* 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.
If a user installs the default Helm chart Consul on a Kubernetes
cluster that is open to the internet, it is lacking some important
security configurations.
* Re-worked the ACL guide into two docs and an updated guide.
Co-Authored-By: kaitlincarter-hc <43049322+kaitlincarter-hc@users.noreply.github.com>
* Updating syntax based on amayer5125's comments.
* Missed one of amayer5125's comments
* found a bad link in the acl system docs
* fixing a link in the rules docs
This endpoint aggregates all checks related to <service id> on the agent
and return an appropriate http code + the string describing the worst
check.
This allows to cleanly expose service status to other component, hiding
complexity of multiple checks.
This is especially useful to use consul to feed a load balancer which
would delegate health checking to consul agent.
Exposing this endpoint on the agent is necessary to avoid a hit on
consul servers and avoid decreasing resiliency (this endpoint will work
even if there is no consul leader in the cluster).
* Adding the new backup guide
* Update website/source/docs/guides/backup.html.md
Looks good.
Co-Authored-By: kaitlincarter-hc <43049322+kaitlincarter-hc@users.noreply.github.com>
* Update website/source/docs/guides/backup.html.md
Co-Authored-By: kaitlincarter-hc <43049322+kaitlincarter-hc@users.noreply.github.com>
* Update website/source/docs/guides/backup.html.md
Co-Authored-By: kaitlincarter-hc <43049322+kaitlincarter-hc@users.noreply.github.com>
* Update website/source/docs/guides/backup.html.md
Co-Authored-By: kaitlincarter-hc <43049322+kaitlincarter-hc@users.noreply.github.com>
* Updated the directions for the restore command.
* Update website/source/docs/guides/backup.html.md
Co-Authored-By: kaitlincarter-hc <43049322+kaitlincarter-hc@users.noreply.github.com>
* Update website/source/docs/guides/backup.html.md
Co-Authored-By: kaitlincarter-hc <43049322+kaitlincarter-hc@users.noreply.github.com>
* updated the token env
* Trying to make it extra clear where to run the commands.
* added not that list of backed up items isn't inclusive
There has been some confusion about the formating of multi-line
string variables in the Helm chart. This adds examples for these
situations, hopefully clarifying things for users.
* added a new section for adding servers, updated section titles, and added code snippets.
* Fixing typos
* fixing typos
* Addressing some of Paul's feedback.
* Updated the outage recovery recommendation
* Adding examples and a summary. Minor structure updates.
* Added a link to the deployment guide, but needed to remove a sentence referring to a guide that's not published yet.
* fixed typo
This changes with time so will opt to not hardcoding this. Investigated using the middleman helper to render
out the current configured version but that won't exist on learn.hashicorp.com so I think this
is the most future-proof way.
* Adding the new Consul Template Guide.
* Update website/source/docs/guides/consul-template.html.md
Co-Authored-By: kaitlincarter-hc <43049322+kaitlincarter-hc@users.noreply.github.com>
* Update website/source/docs/guides/consul-template.html.md
Co-Authored-By: kaitlincarter-hc <43049322+kaitlincarter-hc@users.noreply.github.com>
* Update website/source/docs/guides/consul-template.html.md
Co-Authored-By: kaitlincarter-hc <43049322+kaitlincarter-hc@users.noreply.github.com>
* Update website/source/docs/guides/consul-template.html.md
Co-Authored-By: kaitlincarter-hc <43049322+kaitlincarter-hc@users.noreply.github.com>
* Making updates based on Pauls feedback.
* Update website/source/docs/guides/consul-template.html.md
Co-Authored-By: kaitlincarter-hc <43049322+kaitlincarter-hc@users.noreply.github.com>
* Update website/source/docs/guides/consul-template.html.md
Co-Authored-By: kaitlincarter-hc <43049322+kaitlincarter-hc@users.noreply.github.com>
* Update website/source/docs/guides/consul-template.html.md
Co-Authored-By: kaitlincarter-hc <43049322+kaitlincarter-hc@users.noreply.github.com>
* Couple more updates based on Pauls feedback.
* updated the intro to include how template can replace api use
* updated the address
* Adding minikube guide to the index page.
* Adds images for Minikube guide
* Adds notes about Helm YAML configuration
* Embed Wistia video for Consul Minikube guide
* Cleans up menus, instructions, Helm steps
* Adds captions for all images
* Uses Docker images hosted on hashicorp org for demo
* Adds link to Minikube guide from menu and k8s index page
* Clarify steps in Minikube/Kubernetes guide
* Adds note about use of Fastly VCL for redirects
Some redirects are not possible with a redirect file, so we send traffic to
learn.hashicorp.com with custom VCL (Varnish) handlers using the Fastly web
admin.
