release/*
 
 jobs:
diff --git a/GNUmakefile b/GNUmakefile
index 7e714b24e0e4..891996b0fb20 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -176,7 +176,7 @@ ci.dev-docker:
 	@echo $(DOCKER_PASS) | docker login -u="$(DOCKER_USER)" --password-stdin
 	@echo "Pushing dev image to: https://cloud.docker.com/u/hashicorpdev/repository/docker/hashicorpdev/consul"
 	@docker push $(CI_DEV_DOCKER_NAMESPACE)/$(CI_DEV_DOCKER_IMAGE_NAME):$(GIT_COMMIT)
-ifeq ($(CIRCLE_BRANCH), master)
+ifeq ($(CIRCLE_BRANCH), main)
 	@docker tag $(CI_DEV_DOCKER_NAMESPACE)/$(CI_DEV_DOCKER_IMAGE_NAME):$(GIT_COMMIT) $(CI_DEV_DOCKER_NAMESPACE)/$(CI_DEV_DOCKER_IMAGE_NAME):latest
 	@docker push $(CI_DEV_DOCKER_NAMESPACE)/$(CI_DEV_DOCKER_IMAGE_NAME):latest
 endif
diff --git a/README.md b/README.md
index d70061d54123..2643901b8ccb 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# Consul [![CircleCI](https://circleci.com/gh/hashicorp/consul/tree/master.svg?style=svg)](https://circleci.com/gh/hashicorp/consul/tree/master) [![Discuss](https://img.shields.io/badge/discuss-consul-ca2171.svg?style=flat)](https://discuss.hashicorp.com/c/consul)
+# Consul [![CircleCI](https://circleci.com/gh/hashicorp/consul/tree/main.svg?style=svg)](https://circleci.com/gh/hashicorp/consul/tree/main) [![Discuss](https://img.shields.io/badge/discuss-consul-ca2171.svg?style=flat)](https://discuss.hashicorp.com/c/consul)
 
 * Website: https://www.consul.io
 * Tutorials: [HashiCorp Learn](https://learn.hashicorp.com/consul)
@@ -54,4 +54,4 @@ https://www.consul.io/docs
 
 ## Contributing
 
-Thank you for your interest in contributing! Please refer to [CONTRIBUTING.md](https://github.com/hashicorp/consul/blob/master/.github/CONTRIBUTING.md) for guidance.
+Thank you for your interest in contributing! Please refer to [CONTRIBUTING.md](https://github.com/hashicorp/consul/blob/main/.github/CONTRIBUTING.md) for guidance.
diff --git a/build-support/functions/10-util.sh b/build-support/functions/10-util.sh
index 59e714d5367e..9198e3bf1476 100644
--- a/build-support/functions/10-util.sh
+++ b/build-support/functions/10-util.sh
@@ -555,7 +555,7 @@ function git_push_ref {
       local upstream=$(git_upstream "${sdir}") || return 1
 
       # upstream branch for this branch does not track the remote we need to push to
-      # basically this checks that the upstream (could be something like origin/master) references the correct remote
+      # basically this checks that the upstream (could be something like origin/main) references the correct remote
       # if it doesn't then the string modification wont apply and the var will reamin unchanged and equal to itself.
       if test "${upstream#${remote}/}" == "${upstream}"
       then
diff --git a/command/connect/envoy/bootstrap_config.go b/command/connect/envoy/bootstrap_config.go
index 12a623b22b6d..b78f816677cf 100644
--- a/command/connect/envoy/bootstrap_config.go
+++ b/command/connect/envoy/bootstrap_config.go
@@ -86,7 +86,7 @@ type BootstrapConfig struct {
 	// configure the aspects that Connect relies upon to work. It's recommended
 	// that this only be used if necessary, and that it be based on the default
 	// template in
-	// https://github.com/hashicorp/consul/blob/master/command/connect/envoy/bootstrap_tpl.go
+	// https://github.com/hashicorp/consul/blob/main/command/connect/envoy/bootstrap_tpl.go
 	// for the correct version of Consul and Envoy being used.
 	OverrideJSONTpl string `mapstructure:"envoy_bootstrap_json_tpl"`
 
diff --git a/contributing/INTERNALS.md b/contributing/INTERNALS.md
index 38fd01aaf2c0..6d629134508e 100644
--- a/contributing/INTERNALS.md
+++ b/contributing/INTERNALS.md
@@ -22,13 +22,13 @@ The components in this section are shared between Consul agents in client and se
 
