cleanup (and go fmt) of old debug logging since 17.06-ce and re-labeled all changes as follows -

- support sending hostname and domainname in IPAM
- support custom volume naming when using netapp volume driver
- use dashes as seperators for container names
- work in-progress DNS domainname changes
- de-duplicate DNS search domains
- add container "host" /etc/hosts entry equal to value of DOCKER_HOST_EXPORT_IP environment variable if defined
- cleanup duplicate ipvlan and macvlan network IDs during createNetwork (moby/libnetwork#2055)
- support optional skip of IPAM pool conflict checking
- set Swarm tasks to orphaned state if node becomes unavailable
- allow orphaned Swarm tasks assigned to a deleted node to start elseware
- Swarm tasks in an orphaned state should not be allowed to restart
- allow Swarm tasks in a remove state to be transitioned
- prevent oldTaskTimer from allowing the slot to be prematurely updated
- allow Swarm tasks to be cleaned up if they are in a pending state and are marked for removal
- support service level anti-affinity via label h3o-limitActiveServiceSlotsPerNode

Author: eyz

VERSION

@@ -1 +1 @@
-18.01.0-ce
+18.01.0-eyz

components/engine/api/types/network/network.go

@@ -26,6 +26,10 @@ type EndpointIPAMConfig struct {
 	IPv4Address  string   `json:",omitempty"`
 	IPv6Address  string   `json:",omitempty"`
 	LinkLocalIPs []string `json:",omitempty"`
+	// eyz START: support sending hostname and domainname in IPAM
+	Hostname   string `json:",omitempty"`
+	Domainname string `json:",omitempty"`
+	// eyz END: support sending hostname and domainname in IPAM
 }
 
 // Copy makes a copy of the endpoint ipam config

components/engine/container/container.go

@@ -709,6 +709,11 @@ func (container *Container) BuildJoinOptions(n named) ([]libnetwork.EndpointOpti
 				return nil, err
 			}
 			joinOptions = append(joinOptions, libnetwork.CreateOptionAlias(name, alias))
+			// eyz START: add network alias which includes the container FQDN (Hostname + Domainname)
+			if container.Config.Domainname != "" {
+				joinOptions = append(joinOptions, libnetwork.CreateOptionAlias(name, container.Config.Hostname+"."+container.Config.Domainname))
+			}
+			// eyz STOP: add network alias which includes the container FQDN (Hostname + Domainname)
 		}
 		for k, v := range epConfig.DriverOpts {
 			joinOptions = append(joinOptions, libnetwork.EndpointOptionGeneric(options.Generic{k: v}))
@@ -759,8 +764,10 @@ func (container *Container) BuildCreateEndpointOptions(n libnetwork.Network, epC
 				return nil, errors.Errorf("Invalid IPv6 address: %s)", ipam.IPv6Address)
 			}
 
+			// eyz START: support sending hostname and domainname in IPAM
 			createOptions = append(createOptions,
-				libnetwork.CreateOptionIpam(ip, ip6, ipList, nil))
+				libnetwork.CreateOptionIpam(ip, ip6, ipList, ipam.Hostname, ipam.Domainname, nil))
+			// eyz END: support sending hostname and domainname in IPAM
 
 		}
 

components/engine/daemon/cluster/executor/container/adapter.go

@@ -382,6 +382,13 @@ func (c *containerAdapter) createVolumes(ctx context.Context) error {
 			continue
 		}
 
+		// eyz START: support custom volume naming when using netapp volume driver
+		// Isaac (20171022): do not create netapp volumes here; we currently let them get created by the container.go code instead
+		if mount.VolumeOptions.DriverConfig.Name == "netapp" {
+			continue
+		}
+		// eyz END: support custom volume naming when using netapp volume driver
+
 		req := c.container.volumeCreateRequest(&mount)
 
 		// Check if this volume exists on the engine

components/engine/daemon/cluster/executor/container/container.go

@@ -4,6 +4,9 @@ import (
 	"errors"
 	"fmt"
 	"net"
+	// eyz START: support custom volume naming when using netapp volume driver
+	"regexp"
+	// eyz STOP: support custom volume naming when using netapp volume driver
 	"strconv"
 	"strings"
 	"time"
@@ -131,7 +134,16 @@ func (c *containerConfig) name() string {
 	}
 
