func (net UbuntuNetManager) ifaceAddresses(staticConfigs []StaticInterfaceConfiguration, dhcpConfigs []DHCPInterfaceConfiguration) ([]boship.InterfaceAddress, []boship.InterfaceAddress) {
staticAddresses := []boship.InterfaceAddress{}
for _, iface := range staticConfigs {
staticAddresses = append(staticAddresses, boship.NewSimpleInterfaceAddress(iface.Name, iface.Address))
}
dynamicAddresses := []boship.InterfaceAddress{}
for _, iface := range dhcpConfigs {
dynamicAddresses = append(dynamicAddresses, boship.NewResolvingInterfaceAddress(iface.Name, net.ipResolver))
}
return staticAddresses, dynamicAddresses
}
func (net ubuntuNetManager) SetupDhcp(networks boshsettings.Networks, errCh chan error) error {
net.logger.Debug(ubuntuNetManagerLogTag, "Configuring DHCP networking")
buffer := bytes.NewBuffer([]byte{})
t := template.Must(template.New("dhcp-config").Parse(ubuntuDHCPConfigTemplate))
// Keep DNS servers in the order specified by the network
// because they are added by a *single* DHCP's prepend command
dnsNetwork, _ := networks.DefaultNetworkFor("dns")
dnsServersList := strings.Join(dnsNetwork.DNS, ", ")
err := t.Execute(buffer, dnsServersList)
if err != nil {
return bosherr.WrapError(err, "Generating config from template")
}
dhclientConfigFile := net.dhclientConfigFile()
written, err := net.fs.ConvergeFileContents(dhclientConfigFile, buffer.Bytes())
if err != nil {
return bosherr.WrapError(err, "Writing to %s", dhclientConfigFile)
}
if written {
args := net.restartNetworkArguments()
net.logger.Debug(ubuntuNetManagerLogTag, "Restarting network interfaces")
_, _, _, err := net.cmdRunner.RunCommand("ifdown", args...)
if err != nil {
net.logger.Error(ubuntuNetManagerLogTag, "Ignoring ifdown failure: %s", err)
}
_, _, _, err = net.cmdRunner.RunCommand("ifup", args...)
if err != nil {
net.logger.Error(ubuntuNetManagerLogTag, "Ignoring ifup failure: %s", err)
}
}
addresses := []boship.InterfaceAddress{
// eth0 is hard coded in AWS and OpenStack stemcells.
// TODO: abstract hardcoded network interface name to the NetManager
boship.NewResolvingInterfaceAddress("eth0", net.ipResolver),
}
go func() {
net.addressBroadcaster.BroadcastMACAddresses(addresses)
if errCh != nil {
errCh <- nil
}
}()
return nil
}
func (net centosNetManager) broadcastIps(staticInterfaceConfigurations []StaticInterfaceConfiguration, dhcpInterfaceConfigurations []DHCPInterfaceConfiguration, errCh chan error) {
addresses := []boship.InterfaceAddress{}
for _, iface := range staticInterfaceConfigurations {
addresses = append(addresses, boship.NewSimpleInterfaceAddress(iface.Name, iface.Address))
}
for _, iface := range dhcpInterfaceConfigurations {
addresses = append(addresses, boship.NewResolvingInterfaceAddress(iface.Name, net.ipResolver))
}
go func() {
net.addressBroadcaster.BroadcastMACAddresses(addresses)
if errCh != nil {
errCh <- nil
}
}()
}
func (net centosNetManager) SetupDhcp(networks boshsettings.Networks, errCh chan error) error {
net.logger.Debug(centosNetManagerLogTag, "Configuring DHCP networking")
buffer := bytes.NewBuffer([]byte{})
t := template.Must(template.New("dhcp-config").Parse(centosDHCPConfigTemplate))
// Keep DNS servers in the order specified by the network
// because they are added by a *single* DHCP's prepend command
dnsNetwork, _ := networks.DefaultNetworkFor("dns")
dnsServersList := strings.Join(dnsNetwork.DNS, ", ")
err := t.Execute(buffer, dnsServersList)
if err != nil {
return bosherr.WrapError(err, "Generating config from template")
}
written, err := net.fs.ConvergeFileContents("/etc/dhcp/dhclient.conf", buffer.Bytes())
if err != nil {
return bosherr.WrapError(err, "Writing to /etc/dhcp/dhclient.conf")
}
if written {
net.restartNetwork()
}
addresses := []boship.InterfaceAddress{
// eth0 is hard coded in AWS and OpenStack stemcells.
