func RunInit() error {
var cfg config.CloudConfig
os.Setenv("PATH", "/sbin:/usr/sbin:/usr/bin")
// Magic setting to tell Docker to do switch_root and not pivot_root
os.Setenv("DOCKER_RAMDISK", "true")
initFuncs := []config.InitFunc{
func(cfg *config.CloudConfig) error {
return dockerlaunch.PrepareFs(&mountConfig)
},
func(cfg *config.CloudConfig) error {
newCfg, err := config.LoadConfig()
if err == nil {
newCfg, err = config.LoadConfig()
}
if err == nil {
*cfg = *newCfg
}
if cfg.Rancher.Debug {
cfgString, err := config.Dump(false, true)
if err != nil {
log.WithFields(log.Fields{"err": err}).Error("Error serializing config")
} else {
log.Debugf("Config: %s", cfgString)
}
}
return err
},
loadModules,
tryMountAndBootstrap,
func(cfg *config.CloudConfig) error {
return cfg.Reload()
},
loadModules,
sysInit,
}
if err := config.RunInitFuncs(&cfg, initFuncs); err != nil {
return err
}
launchConfig, args := getLaunchConfig(&cfg, &cfg.Rancher.SystemDocker)
log.Info("Launching System Docker")
_, err := dockerlaunch.LaunchDocker(launchConfig, config.DOCKER_BIN, args...)
return err
}
func bootstrap(cfg *config.Config) error {
log.Info("Starting bootstrap")
c, err := startDocker(cfg)
if err != nil {
return err
}
initFuncs := []config.InitFunc{
loadImages,
runBootstrapContainers,
autoformat,
}
defer stopDocker(c)
return config.RunInitFuncs(cfg, initFuncs)
}
func SysInit() error {
cfg, err := config.LoadConfig()
if err != nil {
return err
}
initFuncs := []config.InitFunc{
loadImages,
runContainers,
func(cfg *config.Config) error {
syscall.Sync()
return nil
},
func(cfg *config.Config) error {
log.Infof("RancherOS %s started", config.VERSION)
return nil
},
tailConsole,
}
return config.RunInitFuncs(cfg, initFuncs)
}
func SysInit() error {
cfg, err := config.LoadConfig()
if err != nil {
return err
}
initFuncs := []config.InitFunc{
loadImages,
func(cfg *config.CloudConfig) error {
return compose.RunServices(cfg)
},
func(cfg *config.CloudConfig) error {
syscall.Sync()
return nil
},
func(cfg *config.CloudConfig) error {
log.Infof("RancherOS %s started", config.VERSION)
return nil
},
}
return config.RunInitFuncs(cfg, initFuncs)
}
func RunInit() error {
var cfg config.Config
os.Setenv("PATH", "/sbin:/usr/sbin:/usr/bin")
os.Setenv("DOCKER_RAMDISK", "true")
initFuncs := []config.InitFunc{
func(cfg *config.Config) error {
return createDirs(dirs...)
},
func(cfg *config.Config) error {
log.Info("Setting up mounts")
return createMounts(mounts...)
},
func(cfg *config.Config) error {
newCfg, err := config.LoadConfig()
if err == nil {
newCfg, err = config.LoadConfig()
}
if err == nil {
*cfg = *newCfg
}
if cfg.Debug {
cfgString, _ := config.Dump(false, true)
if cfgString != "" {
log.Debugf("Config: %s", cfgString)
}
}
return err
},
mountCgroups,
func(cfg *config.Config) error {
return createSymlinks(cfg, symlinks)
},
createGroups,
extractModules,
loadModules,
setResolvConf,
setupSystemBridge,
bootstrap,
mountState,
func(cfg *config.Config) error {
return cfg.Reload()
},
loadModules,
setResolvConf,
func(cfg *config.Config) error {
return createDirs(postDirs...)
},
func(cfg *config.Config) error {
return createMounts(postMounts...)
},
touchSocket,
// Disable R/O root write now to support updating modules
//remountRo,
sysInit,
}
if err := config.RunInitFuncs(&cfg, initFuncs); err != nil {
return err
}
return execDocker(&cfg)
}