Future migrations of content to learn.hashicorp.com should also use this
approach.
* adding file2consul listing
* minor edit
* modified wording added some punctuation
* Moved file2consul so it is listed in alpha order. Replaces Pull Request # #4942
* website: add multi-dc enterprise landing page
* website: switch all 1.4.0 alerts/RC warnings
* website: connect product wording
Co-Authored-By: pearkes <jackpearkes@gmail.com>
* website: remove RC notification
* commmand/acl: fix usage docs for ACL tokens
* agent: remove comment, OperatorRead
* website: improve multi-dc docs
Still not happy with this but tried to make it slightly more informative.
* website: put back acl guide warning for 1.4.0
* website: simplify multi-dc page and respond to feedback
* Fix Multi-DC typos on connect index page.
* Improve Multi-DC overview.
A full guide is a WIP and will be added post-release.
* Fixes typo avaiable > available
There is a fine line between making the helm chart easy and simple to
use and supporting lots of configurability. This documents options for
users who would like to extend the Helm chart beyond what is readily
available in the `values.yaml` file.
This adds two Helm chart values into the documentation with details
that have come up in several issues.
Additionally, it notes that persistent volumes and their claims need
to be removed manually because of current kubernetes and helm design.
* Adds redirects for Getting Started pages
* Uses correct links to resources at learn.hashicorp
* Reconfigures "Learn more" links to point to learn.hashicorp
* Links to learn.hashicorp on segmentation page
* Adds redirect for sample config file
* Fixes links to Getting Started guide on learn.hashicorp
* Remove getting started guide which is now on learn.hashicorp
* Corrects link to `consul/io` which should go to `consul.io`
* Revert "Remove getting started guide which is now on learn.hashicorp"
This reverts commit 2cebacf402 so a placeholder
message can be written here while we are transitioning content to
learn.hashicorp
* Adding a new page for getting started to direct users to learn.
* Added a note at the being of each doc to notify users about the temporary repo change.
* Revert "Added a note at the being of each doc to notify users about the temporary repo change."
This reverts commit 9a2a8781f9.
From conversation at https://github.com/hashicorp/consul/pull/4878
* Removes redirect from sample web.json demo file
* Removed typo
* Update the ACL API docs
* Add a CreateTime to the anon token
Also require acl:read permissions at least to perform rule translation. Don’t want someone DoSing the system with an open endpoint that actually does a bit of work.
* Fix one place where I was referring to id instead of AccessorID
* Add godocs for the API package additions.
* Minor updates: removed some extra commas and updated the acl intro paragraph
* minor tweaks
* Updated the language to be clearer
* Updated the language to be clearer for policy page
* I was also confused by that! Your updates are much clearer.
Co-Authored-By: kaitlincarter-hc <43049322+kaitlincarter-hc@users.noreply.github.com>
* Sounds much better.
Co-Authored-By: kaitlincarter-hc <43049322+kaitlincarter-hc@users.noreply.github.com>
* Updated sidebar layout and deprecated warning
* Fix partial rendering in service command (CLI) help
* Fix sample JSON to be a valid json for service registration
* Add missing id field to make the complete document complete.
This field was added back into the helm chart, but it was not added
back to the documentation. This adds it, then additionally fixes a
few typos in the same file.
* Implement CLI token cloning & special ID handling
* Update a couple CLI commands to take some alternative options.
* Document the CLI.
* Update the policy list and set-agent-token synopsis
Based on info from consul-helm issue 16, the formatting of the helm
chart value for joining an external cluster needs to be specified
as a yaml array. This updates the documentation to reflect this.
This PR is almost a complete rewrite of the ACL system within Consul. It brings the features more in line with other HashiCorp products. Obviously there is quite a bit left to do here but most of it is related docs, testing and finishing the last few commands in the CLI. I will update the PR description and check off the todos as I finish them over the next few days/week.
Description
At a high level this PR is mainly to split ACL tokens from Policies and to split the concepts of Authorization from Identities. A lot of this PR is mostly just to support CRUD operations on ACLTokens and ACLPolicies. These in and of themselves are not particularly interesting. The bigger conceptual changes are in how tokens get resolved, how backwards compatibility is handled and the separation of policy from identity which could lead the way to allowing for alternative identity providers.
