func export(c *cli.Context) error {
content, err := config.Export(c.Bool("private"), c.Bool("full"))
if err != nil {
log.Fatal(err)
}
output := c.String("output")
if output == "" {
fmt.Println(content)
} else {
err := util.WriteFileAtomic(output, []byte(content), 0400)
if err != nil {
log.Fatal(err)
}
}
return nil
}
func RunInit() error {
os.Setenv("PATH", "/sbin:/usr/sbin:/usr/bin")
if isInitrd() {
log.Debug("Booting off an in-memory filesystem")
// Magic setting to tell Docker to do switch_root and not pivot_root
os.Setenv("DOCKER_RAMDISK", "true")
} else {
log.Debug("Booting off a persistent filesystem")
}
initFuncs := []config.CfgFunc{
func(c *config.CloudConfig) (*config.CloudConfig, error) {
return c, dockerlaunch.PrepareFs(&mountConfig)
},
mountOem,
func(_ *config.CloudConfig) (*config.CloudConfig, error) {
cfg := config.LoadConfig()
if cfg.Rancher.Debug {
cfgString, err := config.Export(false, true)
if err != nil {
log.WithFields(log.Fields{"err": err}).Error("Error serializing config")
} else {
log.Debugf("Config: %s", cfgString)
}
}
return cfg, nil
},
loadModules,
tryMountAndBootstrap,
func(_ *config.CloudConfig) (*config.CloudConfig, error) {
return config.LoadConfig(), nil
},
loadModules,
func(c *config.CloudConfig) (*config.CloudConfig, error) {
return c, dockerlaunch.PrepareFs(&mountConfig)
},
func(c *config.CloudConfig) (*config.CloudConfig, error) {
network.SetProxyEnvironmentVariables(c)
return c, nil
},
initializeSelinux,
setupSharedRoot,
sysInit,
}
cfg, err := config.ChainCfgFuncs(nil, initFuncs...)
if err != nil {
return err
}
launchConfig, args := getLaunchConfig(cfg, &cfg.Rancher.SystemDocker)
launchConfig.Fork = !cfg.Rancher.SystemDocker.Exec
log.Info("Launching System Docker")
_, err = dockerlaunch.LaunchDocker(launchConfig, config.SYSTEM_DOCKER_BIN, args...)
if err != nil {
return err
}
return pidOne()
}