File hetzner-flatcar-0.6.0.obscpio of Package hetzner-flatcar

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File hetzner-flatcar-0.6.0.obscpio of Package hetzner-flatcar (Revision b7e947881bd7cfb42d46df15d09673b2)

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07070100000000000041ED00000000000000000000000264061F8300000000000000000000000000000000000000000000001E00000000hetzner-flatcar-0.6.0/.github07070100000001000041ED00000000000000000000000264061F8300000000000000000000000000000000000000000000002800000000hetzner-flatcar-0.6.0/.github/workflows07070100000002000081A400000000000000000000000164061F8300000304000000000000000000000000000000000000003400000000hetzner-flatcar-0.6.0/.github/workflows/release.ymlname: goreleaser

on:
  push:
    tags:
      - '*'

permissions:
  contents: write
  packages: write

jobs:
  goreleaser:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v2
        with:
          fetch-depth: 0
      - name: Set up Go
        uses: actions/setup-go@v2
        with:
          go-version: 1.18
      - uses: docker/login-action@v1
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
      - name: Run GoReleaser
        uses: goreleaser/goreleaser-action@v2
        with:
          distribution: goreleaser
          version: latest
          args: release --rm-dist
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
07070100000003000081A400000000000000000000000164061F8300000022000000000000000000000000000000000000002100000000hetzner-flatcar-0.6.0/.gitignorehetzner-flatcar
config.toml
dist/
07070100000004000081A400000000000000000000000164061F83000001E9000000000000000000000000000000000000002700000000hetzner-flatcar-0.6.0/.goreleaser.yamlbefore:
  hooks:
    - go mod tidy
builds:
  - env:
      - CGO_ENABLED=0
    goos:
      - linux
archives:
  - replacements:
      linux: Linux
      386: i386
      amd64: x86_64
checksum:
  name_template: 'checksums.txt'
snapshot:
  name_template: "{{ incpatch .Version }}-next"
changelog:
  sort: asc
  filters:
    exclude:
      - '^docs:'
      - '^test:'
dockers:
  - image_templates:
      - ghcr.io/thor77/hetzner-flatcar:latest
      - ghcr.io/thor77/hetzner-flatcar:{{ .Tag }}
07070100000005000081A400000000000000000000000164061F8300000044000000000000000000000000000000000000002100000000hetzner-flatcar-0.6.0/DockerfileFROM scratch
COPY hetzner-flatcar /
ENTRYPOINT ["/hetzner-flatcar"]
07070100000006000081A400000000000000000000000164061F830000042D000000000000000000000000000000000000001E00000000hetzner-flatcar-0.6.0/LICENSEMIT License

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
07070100000007000081A400000000000000000000000164061F8300001007000000000000000000000000000000000000002000000000hetzner-flatcar-0.6.0/README.md# hetzner-flatcar
A tool to deploy [Flatcar Linux](https://flatcar.og) on Hetzner Cloud.
Includes transpiling of [Container Linux Config](https://www.flatcar.org/docs/latest/provisioning/cl-config/) and reinstalling maschines on changes.

## Build
`go build .`

## Usage
* create a config named `config.toml` with the values described in [configuration](#configuration).
* create a container linux config template, see [template](#template) for details
* `./hetzner-flatcar hostname`

This tool will establish a SSH session to the rescue os to run the flatcar-install script using [goph](https://github.com/melbahja/goph).
For authentication it uses the SSH agent, so ensure the private counterpart to the public key uploaded to Hetzner and referenced in the config is added to your SSH agent.

## Configuration
```toml
[hcloud]
token = "<hetzner cloud token>"
server_type = "cx11"
location = "nbg1"
ssh_key = "<name of ssh key used for rescue and passed to template>"
private_network = "<private network server is attached to>"

[flatcar]
version = "3139.2.0"
config_template = "ignition.yml.gtpl"
# provide path to custom flatcar-install script
# if not provided will be downloaded from
# https://github.com/flatcar-linux/init/blob/flatcar-master/bin/flatcar-install
# install_script = "custom-install-script"
[flatcar.template_static]
nomad_version = "1.2.6"
consul_version = "1.11.4"
```

