* website: Update middleman-hashicorp container and Gemfile.lock
Time marches on, and so do security vulnerabilities in Nokogiri. So it's time
for a new container.
As with last time, here's a reminder for the next person who needs to update
this:
- You shouldn't just update the dependency in Gemfile.lock, because your build
times will go to heck as you compile Nokogiri from source on every run. So you
need an updated container with all the dependencies.
- To update the container, you need to push a new tag to the middleman-hashicorp
repo. Teamcity does the rest, and will ship a new container to Docker Hub
(unless its credentials are out of date, in which case go ask team-eng-serv.)
- Once that's pushed:
- Update Makefile
- Update the Gemfile
- Delete Gemfile.lock
- `make website` until it comes up, then ctrl-C
- Commit the changes
* website: Specify a different json version in Gemfile.lock
The Consul website uses different containers for preview and deploy, and this
oddball JSON version was causing issues. This commit sacrifices a little bit
of preview startup speed for (hopefully) working deploys.
- Bootstrap escape hatches are OK.
- Public listener/cluster escape hatches are OK.
- Upstream listener/cluster escape hatches are not supported.
If an unsupported escape hatch is configured and the discovery chain is
activated log a warning and act like it was not configured.
Fixes#6160
* website: update the vs. envoy and proxies page
This is the second result on Google for "consul envoy" and
it seemed like it needed a bit of an upgrade to help clarify the
current state.
* Update website/source/intro/vs/proxies.html.md
Co-Authored-By: Judith Malnick <judith.patudith@gmail.com>
* Update website/source/intro/vs/proxies.html.md
Co-Authored-By: Judith Malnick <judith.patudith@gmail.com>
* Update website/source/intro/vs/proxies.html.md
Co-Authored-By: Judith Malnick <judith.patudith@gmail.com>
* Update website/source/intro/vs/proxies.html.md
Co-Authored-By: Judith Malnick <judith.patudith@gmail.com>
* Apply suggestions from code review
Co-Authored-By: Judith Malnick <judith.patudith@gmail.com>
Add parameter local-only to operator keyring list requests to force queries to only hit local servers (no WAN traffic).
HTTP API: GET /operator/keyring?local-only=true
CLI: consul keyring -list --local-only
Sending the local-only flag with any non-GET/list request will result in an error.
The main change is that we no longer filter service instances by health,
preferring instead to render all results down into EDS endpoints in
envoy and merely label the endpoints as HEALTHY or UNHEALTHY.
When OnlyPassing is set to true we will force consul checks in a
'warning' state to render as UNHEALTHY in envoy.
Fixes#6171
* Update go-bexpr to v0.1.1
This brings in:
• `in`/`not in` operators to do substring matching
• `matches` / `not matches` operators to perform regex string matching.
* Add the capability to auto-generate the filtering selector ops tables for our docs
This fixes pathological cases where the write throughput and snapshot size are both so large that more than 10k log entries are written in the time it takes to restore the snapshot from disk. In this case followers that restart can never catch up with leader replication again and enter a loop of constantly downloading a full snapshot and restoring it only to find that snapshot is already out of date and the leader has truncated its logs so a new snapshot is sent etc.
In general if you need to adjust this, you are probably abusing Consul for purposes outside its design envelope and should reconsider your usage to reduce data size and/or write volume.
* Bad link in encryption docs
* clarifying the guide link
* Update website/source/docs/agent/encryption.html.md
Co-Authored-By: kaitlincarter-hc <43049322+kaitlincarter-hc@users.noreply.github.com>
* Update website/source/docs/agent/encryption.html.md
Co-Authored-By: kaitlincarter-hc <43049322+kaitlincarter-hc@users.noreply.github.com>
* add connect gateway guide
* Remove stray space
Co-Authored-By: Freddy <freddygv@users.noreply.github.com>
* Specify stanza and exact options
Co-Authored-By: Freddy <freddygv@users.noreply.github.com>
* incorporate comments from freddy
* integrate feedback from matt
* make snippets all json
* incorporate more comments from matt
* added links
* incorporate comments from neena on google doc draft
* make learn lnks relative
* clarify that gateways are new
* change socat to netcat
* add more description about replication token permissions
* Apply suggestions from code review
Co-Authored-By: Matt Keeler <mkeeler@users.noreply.github.com>
* add the prerequisite to enable centralized service config
* finish adding docs links
* website: link to 1.6.0 beta in downloads page
* website: reorganize intention replication/ca federation
* website: remove announcement bar
* Update website/source/docs/connect/connect-internals.html.md
Co-Authored-By: Paul Banks <banks@banksco.de>
* website: update homepage and service mesh page
Aligning messaging to current product.