 	// fallback to service.slot.id.
-	return fmt.Sprintf("%s.%s.%s", c.task.ServiceAnnotations.Name, slot, c.task.ID)
+	// eyz START: support custom volume naming when using netapp volume driver, use dashes as seperators for container names
+	//return fmt.Sprintf("%s.%s.%s", c.task.ServiceAnnotations.Name, slot, c.task.ID)
+	// only override container name if we are using a netapp mount volume driver
+	if c.hasMountDriverName("netapp") {
+		return fmt.Sprintf("%s-%s", c.task.ServiceAnnotations.Name, slot)
+	} else {
+		return fmt.Sprintf("%s-%s-%s", c.task.ServiceAnnotations.Name, slot, c.task.ID)
+	}
+	// eyz END: support custom volume naming when using netapp volume driver, use dashes as seperators for container names
+
 }
 
 func (c *containerConfig) image() string {
@@ -208,6 +220,40 @@ func (c *containerConfig) config() *enginecontainer.Config {
 		Healthcheck:  c.healthcheck(),
 	}
 
+	// eyz START: support custom volume naming when using netapp volume driver, use dashes as seperators for container names, work in-progress DNS domainname changes
+	// If we have a defined service name and slot ...
+	if c.task != nil && c.task.ServiceAnnotations.Name != "" && c.task.Slot > 0 {
+
+		slot := fmt.Sprint(c.task.Slot)
+		if slot == "" || c.task.Slot == 0 {
+			slot = c.task.NodeID
+		}
+
+		if c.hasMountDriverName("netapp") {
+			// ... and we're using a netapp mount volume driver, then set the Hostname to "SERVICENAME-SLOT"
+			config.Hostname = fmt.Sprintf("%s-%s", c.task.ServiceAnnotations.Name, slot)
+		} else {
+			// ... otherwise, set the Hostname "SERVICENAME-SLOT-TASKID"
+			config.Hostname = fmt.Sprintf("%s-%s-%s", c.task.ServiceAnnotations.Name, slot, c.task.ID)
+		}
+
+		///// testing START
+		stackNamespace, stackNamespaceExists := c.task.ServiceAnnotations.Labels["com.docker.stack.namespace"]
+		if stackNamespaceExists {
+			//config.Domainname = fmt.Sprintf("%s.swarm.DOMAIN.COM", stackNamespace)
+			// doesn't work
+			// config.Domainname = stackNamespace + "-test"
+			// config.Domainname = stackNamespace + ".swarm"
+			// works -
+			config.Domainname = stackNamespace
+		} else {
+			config.Domainname = "nostack"
+		}
+		logrus.Debugf("* engine/daemon/cluster/executor/container config() set config.Domainname to: %s", config.Domainname)
+		///// testing STOP
+	}
+	// eyz STOP: support custom volume naming when using netapp volume driver, use dashes as seperators for container names, work in-progress DNS domainname changes
+
 	if len(c.spec().Command) > 0 {
 		// If Command is provided, we replace the whole invocation with Command
 		// by replacing Entrypoint and specifying Cmd. Args is ignored in this
@@ -255,14 +301,51 @@ func (c *containerConfig) labels() map[string]string {
 	return labels
 }
 