// TODO: abstract hardcoded network interface name to the NetManager
boship.NewResolvingInterfaceAddress("eth0", net.ipResolver),
}
go func() {
net.addressBroadcaster.BroadcastMACAddresses(addresses)
if errCh != nil {
errCh <- nil
}
}()
return err
}
Expect(len(cmdRunner.RunCommands)).To(Equal(0))
})
}
ItBroadcastsMACAddresses := func() {
It("starts broadcasting the MAC addresses", func() {
errCh := make(chan error)
err := netManager.SetupDhcp(networks, errCh)
Expect(err).ToNot(HaveOccurred())
<-errCh // wait for all arpings
Expect(addressBroadcaster.BroadcastMACAddressesAddresses).To(Equal([]boship.InterfaceAddress{
boship.NewResolvingInterfaceAddress("eth0", ipResolver),
}))
})
}
Context("when dhclient3 is installed on the system", func() {
BeforeEach(func() { cmdRunner.CommandExistsValue = true })
Context("when dhcp was not previously configured", func() {
ItUpdatesDhcpConfig(dhcp3ConfPath)
ItRestartsDhcp()
ItBroadcastsMACAddresses()
})
Context("when dhcp was previously configured with different configuration", func() {
BeforeEach(func() {
func describeCentosNetManager() {
var (
fs *fakesys.FakeFileSystem
cmdRunner *fakesys.FakeCmdRunner
ipResolver *fakeip.FakeResolver
interfaceAddrsProvider *fakeip.FakeInterfaceAddressesProvider
addressBroadcaster *fakearp.FakeAddressBroadcaster
netManager Manager
interfaceConfigurationCreator InterfaceConfigurationCreator
)
BeforeEach(func() {
fs = fakesys.NewFakeFileSystem()
cmdRunner = fakesys.NewFakeCmdRunner()
ipResolver = &fakeip.FakeResolver{}
logger := boshlog.NewLogger(boshlog.LevelNone)
interfaceConfigurationCreator = NewInterfaceConfigurationCreator(logger)
interfaceAddrsProvider = &fakeip.FakeInterfaceAddressesProvider{}
interfaceAddrsValidator := boship.NewInterfaceAddressesValidator(interfaceAddrsProvider)
dnsValidator := NewDNSValidator(fs)
addressBroadcaster = &fakearp.FakeAddressBroadcaster{}
netManager = NewCentosNetManager(
fs,
cmdRunner,
ipResolver,
interfaceConfigurationCreator,
interfaceAddrsValidator,
dnsValidator,
addressBroadcaster,
logger,
)
})
writeNetworkDevice := func(iface string, macAddress string, isPhysical bool) string {
interfacePath := fmt.Sprintf("/sys/class/net/%s", iface)
fs.WriteFile(interfacePath, []byte{})
if isPhysical {
fs.WriteFile(fmt.Sprintf("/sys/class/net/%s/device", iface), []byte{})
}
fs.WriteFileString(fmt.Sprintf("/sys/class/net/%s/address", iface), fmt.Sprintf("%s\n", macAddress))
return interfacePath
}
Describe("SetupNetworking", func() {
var (
dhcpNetwork boshsettings.Network
staticNetwork boshsettings.Network
expectedNetworkConfigurationForStatic string
expectedNetworkConfigurationForDHCP string
expectedDhclientConfiguration string
)
BeforeEach(func() {
dhcpNetwork = boshsettings.Network{
Type: "dynamic",
Default: []string{"dns"},
DNS: []string{"8.8.8.8", "9.9.9.9"},
Mac: "fake-dhcp-mac-address",
}
staticNetwork = boshsettings.Network{
Type: "manual",
IP: "1.2.3.4",
Netmask: "255.255.255.0",
Gateway: "3.4.5.6",
Mac: "fake-static-mac-address",
}
interfaceAddrsProvider.GetInterfaceAddresses = []boship.InterfaceAddress{
