Update support for RHEL 8

nodeup/pkg/distros/distribution.go

@@ -88,7 +88,7 @@ func (d Distribution) IsDebianFamily() bool {
 		return true
 	case DistributionXenial, DistributionBionic:
 		return true
-	case DistributionCentos7, DistributionRhel7:
+	case DistributionCentos7, DistributionRhel7, DistributionCentos8, DistributionRhel8:
 		return false
 	case DistributionCoreOS, DistributionFlatcar, DistributionContainerOS:
 		return false

nodeup/pkg/model/firewall.go

@@ -46,7 +46,7 @@ func (b *FirewallBuilder) buildSystemdService() *nodetasks.Service {
 	manifest.Set("Unit", "Before", "network.target")
 	manifest.Set("Service", "Type", "oneshot")
 	manifest.Set("Service", "RemainAfterExit", "yes")
-	manifest.Set("Service", "ExecStart", "/home/kubernetes/bin/iptables-setup")
+	manifest.Set("Service", "ExecStart", "/opt/kops/helpers/iptables-setup")
 	manifest.Set("Install", "WantedBy", "basic.target")
 
 	manifestString := manifest.Render()
@@ -87,7 +87,7 @@ iptables -A FORWARD -w -p ICMP -j ACCEPT
 fi
 `
 	return &nodetasks.File{
-		Path:     "/home/kubernetes/bin/iptables-setup",
+		Path:     "/opt/kops/helpers/iptables-setup",
 		Contents: fi.NewStringResource(script),
 		Type:     nodetasks.FileType_File,
 		Mode:     s("0755"),

nodeup/pkg/model/miscutils.go

@@ -57,7 +57,7 @@ func (b *MiscUtilsBuilder) Build(c *fi.ModelBuilderContext) error {
 		packages = append(packages, "apt-transport-https")
 	} else if b.Distribution.IsRHELFamily() {
 		packages = append(packages, "curl")
-		packages = append(packages, "python")
+		packages = append(packages, "python2")
 		packages = append(packages, "git")
 	} else {
 		klog.Warningf("unknown distribution, skipping misc utils install: %v", b.Distribution)

nodeup/pkg/model/ntp.go

@@ -50,8 +50,14 @@ func (b *NTPBuilder) Build(c *fi.ModelBuilderContext) error {
 		c.AddTask(&nodetasks.Package{Name: "ntp"})
 		c.AddTask((&nodetasks.Service{Name: "ntp"}).InitDefaults())
 	} else if b.Distribution.IsRHELFamily() {
-		c.AddTask(&nodetasks.Package{Name: "ntp"})
-		c.AddTask((&nodetasks.Service{Name: "ntpd"}).InitDefaults())
+		switch b.Distribution {
+		case distros.DistributionCentos8, distros.DistributionRhel8:
+			c.AddTask(&nodetasks.Package{Name: "chrony"})
+			c.AddTask((&nodetasks.Service{Name: "chronyd"}).InitDefaults())
+		default:
+			c.AddTask(&nodetasks.Package{Name: "ntp"})
+			c.AddTask((&nodetasks.Service{Name: "ntpd"}).InitDefaults())
+		}
 	} else {
 		klog.Warningf("unknown distribution, skipping ntp install: %v", b.Distribution)
 		return nil