## Template
The [Container Linux Config](https://github.com/flatcar-linux/container-linux-config-transpiler/blob/flatcar-master/doc/configuration.md) template is rendered using [text/template](https://golang.org/pkg/text/template/) and is given this data:
* `Server` - [Server](https://pkg.go.dev/github.com/hetznercloud/hcloud-go/hcloud#Server) object as returned by Hetzner Cloud API
* `SSHKey` - [SSHKey](https://pkg.go.dev/github.com/hetznercloud/hcloud-go/hcloud#SSHKey) object of the SSH Key used for rescue boot
* `Static` - static data from [config](#configuration) option `flatcar.template_static` as `map[string]string`
* `ReadFile(filename string) (string, error)` - function to read a local file
* `Function(indent int, input string) string` - function to indent strings

Afterwards it's transpiled into a Ignition file.

Take a look at the [example config](doc/example.yml.gtpl) for a minimal example just creating a `core` user with the SSH Key used for rescue boot and setting the hostname to the maschine name.

### injecting local files
The container linux config transpiler supports injecting local files ([ref](https://github.com/flatcar-linux/container-linux-config-transpiler/blob/flatcar-master/config/types/files.go#L177)).
Unfortunately that feature is not usable when not calling it using the CLI, because it relies on the value of a flag to determine the base path to search for files.
As an alternative hetzner-flatcar supports the `ReadFile` template function to inject files into templates.

Example usage:
```
storage:
  files:
    - path: /etc/LICENSE
      filesystem: root
      contents:
        inline: |
{{ call .ReadFile "LICENSE" | call .Indent 12 }}
```

### Custom template command
Instead of using the native go template, you can also use any other command (for example [Helm](https://helm.sh)).
To do that provide your custom command in the configuration option `flatcar.template_command`.
It will get passed the hostname as the first argument and `Server` and `SSHKey` in YAML format on stdin.
```
hetzner:
  server:
    name: ...
  sshkey:
    publickey: ...
```
Example script to render a helm template with a values file based on the hostname:
```sh
#!/bin/sh
cat - common.yaml "${1}.yaml" | yq -y . | helm template ignition -f -
```

## Deployment procedure
1. check whether vm with the name given as first parameter already exists
2. create VM (if not already exists)
3. render container linux config template with data from new or existing VM
4. transpile container linux config into ignition file
5. enable rescue boot on VM
6. Startup or reboot VM (into rescue)
7. upload flatcar-install script and rendered ignition config
8. call flatcar-install and reboot
07070100000008000081A400000000000000000000000164061F83000006E0000000000000000000000000000000000000002000000000hetzner-flatcar-0.6.0/config.gopackage main

import (
	"errors"

"github.com/BurntSushi/toml"
)

type hcloudConfig struct {
	Token             string
	SSHKey            string `toml:"ssh_key"`
	SSHKeyPrivatePath string `toml:"ssh_key_private_path"`
	PrivateNetwork    string `toml:"private_network"`
	ServerType        string `toml:"server_type"`
	Location          string
	Image             string
}

type flatcarConfig struct {
	InstallScript   string `toml:"install_script"`
	InstallArgs     string `toml:"install_args"`
	InstallDevice   string `toml:"install_device"`
	Version         string
	ConfigTemplate  string            `toml:"config_template"`
	TemplateStatic  map[string]string `toml:"template_static"`
	TemplateCommand string            `toml:"template_command"`
}

type config struct {
	HCloud  hcloudConfig
	Flatcar flatcarConfig
}

func verifyConfig(conf *config) error {
	if conf.HCloud.Token == "" {
		return errors.New("hcloud token missing")
	}
	if conf.HCloud.SSHKey == "" {
		return errors.New("ssh key missing")
	}
	if conf.HCloud.PrivateNetwork == "" {
		return errors.New("private network missing")
	}
	if conf.HCloud.ServerType == "" {
		return errors.New("server type missing")
	}
	if conf.HCloud.Location == "" {
		return errors.New("location missing")
	}
	if conf.HCloud.Image == "" {
		conf.HCloud.Image = "debian-11"
	}
	if conf.Flatcar.Version == "" {
		// TODO: set to latest version if not given
		return errors.New("flatcar version missing")
	}
	if conf.Flatcar.ConfigTemplate == "" {
		conf.Flatcar.ConfigTemplate = "ignition.yml.gtpl"
	}
	return nil
}

