PRODENG-2789 don't validate MCR version

- we no longer validate installed MCR version compared to config spec version string
- make the EnsureMCR function responsible for updating metadata (simplify, dedup)

WHY?

MCR versions installed no longer match the spec string, so we can't tell if the version
installed was the expected version, nor can we tell if there is a newer version that
can be installed, so we always run the install script, and never test
version.

Signed-off-by: James Nesbitt <[email protected]>

pkg/mcr/mcr.go

@@ -3,11 +3,14 @@ package mcr
 import (
 	"fmt"
 
-	"github.com/Mirantis/mcc/pkg/constant"
 	"github.com/Mirantis/mcc/pkg/product/mke/api"
+	log "github.com/sirupsen/logrus"
 )
 
-func EnsureMCRVersion(h *api.Host, specMcrVersion string) error {
+// EnsureMCRVersion ensure that MCR is running after install/upgrade, and update the host information
+// @NOTE will reboot the machine if MCR isn't detected, and MCR can be force restarted if desired (I could drop the mcr restart, but I kept it in case we want a run-time flag for it.)
+// @SEE PRODENG-2789 : we no longer perform version checks, as the MCR versions don't always match the spec string.
+func EnsureMCRVersion(h *api.Host, specMcrVersion string, forceMCRRestart bool) error {
 	currentVersion, err := h.MCRVersion()
 	if err != nil {
 		if err := h.Reboot(); err != nil {
@@ -17,8 +20,7 @@ func EnsureMCRVersion(h *api.Host, specMcrVersion string) error {
 		if err != nil {
 			return fmt.Errorf("%s: failed to query container runtime version after installation: %w", h, err)
 		}
-	}
-	if currentVersion != specMcrVersion {
+	} else if !forceMCRRestart {
 		err = h.Configurer.RestartMCR(h)
 		if err != nil {
 			return fmt.Errorf("%s: failed to restart container runtime: %w", h, err)
@@ -28,8 +30,10 @@ func EnsureMCRVersion(h *api.Host, specMcrVersion string) error {
 			return fmt.Errorf("%s: failed to query container runtime version after restart: %w", h, err)
 		}
 	}
-	if currentVersion != specMcrVersion {
-		return fmt.Errorf("%s: %w: container runtime version not %s after upgrade", h, constant.ErrVersionMismatch, specMcrVersion)
-	}
+
+	log.Infof("%s: mirantis container runtime version %s (requested:%s)", h, currentVersion, specMcrVersion)
+	h.Metadata.MCRVersion = currentVersion
+	h.Metadata.MCRRestartRequired = false
+
 	return nil
 }

pkg/product/mke/phase/install_mcr.go

@@ -53,7 +53,7 @@ func (p *InstallMCR) Run() error {
 }
 
 func (p *InstallMCR) installMCR(h *api.Host) error {
-	err := retry.Do(
+	if err := retry.Do(
 		func() error {
 			log.Infof("%s: installing container runtime (%s)", h, p.Config.Spec.MCR.Version)
 			if err := h.Configurer.InstallMCR(h, h.Metadata.MCRInstallScript, p.Config.Spec.MCR); err != nil {
@@ -62,22 +62,19 @@ func (p *InstallMCR) installMCR(h *api.Host) error {
 			}
 			return nil
 		},
-	)
-	if err != nil {
+	); err != nil {
 		return fmt.Errorf("retry count exceeded: %w", err)
 	}
 
 	if err := h.AuthorizeDocker(); err != nil {
 		return fmt.Errorf("%s: failed to authorize docker: %w", h, err)
 	}
-	err = mcr.EnsureMCRVersion(h, p.Config.Spec.MCR.Version)
-	if err != nil {
+
+	// check MCR is running, maybe rebooting and updating metadata (don't bother restarting MCR, as we just installed/started it
+	if err := mcr.EnsureMCRVersion(h, p.Config.Spec.MCR.Version, false); err != nil {
 		return fmt.Errorf("failed while attempting to ensure the installed version %w", err)
 	}
 
-	log.Infof("%s: mirantis container runtime version %s installed", h, p.Config.Spec.MCR.Version)
-	h.Metadata.MCRVersion = p.Config.Spec.MCR.Version
-	h.Metadata.MCRRestartRequired = false
 	h.Metadata.MCRInstalled = true
 	return nil
 }

pkg/product/mke/phase/upgrade_mcr.go

@@ -163,26 +163,23 @@ func (p *UpgradeMCR) upgradeMCRs() error {
 }
 
 func (p *UpgradeMCR) upgradeMCR(h *api.Host) error {
-	err := retry.Do(
+	if err := retry.Do(
 		func() error {
 			log.Infof("%s: upgrading container runtime (%s -> %s)", h, h.Metadata.MCRVersion, p.Config.Spec.MCR.Version)
 			if err := h.Configurer.InstallMCR(h, h.Metadata.MCRInstallScript, p.Config.Spec.MCR); err != nil {
 				return fmt.Errorf("%s: failed to install container runtime: %w", h, err)
 			}
 			return nil
 		},
-	)
-	if err != nil {
+	); err != nil {
 		log.Errorf("%s: failed to update container runtime -> %s", h, err.Error())
 		return fmt.Errorf("retry count exceeded: %w", err)
 	}
-	err = mcr.EnsureMCRVersion(h, p.Config.Spec.MCR.Version)
-	if err != nil {
+
+	// check MCR is running, and updating metadata
+	if err := mcr.EnsureMCRVersion(h, p.Config.Spec.MCR.Version, false); err != nil {
 		return fmt.Errorf("failed while attempting to ensure the installed version: %w", err)
 	}
 
-	log.Infof("%s: upgraded to mirantis container runtime version %s", h, p.Config.Spec.MCR.Version)
-	h.Metadata.MCRVersion = p.Config.Spec.MCR.Version
-	h.Metadata.MCRRestartRequired = false
 	return nil
 }