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| author | Alex Auvolat <alex@adnab.me> | 2022-01-13 12:34:24 +0100 |
|---|---|---|
| committer | Alex Auvolat <alex@adnab.me> | 2022-01-13 12:34:24 +0100 |
| commit | de4bc8abc45dd85518e1458f11bbe1713d5bbb20 (patch) | |
| tree | 5ca55fc8e64987da98ffd78767d06eb77807817f | |
| parent | f8d21c8b375641f8a134cff88f5a5efaa8a17e38 (diff) | |
| download | tricot-de4bc8abc45dd85518e1458f11bbe1713d5bbb20.tar.gz tricot-de4bc8abc45dd85518e1458f11bbe1713d5bbb20.zip | |
Add info about logs
| -rw-r--r-- | README.md | 17 |
1 files changed, 13 insertions, 4 deletions
@@ -1,4 +1,4 @@ -## Tricot +# Tricot Tricot is a reverse-proxy for exposing your services via TLS that integrates well with Consul and Nomad. @@ -13,7 +13,7 @@ Tricot does the following things: - Load-balance incoming requests among different available backends, or redirect all requests to the best-available matching backend, depending on desired configuration - Optionnally, compress data comming from the backend before forwarding it to the client -### Configuring Tricot +## Configuring Tricot Tricot uses the following environment variables for its configuration (they can also be passed as command line arguments, see `--help`): @@ -29,7 +29,7 @@ Tricot uses the following environment variables for its configuration (they can [Here is an example of how to run Tricot as a Nomad service](https://git.deuxfleurs.fr/Deuxfleurs/nixcfg/src/branch/main/app/frontend/deploy/frontend-tricot.hcl) (in this example it also integrates with [Diplonat](https://git.deuxfleurs.fr/Deuxfleurs/diplonat)). -### Adding and priorizing backends +## Adding and priorizing backends Backends are configured by adding tags of the following form to the services in Consul: @@ -49,7 +49,7 @@ Any number of such rules can be combined freely. [some](https://git.deuxfleurs.fr/Deuxfleurs/nixcfg/src/branch/main/app/im/deploy/im.hcl) [examples](https://git.deuxfleurs.fr/Deuxfleurs/infrastructure/src/branch/main/app/jitsi/deploy/jitsi.hcl). -### How Tricot matches backends +## How Tricot matches backends Tricot priorizes backend nodes in the following order: @@ -58,3 +58,12 @@ Tricot priorizes backend nodes in the following order: 3. Select rule that redirects request to the same node Tricot is running on, except `tricot-site-lb` or `tricot-global-lb` is used 4. Select rule that redirects request to a node that is running in the same site (geographical region, datacenter, whatever) than the node Tricot is running on, based on the metadata key `site` in Consul's node information, if such information is available, except if `tricot-global-lb` is used 5. Round-robin selection of backend nodes + +## Knowing what Tricot is doing + +Logs are the privileged place to get information about what Tricot is doing. You can set the log level by changing the `RUST_LOG` environment variable. The following log levels are avaialble: + +- `RUST_LOG=tricot=warn`: Tricot will only show warning and errors, it should be quite quiet +- `RUST_LOG=tricot=info`: Tricot will dump the proxy configuration (the set of rules it uses to match backends) each time it changes, and will show a line for each incoming request (but it won't indicate which backend the request was routed to). You will also get information about certificate obtention and renewal using Let's Encrypt. +- `RUST_LOG=tricot=debug`: Tricot will show for each request the backend to which it is routed. It will also show all of its interactions with Consul +- `RUST_LOG=tricot=trace`: Tricot will show details such as the request's headers for all request at all stages of proxying. |