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RancherOS provisioner, tested with VirtualBox and AWS Signed-off-by: Darren Shepherd <darren@rancher.com>
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package provision | ||
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import ( | ||
"bufio" | ||
"fmt" | ||
"net/http" | ||
"strings" | ||
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"github.com/docker/machine/drivers" | ||
"github.com/docker/machine/libmachine/auth" | ||
"github.com/docker/machine/libmachine/engine" | ||
"github.com/docker/machine/libmachine/provision/pkgaction" | ||
"github.com/docker/machine/libmachine/swarm" | ||
"github.com/docker/machine/log" | ||
"github.com/docker/machine/state" | ||
"github.com/docker/machine/utils" | ||
) | ||
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const ( | ||
versionsUrl = "http://releases.rancher.com/os/versions.yml" | ||
isoUrl = "https://github.com/rancherio/os/releases/download/%s/machine-rancheros.iso" | ||
hostnameTmpl = `sudo mkdir -p /var/lib/rancher/conf/cloud-config.d/ | ||
sudo tee /var/lib/rancher/conf/cloud-config.d/machine-hostname.yml << EOF | ||
#cloud-config | ||
hostname: %s | ||
EOF | ||
` | ||
) | ||
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func init() { | ||
Register("RancherOS", &RegisteredProvisioner{ | ||
New: NewRancherProvisioner, | ||
}) | ||
} | ||
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func NewRancherProvisioner(d drivers.Driver) Provisioner { | ||
return &RancherProvisioner{ | ||
GenericProvisioner{ | ||
DockerOptionsDir: "/var/lib/rancher/conf", | ||
DaemonOptionsFile: "/var/lib/rancher/conf/docker", | ||
OsReleaseId: "rancheros", | ||
Driver: d, | ||
}, | ||
} | ||
} | ||
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type RancherProvisioner struct { | ||
GenericProvisioner | ||
} | ||
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func (provisioner *RancherProvisioner) Service(name string, action pkgaction.ServiceAction) error { | ||
command := fmt.Sprintf("sudo system-docker %s %s", action.String(), name) | ||
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if _, err := provisioner.SSHCommand(command); err != nil { | ||
return err | ||
} | ||
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return nil | ||
} | ||
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func (provisioner *RancherProvisioner) Package(name string, action pkgaction.PackageAction) error { | ||
var packageAction string | ||
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if name == "docker" && action == pkgaction.Upgrade { | ||
return provisioner.upgrade() | ||
} | ||
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switch action { | ||
case pkgaction.Install: | ||
packageAction = "enabled" | ||
case pkgaction.Remove: | ||
packageAction = "disable" | ||
case pkgaction.Upgrade: | ||
// TODO: support upgrade | ||
packageAction = "upgrade" | ||
} | ||
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command := fmt.Sprintf("sudo rancherctl service %s %s", packageAction, name) | ||
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if _, err := provisioner.SSHCommand(command); err != nil { | ||
return err | ||
} | ||
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return nil | ||
} | ||
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func (provisioner *RancherProvisioner) Provision(swarmOptions swarm.SwarmOptions, authOptions auth.AuthOptions, engineOptions engine.EngineOptions) error { | ||
provisioner.SwarmOptions = swarmOptions | ||
provisioner.AuthOptions = authOptions | ||
provisioner.EngineOptions = engineOptions | ||
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if provisioner.EngineOptions.StorageDriver != "overlay" { | ||
log.Warnf("Unsupported storage driver %s, using overlay", provisioner.EngineOptions.StorageDriver) | ||
provisioner.EngineOptions.StorageDriver = "overlay" | ||
} | ||
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log.Debugf("Setting hostname %s", provisioner.Driver.GetMachineName()) | ||
if err := provisioner.SetHostname(provisioner.Driver.GetMachineName()); err != nil { | ||
return err | ||
} | ||
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for _, pkg := range provisioner.Packages { | ||
log.Debugf("Installing package %s", pkg) | ||
if err := provisioner.Package(pkg, pkgaction.Install); err != nil { | ||
return err | ||
} | ||
} | ||
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log.Debugf("Preparing certificates") | ||
provisioner.AuthOptions = setRemoteAuthOptions(provisioner) | ||