 | Directory | Contents |
 | --------- | -------- |
-| [command/agent](https://github.com/hashicorp/consul/tree/master/command/agent) | This contains the actual CLI command implementation for the `consul agent` command, which mostly just invokes an agent object from the `agent` package. |
-| [agent](https://github.com/hashicorp/consul/tree/master/agent) | This is where the agent object is defined, and the top level `agent` package has all of the functionality that's common to both client and server agents. This includes things like service registration, the HTTP and DNS endpoints, watches, and top-level glue for health checks. |
-| [agent/config](https://github.com/hashicorp/consul/tree/master/agent/config) | This has all the user-facing [configuration](https://www.consul.io/docs/agent/options.html) processing code, as well as the internal configuration structure that's used by the agent. |
-| [agent/checks](https://github.com/hashicorp/consul/tree/master/agent/checks) | This has implementations for the different [health check types](https://www.consul.io/docs/agent/checks.html). |
-| [agent/ae](https://github.com/hashicorp/consul/tree/master/agent/ae), [agent/local](https://github.com/hashicorp/consul/tree/master/agent/local) | These are used together to power the agent's [Anti-Entropy Sync Back](https://www.consul.io/docs/internals/anti-entropy.html) process to the Consul servers. |
-| [agent/router](https://github.com/hashicorp/consul/tree/master/agent/router), [agent/pool](https://github.com/hashicorp/consul/tree/master/agent/pool) | These are used for routing RPC queries to Consul servers and for connection pooling. |
-| [agent/structs](https://github.com/hashicorp/consul/tree/master/agent/structs) | This has definitions of all the internal RPC protocol request and response structures. |
+| [command/agent](https://github.com/hashicorp/consul/tree/main/command/agent) | This contains the actual CLI command implementation for the `consul agent` command, which mostly just invokes an agent object from the `agent` package. |
+| [agent](https://github.com/hashicorp/consul/tree/main/agent) | This is where the agent object is defined, and the top level `agent` package has all of the functionality that's common to both client and server agents. This includes things like service registration, the HTTP and DNS endpoints, watches, and top-level glue for health checks. |
+| [agent/config](https://github.com/hashicorp/consul/tree/main/agent/config) | This has all the user-facing [configuration](https://www.consul.io/docs/agent/options.html) processing code, as well as the internal configuration structure that's used by the agent. |
+| [agent/checks](https://github.com/hashicorp/consul/tree/main/agent/checks) | This has implementations for the different [health check types](https://www.consul.io/docs/agent/checks.html). |
+| [agent/ae](https://github.com/hashicorp/consul/tree/main/agent/ae), [agent/local](https://github.com/hashicorp/consul/tree/main/agent/local) | These are used together to power the agent's [Anti-Entropy Sync Back](https://www.consul.io/docs/internals/anti-entropy.html) process to the Consul servers. |
+| [agent/router](https://github.com/hashicorp/consul/tree/main/agent/router), [agent/pool](https://github.com/hashicorp/consul/tree/main/agent/pool) | These are used for routing RPC queries to Consul servers and for connection pooling. |
+| [agent/structs](https://github.com/hashicorp/consul/tree/main/agent/structs) | This has definitions of all the internal RPC protocol request and response structures. |
 
 ### Server Components
 
@@ -36,9 +36,9 @@ The components in this section are only used by Consul servers.
 