boship.NewSimpleInterfaceAddress("ethstatic", "1.2.3.4"),
}
fs.WriteFileString("/etc/resolv.conf", `
nameserver 8.8.8.8
nameserver 9.9.9.9
`)
expectedNetworkConfigurationForStatic = `DEVICE=ethstatic
BOOTPROTO=static
IPADDR=1.2.3.4
NETMASK=255.255.255.0
BROADCAST=1.2.3.255
GATEWAY=3.4.5.6
ONBOOT=yes
PEERDNS=no
DNS1=8.8.8.8
DNS2=9.9.9.9
`
expectedNetworkConfigurationForDHCP = `DEVICE=ethdhcp
BOOTPROTO=dhcp
ONBOOT=yes
PEERDNS=yes
`
expectedDhclientConfiguration = `# Generated by bosh-agent
option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;
send host-name "<hostname>";
request subnet-mask, broadcast-address, time-offset, routers,
domain-name, domain-name-servers, domain-search, host-name,
netbios-name-servers, netbios-scope, interface-mtu,
rfc3442-classless-static-routes, ntp-servers;
prepend domain-name-servers 8.8.8.8, 9.9.9.9;
`
})
stubInterfacesWithVirtual := func(physicalInterfaces map[string]boshsettings.Network, virtualInterfaces []string) {
interfacePaths := []string{}
for iface, networkSettings := range physicalInterfaces {
interfacePaths = append(interfacePaths, writeNetworkDevice(iface, networkSettings.Mac, true))
}
for _, iface := range virtualInterfaces {
interfacePaths = append(interfacePaths, writeNetworkDevice(iface, "virtual", false))
}
fs.SetGlob("/sys/class/net/*", interfacePaths)
}
stubInterfaces := func(physicalInterfaces map[string]boshsettings.Network) {
stubInterfacesWithVirtual(physicalInterfaces, nil)
}
It("writes a network script for static and dynamic interfaces", func() {
stubInterfaces(map[string]boshsettings.Network{
"ethdhcp": dhcpNetwork,
"ethstatic": staticNetwork,
})
err := netManager.SetupNetworking(boshsettings.Networks{"dhcp-network": dhcpNetwork, "static-network": staticNetwork}, nil)
Expect(err).ToNot(HaveOccurred())
staticConfig := fs.GetFileTestStat("/etc/sysconfig/network-scripts/ifcfg-ethstatic")
Expect(staticConfig).ToNot(BeNil())
Expect(staticConfig.StringContents()).To(Equal(expectedNetworkConfigurationForStatic))
dhcpConfig := fs.GetFileTestStat("/etc/sysconfig/network-scripts/ifcfg-ethdhcp")
Expect(dhcpConfig).ToNot(BeNil())
Expect(dhcpConfig.StringContents()).To(Equal(expectedNetworkConfigurationForDHCP))
})
It("returns errors from glob /sys/class/net/", func() {
fs.GlobErr = errors.New("fs-glob-error")
err := netManager.SetupNetworking(boshsettings.Networks{"dhcp-network": dhcpNetwork, "static-network": staticNetwork}, nil)
Expect(err).To(HaveOccurred())
Expect(err.Error()).To(ContainSubstring("fs-glob-error"))
})
It("returns errors from writing the network configuration", func() {
stubInterfaces(map[string]boshsettings.Network{
"dhcp": dhcpNetwork,
"static": staticNetwork,
})
fs.WriteFileError = errors.New("fs-write-file-error")
err := netManager.SetupNetworking(boshsettings.Networks{"dhcp-network": dhcpNetwork, "static-network": staticNetwork}, nil)
Expect(err).To(HaveOccurred())
Expect(err.Error()).To(ContainSubstring("fs-write-file-error"))
})
It("returns errors when it can't create network interface configurations", func() {
stubInterfaces(map[string]boshsettings.Network{