func ParseConfig(filename string) (config, error) {
	var conf config
	_, err := toml.DecodeFile(filename, &conf)
	if err != nil {
		return conf, err
	}
	err = verifyConfig(&conf)
	return conf, err
}
07070100000009000041ED00000000000000000000000264061F8300000000000000000000000000000000000000000000001A00000000hetzner-flatcar-0.6.0/doc0707010000000A000081A400000000000000000000000164061F83000000D6000000000000000000000000000000000000002B00000000hetzner-flatcar-0.6.0/doc/example.yml.gtplpasswd:
  users:
    - name: core
      ssh_authorized_keys:
        - {{ .SSHKey.PublicKey -}}
storage:
  files:
    - path: /etc/hostname
      filesystem: root
      contents:
        inline: {{ .Server.Name }}
0707010000000B000081A400000000000000000000000164061F8300000606000000000000000000000000000000000000001D00000000hetzner-flatcar-0.6.0/go.modmodule github.com/thor77/hetzner-flatcar

go 1.18

require (
	github.com/BurntSushi/toml v1.2.1
	github.com/flatcar/container-linux-config-transpiler v0.9.4
	github.com/hetznercloud/hcloud-go v1.37.0
	github.com/melbahja/goph v1.3.0
	gopkg.in/yaml.v3 v3.0.1
)