 | Directory | Contents |
 | --------- | -------- |
-| [agent/consul](https://github.com/hashicorp/consul/tree/master/agent/consul) | This is where the Consul server object is defined, and the top-level `consul` package has all of the functionality that's used by server agents. This includes things like the internal RPC endpoints. |
-| [agent/consul/fsm](https://github.com/hashicorp/consul/tree/master/agent/consul/fsm), [agent/consul/state](https://github.com/hashicorp/consul/tree/master/agent/consul/state) | These components make up Consul's finite state machine (updated by the Raft consensus algorithm) and backed by the state store (based on immutable radix trees). All updates of Consul's consistent state is handled by the finite state machine, and all read queries to the Consul servers are serviced by the state store's data structures. |
-| [agent/consul/autopilot](https://github.com/hashicorp/consul/tree/master/agent/consul/autopilot) | This contains a package of functions that provide Consul's [Autopilot](https://www.consul.io/docs/guides/autopilot.html) features. |
+| [agent/consul](https://github.com/hashicorp/consul/tree/main/agent/consul) | This is where the Consul server object is defined, and the top-level `consul` package has all of the functionality that's used by server agents. This includes things like the internal RPC endpoints. |
+| [agent/consul/fsm](https://github.com/hashicorp/consul/tree/main/agent/consul/fsm), [agent/consul/state](https://github.com/hashicorp/consul/tree/main/agent/consul/state) | These components make up Consul's finite state machine (updated by the Raft consensus algorithm) and backed by the state store (based on immutable radix trees). All updates of Consul's consistent state is handled by the finite state machine, and all read queries to the Consul servers are serviced by the state store's data structures. |
+| [agent/consul/autopilot](https://github.com/hashicorp/consul/tree/main/agent/consul/autopilot) | This contains a package of functions that provide Consul's [Autopilot](https://www.consul.io/docs/guides/autopilot.html) features. |
 
 ### Other Components
 
@@ -46,12 +46,12 @@ There are several other top-level packages used internally by Consul as well as
 
 | Directory | Contents |
 | --------- | -------- |
-| [acl](https://github.com/hashicorp/consul/tree/master/api) | This supports the underlying policy engine for Consul's [ACL](https://www.consul.io/docs/guides/acl.html) system. |
-| [api](https://github.com/hashicorp/consul/tree/master/api) | This `api` package provides an official Go API client for Consul, which is also used by Consul's [CLI](https://www.consul.io/docs/commands/index.html) commands to communicate with the local Consul agent. |
-| [command](https://github.com/hashicorp/consul/tree/master/command) | This contains a sub-package for each of Consul's [CLI](https://www.consul.io/docs/commands/index.html) command implementations. |
-| [snapshot](https://github.com/hashicorp/consul/tree/master/snapshot) | This has implementation details for Consul's [snapshot archives](https://www.consul.io/api/snapshot.html). |
-| [api/watch](https://github.com/hashicorp/consul/tree/master/api/watch) | This has implementation details for Consul's [watches](https://www.consul.io/docs/agent/watches.html), used both internally to Consul and by the [watch CLI command](https://www.consul.io/docs/commands/watch.html). |
-| [website](https://github.com/hashicorp/consul/tree/master/website) | This has the full source code for [consul.io](https://www.consul.io/). Pull requests can update the source code and Consul's documentation all together. |
+| [acl](https://github.com/hashicorp/consul/tree/main/api) | This supports the underlying policy engine for Consul's [ACL](https://www.consul.io/docs/guides/acl.html) system. |
+| [api](https://github.com/hashicorp/consul/tree/main/api) | This `api` package provides an official Go API client for Consul, which is also used by Consul's [CLI](https://www.consul.io/docs/commands/index.html) commands to communicate with the local Consul agent. |
+| [command](https://github.com/hashicorp/consul/tree/main/command) | This contains a sub-package for each of Consul's [CLI](https://www.consul.io/docs/commands/index.html) command implementations. |
+| [snapshot](https://github.com/hashicorp/consul/tree/main/snapshot) | This has implementation details for Consul's [snapshot archives](https://www.consul.io/api/snapshot.html). |
+| [api/watch](https://github.com/hashicorp/consul/tree/main/api/watch) | This has implementation details for Consul's [watches](https://www.consul.io/docs/agent/watches.html), used both internally to Consul and by the [watch CLI command](https://www.consul.io/docs/commands/watch.html). |
+| [website](https://github.com/hashicorp/consul/tree/main/website) | This has the full source code for [consul.io](https://www.consul.io/). Pull requests can update the source code and Consul's documentation all together. |
 
 ## FAQ
 
diff --git a/contributing/streaming/README.md b/contributing/streaming/README.md
index ef56bcc0aef4..121b72851c80 100644
--- a/contributing/streaming/README.md
+++ b/contributing/streaming/README.md
@@ -31,12 +31,12 @@ endpoint calls raft.Apply, which if successful will save the new data in the sta
 When the [state.Store commits] it produces an event which is managed by the [EventPublisher]
 and sent to any active subscriptions.
 