"ethstatic": staticNetwork,
})
staticNetwork.Netmask = "not an ip" //will cause InterfaceConfigurationCreator to fail
err := netManager.SetupNetworking(boshsettings.Networks{"static-network": staticNetwork}, nil)
Expect(err).To(HaveOccurred())
Expect(err.Error()).To(ContainSubstring("Creating interface configurations"))
})
It("wrtites a dhcp configuration if there are dhcp networks", func() {
stubInterfaces(map[string]boshsettings.Network{
"ethdhcp": dhcpNetwork,
"ethstatic": staticNetwork,
})
err := netManager.SetupNetworking(boshsettings.Networks{"dhcp-network": dhcpNetwork, "static-network": staticNetwork}, nil)
Expect(err).ToNot(HaveOccurred())
dhcpConfig := fs.GetFileTestStat("/etc/dhcp/dhclient.conf")
Expect(dhcpConfig).ToNot(BeNil())
Expect(dhcpConfig.StringContents()).To(Equal(expectedDhclientConfiguration))
dhcpConfigSymlink := fs.GetFileTestStat("/etc/dhcp/dhclient-ethdhcp.conf")
Expect(dhcpConfigSymlink).ToNot(BeNil())
Expect(dhcpConfigSymlink.SymlinkTarget).To(Equal("/etc/dhcp/dhclient.conf"))
})
It("writes a dhcp configuration without prepended dns servers if there are no dns servers specified", func() {
dhcpNetworkWithoutDNS := boshsettings.Network{
Type: "dynamic",
Mac: "fake-dhcp-mac-address",
}
stubInterfaces(map[string]boshsettings.Network{
"ethdhcp": dhcpNetwork,
})
err := netManager.SetupNetworking(boshsettings.Networks{"dhcp-network": dhcpNetworkWithoutDNS}, nil)
Expect(err).ToNot(HaveOccurred())
dhcpConfig := fs.GetFileTestStat("/etc/dhcp/dhclient.conf")
Expect(dhcpConfig).ToNot(BeNil())
Expect(dhcpConfig.StringContents()).To(Equal(`# Generated by bosh-agent
option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;
send host-name "<hostname>";
request subnet-mask, broadcast-address, time-offset, routers,
domain-name, domain-name-servers, domain-search, host-name,
netbios-name-servers, netbios-scope, interface-mtu,
rfc3442-classless-static-routes, ntp-servers;
`))
dhcpConfigSymlink := fs.GetFileTestStat("/etc/dhcp/dhclient-ethdhcp.conf")
Expect(dhcpConfigSymlink).ToNot(BeNil())
Expect(dhcpConfigSymlink.SymlinkTarget).To(Equal("/etc/dhcp/dhclient.conf"))
})
It("returns an error if it can't write a dhcp configuration", func() {
stubInterfaces(map[string]boshsettings.Network{
"ethdhcp": dhcpNetwork,
"ethstatic": staticNetwork,
})
fs.WriteFileErrors["/etc/dhcp/dhclient.conf"] = errors.New("dhclient.conf-write-error")
err := netManager.SetupNetworking(boshsettings.Networks{"dhcp-network": dhcpNetwork, "static-network": staticNetwork}, nil)
Expect(err).To(HaveOccurred())
Expect(err.Error()).To(ContainSubstring("dhclient.conf-write-error"))
})
It("returns an error if it can't symlink a dhcp configuration", func() {
stubInterfaces(map[string]boshsettings.Network{
"ethdhcp": dhcpNetwork,
"ethstatic": staticNetwork,
})
fs.SymlinkError = errors.New("dhclient-ethdhcp.conf-symlink-error")
err := netManager.SetupNetworking(boshsettings.Networks{"dhcp-network": dhcpNetwork, "static-network": staticNetwork}, nil)
Expect(err).To(HaveOccurred())
Expect(err.Error()).To(ContainSubstring("dhclient-ethdhcp.conf-symlink-error"))