require (
	github.com/ajeddeloh/go-json v0.0.0-20200220154158-5ae607161559 // indirect
	github.com/alecthomas/units v0.0.0-20210208195552-ff826a37aa15 // indirect
	github.com/beorn7/perks v1.0.1 // indirect
	github.com/cespare/xxhash/v2 v2.1.1 // indirect
	github.com/coreos/go-semver v0.3.0 // indirect
	github.com/coreos/go-systemd v0.0.0-20191104093116-d3cd4ed1dbcf // indirect
	github.com/flatcar/ignition v0.36.2 // indirect
	github.com/golang/protobuf v1.4.3 // indirect
	github.com/kr/fs v0.1.0 // indirect
	github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
	github.com/pkg/errors v0.9.1 // indirect
	github.com/pkg/sftp v1.13.4 // indirect
	github.com/prometheus/client_golang v1.11.0 // indirect
	github.com/prometheus/client_model v0.2.0 // indirect
	github.com/prometheus/common v0.26.0 // indirect
	github.com/prometheus/procfs v0.6.0 // indirect
	github.com/vincent-petithory/dataurl v1.0.0 // indirect
	go4.org v0.0.0-20201209231011-d4a079459e60 // indirect
	golang.org/x/crypto v0.0.0-20210921155107-089bfa567519 // indirect
	golang.org/x/net v0.0.0-20210226172049-e18ecbb05110 // indirect
	golang.org/x/sys v0.0.0-20211031064116-611d5d643895 // indirect
	golang.org/x/text v0.3.7 // indirect
	google.golang.org/protobuf v1.26.0-rc.1 // indirect
)
0707010000000C000081A400000000000000000000000164061F8300009C37000000000000000000000000000000000000001D00000000hetzner-flatcar-0.6.0/go.sumcloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU=
cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
cloud.google.com/go v0.45.1/go.mod h1:RpBamKRgapWJb87xiFSdk4g1CME7QZg3uwTez+TSTjc=
cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg0=
cloud.google.com/go v0.50.0/go.mod h1:r9sluTvynVuxRIOHXQEHMFffphuXHOMZMycpNR5e6To=
cloud.google.com/go v0.53.0/go.mod h1:fp/UouUEsRkN6ryDKNW/Upv/JBKnv6WDthjR6+vze6M=
cloud.google.com/go/bigquery v1.0.1/go.mod h1:i/xbL2UlR5RvWAURpBYZTtm/cXjCha9lbfbpx4poX+o=
cloud.google.com/go/bigquery v1.3.0/go.mod h1:PjpwJnslEMmckchkHFfq+HTD2DmtT67aNFKH1/VBDHE=
cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE=
cloud.google.com/go/pubsub v1.0.1/go.mod h1:R0Gpsv3s54REJCy4fxDixWD93lHJMoZTyQ2kNxGRt3I=
cloud.google.com/go/pubsub v1.1.0/go.mod h1:EwwdRX2sKPjnvnqCa270oGRyludottCI76h+R3AArQw=
cloud.google.com/go/storage v1.0.0/go.mod h1:IhtSnM/ZTZV8YYJWCY8RULGVqBDmpoyjwiyrjsg+URw=
cloud.google.com/go/storage v1.5.0/go.mod h1:tpKbwo567HUNpVclU5sGELwQWBDZ8gh0ZeosJ0Rtdos=
dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
github.com/BurntSushi/toml v1.2.1 h1:9F2/+DoOYIOksmaJFPw1tGFy1eDnIJXg+UHjuD8lTak=
github.com/BurntSushi/toml v1.2.1/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=
github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
github.com/ajeddeloh/go-json v0.0.0-20160803184958-73d058cf8437/go.mod h1:otnto4/Icqn88WCcM4bhIJNSgsh9VLBuspyyCfvof9c=
github.com/ajeddeloh/go-json v0.0.0-20200220154158-5ae607161559 h1:4SPQljF/GJ8Q+QlCWMWxRBepub4DresnOm4eI2ebFGc=
github.com/ajeddeloh/go-json v0.0.0-20200220154158-5ae607161559/go.mod h1:otnto4/Icqn88WCcM4bhIJNSgsh9VLBuspyyCfvof9c=
github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
github.com/alecthomas/units v0.0.0-20190924025748-f65c72e2690d/go.mod h1:rBZYJk541a8SKzHPHnH3zbiI+7dagKZ0cgpgrD7Fyho=
github.com/alecthomas/units v0.0.0-20210208195552-ff826a37aa15 h1:AUNCr9CiJuwrRYS3XieqF+Z9B9gNxo/eANAJCF2eiN4=
github.com/alecthomas/units v0.0.0-20210208195552-ff826a37aa15/go.mod h1:OMCwj8VM1Kc9e19TLln2VL61YJF0x1XFtfdL4JdbSyE=
github.com/aws/aws-sdk-go v1.8.39/go.mod h1:ZRmQr0FajVIyZ4ZzBYKG5P3ZqPz9IHG41ZoMu1ADI3k=
github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
github.com/cespare/xxhash/v2 v2.1.1 h1:6MnRN8NT7+YBpUIWxHtefFZOKTAPgGjpQSxqLNn0+qY=
github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
github.com/coreos/go-semver v0.1.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
github.com/coreos/go-semver v0.3.0 h1:wkHLiw0WNATZnSG7epLsujiMCgPAc9xhjJ4tgnAxmfM=
github.com/coreos/go-semver v0.3.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
github.com/coreos/go-systemd v0.0.0-20181031085051-9002847aa142/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
github.com/coreos/go-systemd v0.0.0-20191104093116-d3cd4ed1dbcf h1:iW4rZ826su+pqaw19uhpSCzhj44qo35pNgKFGqzDKkU=
github.com/coreos/go-systemd v0.0.0-20191104093116-d3cd4ed1dbcf/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
github.com/flatcar/container-linux-config-transpiler v0.9.4 h1:yXQ0NB8PeNrKJPrZvbv5/DV63PNhTqt8vaf8YxmX/RA=
github.com/flatcar/container-linux-config-transpiler v0.9.4/go.mod h1:LxanhPvXkWgHG9PrkT4rX/p7YhUPdDGGsUdkNpV3L5U=
github.com/flatcar/ignition v0.36.2 h1:xGHgScUe0P4Fkprjqv7L2CE58emiQgP833OCCn9z2v4=
github.com/flatcar/ignition v0.36.2/go.mod h1:uk1tpzLFRXus4RrvzgMI+IqmmB8a/RGFSBlI+tMTbbA=
github.com/go-gl/glfw v0.0.0-20190409004039-e6da0acd62b1/go.mod h1:vR7hzQXu2zJy9AVAgeJqvqgH9Q5CA+iKCZ2gyEVpxRU=
github.com/go-gl/glfw/v3.3/glfw v0.0.0-20191125211704-12ad95a8df72/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
github.com/go-ini/ini v1.25.4/go.mod h1:ByCAeIL28uOIIG0E3PJtZPDL8WnHpFKFOtgjp+3Ies8=
github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
github.com/go-kit/kit v0.9.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
github.com/go-kit/log v0.1.0/go.mod h1:zbhenjAZHb184qTLMA9ZjW7ThYL0H2mk7Q6pNt4vbaY=
github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE=
github.com/go-logfmt/logfmt v0.4.0/go.mod h1:3RMwSq7FuexP4Kalkev3ejPJsZTpXXBr9+V4qmtdjCk=
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github.com/smartystreets/goconvey v1.7.2/go.mod h1:Vw0tHAZW6lzCRk3xgdin6fKYcG+G3Pg9vgXWeJpQFMM=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
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github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
github.com/vincent-petithory/dataurl v1.0.0 h1:cXw+kPto8NLuJtlMsI152irrVw9fRDX8AbShPRpg2CI=
github.com/vincent-petithory/dataurl v1.0.0/go.mod h1:FHafX5vmDzyP+1CQATJn7WFKc9CvnvxyvZy6I1MrG/U=
github.com/vmware/vmw-guestinfo v0.0.0-20170707015358-25eff159a728/go.mod h1:x9oS4Wk2s2u4tS29nEaDLdzvuHdB19CvSGJjPgkZJNk=
github.com/vmware/vmw-ovflib v0.0.0-20170608004843-1f217b9dc714/go.mod h1:jiPk45kn7klhByRvUq5i2vo1RtHKBHj+iWGFpxbXuuI=
go.opencensus.io v0.21.0/go.mod h1:mSImk1erAIZhrmZN+AvHh14ztQfjbGwt4TtuofqLduU=
go.opencensus.io v0.22.0/go.mod h1:+kGneAE2xo2IficOXnaByMWTGM9T73dGwxeWcUqIpI8=
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golang.org/x/tools v0.0.0-20190328211700-ab21143f2384/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
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google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
google.golang.org/grpc v1.26.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
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google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
google.golang.org/protobuf v1.26.0-rc.1 h1:7QnIQpGRHE5RnLKnESfDoxm2dTapTZua5a0kS0A+VXQ=
google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
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gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
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gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.2.5/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
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gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
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rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
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0707010000000D000081A400000000000000000000000164061F830000340D000000000000000000000000000000000000001E00000000hetzner-flatcar-0.6.0/main.gopackage main