* website: fix link TODOs
* Add Mesh Gateway to mesh page, update use case wording
* connect: allow overriding envoy listener bind_address
* Update agent/xds/config.go
Co-Authored-By: Kyle Havlovitz <kylehav@gmail.com>
* connect: allow overriding envoy listener bind_port
* envoy: support unix sockets for grpc in bootstrap
Add AgentSocket BootstrapTplArgs which if set overrides the AgentAddress
and AgentPort to generate a bootstrap which points Envoy to a unix
socket file instead of an ip:port.
* Add a test for passing the consul addr as a unix socket
* Fix config formatting for envoy bootstrap tests
* Fix listeners test cases for bind addr/port
* Update website/source/docs/connect/proxies/envoy.md
* Add ui-content-path flag
* tests complete, regex validator on string, index.html updated
* cleaning up debugging stuff
* ui: Enable ember environment configuration to be set via the go binary at runtime (#5934)
* ui: Only inject {{.ContentPath}} if we are makeing a prod build...
...otherwise we just use the current rootURL
This gets injected into a <base /> node which solves the assets path
problem but not the ember problem
* ui: Pull out the <base href=""> value and inject it into ember env
See previous commit:
The <base href=""> value is 'sometimes' injected from go at index
serve time. We pass this value down to ember by overwriting the ember
config that is injected via a <meta> tag. This has to be done before
ember bootup.
Sometimes (during testing and development, basically not production)
this is injected with the already existing value, in which case this
essentially changes nothing.
The code here is slightly abstracted away from our specific usage to
make it easier for anyone else to use, and also make sure we can cope
with using this same method to pass variables down from the CLI through
to ember in the future.
* ui: We can't use <base /> move everything to javascript (#5941)
Unfortuantely we can't seem to be able to use <base> and rootURL
together as URL paths will get doubled up (`ui/ui/`).
This moves all the things that we need to interpolate with .ContentPath
to the `startup` javascript so we can conditionally print out
`{{.ContentPath}}` in lots of places (now we can't use base)
* fixed when we serve index.html
* ui: For writing a ContentPath, we also need to cope with testing... (#5945)
...and potentially more environments
Testing has more additional things in a separate index.html in `tests/`
This make the entire thing a little saner and uses just javascriopt
template literals instead of a pseudo handbrake synatx for our
templating of these files.
Intead of just templating the entire file this way, we still only
template `{{content-for 'head'}}` and `{{content-for 'body'}}`
in this way to ensure we support other plugins/addons
* build: Loosen up the regex for retrieving the CONSUL_VERSION (#5946)
* build: Loosen up the regex for retrieving the CONSUL_VERSION
1. Previously the `sed` replacement was searching for the CONSUL_VERSION
comment at the start of a line, it no longer does this to allow for
indentation.
2. Both `grep` and `sed` where looking for the omment at the end of the
line. We've removed this restriction here. We don't need to remove it
right now, but if we ever put the comment followed by something here the
searching would break.
3. Added `xargs` for trimming the resulting version string. We aren't
using this already in the rest of the scripts, but we are pretty sure
this is available on most systems.
* ui: Fix erroneous variable, and also force an ember cache clean on build
1. We referenced a variable incorrectly here, this fixes that.
2. We also made sure that every `make` target clears ember's `tmp` cache
to ensure that its not using any caches that have since been edited
everytime we call a `make` target.
* added docs, fixed encoding
* fixed go fmt
* Update agent/config/config.go
Co-Authored-By: R.B. Boyer <public@richardboyer.net>
* Completed Suggestions
* run gofmt on http.go
* fix testsanitize
* fix fullconfig/hcl by setting correct 'want'
* ran gofmt on agent/config/runtime_test.go
* Update website/source/docs/agent/options.html.md
Co-Authored-By: Hans Hasselberg <me@hans.io>
* Update website/source/docs/agent/options.html.md
Co-Authored-By: kaitlincarter-hc <43049322+kaitlincarter-hc@users.noreply.github.com>
* remove contentpath from redirectFS struct
* Support for maximum size for Output of checks
This PR allows users to limit the size of output produced by checks at the agent
and check level.