})
It("doesn't write a dhcp configuration if there are no dhcp networks", func() {
stubInterfaces(map[string]boshsettings.Network{
"ethstatic": staticNetwork,
})
err := netManager.SetupNetworking(boshsettings.Networks{"static-network": staticNetwork}, nil)
Expect(err).ToNot(HaveOccurred())
dhcpConfig := fs.GetFileTestStat("/etc/dhcp/dhclient-ethdhcp.conf")
Expect(dhcpConfig).To(BeNil())
})
It("restarts the networks if any ifconfig file changes", func() {
changingStaticNetwork := boshsettings.Network{
Type: "manual",
IP: "1.2.3.5",
Netmask: "255.255.255.0",
Gateway: "3.4.5.6",
Mac: "ethstatict-that-changes",
}
stubInterfaces(map[string]boshsettings.Network{
"ethdhcp": dhcpNetwork,
"ethstatic-that-changes": changingStaticNetwork,
"ethstatic": staticNetwork,
})
interfaceAddrsProvider.GetInterfaceAddresses = []boship.InterfaceAddress{
boship.NewSimpleInterfaceAddress("ethstatic", "1.2.3.4"),
boship.NewSimpleInterfaceAddress("ethstatic-that-changes", "1.2.3.5"),
}
fs.WriteFileString("/etc/sysconfig/network-scripts/ifcfg-ethstatic", expectedNetworkConfigurationForStatic)
fs.WriteFileString("/etc/dhcp/dhclient.conf", expectedDhclientConfiguration)
err := netManager.SetupNetworking(boshsettings.Networks{
"dhcp-network": dhcpNetwork,
"changing-static-network": changingStaticNetwork,
"static-network": staticNetwork,
},
nil)
Expect(err).ToNot(HaveOccurred())
Expect(len(cmdRunner.RunCommands)).To(Equal(1))
Expect(cmdRunner.RunCommands[0]).To(Equal([]string{"service", "network", "restart"}))
})
It("doesn't restart the networks if ifcfg and /etc/dhcp/dhclient.conf don't change", func() {
stubInterfaces(map[string]boshsettings.Network{
"ethdhcp": dhcpNetwork,
"ethstatic": staticNetwork,
})
fs.WriteFileString("/etc/sysconfig/network-scripts/ifcfg-ethstatic", expectedNetworkConfigurationForStatic)
fs.WriteFileString("/etc/sysconfig/network-scripts/ifcfg-ethdhcp", expectedNetworkConfigurationForDHCP)
fs.WriteFileString("/etc/dhcp/dhclient.conf", expectedDhclientConfiguration)
err := netManager.SetupNetworking(boshsettings.Networks{"dhcp-network": dhcpNetwork, "static-network": staticNetwork}, nil)
Expect(err).ToNot(HaveOccurred())
networkConfig := fs.GetFileTestStat("/etc/sysconfig/network-scripts/ifcfg-ethstatic")
Expect(networkConfig).ToNot(BeNil())
Expect(networkConfig.StringContents()).To(Equal(expectedNetworkConfigurationForStatic))
dhcpConfig := fs.GetFileTestStat("/etc/dhcp/dhclient.conf")
Expect(dhcpConfig.StringContents()).To(Equal(expectedDhclientConfiguration))
Expect(len(cmdRunner.RunCommands)).To(Equal(0))
})
It("restarts the networks if /etc/dhcp/dhclient.conf changes", func() {
stubInterfaces(map[string]boshsettings.Network{
"ethdhcp": dhcpNetwork,
"ethstatic": staticNetwork,
})
fs.WriteFileString("/etc/sysconfig/network-scripts/ifcfg-ethstatic", expectedNetworkConfigurationForStatic)
err := netManager.SetupNetworking(boshsettings.Networks{"dhcp-network": dhcpNetwork, "static-network": staticNetwork}, nil)
Expect(err).ToNot(HaveOccurred())
networkConfig := fs.GetFileTestStat("/etc/sysconfig/network-scripts/ifcfg-ethstatic")
