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docs: Improve documentation and add ghcr Docker image link

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@ -21,15 +21,19 @@ core applications: https://status.twin.sh/
```console
docker run -p 8080:8080 --name gatus twinproduction/gatus
```
You can also use GitHub Container Registry if you prefer:
```console
docker run -p 8080:8080 --name gatus ghcr.io/twin/gatus
```
For more details, see [Usage](#usage)
</details>
> ❤ Like this project? Please consider [sponsoring me](https://github.com/sponsors/TwiN).
![Gatus dashboard](.github/assets/dashboard-dark.png)
Have any feedback or questions? [Create a discussion](https://github.com/TwiN/gatus/discussions/new).
Like this project? Please consider [sponsoring me](https://github.com/sponsors/TwiN).
## Table of Contents
- [Why Gatus?](#why-gatus)
@ -129,6 +133,20 @@ The main features of Gatus are:
## Usage
<details>
<summary><b>Quick start</b></summary>
```console
docker run -p 8080:8080 --name gatus twinproduction/gatus
```
You can also use GitHub Container Registry if you prefer:
```console
docker run -p 8080:8080 --name gatus ghcr.io/twin/gatus
```
If you want to create your own configuration, see [Docker](#docker) for information on how to mount a configuration file.
</details>
By default, the configuration file is expected to be at `config/config.yaml`.
You can specify a custom path by setting the `GATUS_CONFIG_FILE` environment variable.
@ -211,6 +229,7 @@ If you want to test it locally, see [Docker](#docker).
| `ui.buttons[].link` | Link to open when the button is clicked. | Required `""` |
| `maintenance` | [Maintenance configuration](#maintenance). | `{}` |
### Conditions
Here are some examples of conditions you can use:
@ -259,7 +278,7 @@ Here are some examples of conditions you can use:
| `pat` | Specifies that the string passed as parameter should be evaluated as a pattern. Works only with `==` and `!=`. | `[IP] == pat(192.168.*)` |
| `any` | Specifies that any one of the values passed as parameters is a valid value. Works only with `==` and `!=`. | `[BODY].ip == any(127.0.0.1, ::1)` |
**NOTE**: Use `pat` only when you need to. `[STATUS] == pat(2*)` is a lot more expensive than `[STATUS] < 300`.
> 💡 Use `pat` only when you need to. `[STATUS] == pat(2*)` is a lot more expensive than `[STATUS] < 300`.
### Storage
@ -310,7 +329,7 @@ the client used to send the request.
| `client.oauth2.client-secret` | The client secret which should be used for the `Client credentials flow` | required `""` |
| `client.oauth2.scopes[]` | A list of `scopes` which should be used for the `Client credentials flow`. | required `[""]` |
Note that some of these parameters are ignored based on the type of endpoint. For instance, there's no certificate involved
> 📝 Some of these parameters are ignored based on the type of endpoint. For instance, there's no certificate involved
in ICMP requests (ping), therefore, setting `client.insecure` to `true` for an endpoint of that type will not do anything.
This default configuration is as follows:
@ -366,7 +385,7 @@ endpoints:
Gatus supports multiple alerting providers, such as Slack and PagerDuty, and supports different alerts for each
individual endpoints with configurable descriptions and thresholds.
Note that if an alerting provider is not properly configured, all alerts configured with the provider's type will be
> 📝 If an alerting provider is not properly configured, all alerts configured with the provider's type will be
ignored.
| Parameter | Description | Default |
@ -474,7 +493,7 @@ endpoints:
send-on-resolved: true
```
**NOTE:** Some mail servers are painfully slow.
> ⚠ Some mail servers are painfully slow.
#### Configuring GitHub alerts
@ -771,6 +790,7 @@ endpoints:
| `alerting.slack.overrides` | List of overrides that may be prioritized over the default configuration | `[]` |
| `alerting.slack.overrides[].group` | Endpoint group for which the configuration will be overridden by this configuration | `""` |
| `alerting.slack.overrides[].webhook-url` | Slack Webhook URL | `""` |
```yaml
alerting:
slack:
@ -1088,7 +1108,7 @@ To do that, you'll have to use the maintenance configuration:
| `maintenance.duration` | Duration of the maintenance window (e.g. `1h`, `30m`) | Required `""` |
| `maintenance.every` | Days on which the maintenance period applies (e.g. `[Monday, Thursday]`).<br />If left empty, the maintenance window applies every day | `[]` |
**Note that the maintenance configuration uses UTC.**
> 📝 The maintenance configuration uses UTC
Here's an example:
```yaml
@ -1131,8 +1151,8 @@ security:
password-bcrypt-base64: "JDJhJDEwJHRiMnRFakxWazZLdXBzRERQazB1TE8vckRLY05Yb1hSdnoxWU0yQ1FaYXZRSW1McmladDYu"
```
**WARNING:** Make sure to carefully select to cost of the bcrypt hash. The higher the cost, the longer it takes to compute the hash,
and basic auth verifies the password against the hash on every request. As of 2022-01-08, I suggest a cost of 8.
> ⚠ Make sure to carefully select to cost of the bcrypt hash. The higher the cost, the longer it takes to compute the hash,
and basic auth verifies the password against the hash on every request. As of 2023-01-06, I suggest a cost of 9.
#### OIDC
@ -1290,7 +1310,7 @@ will send a `POST` request to `http://localhost:8080/playground` with the follow
### Recommended interval
> **NOTE**: This does not apply if `disable-monitoring-lock` is set to `true`, as the monitoring lock is what
> 📝 This does not apply if `disable-monitoring-lock` is set to `true`, as the monitoring lock is what
> tells Gatus to only evaluate one endpoint at a time.
To ensure that Gatus provides reliable and accurate results (i.e. response time), Gatus only evaluates one endpoint at a time
@ -1346,7 +1366,7 @@ Placeholders `[STATUS]` and `[BODY]` as well as the fields `endpoints[].body`, `
This works for applications such as databases (Postgres, MySQL, etc.) and caches (Redis, Memcached, etc.).
**NOTE**: `[CONNECTED] == true` does not guarantee that the endpoint itself is healthy - it only guarantees that there's
> 📝 `[CONNECTED] == true` does not guarantee that the endpoint itself is healthy - it only guarantees that there's
something at the given address listening to the given port, and that a connection to that address was successfully
established.
@ -1462,7 +1482,7 @@ endpoints:
- "[CERTIFICATE_EXPIRATION] > 240h"
```
**NOTE**: The usage of the `[DOMAIN_EXPIRATION]` placeholder requires Gatus to send a request to the official IANA WHOIS service [through a library](https://github.com/TwiN/whois)
> ⚠ The usage of the `[DOMAIN_EXPIRATION]` placeholder requires Gatus to send a request to the official IANA WHOIS service [through a library](https://github.com/TwiN/whois)
and in some cases, a secondary request to a TLD-specific WHOIS server (e.g. `whois.nic.sh`).
To prevent the WHOIS service from throttling your IP address if you send too many requests, Gatus will prevent you from
using the `[DOMAIN_EXPIRATION]` placeholder on an endpoint with an interval of less than `5m`.
@ -1503,7 +1523,7 @@ to make.
**If you are not using a file storage**, updating the configuration while Gatus is running is effectively
the same as restarting the application.
**NOTE:** Updates may not be detected if the config file is bound instead of the config folder. See [#151](https://github.com/TwiN/gatus/issues/151).
> 📝 Updates may not be detected if the config file is bound instead of the config folder. See [#151](https://github.com/TwiN/gatus/issues/151).
### Endpoint groups