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184 lines
5.1 KiB
Markdown
184 lines
5.1 KiB
Markdown
Alerta Web UI 7.0
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=================
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[](https://github.com/alerta/alerta-webui/actions) [](https://slack.alerta.dev)
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Version 7.0 of the Alerta web UI is a [VueJS](https://vuejs.org/) web app.
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Installation
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------------
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To install the web console:
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$ wget https://github.com/alerta/alerta-webui/releases/latest/download/alerta-webui.tar.gz
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$ tar zxvf alerta-webui.tar.gz
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$ cd dist
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$ python3 -m http.server 8000
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>> browse to http://localhost:8000
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Configuration
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-------------
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Most configuration will come from the Alerta API server. The minimum,
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and most common, configuration is simply to tell the web UI where the
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API server is located.
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Environment variables for some settings can be used at build time:
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$ export VUE_APP_ALERTA_ENDPOINT=https://alerta-api.example.com
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$ npm install
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$ npm run build
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or place a `config.json` configuration file in the `dist` directory
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for run time configuration:
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{
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"endpoint": "https://alerta-api.example.com"
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}
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Any setting from the API server can be overridden if included in
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the local `config.json` file. For a full list of supported settings
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see the web UI config settings in the [online docs][1].
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[1]: https://docs.alerta.io/en/latest/webui.html#configuration-from-api-server
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As a special case, support for setting an OAuth Client ID using a
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build-time environment variable is possible but should not be be
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necessary for most deployments.
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$ export VUE_APP_CLIENT_ID=0ffe5d26-6c66-4871-a6fa-593d9fa972b1
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Quick Start
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-----------
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A docker container that is built using the most recent master branch is
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available for download from Docker Hub.
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$ docker pull alerta/alerta-beta
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It can also be built locally using the `Dockerfile` in this repository.
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$ docker build -t alerta/alerta-beta .
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To run, create a `config.json` file and mount the file into the container
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$ echo '{"endpoint": "https://alerta-api.example.com"}' > config.json
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$ docker run -v "$PWD/config.json:/usr/share/nginx/html/config.json" \
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-it -p 8000:80 --rm --name alerta-beta alerta/alerta-beta
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Note: Update the `CORS_ORIGINS` setting in the Alerta API server config
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to include the URL that the beta web console is hosted at otherwise
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the browser will throw "blocked by CORS policy" errors and not work.
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Deployment
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----------
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Since this is a static web app then a production deployment of Alerta web UI
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is simply a matter of downloading the release tarball and copying the `dist`
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directory to the a location that can be served via a web server or CDN.
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See the [VueJS platform guide][2] for more information.
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[2]: https://cli.vuejs.org/guide/deployment.html#general-guidelines
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Troubleshooting
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---------------
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The two main issues with deployment in production involve CORS and HTML5
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history mode.
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### Cross-origin Errors (CORS) ###
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All modern browsers restrict access of a web app running at one domain to
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resources at a different origin (domain). This mechanism is known as [CORS][3].
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[3]: https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS
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To ensure that the Alerta web app has permission to access the Alerta API
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at a different origin the web URL needs to be added to the `CORS_ORIGINS`
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settings for the API.
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See [API server configuration][4] for more details.
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[4]: https://docs.alerta.io/en/latest/configuration.html#cors-config
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### HTML5 History Mode
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The web app uses [HTML5 history mode][4] so you must ensure to configure
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the web server or CDN correctly otherwise users will get `404` errors when
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accessing deep links such as `/alert/:id` directly in their browser.
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The fix is to provide a [catch-all fallback route][5] so that any URL that
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doesn't match a static asset will be handled by the web app and redirected.
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**Example using nginx**
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```
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location / {
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try_files $uri $uri/ /index.html;
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}
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```
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[5]: https://router.vuejs.org/guide/essentials/history-mode.html
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[6]: https://router.vuejs.org/guide/essentials/history-mode.html#example-server-configurations
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Development
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-----------
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Project setup
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```
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npm install
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```
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Compiles and hot-reloads for development
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```
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npm run serve
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```
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Compiles and minifies for production
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```
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npm run build
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```
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Tests
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-----
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Run your tests
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```
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npm run test
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```
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Lints and fixes files
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```
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npm run lint
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```
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Run your end-to-end tests
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```
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npm run test:e2e
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```
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Run your unit tests
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```
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npm run test:unit
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```
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License
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-------
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Alerta monitoring system and console
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Copyright 2019-2021 Nick Satterly
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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