Fix errors when ucp/engine is missing during reset (#108)

Signed-off-by: Jari Kolehmainen <[email protected]>

pkg/phase/uninstall_engine.go

@@ -21,8 +21,13 @@ func (p *UninstallEngine) Run(c *api.ClusterConfig) error {
 }
 
 func (p *UninstallEngine) uninstallEngine(host *api.Host, c *api.ClusterConfig) error {
+	err := host.Exec(host.Configurer.DockerCommandf("info"))
+	if err != nil {
+		log.Infof("%s: engine not installed, skipping", host.Address)
+		return nil
+	}
 	log.Infof("%s: uninstalling engine", host.Address)
-	err := host.Configurer.UninstallEngine(&c.Spec.Engine)
+	err = host.Configurer.UninstallEngine(&c.Spec.Engine)
 	if err == nil {
 		log.Infof("%s: engine uninstalled", host.Address)
 	}

pkg/phase/uninstall_ucp.go

@@ -5,6 +5,7 @@ import (
 
 	api "github.com/Mirantis/mcc/pkg/apis/v1beta1"
 	"github.com/Mirantis/mcc/pkg/swarm"
+	log "github.com/sirupsen/logrus"
 )
 
 // UninstallUCP is the phase implementation for running UCP uninstall
@@ -20,6 +21,10 @@ func (p *UninstallUCP) Title() string {
 // Run the installer container
 func (p *UninstallUCP) Run(config *api.ClusterConfig) error {
 	swarmLeader := config.Spec.SwarmLeader()
+	if !config.Spec.Ucp.Metadata.Installed {
+		log.Infof("%s: UCP is not installed, skipping", swarmLeader.Address)
+		return nil
+	}
 
 	image := fmt.Sprintf("%s/ucp:%s", config.Spec.Ucp.ImageRepo, config.Spec.Ucp.Version)
 	args := fmt.Sprintf("--id %s", swarm.ClusterID(swarmLeader))