import (
	"bufio"
	"bytes"
	"context"
	"encoding/json"
	"errors"
	"fmt"
	"io/ioutil"
	"log"
	"net"
	"os"
	"os/exec"
	"path/filepath"
	"strings"
	"text/template"
	"time"

clconfig "github.com/flatcar/container-linux-config-transpiler/config"
	"github.com/hetznercloud/hcloud-go/hcloud"
	"github.com/melbahja/goph"
	"gopkg.in/yaml.v3"
)

var installScriptSource = "https://raw.githubusercontent.com/flatcar-linux/init/flatcar-master/bin/flatcar-install"

func transpileConfig(input []byte) (string, error) {
	cfg, pt, report := clconfig.Parse(input)
	if report.IsFatal() {
		return "", errors.New("config parsing failed")
	}
	transpiledConfig, report := clconfig.Convert(cfg, "", pt)
	if report.IsFatal() {
		return "", errors.New("config conversion failed")
	}
	cfgJSON, err := json.Marshal(&transpiledConfig)
	if err != nil {
		return "", err
	}

outFile, err := os.CreateTemp(os.TempDir(), "ignition")
	if err != nil {
		return "", err
	}

if _, err := outFile.Write(cfgJSON); err != nil {
		return "", err
	}
	return outFile.Name(), nil
}

// waitForAction queries the current state of an action every second and waits for it to complete
func waitForAction(actionClient hcloud.ActionClient, action *hcloud.Action) error {
	log.Printf("waiting for action %s to complete\n", action.Command)
	progressChannel, errorChannel := actionClient.WatchProgress(context.Background(), action)
	success := false
	for progress := range progressChannel {
		if progress == 100 {
			success = true
		}
	}
	var err error
	if !success {
		// channel was closed before progress was 100 so there was probably an error
		err = <-errorChannel
	}
	return err
}

type templateData struct {
	Server   hcloud.Server
	SSHKey   hcloud.SSHKey
	Static   map[string]string
	ReadFile func(string) (string, error)
	Indent   func(int, string) string
}

type customTemplateDataHetzner struct {
	Server hcloud.Server
	SSHKey hcloud.SSHKey
}

type customTemplateData struct {
	Hetzner customTemplateDataHetzner
}

func main() {
	// TODO: cli parser...
	if len(os.Args) == 1 {
		fmt.Printf("%s <server name>\n", os.Args[0])
		os.Exit(1)
	}
	cfg, err := ParseConfig("config.toml")
	if err != nil {
		log.Fatalf("error parsing config: %v\n", err)
	}

serverName := os.Args[1]

client := hcloud.NewClient(hcloud.WithToken(cfg.HCloud.Token))

