This patch adds a new /agent/v1/metrics that will return metrics on the
running Vault agent. Configuration is done using the same telemetry
stanza as the Vault server. For now default runtime metrics are
returned with a few additional ones specific to the agent:
- `vault.agent.auth.failure` and `vault.agent.auth.success` to monitor
the correct behavior of the auto auth mechanism
- `vault.agent.proxy.success`, `vault.agent.proxy.client_error` and
`vault.agent.proxy.error` to check the connection with the Vault server
- `vault.agent.cache.hit` and `vault.agent.cache.miss` to monitor the
cache
Closes https://github.com/hashicorp/vault/issues/8649
Co-authored-by: Theron Voran <tvoran@users.noreply.github.com>
* Added flag to disable X-Vault-Token header proxy if client passes the token
* Reveresed the flag value to better match the name intent
* Introduced UseAutoAuthTokenRaw for Cache to support triplicate value of true/false/force
Co-authored-by: Clint <catsby@users.noreply.github.com>
* agent/caching: proxy redirect and non-json responses; update tests
* agent/caching: do not wrap error responses as internal errors, simply proxy them back as-is
* minor refactoring of APIProxy.Send logic
* add test case to ensure error response is not wrapped
* Properly compute auto-auth token
* Use inmem sink to track auto-auth token
* update debug statement
* Only add inmem sink if using auto-auth token is allowed
* vault-agent-cache: squashed 250+ commits
* Add proper token revocation validations to the tests
* Add more test cases
* Avoid leaking by not closing request/response bodies; add comments
* Fix revoke orphan use case; update tests
* Add CLI test for making request over unix socket
* agent/cache: remove namespace-related tests
* Strip-off the auto-auth token from the lookup response
* Output listener details along with configuration
* Add scheme to API address output
* leasecache: use IndexNameLease for prefix lease revocations
* Make CLI accept the fully qualified unix address
* export VAULT_AGENT_ADDR=unix://path/to/socket
* unix:/ to unix://