On the surface and with a new cluster the ACL system will look very similar to that of Nomads. Both have tokens and policies. Both have local tokens. The ACL management APIs for both are very similar. I even ripped off Nomad's ACL bootstrap resetting procedure. There are a few key differences though.
Nomad requires token and policy replication where Consul only requires policy replication with token replication being opt-in. In Consul local tokens only work with token replication being enabled though.
All policies in Nomad are globally applicable. In Consul all policies are stored and replicated globally but can be scoped to a subset of the datacenters. This allows for more granular access management.
Unlike Nomad, Consul has legacy baggage in the form of the original ACL system. The ramifications of this are:
A server running the new system must still support other clients using the legacy system.
A client running the new system must be able to use the legacy RPCs when the servers in its datacenter are running the legacy system.
The primary ACL DC's servers running in legacy mode needs to be a gate that keeps everything else in the entire multi-DC cluster running in legacy mode.
So not only does this PR implement the new ACL system but has a legacy mode built in for when the cluster isn't ready for new ACLs. Also detecting that new ACLs can be used is automatic and requires no configuration on the part of administrators. This process is detailed more in the "Transitioning from Legacy to New ACL Mode" section below.
* agent/debug: add package for debugging, host info
* api: add v1/agent/host endpoint
* agent: add v1/agent/host endpoint
* command/debug: implementation of static capture
* command/debug: tests and only configured targets
* agent/debug: add basic test for host metrics
* command/debug: add methods for dynamic data capture
* api: add debug/pprof endpoints
* command/debug: add pprof
* command/debug: timing, wg, logs to disk
* vendor: add gopsutil/disk
* command/debug: add a usage section
* website: add docs for consul debug
* agent/host: require operator:read
* api/host: improve docs and no retry timing
* command/debug: fail on extra arguments
* command/debug: fixup file permissions to 0644
* command/debug: remove server flags
* command/debug: improve clarity of usage section
* api/debug: add Trace for profiling, fix profile
* command/debug: capture profile and trace at the same time
* command/debug: add index document
* command/debug: use "clusters" in place of members
* command/debug: remove address in output
* command/debug: improve comment on metrics sleep
* command/debug: clarify usage
* agent: always register pprof handlers and protect
This will allow us to avoid a restart of a target agent
for profiling by always registering the pprof handlers.
Given this is a potentially sensitive path, it is protected
with an operator:read ACL and enable debug being
set to true on the target agent. enable_debug still requires
a restart.
If ACLs are disabled, enable_debug is sufficient.
* command/debug: use trace.out instead of .prof
More in line with golang docs.
* agent: fix comment wording
* agent: wrap table driven tests in t.run()
In case `verify_server_hostname` is set in the configuration, Consul checks the certificate against `server.<datacenter>.<domain>`.
The name suggested by the guide generates errors like the following:
```
2018/10/10 12:42:20 [ERR] consul: Failed to confirm peer status for consul-3: rpc error getting client: failed to get conn: x509: certificate is valid for server.node.consul.labs, localhost, not server.consul.labs. Retrying in 16s...
```
Removing the `node` part from the certificate permits them to work also when that option is set.
* Add -enable-local-script-checks options
These options allow for a finer control over when script checks are enabled by
giving the option to only allow them when they are declared from the local
file system.
* Add documentation for the new option
* Nitpick doc wording
* Initial draft of Sidecar Service and Managed Proxy deprecation docs
* Service definition deprecation notices and sidecar service
* gRPC and sidecar service config options; Deprecate managed proxy options
* Envoy Docs: Basic envoy command; envoy getting started/intro
* Remove change that snuck in
* Envoy custom config example
* Add agent/service API docs; deprecate proxy config endpoint
* Misc grep cleanup for managed proxies; capitalize Envoy
* Updates to getting started guide
* Add missing link
* Refactor Envoy guide into a separate guide and add bootstrap reference notes.
* Add limitations to Envoy docs; Highlight no fixes for known managed proxy issues on deprecation page; clarify snake cae stuff; Sidecar Service lifecycle
* Refactor Service Definition ProxyDestination.
This includes:
- Refactoring all internal structs used
- Updated tests for both deprecated and new input for:
- Agent Services endpoint response
- Agent Service endpoint response
- Agent Register endpoint
- Unmanaged deprecated field
- Unmanaged new fields
- Managed deprecated upstreams
- Managed new
- Catalog Register
- Unmanaged deprecated field
- Unmanaged new fields
- Managed deprecated upstreams
- Managed new
- Catalog Services endpoint response
- Catalog Node endpoint response
- Catalog Service endpoint response
- Updated API tests for all of the above too (both deprecated and new forms of register)
TODO:
- config package changes for on-disk service definitions
- proxy config endpoint
- built-in proxy support for new fields
* Agent proxy config endpoint updated with upstreams
* Config file changes for upstreams.