// find ssh key
	sshKeyName := cfg.HCloud.SSHKey
	sshKey, _, err := client.SSHKey.GetByName(context.Background(), sshKeyName)
	if err != nil {
		log.Fatalf("error requesting ssh key: %v\n", err)
	}
	if sshKey == nil {
		log.Fatalf("ssh key %s doesn't exist\n", sshKeyName)
	}

// find private network
	privateNetworkName := cfg.HCloud.PrivateNetwork
	privateNetwork, _, err := client.Network.GetByName(context.Background(), privateNetworkName)
	if err != nil {
		log.Fatalf("error requesting network: %v\n", err)
	}
	if privateNetwork == nil {
		log.Fatalf("network %s doesn't exist\n", privateNetworkName)
	}

serverExists := true
	server, _, err := client.Server.GetByName(context.Background(), serverName)
	if err != nil {
		log.Fatalf("error finding server: %v\n", err)
	}
	if server == nil {
		serverExists = false
	}

if serverExists {
		log.Printf("server '%s' (id %d) already exists, checking for necessary changes\n", serverName, server.ID)
		// check if redeploy is necessary -- fetching user data afterwards not possible, maybe cache locally/connect to server?
		// TODO: check if specification matches
		// TODO: support more than one network?
		// TODO: disable if network doesn't exist / not given
		privateNetworkAttached := false
		for _, attachedPrivateNet := range server.PrivateNet {
			if attachedPrivateNet.Network.ID == privateNetwork.ID {
				privateNetworkAttached = true
				break
			}
		}
		if !privateNetworkAttached {
			// attach to private network
			action, _, err := client.Server.AttachToNetwork(context.Background(), server, hcloud.ServerAttachToNetworkOpts{
				Network: privateNetwork,
			})
			if err != nil {
				log.Fatalf("error request attach to network: %v\n", err)
			}
			if action.Error() != nil {
				log.Fatalf("error attaching server to network: %v\n", action.Error())
			}
			log.Printf("attached server to network %s\n", privateNetworkName)
		}
	} else {
		log.Printf("creating server '%s'", serverName)
		// create server
		startAfterCreate := false
		serverType, _, err := client.ServerType.GetByName(context.Background(), cfg.HCloud.ServerType)
		if err != nil {
			log.Fatalf("error finding server type: %v\n", err)
		}
		image, _, err := client.Image.Get(context.Background(), cfg.HCloud.Image)
		if err != nil {
			log.Fatalf("error finding image: %v\n", err)
		}
		location, _, err := client.Location.GetByName(context.Background(), cfg.HCloud.Location)
		if err != nil {
			log.Fatalf("error finding location: %v\n", err)
		}
		createOpts := hcloud.ServerCreateOpts{
			Name:             serverName,
			StartAfterCreate: &startAfterCreate,
			ServerType:       serverType,
			Image:            image,
			Location:         location,
			SSHKeys:          []*hcloud.SSHKey{sshKey},
			Networks:         []*hcloud.Network{privateNetwork},
		}
		serverCreateResult, _, err := client.Server.Create(context.Background(), createOpts)
		if err != nil {
			log.Fatalf("error creating server: %v\n", err)
		}
		if serverCreateResult.Action.Error() != nil {
			log.Fatalf("error creating server: %v\n", serverCreateResult.Action.Error())
		}

err = waitForAction(client.Action, serverCreateResult.Action)
		if err != nil {
			log.Fatalf("error waiting for action: %v\n", err)
		}

for _, pastCreateAction := range serverCreateResult.NextActions {
			err = waitForAction(client.Action, pastCreateAction)
			if err != nil {
				log.Fatalf("error waiting for action: %v\n", err)
			}
		}

