provs/README.md
2024-08-16 17:31:12 +02:00

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# provs
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## Purpose
provs provides cli-based tools for
* provisioning desktop software for different desktop types:
* basic
* office
* IDE
* provisioning a k3s server
* performing system checks
Tasks can be run locally or remotely.
## Try out
### Prerequisites
* A **Java Virtual machine** (JVM) is required.
* Install `jarwrapper` (e.g. `sudo apt install jarwrapper`)
* Then either download the binaries or build them yourself
#### Download the binaries
* Download the latest `provs-desktop.jar`,`provs-server.jar` and/or `provs-syspec.jar` from: https://gitlab.com/domaindrivenarchitecture/provs/-/releases
* Preferably into `/usr/local/bin` or any other folder where executables can be found by the system
* Make the jar-file executable e.g. by `chmod +x provs-desktop.jar`
* Check with `provs-desktop.jar -h` to show help information
###### Build the binaries
Instead of downloading the binaries you can build them yourself
* Clone this repository
* In the repository's root folder execute: `./gradlew install`. This will install the binaries in `/usr/local/bin`
### Provision a desktop
After having installed `provs-desktop.jar` (see prerequisites) execute:
`provs-desktop.jar <type> <target> [<options>]`
**type** can be:
* basic - install some basic packages)
* office - install office software (LibreOffice), E-Mail (Thunderbird), etc
* ide - same as office with additionally ide-software (VSCode, IntelliJ, etc)
**target** can be:
* `local`
* remote, e.g. `user123:mypassword@myhost.com` - general format is: <user[:password]@host> -
* be sure to have openssh-server installed
* add your preferred public key to known_hosts on the target machine
* if password is omitted, then ssh-keys will be used for authentication
* if password is omitted but option `-p` is provided, then the password will be prompted interactively
**options**
* `-p` for interactive password question
* `-o` for only executing one action, e.g.
* `-o verify` for verifying your installation
* `-o firefox` to install firefox from apt on ubuntu
#### Example
```bash
provs-desktop.jar basic local # installs a basic desktop on a local machine
provs-desktop.jar office myuser@myhost.com -p # installs an office desktop on a remote machine, prompting for password
provs-desktop.jar ide myuser@myhost.com # installs an ide on a local machine
provs-desktop.jar ide myuser@myhost.com -o firefox # installs firefox on a remote machine
provs-desktop.jar ide myuser@myhost.com -o verify # verifies the installation on a remote machine
```
### Provision a k3s Server
```bash
provs-server.jar k3s local # installs a k3s server locally
provs-server.jar k3s myuser@myhost.com # install remote k3s using ssh-authentication // option -p for password authentication
provs-server.jar k3s myuser@myhost.com -c path/to/k3sServerConfig.yaml -a path/to/application.yaml # as above, but define paths to your application and config yamls
```
For the remote server please configure a config file (default file name: server-config.yaml).
It has to be in the same folder where you execute the provs-server.jar command.
```yaml
fqdn: "myhostname.com"
node:
ipv4: "192.168.56.123" # ip address
echo: true # for demo reasons only - deploys an echo app
```
To add a grafana agent to your k3s installation add the following to the config:
```yaml
grafana:
user: "myusername" # username for the grafana data source
password:
source: "PLAIN" # PLAIN, GOPASS or PROMPT
parameter: "mypassword" # the password or api key for the grafana data source user
cluster: "mycluster" # a cluster name of your choice
```
To provision the grafana agent only to an existing k8s system, ensure that the config (as above) is available and execute:
```bash
provs-server.jar k3s myuser@myhost.com -o grafana
```
To add the hetzner csi driver and encrypted volumes to your k3s installation add the following to the config:
```yaml
hetzner:
hcloudApiToken:
source: "PLAIN" # PLAIN, GOPASS or PROMPT
parameter: "mypassword" # the api key for the hetzner cloud
encryptionPassphrase:
source: "PLAIN" # PLAIN, GOPASS or PROMPT
parameter: "mypassword" # the encryption passphrase for created volumes
```
To provision the grafana agent only to an existing k8s system, ensure that the config (as above) is available and execute:
```bash
provs-server.jar k3s myuser@myhost.com -o grafana
```
Reprovisioning the server can easily be done using the -r or --reprovision option.
```bash
provs-server.jar k3s myuser@myhost.com -c path/to/k3sServerConfig.yaml -a path/to/application.yaml -r #
```
Or you can add `reprovision: true` to your k3sServerConfig.yaml.
### Perform a system check
The default config-file for the system check is `syspec-config.yaml`, you can specify a different file with option `-c <config-file>`.
```bash
provs-syspec.jar local
# or remote with a custom config filename
provs-syspec.jar myuser@myhost.com -c my-syspec-config.yaml
```
Example output:
![Syspec output example](doc/resources/syspec-output-example.jpg "Syspec output example")
## Get help
To get help you can make use of the `-h` option:
```bash
provs-desktop.jar -h
provs-server.jar -h
provs-syspec.jar -h
```
Or to get help for subcommands e.g.
```bash
provs-desktop.jar ide -h
provs-server.jar k3s -h
```
## Development & mirrors
Development happens at: https://repo.prod.meissa.de/meissa/provs
Mirrors are:
* https://gitlab.com/domaindrivenarchitecture/provs (CI issues and PR)
* https://github.com/DomainDrivenArchitecture/provs
For more details about our repository model see: https://repo.prod.meissa.de/meissa/federate-your-repos
## Developer information
For using provs framework, add the required dependency to your project, then you can implement your own tasks e.g. by:
```kotlin
import org.domaindrivenarchitecture.provs.framework.core.Prov
fun Prov.myCustomTask() = task {
cmd("echo \"Hello world!\"")
}
```
See also [ForDevelopers.md](doc/ForDevelopers.md)