-[rpcclient/health.Health]: https://github.com/hashicorp/consul/blob/master/agent/rpcclient/health/health.go
-[StreamingHealthServices cache-type]: https://github.com/hashicorp/consul/blob/master/agent/cache-types/streaming_health_services.go
-[materialized view]: https://github.com/hashicorp/consul/blob/master/agent/submatview/materializer.go
-[SubscribeEndpoint]: https://github.com/hashicorp/consul/blob/master/agent/rpc/subscribe/subscribe.go
-[EventPublisher]: https://github.com/hashicorp/consul/blob/master/agent/consul/stream/event_publisher.go
-[state.Store commits]: https://github.com/hashicorp/consul/blob/master/agent/consul/state/memdb.go
+[rpcclient/health.Health]: https://github.com/hashicorp/consul/blob/main/agent/rpcclient/health/health.go
+[StreamingHealthServices cache-type]: https://github.com/hashicorp/consul/blob/main/agent/cache-types/streaming_health_services.go
+[materialized view]: https://github.com/hashicorp/consul/blob/main/agent/submatview/materializer.go
+[SubscribeEndpoint]: https://github.com/hashicorp/consul/blob/main/agent/rpc/subscribe/subscribe.go
+[EventPublisher]: https://github.com/hashicorp/consul/blob/main/agent/consul/stream/event_publisher.go
+[state.Store commits]: https://github.com/hashicorp/consul/blob/main/agent/consul/state/memdb.go
 
 
 ## Event Publisher
diff --git a/website/content/api-docs/libraries-and-sdks.mdx b/website/content/api-docs/libraries-and-sdks.mdx
index 781c404a69c1..895643665770 100644
--- a/website/content/api-docs/libraries-and-sdks.mdx
+++ b/website/content/api-docs/libraries-and-sdks.mdx
@@ -15,7 +15,7 @@ the community.
 