+// eyz START: support custom volume naming when using netapp volume driver
+// helper function to find if a mount volume driver name was found
+func (c *containerConfig) hasMountDriverName(mountDriverName string) bool {
+	for _, mount := range c.spec().Mounts {
+		m := convertMount(mount)
+		if m.VolumeOptions != nil && m.VolumeOptions.DriverConfig != nil && m.VolumeOptions.DriverConfig.Name == mountDriverName {
+			return true
+		}
+	}
+	return false
+}
+
+// eyz END: support custom volume naming when using netapp volume driver
+
+// eyz START: support custom volume naming when using netapp volume driver
 func (c *containerConfig) mounts() []enginemount.Mount {
 	var r []enginemount.Mount
+	nonWordRegex, _ := regexp.Compile("[^a-zA-Z0-9]+")
 	for _, mount := range c.spec().Mounts {
-		r = append(r, convertMount(mount))
+		m := convertMount(mount)
+		if m.VolumeOptions != nil && m.VolumeOptions.DriverConfig != nil && m.VolumeOptions.DriverConfig.Name == "netapp" && c.task != nil && c.task.ServiceAnnotations.Name != "" && c.task.Slot > 0 {
+			slot := fmt.Sprint(c.task.Slot)
+			if slot == "" || c.task.Slot == 0 {
+				slot = c.task.NodeID
+			}
+
+			var newSourceRaw string
+			// if m.Source starts with c.task.ServiceAnnotations.Name, then don't include the c.task.ServiceAnnotations.Name prepend in the new volume Source; only the m.Source and slot, as c.task.ServiceAnnotations.Name would be redundant in this case
+			if strings.HasPrefix(m.Source, c.task.ServiceAnnotations.Name) {
+				newSourceRaw = fmt.Sprintf("%s_%s", m.Source, slot)
+			} else {
+				newSourceRaw = fmt.Sprintf("%s_%s_%s", c.task.ServiceAnnotations.Name, m.Source, slot)
+			}
+			// for compatibility with the NetApp Docker Volume Plugin, ensure all contiguous non-word characters are replaced with underscores
+			m.Source = nonWordRegex.ReplaceAllString(newSourceRaw, "_")
+		}
+		r = append(r, m)
+		//r = append(r, convertMount(mount))
+
 	}
 	return r
 }
 
+// eyz END: support custom volume naming when using netapp volume driver
+
 func convertMount(m api.Mount) enginemount.Mount {
 	mount := enginemount.Mount{
 		Source:   m.Source,
@@ -363,6 +446,19 @@ func (c *containerConfig) hostConfig() *enginecontainer.HostConfig {
 		hc.DNSOptions = c.spec().DNSConfig.Options
 	}
 
+	// eyz START: work in-progress DNS domainname changes
+	stackNamespace, stackNamespaceExists := c.task.ServiceAnnotations.Labels["com.docker.stack.namespace"]
+	if stackNamespaceExists {
+		//stackNamespaceSearchDomainPrepend := []string{fmt.Sprintf("%s.swarm.DOMAIN.COM", stackNamespace)}
+		stackNamespaceSearchDomainPrepend := []string{stackNamespace}
+		if len(hc.DNSSearch) > 0 {
+			hc.DNSSearch = append(stackNamespaceSearchDomainPrepend, hc.DNSSearch...)
+		} else {
+			hc.DNSSearch = stackNamespaceSearchDomainPrepend
+		}
+	}
+	// eyz STOP: work in-progress DNS domainname changes
+
 	c.applyPrivileges(hc)
 
 	// The format of extra hosts on swarmkit is specified in:

components/engine/daemon/container_operations.go

@@ -32,18 +32,43 @@ var (
 	getPortMapInfo    = container.GetSandboxPortMapInfo
 )
 
-func (daemon *Daemon) getDNSSearchSettings(container *container.Container) []string {
-	if len(container.HostConfig.DNSSearch) > 0 {
-		return container.HostConfig.DNSSearch
+// eyz START: de-duplicate DNS search domains
+func removeDuplicates(elements []string) []string {
+	seen := map[string]bool{}
+	result := []string{}
+
+	for _, element := range elements {
+		if !seen[element] {
+			seen[element] = true
+			result = append(result, element)
+		}
 	}
+	return result
+}
+
+// eyz STOP: de-duplicate DNS search domains
+
+// eyz START: de-duplicate DNS search domains
+func (daemon *Daemon) getDNSSearchSettings(container *container.Container) []string {
+	/*
+		  if len(container.HostConfig.DNSSearch) > 0 {
+				return container.HostConfig.DNSSearch
+			}
+
+			if len(daemon.configStore.DNSSearch) > 0 {
+				return daemon.configStore.DNSSearch
+			}
+	*/
 
-	if len(daemon.configStore.DNSSearch) > 0 {
-		return daemon.configStore.DNSSearch
+	if len(container.HostConfig.DNSSearch) > 0 || len(daemon.configStore.DNSSearch) > 0 {
+		return removeDuplicates(append(container.HostConfig.DNSSearch, daemon.configStore.DNSSearch...))
 	}
 
 	return nil
 }
 
+// eyz STOP: de-duplicate DNS search domains
+
 func (daemon *Daemon) buildSandboxOptions(container *container.Container) ([]libnetwork.SandboxOption, error) {
 	var (
 		sboxOptions []libnetwork.SandboxOption
@@ -116,15 +141,51 @@ func (daemon *Daemon) buildSandboxOptions(container *container.Container) ([]lib
 		}
 	}
 