Expect(networkConfig).ToNot(BeNil())
Expect(networkConfig.StringContents()).To(Equal(expectedNetworkConfigurationForStatic))
Expect(len(cmdRunner.RunCommands)).To(Equal(1))
Expect(cmdRunner.RunCommands[0]).To(Equal([]string{"service", "network", "restart"}))
})
Context("when manual networks were not configured with proper IP addresses", func() {
BeforeEach(func() {
interfaceAddrsProvider.GetInterfaceAddresses = []boship.InterfaceAddress{
boship.NewSimpleInterfaceAddress("ethstatic", "1.2.3.5"),
}
})
It("fails", func() {
stubInterfaces(map[string]boshsettings.Network{
"ethstatic": staticNetwork,
})
errCh := make(chan error)
err := netManager.SetupNetworking(boshsettings.Networks{"static-network": staticNetwork}, errCh)
Expect(err).To(HaveOccurred())
Expect(err.Error()).To(ContainSubstring("Validating static network configuration"))
})
})
Context("when dns is not properly configured", func() {
BeforeEach(func() {
fs.WriteFileString("/etc/resolv.conf", "")
})
It("fails", func() {
staticNetwork = boshsettings.Network{
Type: "manual",
IP: "1.2.3.4",
Default: []string{"dns"},
DNS: []string{"8.8.8.8"},
Netmask: "255.255.255.0",
Gateway: "3.4.5.6",
Mac: "fake-static-mac-address",
}
stubInterfaces(map[string]boshsettings.Network{
"ethstatic": staticNetwork,
})
errCh := make(chan error)
err := netManager.SetupNetworking(boshsettings.Networks{"static-network": staticNetwork}, errCh)
Expect(err).To(HaveOccurred())
Expect(err.Error()).To(ContainSubstring("Validating dns configuration"))
})
})
It("broadcasts MAC addresses for all interfaces", func() {
stubInterfaces(map[string]boshsettings.Network{
"ethdhcp": dhcpNetwork,
"ethstatic": staticNetwork,
})
errCh := make(chan error)
err := netManager.SetupNetworking(boshsettings.Networks{"dhcp-network": dhcpNetwork, "static-network": staticNetwork}, errCh)
Expect(err).ToNot(HaveOccurred())
broadcastErr := <-errCh // wait for all arpings
Expect(broadcastErr).ToNot(HaveOccurred())
Expect(addressBroadcaster.BroadcastMACAddressesAddresses).To(Equal([]boship.InterfaceAddress{
boship.NewSimpleInterfaceAddress("ethstatic", "1.2.3.4"),
boship.NewResolvingInterfaceAddress("ethdhcp", ipResolver),
}))
})
It("skips vip networks", func() {
stubInterfaces(map[string]boshsettings.Network{
"ethdhcp": dhcpNetwork,
"ethstatic": staticNetwork,
})
vipNetwork := boshsettings.Network{
Type: "vip",
Default: []string{"dns"},
DNS: []string{"4.4.4.4", "5.5.5.5"},
Mac: "fake-vip-mac-address",
IP: "9.8.7.6",
}
err := netManager.SetupNetworking(boshsettings.Networks{
"dhcp-network": dhcpNetwork,
"static-network": staticNetwork,
"vip-network": vipNetwork,
}, nil)
Expect(err).ToNot(HaveOccurred())
networkConfig := fs.GetFileTestStat("/etc/sysconfig/network-scripts/ifcfg-ethstatic")
Expect(networkConfig).ToNot(BeNil())
Expect(networkConfig.StringContents()).To(Equal(expectedNetworkConfigurationForStatic))
})
It("doesn't use vip networks dns", func() {
stubInterfaces(map[string]boshsettings.Network{
"ethstatic": staticNetwork,
})
vipNetwork := boshsettings.Network{
Type: "vip",