When set at the agent level, it will limit the output for all checks monitored
by the agent.
When set at the check level, it can override the agent max for a specific check but
only if it is lower than the agent max.
Default value is 4k, and input must be at least 1.
* Moved the glossary to a new page and removed the advanced warnings from all internals docs.
* Update website/source/layouts/docs.erb
Co-Authored-By: Judith Malnick <judith@hashicorp.com>
* Updates based on PR feedback
* Update website/source/docs/internals/index.html.md
* Update website/source/docs/internals/index.html.md
* Update website/source/docs/internals/index.html.md
* Update website/source/docs/internals/index.html.md
* Update website/source/docs/internals/index.html.md
* Upating the term node to be more clear
* Update website/source/docs/internals/architecture.html.md
* Update website/source/docs/internals/architecture.html.md
Co-Authored-By: Paul Banks <banks@banksco.de>
* Addressing the failure detection comment
This allows addresses to be tagged at the service level similar to what we allow for nodes already. The address translation that can be enabled with the `translate_wan_addrs` config was updated to take these new addresses into account as well.
* clarify possibilities for centralized proxy configuration
* add line breaks to config entries file
* add info about centralized config to built in proxy doc
* mondify connect landing page to help with navigation
* move internals details to its own page
* link fixes and shortening text on main page
* put built-in proxy options on its own page
* add configuration details for connect
* clarify security title and add observability page
* reorganize menu
* remove observability from configuration section
* Update website/source/docs/connect/configuration.html.md
Co-Authored-By: Paul Banks <banks@banksco.de>
* Update website/source/docs/connect/index.html.md
Co-Authored-By: Paul Banks <banks@banksco.de>
* Update website/source/docs/agent/config_entries.html.md
Co-Authored-By: Paul Banks <banks@banksco.de>
* Update website/source/docs/connect/configuration.html.md
Co-Authored-By: Paul Banks <banks@banksco.de>
* rename connect section to include service mesh
* reorganize sections per suggestions from paul
* add configuration edits from paul
* add internals edits from paul
* add observability edits from paul
* reorganize pages and menu
* Update website/source/docs/connect/configuration.html.md
Co-Authored-By: Paul Banks <banks@banksco.de>
* menu corrections and edits
* incorporate some of pauls comments
* incorporate more of pauls comments
* Update website/source/docs/connect/configuration.html.md
Co-Authored-By: kaitlincarter-hc <43049322+kaitlincarter-hc@users.noreply.github.com>
* Update website/source/docs/connect/index.html.md
Co-Authored-By: kaitlincarter-hc <43049322+kaitlincarter-hc@users.noreply.github.com>
* Update website/source/docs/connect/index.html.md
Co-Authored-By: kaitlincarter-hc <43049322+kaitlincarter-hc@users.noreply.github.com>
* Update website/source/docs/connect/registration.html.md
Co-Authored-By: kaitlincarter-hc <43049322+kaitlincarter-hc@users.noreply.github.com>
* incorporate kaitlin and pavanni feedback
* add redirect
* fix conflicts in index file
* Resolve conflicts in index file
* correct links for new organization
* Update website/source/docs/connect/proxies.html.md
Co-Authored-By: Paul Banks <banks@banksco.de>
* Update website/source/docs/connect/registration.html.md
Co-Authored-By: Paul Banks <banks@banksco.de>
* Update website/source/docs/connect/registration.html.md
Co-Authored-By: Paul Banks <banks@banksco.de>
* Update website/source/docs/connect/registration.html.md
Co-Authored-By: Paul Banks <banks@banksco.de>
* add title to service registration page
* Upgrade xDS (go-control-plane) API to support Envoy 1.10.
This includes backwards compatibility shim to work around the ext_authz package rename in 1.10.
It also adds integration test support in CI for 1.10.0.
* Fix go vet complaints
* go mod vendor
* Update Envoy version info in docs
* Update website/source/docs/connect/proxies/envoy.md
The policy in the time-of-day Sentinel example incorrectly references
the top-level time.hour constant. This is actually the same as the
time.Hour Go value, so in other words, 3600000000000 (the int64 value
representing the time in nanoseconds).
This is corrected by just using time.now.hour instead.