+	// eyz START: add container "host" /etc/hosts entry equal to value of DOCKER_HOST_EXPORT_IP environment variable if defined
+	// NOTE: if env var DOCKER_HOST_EXPORT_IP is set on the host, then
+	// 1) we intend to create a hosts entry of "host" with the value of DOCKER_HOST_EXPORT_IP -- dockerHostExportIpAppendHost will be set: true
+	// 2) we intend to persist this environment variable into each launched container
+	dockerHostExportIpVal, dockerHostExportIpEnvExported := os.LookupEnv("DOCKER_HOST_EXPORT_IP")
+	// dockerHostExportIpAppendHost defaults to true if dockerHostExportIpEnvExported
+	dockerHostExportIpAppendHost := dockerHostExportIpEnvExported
+	// eyz STOP: add container "host" /etc/hosts entry equal to value of DOCKER_HOST_EXPORT_IP environment variable if defined
+
 	for _, extraHost := range container.HostConfig.ExtraHosts {
 		// allow IPv6 addresses in extra hosts; only split on first ":"
 		if _, err := opts.ValidateExtraHost(extraHost); err != nil {
 			return nil, err
 		}
 		parts := strings.SplitN(extraHost, ":", 2)
+
+		// eyz START: add container "host" /etc/hosts entry equal to value of DOCKER_HOST_EXPORT_IP environment variable if defined
+		// NOTE: if an extraHost entry for "host" (case-insensitive) has been specified, then we will not append the DOCKER_HOST_EXPORT_IP -- letting this extraHost of "host" override DOCKER_HOST_EXPORT_IP even if it is set
+		if strings.ToLower(parts[0]) == "host" {
+			dockerHostExportIpAppendHost = false
+		}
+		// eyz STOP: add container "host" /etc/hosts entry equal to value of DOCKER_HOST_EXPORT_IP environment variable if defined
+
 		sboxOptions = append(sboxOptions, libnetwork.OptionExtraHost(parts[0], parts[1]))
 	}
 
+	// eyz START: add container "host" /etc/hosts entry equal to value of DOCKER_HOST_EXPORT_IP environment variable if defined
+	// NOTE: if env var DOCKER_HOST_EXPORT_IP is set on the host, then create a hosts entry of "host" with the value of DOCKER_HOST_EXPORT_IP
+	if dockerHostExportIpAppendHost {
+		sboxOptions = append(sboxOptions, libnetwork.OptionExtraHost("host", dockerHostExportIpVal))
+	}
+
+	if dockerHostExportIpEnvExported {
+		dockerHostExportIpEnvInConfig := false
+		for _, envValue := range container.Config.Env {
+			if strings.HasPrefix(strings.ToUpper(envValue), "DOCKER_HOST_EXPORT_IP=") {
+				dockerHostExportIpEnvInConfig = true
+			}
+		}
+		if !dockerHostExportIpEnvInConfig {
+			container.Config.Env = append(container.Config.Env, fmt.Sprintf("DOCKER_HOST_EXPORT_IP=%s", dockerHostExportIpVal))
+		}
+	}
+	// eyz STOP: add container "host" /etc/hosts entry equal to value of DOCKER_HOST_EXPORT_IP environment variable if defined
+
 	if container.HostConfig.PortBindings != nil {
 		for p, b := range container.HostConfig.PortBindings {
 			bindings[p] = []nat.PortBinding{}
@@ -719,6 +780,17 @@ func (daemon *Daemon) connectToNetwork(container *container.Container, idOrName
 		}
 	}
 
+	// eyz START: support sending hostname and domainname in IPAM
+	if endpointConfig.IPAMConfig != nil {
+		if container.Config.Hostname != "" {
+			endpointConfig.IPAMConfig.Hostname = container.Config.Hostname
+		}
+		if container.Config.Domainname != "" {
+			endpointConfig.IPAMConfig.Domainname = container.Config.Domainname
+		}
+	}
+	// eyz END: support sending hostname and domainname in IPAM
+
 	err = daemon.updateNetworkConfig(container, n, endpointConfig, updateSettings)
 	if err != nil {
 		return err