// update server object for templating
		server, _, err = client.Server.GetByID(context.Background(), serverCreateResult.Server.ID)
		if err != nil {
			log.Fatalf("error requesting updated server object: %v\n", err)
		}
	}

var templateContent []byte
	if cfg.Flatcar.TemplateCommand == "" {
		ignitionTemplate := cfg.Flatcar.ConfigTemplate
		log.Printf("rendering ignition config using native template at %s\n", ignitionTemplate)
		buffer := &bytes.Buffer{}
		tmpl, err := template.New(filepath.Base(ignitionTemplate)).ParseFiles(ignitionTemplate)
		if err != nil {
			log.Fatalf("error loading template: %v\n", err)
		}
		err = tmpl.Execute(buffer, templateData{
			Server: *server,
			SSHKey: *sshKey,
			Static: cfg.Flatcar.TemplateStatic,
			ReadFile: func(filename string) (string, error) {
				content, err := ioutil.ReadFile(filename)
				return string(content), err
			},
			Indent: func(indent int, input string) string {
				lines := strings.Split(input, "\n")
				output := make([]string, len(lines))
				indentString := strings.Repeat(" ", indent)
				for i := 0; i < len(output); i++ {
					output[i] = indentString + lines[i]
				}
				return strings.Join(output, "\n")
			},
		})
		if err != nil {
			log.Fatalf("error rendering template: %v\n", err)
		}

templateContent, _ = ioutil.ReadAll(buffer)
	} else {
		log.Printf("rendering ignition config using command '%s'\n", cfg.Flatcar.TemplateCommand)

// marshal template data for passing it to the custom command
		templateData := customTemplateData{
			Hetzner: customTemplateDataHetzner{
				Server: *server,
				SSHKey: *sshKey,
			},
		}
		templateDataYAML, err := yaml.Marshal(templateData)
		if err != nil {
			log.Fatalf("error marshaling hcloud data to yaml: %v\n", err)
		}

// execute custom template command
		tmplCmd := exec.Command(cfg.Flatcar.TemplateCommand, server.Name)
		tmplCmd.Stdin = bytes.NewReader(templateDataYAML)
		templateContent, err = tmplCmd.Output()
		if err != nil {
			log.Println(string(err.(*exec.ExitError).Stderr))
			log.Fatalf("error running template command: %v\n", err)
		}
	}

renderedPath, err := transpileConfig(templateContent)
	if err != nil {
		log.Fatalf("error transpiling config: %v\n", err)
	}

defer func(path string) {
		if err := os.Remove(path); err != nil {
			log.Fatalf("error removing tempfile: %v\n", err)
		}
	}(renderedPath)

// enable rescue boot
	if !server.RescueEnabled {
		log.Println("enabling rescue boot")
		result, _, err := client.Server.EnableRescue(context.Background(), server, hcloud.ServerEnableRescueOpts{
			Type:    hcloud.ServerRescueTypeLinux64,
			SSHKeys: []*hcloud.SSHKey{sshKey},
		})
		if err != nil {
			log.Fatalf("error sending enablerescue request: %v\n", err)
		}
		if result.Action.Error() != nil {
			log.Fatalf("error enabling rescue: %v\n", result.Action.Error())
		}

err = waitForAction(client.Action, result.Action)
		if err != nil {
			log.Fatalf("error waiting for action: %v\n", err)
		}
	}

var action *hcloud.Action
	if server.Status == hcloud.ServerStatusRunning {
		// server is already running, reboot into rescue
		log.Println("server already running, rebooting into rescue for reinstall")
		action, _, err = client.Server.Reboot(context.Background(), server)
	} else {
		log.Printf("powering server on")
		action, _, err = client.Server.Poweron(context.Background(), server)
	}
	if err != nil {
		log.Fatalf("error sending reboot or poweron request: %v\n", err)
	}
	if action.Error() != nil {
		log.Fatalf("error rebooting or powering on server: %v\n", action.Error())
	}

err = waitForAction(client.Action, action)
	if err != nil {
		log.Fatalf("error waiting for action: %v\n", err)
	}

