Recovery console

init/recovery.go

@@ -0,0 +1,90 @@
+package init
+
+import (
+	log "github.com/Sirupsen/logrus"
+	composeConfig "github.com/docker/libcompose/config"
+	"github.com/docker/libcompose/yaml"
+	"github.com/rancher/os/compose"
+	"github.com/rancher/os/config"
+)
+
+var (
+	recoveryDockerService = composeConfig.ServiceConfigV1{
+		Image: config.OsBase,
+		Command: yaml.Command{
+			"ros",
+			"recovery-init",
+		},
+		Labels: map[string]string{
+			config.DetachLabel: "false",
+			config.ScopeLabel:  "system",
+		},
+		LogDriver:  "json-file",
+		Net:        "host",
+		Uts:        "host",
+		Pid:        "host",
+		Ipc:        "host",
+		Privileged: true,
+		Volumes: []string{
+			"/dev:/host/dev",
+			"/etc/ssl/certs/ca-certificates.crt:/etc/ssl/certs/ca-certificates.crt.rancher",
+			"/lib/modules:/lib/modules",
+			"/lib/firmware:/lib/firmware",
+			"/usr/bin/ros:/usr/bin/ros:ro",
+			"/usr/bin/ros:/usr/bin/cloud-init-save",
+			"/usr/bin/ros:/usr/bin/respawn:ro",
+			"/usr/share/ros:/usr/share/ros:ro",
+			"/var/lib/rancher:/var/lib/rancher",
+			"/var/lib/rancher/conf:/var/lib/rancher/conf",
+		},
+	}
+)
+
+func recoveryServices(cfg *config.CloudConfig) (*config.CloudConfig, error) {
+	_, err := compose.RunServiceSet("recovery", cfg, map[string]*composeConfig.ServiceConfigV1{
+		"recovery": &recoveryDockerService,
+	})
+	return nil, err
+}
+
+func recovery(initFailure error) {
+	if initFailure != nil {
+		log.Errorf("RancherOS has failed to boot: %v", initFailure)
+	}
+	log.Info("Launching recovery console")
+
+	var recoveryConfig config.CloudConfig
+	recoveryConfig.Rancher.Defaults = config.Defaults{
+		Network: config.NetworkConfig{
+			DNS: config.DNSConfig{
+				Nameservers: []string{
+					"8.8.8.8",
+					"8.8.4.4",
+				},
+			},
+		},
+	}
+	recoveryConfig.Rancher.BootstrapDocker = config.DockerConfig{
+		EngineOpts: config.EngineOpts{
+			Bridge:        "none",
+			StorageDriver: "overlay",
+			Restart:       &[]bool{false}[0],
+			Graph:         "/var/lib/recovery-docker",
+			Group:         "root",
+			Host:          []string{"unix:///var/run/system-docker.sock"},
+			UserlandProxy: &[]bool{false}[0],
+		},
+	}
+
+	_, err := startDocker(&recoveryConfig)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	_, err = config.ChainCfgFuncs(&recoveryConfig,
+		loadImages,
+		recoveryServices)
+	if err != nil {
+		log.Fatal(err)
+	}
+}