* Add upstream opaque config and update all tests to ensure it works everywhere.
* Built in proxy working with new Upstreams config
* Command fixes and deprecations
* Fix key translation, upstream type defaults and a spate of other subtele bugs found with ned to end test scripts...
TODO: tests still failing on one case that needs a fix. I think it's key translation for upstreams nested in Managed proxy struct.
* Fix translated keys in API registration.
≈
* Fixes from docs
- omit some empty undocumented fields in API
- Bring back ServiceProxyDestination in Catalog responses to not break backwards compat - this was removed assuming it was only used internally.
* Documentation updates for Upstreams in service definition
* Fixes for tests broken by many refactors.
* Enable travis on f-connect branch in this branch too.
* Add consistent Deprecation comments to ProxyDestination uses
* Update version number on deprecation notices, and correct upstream datacenter field with explanation in docs
* Add cache types for catalog/services and health/services and basic test that caching works
* Support non-blocking cache types with Cache-Control semantics.
* Update API docs to include caching info for every endpoint.
* Comment updates per PR feedback.
* Add note on caching to the 10,000 foot view on the architecture page to make the new data path more clear.
* Document prepared query staleness quirk and force all background requests to AllowStale so we can spread service discovery load across servers.
In designing a potential UI for a configuration of `enable_tag_override`,
I found the documentation confusing and lengthy. Here, I've made an
attempt at re-writing this section to be more concise and clear.
I also made a few small changes to the organization of this file to map
explanations to the order of the properties listing at the top. I find
it easier to scan docs when explanations appear in the same order they
are listed at the top. For explanations that span multiple paragraphs, I
provided a subheading, which also helps in linking from other pages.
Finally, I removed a duplicated paragraph from the documentation.
* Fill in gaps in semaphore guide
* Update to match that values come back b64 encoded
* Add that the value needs to be decoded
* Remove outdated reference to session1
* Fix some typos
* Clarify what is mean by a session having an active key
* Clarify requirements for lock holders in semaphore guide
* Adds Deployment Guide and update links
* Fixes releases link
* Re-organisation of content
* Cuts down "deployment" doc (which should focus on Reference Architecture) by moving raft and performance tuning to the Server Performance page which already covers some of this.
* Moves backups from "deployment" doc (which should focus on Reference Architecture) to "deployment-guide"
* Cleans up some notes and add single DC diagram
* Removes old link to deployment guide from nav
* Corrects minor styling, formatting, and grammar
* website: initial Kubernetes section with Helm information
* website: extraConfig for clients
* website: add more helm fields
* website: document extraVolumes
* website: document Consul DNS
* website: fix typos and show example of downward API
Fixes: #4578
Prior to this fix if there was an error binding to ports for the DNS servers the error would be swallowed by the gated log writer and never output. This fix propagates the DNS server errors back to the shell with a multierror.
* Implementation of Weights Data structures
Adding this datastructure will allow us to resolve the
issues #1088 and #4198
This new structure defaults to values:
```
{ Passing: 1, Warning: 0 }
```
Which means, use weight of 0 for a Service in Warning State
while use Weight 1 for a Healthy Service.
Thus it remains compatible with previous Consul versions.
* Implemented weights for DNS SRV Records
* DNS properly support agents with weight support while server does not (backwards compatibility)
* Use Warning value of Weights of 1 by default
When using DNS interface with only_passing = false, all nodes
with non-Critical healthcheck used to have a weight value of 1.
While having weight.Warning = 0 as default value, this is probably
a bad idea as it breaks ascending compatibility.
Thus, we put a default value of 1 to be consistent with existing behaviour.
* Added documentation for new weight field in service description
* Better documentation about weights as suggested by @banks
* Return weight = 1 for unknown Check states as suggested by @banks
* Fixed typo (of -> or) in error message as requested by @mkeeler
* Fixed unstable unit test TestRetryJoin
* Fixed unstable tests
* Fixed wrong Fatalf format in `testrpc/wait.go`
* Added notes regarding DNS SRV lookup limitations regarding number of instances
* Documentation fixes and clarification regarding SRV records with weights as requested by @banks
* Rephrase docs
kaitlincarter-hc