* bump middleman-hashicorp to 0.3.40 and exclude guide rendering
* add notes to Makefile for volume mounts hack PR#5847
* make note of the PR number in the comment
Reference: https://github.com/hashicorp/consul/issues/4090
Examples covering a variety of potential use cases. Verified via `sockaddr eval` and `console agent -bind` on a test machine:
```console
# Baseline
$ sockaddr eval 'GetAllInterfaces'
[127.0.0.1/8 {1 65536 lo up|loopback} ::1 {1 65536 lo up|loopback} 10.0.0.10/8 {2 1500 eth0 b8:27:eb:7b:36:95 up|broadcast|multicast} fe80::12dc:5e4d:8ff8:2d96/64 {2 1500 eth0 b8:27:eb:7b:36:95 up|broadcast|multicast} 192.168.1.10/24 {3 1500 wlan0 b8:27:eb:2e:63:c0 up|broadcast|multicast} fe80::b6dc:5758:c306:b15b/64 {3 1500 wlan0 b8:27:eb:2e:63:c0 up|broadcast|multicast}]
# Using address within a specific CIDR
$ sockaddr eval 'GetPrivateInterfaces | include "network" "10.0.0.0/8" | attr "address"'
10.0.0.10
# Using a static network interface name
$ sockaddr eval 'GetInterfaceIP "eth0"'
10.0.0.10
# Using regular expression matching for network interface name that is forwardable and up
$ sockaddr eval 'GetAllInterfaces | include "name" "^eth" | include "flags" "forwardable|up" | attr "address"'
10.0.0.10
```
https://github.com/hashicorp/consul/issues/2121https://www.freedesktop.org/software/systemd/man/systemd.service.html
When set to notify, systemd will not attempt to start any dependent
services until after consul sends the notify signal. This is useful
in cases where there services that rely on the local consul agent
to be up and functional before they can start. The default is simple,
which will immediately mark the service as up and functioning even
if consul has not yet joined the cluster and has started listening
for connnections.
* Updating docs landing page since all the guides have moved
* fixing line wrap
* Giving the docs landing page content with CTAs
* Updated the language for the config and learn boxes
* fixing spacing
* WIP
* Document all the new Envoy L7 configs
* Apply suggestions from code review
Co-Authored-By: banks <banks@banksco.de>
* Rewrite dynamic config and add in TODO links
* Add some config entry docs
* Update website/source/docs/agent/config_entries.html.md
Co-Authored-By: mkeeler <mkeeler@users.noreply.github.com>
* Update website/source/docs/agent/config_entries.html.md
Co-Authored-By: mkeeler <mkeeler@users.noreply.github.com>
* Get rid of double negative
* Some incremental updates
* Update the config list docs to not point to service-default related things.
* A few more doc updates to get rid of some service-defaults specific linking info in the cli docs
* In progress update
* Update website/source/docs/agent/config_entries.html.md
Co-Authored-By: mkeeler <mkeeler@users.noreply.github.com>
* Reword bootstrap section
* Update example proxy-defaults config
* Finish up the examples section for managing config entries with the CLI
* Update website/source/docs/agent/config_entries.html.md
Co-Authored-By: mkeeler <mkeeler@users.noreply.github.com>
* Use $ for shell command start
* Make it very clear that the normal way to manage things is via the API/CLI
* Update website/source/docs/agent/options.html.md
Co-Authored-By: mkeeler <mkeeler@users.noreply.github.com>
* New guide listing common error messages and what to do about them
* Pasted in updates from StackPad edit
* Update website/source/docs/guides/common-errors.md
Co-Authored-By: tradel <todd@radel.us>
* Update website/source/docs/guides/common-errors.md
Co-Authored-By: tradel <todd@radel.us>
* Update website/source/docs/guides/common-errors.md
Co-Authored-By: tradel <todd@radel.us>
* add subheadings in config file errors, move doc out of guides
* modify guide index to point to learn
* adding to the redirects is a wip, updated the side navigation.
* add tracks to list
* Fixing redirects
* Update website/source/docs/guides/index.html.md
Co-Authored-By: judithpatudith <judith@hashicorp.com>
* Update website/source/docs/guides/index.html.md
Co-Authored-By: judithpatudith <judith@hashicorp.com>
* Update website/source/docs/guides/index.html.md
Co-Authored-By: judithpatudith <judith@hashicorp.com>
* Update website/source/docs/guides/index.html.md
Co-Authored-By: judithpatudith <judith@hashicorp.com>
* finish out track listings
* finishing redirects.