// give the server some time to (re)boot
	log.Println("sleeping 30s to wait for server to (re)boot into rescue")
	time.Sleep(30 * time.Second)

var sshAuth goph.Auth
	if cfg.HCloud.SSHKeyPrivatePath != "" {
		sshAuth, err = goph.Key(cfg.HCloud.SSHKeyPrivatePath, "")
	} else {
		sshAuth, err = goph.UseAgent()
	}
	if err != nil {
		log.Fatalf("error building ssh authentication: %v\n", err)
	}

initialRetries := 30
	retries := 1
	connectionSuccess := false
	retryDelay := 10 * time.Second
	var sshClient *goph.Client
	for retries <= initialRetries {
		// TODO: add option to enable host key checking, will be random, though because rescue always has a different hostkey
		var addr string
		if ip := server.PublicNet.IPv4.IP; ip != nil {
			addr = ip.String()
		} else {
			addr = fmt.Sprintf("%s2", server.PublicNet.IPv6.IP.String())
		}
		// rescue os always uses ::2
		sshClient, err = goph.NewUnknown("root", addr, sshAuth)
		if err == nil {
			connectionSuccess = true
			break
		} else {
			if netError, ok := err.(net.Error); ok {
				log.Printf("retrying network error (%d/%d): %v\n", retries, initialRetries, netError)
				retries++
				time.Sleep(retryDelay)
			} else {
				log.Fatalf("unretriable error while etablishing ssh connection: %v\n", err)
				break
			}
		}
	}

if !connectionSuccess {
		log.Fatalf("ssh connection wasn't successful")
	}

// Defer closing the network connection.
	defer sshClient.Close()

installScriptTarget := "/root/flatcar-install"
	ignitionTarget := "/root/ignition.json"

if cfg.Flatcar.InstallScript != "" {
		err = sshClient.Upload(cfg.Flatcar.InstallScript, installScriptTarget)
		if err != nil {
			log.Fatalf("error uploading flatcar-install script: %v\n", err)
		}
	} else {
		// download install script on remote maschine
		cmd, err := sshClient.Command(fmt.Sprintf("curl -sS -o %s %s", installScriptTarget, installScriptSource))
		if err != nil {
			log.Fatalf("error creating cmd for install script download: %v\n", err)
		}
		err = cmd.Run()
		if err != nil {
			log.Fatalf("error downloading install script: %v\n", err)
		}
	}
	err = sshClient.Upload(renderedPath, ignitionTarget)
	if err != nil {
		log.Fatalf("error uploading ignition file: %v\n", err)
	}

// build flatcar-install command
	var installDeviceArg string
	if cfg.Flatcar.InstallDevice == "" {
		installDeviceArg = "-s"
	} else {
		installDeviceArg = fmt.Sprintf("-d %s", cfg.Flatcar.InstallDevice)
	}
	installCommand := fmt.Sprintf("%s -i %s -V %s %s %s", installScriptTarget, ignitionTarget, cfg.Flatcar.Version, installDeviceArg, cfg.Flatcar.InstallArgs)

// execute commands to finally install flatcar
	commands := []string{
		"apt update",
		"apt install -y gawk",
		fmt.Sprintf("chmod +x %s", installScriptTarget),
		installCommand,
	}
	for _, command := range commands {
		log.Printf("running command '%s'\n", command)
		cmd, err := sshClient.Command(command)
		if err != nil {
			log.Fatalf("error creating goph.Cmd for '%s': %v\n", command, err)
		}
		stdoutPipe, err := cmd.StdoutPipe()
		if err != nil {
			log.Fatalf("error creating stdoutpipe for '%s': %v\n", command, err)
		}
		go func() {
			// TODO: don't print this if not desired
			scanner := bufio.NewScanner(stdoutPipe)
			for scanner.Scan() {
				log.Printf("%s - %s", command, scanner.Text())
			}
		}()
		err = cmd.Run()
		if err != nil {
			log.Fatalf("error running command '%s': %v\n", command, err)
		}
	}

// run reboot command
	cmd, err := sshClient.Command("reboot now")
	if err != nil {
		log.Fatalf("error creating goph.Cmd for reboot command: %v\n", err)
	}
	err = cmd.Run()
	if err != nil {
		log.Printf("reboot command failed, VM probably rebooted anyways: %v\n", err)
	}

log.Println("------")
	log.Printf("successfully (re)installed %s, ID: %d IPv4: %s IPv6: %s\n", server.Name, server.ID, server.PublicNet.IPv4.IP.String(), server.PublicNet.IPv6.IP.String())
}
07070100000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000B00000000TRAILER!!!129 blocks

Places

File hetzner-flatcar-0.6.0.obscpio of Package hetzner-flatcar (Revision b7e947881bd7cfb42d46df15d09673b2)

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