 <ul>
   <li>
-    <a href="/hashicorp/consul/tree/master/api">api</a> -
+    <a href="/hashicorp/consul/tree/main/api">api</a> -
     Official Go client for the Consul HTTP API
   </li>
   <li>
diff --git a/website/content/docs/connect/observability/ui-visualization.mdx b/website/content/docs/connect/observability/ui-visualization.mdx
index 2c66527bc7b8..4493f6d1386c 100644
--- a/website/content/docs/connect/observability/ui-visualization.mdx
+++ b/website/content/docs/connect/observability/ui-visualization.mdx
@@ -440,7 +440,7 @@ The template for a complete provider JavaScript file is given below.
 ```
 
 Additionally, the built in [Prometheus
-provider code](https://github.com/hashicorp/consul/blob/master/ui/packages/consul-ui/vendor/metrics-providers/prometheus.js)
+provider code](https://github.com/hashicorp/consul/blob/main/ui/packages/consul-ui/vendor/metrics-providers/prometheus.js)
 can be used as a reference.
 
 ### Configuring the Agent With a Custom Metrics Provider.
diff --git a/website/content/docs/connect/proxies/integrate.mdx b/website/content/docs/connect/proxies/integrate.mdx
index e9b9b8af6ee8..8b6d7e71070d 100644
--- a/website/content/docs/connect/proxies/integrate.mdx
+++ b/website/content/docs/connect/proxies/integrate.mdx
@@ -234,7 +234,7 @@ ID for the name specified in `-sidecar-for`.
 [`/v1/agent/connect/ca/leaf/`]: /api/agent/connect#service-leaf-certificate
 [`/v1/agent/connect/ca/roots`]: /api/agent/connect#certificate-authority-ca-roots
 [`/v1/health/connect/:service_id`]: /api/health#list-nodes-for-connect-capable-service
-[`api` package]: https://github.com/hashicorp/consul/tree/master/api
+[`api` package]: https://github.com/hashicorp/consul/tree/main/api
 [`consul/connect/proxy/config.go`]: https://github.com/hashicorp/consul/blob/v1.8.3/connect/proxy/config.go#L187
 [`consul/connect/tls.go`]: https://github.com/hashicorp/consul/blob/v1.8.3/connect/tls.go#L232-L237
 [discovery chain]: /docs/connect/l7-traffic/discovery-chain
diff --git a/website/content/docs/install/ports.mdx b/website/content/docs/install/ports.mdx
index 9ed1f50ec170..a9763327cae4 100644
--- a/website/content/docs/install/ports.mdx
+++ b/website/content/docs/install/ports.mdx
@@ -50,7 +50,7 @@ Required by all agents.
 **Serf WAN** This is used by servers to gossip over the WAN, to
 other servers. As of Consul 0.8 the WAN join flooding feature requires
 the Serf WAN port (TCP/UDP) to be listening on both WAN and LAN interfaces. See also:
-[Consul 0.8.0 CHANGELOG](https://github.com/hashicorp/consul/blob/master/CHANGELOG.md#080-april-5-2017) and [GH-3058](https://github.com/hashicorp/consul/issues/3058)
+[Consul 0.8.0 CHANGELOG](https://github.com/hashicorp/consul/blob/main/CHANGELOG.md#080-april-5-2017) and [GH-3058](https://github.com/hashicorp/consul/issues/3058)
 
 **Server RPC** This is used by servers to handle incoming
 requests from other agents.
diff --git a/website/content/docs/k8s/upgrade/index.mdx b/website/content/docs/k8s/upgrade/index.mdx
index c89255826ce4..e500ef7dfbc9 100644
--- a/website/content/docs/k8s/upgrade/index.mdx
+++ b/website/content/docs/k8s/upgrade/index.mdx
@@ -113,7 +113,7 @@ to update to the new version.
 
 1. Ensure you've read the [Upgrading Consul](/docs/upgrading) documentation.
 1. Ensure you've read any [specific instructions](/docs/upgrading/upgrade-specific) for the version you're upgrading
-   to and the Consul [changelog](https://github.com/hashicorp/consul/blob/master/CHANGELOG.md) for that version.
+   to and the Consul [changelog](https://github.com/hashicorp/consul/blob/main/CHANGELOG.md) for that version.
 1. Read our [Compatibility Matrix](/docs/k8s/upgrade/compatibility) to ensure
    your current Helm chart version supports this Consul version. If it does not,
    you may need to also upgrade your Helm chart version at the same time.
diff --git a/website/content/docs/release-notes/1-9-0.mdx b/website/content/docs/release-notes/1-9-0.mdx
index 9ea1c9ef149d..16ae6271d9ef 100644
--- a/website/content/docs/release-notes/1-9-0.mdx
+++ b/website/content/docs/release-notes/1-9-0.mdx
@@ -29,4 +29,4 @@ page_title: 1.9.0
 - Drops support for Envoy versions 1.12.0, 1.12.1, 1.12.2, and 1.13.0
 - Switches the default gateway port from 443 to 8443 to avoid assumption of Envoy running as root.
 
-For more detailed information, please refer to the [changelog](https://github.com/hashicorp/consul/blob/master/CHANGELOG.md#190-november-24-2020).
+For more detailed information, please refer to the [changelog](https://github.com/hashicorp/consul/blob/main/CHANGELOG.md#190-november-24-2020).
diff --git a/website/content/docs/security/acl/acl-legacy.mdx b/website/content/docs/security/acl/acl-legacy.mdx
index 122ead9f9875..ff7645bc3929 100644
--- a/website/content/docs/security/acl/acl-legacy.mdx
+++ b/website/content/docs/security/acl/acl-legacy.mdx
@@ -950,7 +950,7 @@ here, with examples:
   way to define more specific policies. Clients can list or read queries for
   which they have "read" access based on their prefix, and similar they can
   update any queries for which they have "write" access. An example use for