* change advanced language to production, add relationship of guides and docs
* Update website/source/redirects.txt
Co-Authored-By: judithpatudith <judith@hashicorp.com>
* Add api docs for the config entry endpoints
* Add enable_central_service_config field to agent docs
* Add docs for config entry CLI operations
* Fix wording and links in config entry docs
* Add links to the central service config option
* Update the central service config setting description.
Also update some snapshot agent docs
* Enforce correct permissions when registering a check
Previously we had attempted to enforce service:write for a check associated with a service instead of node:write on the agent but due to how we decoded the health check from the request it would never do it properly. This commit fixes that.
* Update website/source/docs/commands/snapshot/agent.html.markdown.erb
Co-Authored-By: mkeeler <mkeeler@users.noreply.github.com>
* starting broken link fixes
* Updating the other links for ACLs
* Updating the rest of the links
* fixing acl required links.
* update a bunch of other links
* updated a couple more broken links based on Alvins checker
* removed the extra s
Fixes: #4222
# Data Filtering
This PR will implement filtering for the following endpoints:
## Supported HTTP Endpoints
- `/agent/checks`
- `/agent/services`
- `/catalog/nodes`
- `/catalog/service/:service`
- `/catalog/connect/:service`
- `/catalog/node/:node`
- `/health/node/:node`
- `/health/checks/:service`
- `/health/service/:service`
- `/health/connect/:service`
- `/health/state/:state`
- `/internal/ui/nodes`
- `/internal/ui/services`
More can be added going forward and any endpoint which is used to list some data is a good candidate.
## Usage
When using the HTTP API a `filter` query parameter can be used to pass a filter expression to Consul. Filter Expressions take the general form of:
```
<selector> == <value>
<selector> != <value>
<value> in <selector>
<value> not in <selector>
<selector> contains <value>
<selector> not contains <value>
<selector> is empty
<selector> is not empty
not <other expression>
<expression 1> and <expression 2>
<expression 1> or <expression 2>
```
Normal boolean logic and precedence is supported. All of the actual filtering and evaluation logic is coming from the [go-bexpr](https://github.com/hashicorp/go-bexpr) library
## Other changes
Adding the `Internal.ServiceDump` RPC endpoint. This will allow the UI to filter services better.
* [docs] security warning about Helm chart
Correct security warning about helm chart to caution about default Consul install.
* clarify that k8s or consul should be secure
* website: specify value of acquire/release params for kv
* website: clarify leader election usage in TTL docs
* website: document minimal value of lockdelay
I believe it uses the default when parsing 0 as it
views that as an empty parameter in this case.
- the space after `=` is significant in sc parameters (binPath= "<path> <args>, start= auto)
- given the text "the service automatically starts up during/after boot", added `start= auto` to
the example, otherwise the service will be set to Manual start mode.
* Added a note to GCE auto-join credentials option
Simply added a note to remind users that putting a json file in the config-dir will make consul parse it as a config file.
Hope to help someone else avoid wasting a day because of these errors:
==> Error parsing /etc/consul.d/credentials.json: 10 error(s) occurred: * invalid config key private_key
* Updated according to style guidelines
Co-Authored-By: delamart <erik@delamarter.ch>
* Docs: Remove default_policy From Code Example
It is not needed according to:
https://www.consul.io/docs/agent/acl-system.html#configuring-acls
* Docs: Cleanup Commands And Their Output On ACL Guide Page
Remove extra spaces and newlines
Ensure rules match input rules
* Docs: Remove Incomplete "Added In Version" Statement
Version added is specified on parent option
* Docs: Fix Broken Links
* Docs: Minor Sentence Tweaks
This PR introduces reloading tls configuration. Consul will now be able to reload the TLS configuration which previously required a restart. It is not yet possible to turn TLS ON or OFF with these changes. Only when TLS is already turned on, the configuration can be reloaded. Most importantly the certificates and CAs.
* Fix race condition in DNS when using cache
The healty node filtering was modifying the result from the cache, which
caused a crash when multiple queries were made to the same service
simultaneously.
We now copy the node slice before filtering to ensure we do not modify
the data stored in the cache.
* Fix wording in dns cache config doc
s/dns_max_age/cache_max_age/
This PR adds two features which will be useful for operators when ACLs are in use.