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log.Debugf("Setting up certificates") | ||
if err := ConfigureAuth(provisioner); err != nil { | ||
return err | ||
} | ||
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log.Debugf("Configuring swarm") | ||
if err := configureSwarm(provisioner, swarmOptions); err != nil { | ||
return err | ||
} | ||
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return nil | ||
} | ||
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func (provisioner *RancherProvisioner) SetHostname(hostname string) error { | ||
// /etc/hosts is bind mounted from Docker, this is hack to that the generic provisioner doesn't try to mv /etc/hosts | ||
if _, err := provisioner.SSHCommand("sed /127.0.1.1/d /etc/hosts > /tmp/hosts && cat /tmp/hosts | sudo tee /etc/hosts"); err != nil { | ||
return err | ||
} | ||
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if err := provisioner.GenericProvisioner.SetHostname(hostname); err != nil { | ||
return err | ||
} | ||
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if _, err := provisioner.SSHCommand(fmt.Sprintf(hostnameTmpl, hostname)); err != nil { | ||
return err | ||
} | ||
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return nil | ||
} | ||
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func (provisioner *RancherProvisioner) upgrade() error { | ||
switch provisioner.Driver.DriverName() { | ||
case "virtualbox": | ||
return provisioner.upgradeIso() | ||
default: | ||
log.Infof("Running upgrade") | ||
if _, err := provisioner.SSHCommand("sudo rancherctl os upgrade -f --no-reboot"); err != nil { | ||
return err | ||
} | ||
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log.Infof("Upgrade succeeded, rebooting") | ||
// ignore errors here because the SSH connection will close | ||
provisioner.SSHCommand("sudo reboot") | ||
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return nil | ||
} | ||
} | ||
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func (provisioner *RancherProvisioner) upgradeIso() error { | ||
// Largely copied from Boot2Docker provisioner, we should find a way to share this code | ||
log.Info("Stopping machine to do the upgrade...") | ||
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if err := provisioner.Driver.Stop(); err != nil { | ||
return err | ||
} | ||
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if err := utils.WaitFor(drivers.MachineInState(provisioner.Driver, state.Stopped)); err != nil { | ||
return err | ||
} | ||
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machineName := provisioner.GetDriver().GetMachineName() | ||
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log.Infof("Upgrading machine %s...", machineName) | ||
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b2dutils := utils.NewB2dUtils("", "") | ||
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url, err := provisioner.getLatestISOURL() | ||
if err != nil { | ||
return err | ||
} | ||
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if err := b2dutils.DownloadISOFromURL(url); err != nil { | ||
return err | ||
} | ||
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// Copy the latest version of boot2docker ISO to the machine's directory | ||
if err := b2dutils.CopyIsoToMachineDir("", machineName); err != nil { | ||
return err | ||
} | ||
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log.Infof("Starting machine back up...") | ||
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if err := provisioner.Driver.Start(); err != nil { | ||
return err | ||
} | ||
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return utils.WaitFor(drivers.MachineInState(provisioner.Driver, state.Running)) | ||
} | ||
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func (provisioner *RancherProvisioner) getLatestISOURL() (string, error) { | ||
log.Debugf("Reading %s", versionsUrl) | ||
resp, err := http.Get(versionsUrl) | ||
if err != nil { | ||
return "", err | ||
} | ||
defer resp.Body.Close() | ||
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// Don't want to pull in yaml parser, we'll do this manually | ||
scanner := bufio.NewScanner(resp.Body) | ||
for scanner.Scan() { | ||
line := scanner.Text() | ||
if strings.HasPrefix(line, "current: ") { | ||
log.Debugf("Found %s", line) | ||
return fmt.Sprintf(isoUrl, strings.Split(line, ":")[2]), err | ||
} | ||
} | ||
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return "", fmt.Errorf("Failed to find current version") | ||
} |
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