-  this type is a query with a well-known name (eg. `prod-master-customer-db`)
+  this type is a query with a well-known name (eg. `prod-primary-customer-db`)
   that is used and known by many clients to provide geo-failover behavior for
   a database.
 
diff --git a/website/content/docs/security/acl/acl-rules.mdx b/website/content/docs/security/acl/acl-rules.mdx
index 1dca5ec4e00e..48213406623d 100644
--- a/website/content/docs/security/acl/acl-rules.mdx
+++ b/website/content/docs/security/acl/acl-rules.mdx
@@ -408,7 +408,7 @@ here, with examples:
   access that query name. Clients can list or read queries for
   which they have "read" access based on their prefix, and similar they can
   update any queries for which they have "write" access. An example use for
-  this type is a query with a well-known name (eg. `prod-master-customer-db`)
+  this type is a query with a well-known name (eg. `prod-primary-customer-db`)
   that is used and known by many clients to provide geo-failover behavior for
   a database.
 
diff --git a/website/content/docs/security/acl/auth-methods/oidc.mdx b/website/content/docs/security/acl/auth-methods/oidc.mdx
index ac749f95de53..302be8081bbb 100644
--- a/website/content/docs/security/acl/auth-methods/oidc.mdx
+++ b/website/content/docs/security/acl/auth-methods/oidc.mdx
@@ -72,7 +72,7 @@ parameters are required to properly configure an auth method of type
 
 - `JWTSupportedAlgs` `(array<string>)` - JWTSupportedAlgs is a list of
   supported signing algorithms. Defaults to `RS256`. ([Available
-  algorithms](https://github.com/hashicorp/consul/blob/master/vendor/github.com/coreos/go-oidc/jose.go#L7))
+  algorithms](https://github.com/hashicorp/consul/blob/main/vendor/github.com/coreos/go-oidc/jose.go#L7))
 
 - `BoundAudiences` `(array<string>)` - List of `aud` claims that are valid for
   login; any match is sufficient.
diff --git a/website/content/docs/upgrading/instructions/upgrade-to-1-2-x.mdx b/website/content/docs/upgrading/instructions/upgrade-to-1-2-x.mdx
index b39a4d9894f3..3a80c5f34874 100644
--- a/website/content/docs/upgrading/instructions/upgrade-to-1-2-x.mdx
+++ b/website/content/docs/upgrading/instructions/upgrade-to-1-2-x.mdx
@@ -40,7 +40,7 @@ This guide makes the following assumptions:
 
 There are not too many major changes that might cause issues upgrading from 1.0.8, but notable changes
 are called out in our [Specific Version Details](/docs/upgrading/upgrade-specific#consul-1-1-0)
-page. You can find more granular details in the full [changelog](https://github.com/hashicorp/consul/blob/master/CHANGELOG.md#124-november-27-2018).
+page. You can find more granular details in the full [changelog](https://github.com/hashicorp/consul/blob/main/CHANGELOG.md#124-november-27-2018).
 Looking through these changes prior to upgrading is highly recommended.
 
 ## Procedure
diff --git a/website/content/docs/upgrading/instructions/upgrade-to-1-6-x.mdx b/website/content/docs/upgrading/instructions/upgrade-to-1-6-x.mdx
index d600adbb7037..1d451c2988db 100644
--- a/website/content/docs/upgrading/instructions/upgrade-to-1-6-x.mdx
+++ b/website/content/docs/upgrading/instructions/upgrade-to-1-6-x.mdx
@@ -45,7 +45,7 @@ This guide makes the following assumptions:
 
 There are quite a number of changes between releases. Notable changes
 are called out in our [Specific Version Details](/docs/upgrading/upgrade-specific#consul-1-6-3)
-page. You can find more granular details in the full [changelog](https://github.com/hashicorp/consul/blob/master/CHANGELOG.md#124-november-27-2018).
+page. You can find more granular details in the full [changelog](https://github.com/hashicorp/consul/blob/main/CHANGELOG.md#124-november-27-2018).
 Looking through these changes prior to upgrading is highly recommended.
 
 Two very notable items are:
diff --git a/website/content/docs/upgrading/instructions/upgrade-to-1-8-x.mdx b/website/content/docs/upgrading/instructions/upgrade-to-1-8-x.mdx
index 6a685b8de9d1..654ceb08fd9a 100644
--- a/website/content/docs/upgrading/instructions/upgrade-to-1-8-x.mdx
+++ b/website/content/docs/upgrading/instructions/upgrade-to-1-8-x.mdx
@@ -33,7 +33,7 @@ This guides makes the following assumptions:
 
 There are not too many major changes that might cause issues upgrading from 1.6.9, but notable changes
 are called out in our [Specific Version Details](/docs/upgrading/upgrade-specific#consul-1-8-0)
-page. You can find more granular details in the full [changelog](https://github.com/hashicorp/consul/blob/master/CHANGELOG.md#183-august-12-2020).
+page. You can find more granular details in the full [changelog](https://github.com/hashicorp/consul/blob/main/CHANGELOG.md#183-august-12-2020).
 Looking through these changes prior to upgrading is highly recommended.
 
 ## Procedure
diff --git a/website/content/docs/upgrading/upgrade-specific.mdx b/website/content/docs/upgrading/upgrade-specific.mdx
index fc4fe34af97b..e2f5b946f1ea 100644
--- a/website/content/docs/upgrading/upgrade-specific.mdx
+++ b/website/content/docs/upgrading/upgrade-specific.mdx
@@ -542,12 +542,12 @@ upgrading. Here's the complete list of removed options and their equivalents:
 | `dogstatsd_tags`                                       | [`telemetry.dogstatsd_tags`](/docs/agent/options#telemetry-dogstatsd_tags)                                                                                             |
 | `http_api_response_headers`                            | [`http_config.response_headers`](/docs/agent/options#response_headers)                                                                                                 |
 | `ports.rpc`                                            | None, the RPC server for CLI commands is no longer supported.                                                                                                          |
-| `recursor`                                             | [`recursors`](https://github.com/hashicorp/consul/blob/master/website/pages/docs/agent/options.mdx#recursors)                                                          |
+| `recursor`                                             | [`recursors`](https://github.com/hashicorp/consul/blob/main/website/pages/docs/agent/options.mdx#recursors)                                                          |
 | `retry_join_azure`                                     | [`-retry-join`](/docs/agent/options#_retry_join)                                                                                                                       |
 | `retry_join_ec2`                                       | [`-retry-join`](/docs/agent/options#_retry_join)                                                                                                                       |
 | `retry_join_gce`                                       | [`-retry-join`](/docs/agent/options#_retry_join)                                                                                                                       |
-| `statsd_addr`                                          | [`telemetry.statsd_address`](https://github.com/hashicorp/consul/blob/master/website/pages/docs/agent/options.mdx#telemetry-statsd_address)                            |
-| `statsite_addr`                                        | [`telemetry.statsite_address`](https://github.com/hashicorp/consul/blob/master/website/pages/docs/agent/options.mdx#telemetry-statsite_address)                        |
+| `statsd_addr`                                          | [`telemetry.statsd_address`](https://github.com/hashicorp/consul/blob/main/website/pages/docs/agent/options.mdx#telemetry-statsd_address)                            |
+| `statsite_addr`                                        | [`telemetry.statsite_address`](https://github.com/hashicorp/consul/blob/main/website/pages/docs/agent/options.mdx#telemetry-statsite_address)                        |
 | `statsite_prefix`                                      | [`telemetry.metrics_prefix`](/docs/agent/options#telemetry-metrics_prefix)                                                                                             |
 | `telemetry.statsite_prefix`                            | [`telemetry.metrics_prefix`](/docs/agent/options#telemetry-metrics_prefix)                                                                                             |
 | (service definitions) `serviceid`                      | [`service_id`](/docs/agent/services)                                                                                                                                   |
diff --git a/website/pages/api-docs/[[...page]].jsx b/website/pages/api-docs/[[...page]].jsx
index cf88766c421f..1f40bb82f837 100644
--- a/website/pages/api-docs/[[...page]].jsx
+++ b/website/pages/api-docs/[[...page]].jsx
@@ -10,7 +10,7 @@ import {
 const baseRoute = 'api-docs'
 const navDataFile = `data/${baseRoute}-nav-data.json`
 const localContentDir = `content/${baseRoute}`
-const mainBranch = 'master'
+const mainBranch = 'main'
 const product = { name: productName, slug: productSlug }
 
 export default function ApiDocsLayout(props) {
diff --git a/website/pages/commands/[[...page]].jsx b/website/pages/commands/[[...page]].jsx
index 7abdd2edafd8..e76ccb37197d 100644
--- a/website/pages/commands/[[...page]].jsx
+++ b/website/pages/commands/[[...page]].jsx
@@ -10,7 +10,7 @@ import {
 const baseRoute = 'commands'
 const navDataFile = `data/${baseRoute}-nav-data.json`
 const localContentDir = `content/${baseRoute}`
-const mainBranch = 'master'
+const mainBranch = 'main'
 const product = { name: productName, slug: productSlug }
 
 export default function CommandsLayout(props) {
diff --git a/website/pages/docs/[[...page]].jsx b/website/pages/docs/[[...page]].jsx
index 1547d345da64..2976490a9f3f 100644
--- a/website/pages/docs/[[...page]].jsx
+++ b/website/pages/docs/[[...page]].jsx
@@ -12,7 +12,7 @@ const additionalComponents = { ConfigEntryReference }
 const baseRoute = 'docs'
 const navDataFile = `data/${baseRoute}-nav-data.json`
 const localContentDir = `content/${baseRoute}`
-const mainBranch = 'master'
+const mainBranch = 'main'
 const product = { name: productName, slug: productSlug }
 
 export default function DocsLayout(props) {