1. Tokens set in configuration files are now reloadable.
2. If `acl.enable_token_persistence` is set to `true` in the configuration, tokens set via the `v1/agent/token` endpoint are now persisted to disk and loaded when the agent starts (or during configuration reload)
Note that token persistence is opt-in so our users who do not want tokens on the local disk will see no change.
Some other secondary changes:
* Refactored a bunch of places where the replication token is retrieved from the token store. This token isn't just for replicating ACLs and now it is named accordingly.
* Allowed better paths in the `v1/agent/token/` API. Instead of paths like: `v1/agent/token/acl_replication_token` the path can now be just `v1/agent/token/replication`. The old paths remain to be valid.
* Added a couple new API functions to set tokens via the new paths. Deprecated the old ones and pointed to the new names. The names are also generally better and don't imply that what you are setting is for ACLs but rather are setting ACL tokens. There is a minor semantic difference there especially for the replication token as again, its no longer used only for ACL token/policy replication. The new functions will detect 404s and fallback to using the older token paths when talking to pre-1.4.3 agents.
* Docs updated to reflect the API additions and to show using the new endpoints.
* Updated the ACL CLI set-agent-tokens command to use the non-deprecated APIs.
Adds two new configuration parameters "dns_config.use_cache" and
"dns_config.cache_max_age" controlling how DNS requests use the agent
cache when querying servers.
* Add common blocking implementation details to docs
These come up over and over again with blocking query loops in our own code and third-party's. #5333 is possibly a case (unconfirmed) where "badly behaved" blocking clients cause issues, however since we've never explicitly documented these things it's not reasonable for third-party clients to have guessed that they are needed!
This hopefully gives us something to point to for the future.
It's a little wordy - happy to consider breaking some of the blocking stuff out of this page if we think it's appropriate but just wanted to quickly plaster over this gap in our docs for now.
* Update index.html.md
* Apply suggestions from code review
Co-Authored-By: banks <banks@banksco.de>
* Update index.html.md
* Update index.html.md
* Clearified monotonically
* Fixing formating
* Updating the Helm chart to include ACL parameter and examples.
* Updates based on feedback.
* Update website/source/docs/platform/k8s/helm.html.md
Co-Authored-By: kaitlincarter-hc <43049322+kaitlincarter-hc@users.noreply.github.com>
* Confirm RA against Consul 1.3
Change product_version frontmatter to ea_version and increase to 1.3
* Confirm DG against Consul 1.3
Change product_version frontmatter to ea_version and increase to 1.3
The guide currently uses node, service, and service for the UI Policy.
This will cause a practically useless UI. This patch uses the _prefix
variants instead which will have the intended behavior.
It appears that the `read` command for ACL policies was used to template the `read` command for ACL tokens, and an invalid option was not dropped from the docs.
Given a query like:
```
{
"Name": "tagged-connect-query",
"Service": {
"Service": "foo",
"Tags": ["tag"],
"Connect": true
}
}
```
And a Consul configuration like:
```
{
"services": [
"name": "foo",
"port": 8080,
"connect": { "sidecar_service": {} },
"tags": ["tag"]
]
}
```
If you executed the query it would always turn up with 0 results. This was because the sidecar service was being created without any tags. You could instead make your config look like:
```
{
"services": [
"name": "foo",
"port": 8080,
"connect": { "sidecar_service": {
"tags": ["tag"]
} },
"tags": ["tag"]
]
}
```
However that is a bit redundant for most cases. This PR ensures that the tags and service meta of the parent service get copied to the sidecar service. If there are any tags or service meta set in the sidecar service definition then this copying does not take place. After the changes, the query will now return the expected results.
A second change was made to prepared queries in this PR which is to allow filtering on ServiceMeta just like we allow for filtering on NodeMeta.
* Support rate limiting and concurrency limiting CSR requests on servers; handle CA rotations gracefully with jitter and backoff-on-rate-limit in client
* Add CSR rate limiting docs
* Fix config naming and add tests for new CA configs
* Stared updaing links for the learn migration
* Language change cluster -> datacenter (#5212)
* Updating the language from cluster to datacenter in the backup guide to be consistent and more accurate.
* missed some clusters
* updated three broken links for the sidebar nav
Adds info about `k8stag` and `nodePortSyncType` options that were
added in consul-helm v0.5.0.
Additionally moves the k8sprefix to match the order in the Helm chart
values file, while also clarifying that it only affects one sync
direction.
hashicorp-ci