Skip to content
This repository has been archived by the owner on Sep 26, 2021. It is now read-only.

Add support for Fedora CoreOS #4808

Open
wants to merge 2 commits into
base: master
Choose a base branch
from
Open
Show file tree
Hide file tree
Changes from all commits
Commits
File filter

Filter by extension

Filter by extension

Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
6 changes: 6 additions & 0 deletions libmachine/provision/fedora.go
Original file line number Diff line number Diff line change
Expand Up @@ -23,3 +23,9 @@ type FedoraProvisioner struct {
func (provisioner *FedoraProvisioner) String() string {
return "fedora"
}

func (provisioner *FedoraProvisioner) CompatibleWithHost() bool {
isFedora := provisioner.OsReleaseInfo.ID == "fedora"
isCoreOS := provisioner.OsReleaseInfo.VariantID == "coreos"
return isFedora && !isCoreOS
}
137 changes: 137 additions & 0 deletions libmachine/provision/fedora_coreos.go
Original file line number Diff line number Diff line change
@@ -0,0 +1,137 @@
package provision

import (
"bytes"
"fmt"
"text/template"

"github.com/docker/machine/libmachine/auth"
"github.com/docker/machine/libmachine/drivers"
"github.com/docker/machine/libmachine/engine"
"github.com/docker/machine/libmachine/log"
"github.com/docker/machine/libmachine/provision/pkgaction"
"github.com/docker/machine/libmachine/swarm"
)

func init() {
Register("Fedora", &RegisteredProvisioner{
New: NewFedoraCoreOSProvisioner,
})
}

// NewFedoraCoreOSProvisioner creates a new provisioner for a driver
func NewFedoraCoreOSProvisioner(d drivers.Driver) Provisioner {
return &FedoraCoreOSProvisioner{
NewSystemdProvisioner("fedora", d),
}
}

// FedoraCoreOSProvisioner is a provisioner based on the CoreOS provisioner
type FedoraCoreOSProvisioner struct {
SystemdProvisioner
}

// String returns the name of the provisioner
func (provisioner *FedoraCoreOSProvisioner) String() string {
return "Fedora CoreOS"
}

// SetHostname sets the hostname of the remote machine
func (provisioner *FedoraCoreOSProvisioner) SetHostname(hostname string) error {
log.Debugf("SetHostname: %s", hostname)

command := fmt.Sprintf("sudo hostnamectl set-hostname %s", hostname)
if _, err := provisioner.SSHCommand(command); err != nil {
return err
}

return nil
}

// GenerateDockerOptions formats a systemd drop-in unit which adds support for
// Docker Machine
func (provisioner *FedoraCoreOSProvisioner) GenerateDockerOptions(dockerPort int) (*DockerOptions, error) {
var (
engineCfg bytes.Buffer
)

driverNameLabel := fmt.Sprintf("provider=%s", provisioner.Driver.DriverName())
provisioner.EngineOptions.Labels = append(provisioner.EngineOptions.Labels, driverNameLabel)

engineConfigTmpl := `[Service]
Environment=TMPDIR=/var/tmp
ExecStart=
ExecStart=/usr/bin/dockerd \
--exec-opt native.cgroupdriver=systemd \
--host=unix:///var/run/docker.sock \
--host=tcp://0.0.0.0:{{.DockerPort}} \
--tlsverify \
--tlscacert {{.AuthOptions.CaCertRemotePath}} \
--tlscert {{.AuthOptions.ServerCertRemotePath}} \
--tlskey {{.AuthOptions.ServerKeyRemotePath}}{{ range .EngineOptions.Labels }} \
--label {{.}}{{ end }}{{ range .EngineOptions.InsecureRegistry }} \
--insecure-registry {{.}}{{ end }}{{ range .EngineOptions.RegistryMirror }} \
--registry-mirror {{.}}{{ end }}{{ range .EngineOptions.ArbitraryFlags }} \
--{{.}}{{ end }} \$OPTIONS \$DOCKER_OPTS \$DOCKER_OPT_BIP \$DOCKER_OPT_MTU \$DOCKER_OPT_IPMASQ
Environment={{range .EngineOptions.Env}}{{ printf "%q" . }} {{end}}
`

t, err := template.New("engineConfig").Parse(engineConfigTmpl)
if err != nil {
return nil, err
}

engineConfigContext := EngineConfigContext{
DockerPort: dockerPort,
AuthOptions: provisioner.AuthOptions,
EngineOptions: provisioner.EngineOptions,
}

t.Execute(&engineCfg, engineConfigContext)

return &DockerOptions{
EngineOptions: engineCfg.String(),
EngineOptionsPath: provisioner.DaemonOptionsFile,
}, nil
}

// CompatibleWithHost returns whether or not this provisoner is compatible
// with the target host
func (provisioner *FedoraCoreOSProvisioner) CompatibleWithHost() bool {
isFedora := provisioner.OsReleaseInfo.ID == "fedora"
isCoreOS := provisioner.OsReleaseInfo.VariantID == "coreos"
return isFedora && isCoreOS
}

// Package installs a package on the remote host. The Fedora CoreOS provisioner
// does not support (or need) any package installation
func (provisioner *FedoraCoreOSProvisioner) Package(name string, action pkgaction.PackageAction) error {
return nil
}

// Provision provisions the machine
func (provisioner *FedoraCoreOSProvisioner) Provision(swarmOptions swarm.Options, authOptions auth.Options, engineOptions engine.Options) error {
provisioner.SwarmOptions = swarmOptions
provisioner.AuthOptions = authOptions
provisioner.EngineOptions = engineOptions

if err := provisioner.SetHostname(provisioner.Driver.GetMachineName()); err != nil {
return err
}

if err := makeDockerOptionsDir(provisioner); err != nil {
return err
}

log.Debugf("Preparing certificates")
provisioner.AuthOptions = setRemoteAuthOptions(provisioner)

log.Debugf("Setting up certificates")
if err := ConfigureAuth(provisioner); err != nil {
return err
}

log.Debug("Configuring swarm")
err := configureSwarm(provisioner, swarmOptions, provisioner.AuthOptions)
return err
}