Default: []string{"dns"},
DNS: []string{"4.4.4.4", "5.5.5.5"},
Mac: "fake-vip-mac-address",
IP: "9.8.7.6",
}
err := netManager.SetupNetworking(boshsettings.Networks{
"vip-network": vipNetwork,
"static-network": staticNetwork,
}, nil)
Expect(err).ToNot(HaveOccurred())
networkConfig := fs.GetFileTestStat("/etc/sysconfig/network-scripts/ifcfg-ethstatic")
Expect(networkConfig).ToNot(BeNil())
Expect(networkConfig.StringContents()).ToNot(ContainSubstring("4.4.4.4"))
Expect(networkConfig.StringContents()).ToNot(ContainSubstring("5.5.5.5"))
})
Context("when no MAC address is provided in the settings", func() {
var staticNetworkWithoutMAC boshsettings.Network
BeforeEach(func() {
staticNetworkWithoutMAC = boshsettings.Network{
Type: "manual",
IP: "1.2.3.4",
Netmask: "255.255.255.0",
Gateway: "3.4.5.6",
DNS: []string{"8.8.8.8", "9.9.9.9"},
Default: []string{"dns"},
}
})
It("configures network for single device", func() {
stubInterfaces(
map[string]boshsettings.Network{
"ethstatic": staticNetwork,
},
)
err := netManager.SetupNetworking(boshsettings.Networks{
"static-network": staticNetworkWithoutMAC,
}, nil)
Expect(err).ToNot(HaveOccurred())
networkConfig := fs.GetFileTestStat("/etc/sysconfig/network-scripts/ifcfg-ethstatic")
Expect(networkConfig).ToNot(BeNil())
Expect(networkConfig.StringContents()).To(Equal(expectedNetworkConfigurationForStatic))
})
It("configures network for single device, when a virtual device is also present", func() {
stubInterfacesWithVirtual(
map[string]boshsettings.Network{
"ethstatic": staticNetwork,
},
[]string{"virtual"},
)
err := netManager.SetupNetworking(boshsettings.Networks{
"static-network": staticNetworkWithoutMAC,
}, nil)
Expect(err).ToNot(HaveOccurred())
physicalNetworkConfig := fs.GetFileTestStat("/etc/sysconfig/network-scripts/ifcfg-ethstatic")
Expect(physicalNetworkConfig).ToNot(BeNil())
Expect(physicalNetworkConfig.StringContents()).To(Equal(expectedNetworkConfigurationForStatic))
virtualNetworkConfig := fs.GetFileTestStat("/etc/sysconfig/network-scripts/ifcfg-virtual")
Expect(virtualNetworkConfig).To(BeNil())
})
})
})
Describe("GetConfiguredNetworkInterfaces", func() {
Context("when there are network devices", func() {
BeforeEach(func() {
interfacePaths := []string{}
interfacePaths = append(interfacePaths, writeNetworkDevice("fake-eth0", "aa:bb", true))
interfacePaths = append(interfacePaths, writeNetworkDevice("fake-eth1", "cc:dd", true))
interfacePaths = append(interfacePaths, writeNetworkDevice("fake-eth2", "ee:ff", true))
fs.SetGlob("/sys/class/net/*", interfacePaths)
})
writeIfcgfFile := func(iface string) {
fs.WriteFileString(fmt.Sprintf("/etc/sysconfig/network-scripts/ifcfg-%s", iface), "fake-config")
}
It("returns networks that have ifcfg config present", func() {
writeIfcgfFile("fake-eth0")
writeIfcgfFile("fake-eth2")
interfaces, err := netManager.GetConfiguredNetworkInterfaces()
Expect(err).ToNot(HaveOccurred())
Expect(interfaces).To(ConsistOf("fake-eth0", "fake-eth2"))
})
})
Context("when there are no network devices", func() {
It("returns empty list", func() {
interfaces, err := netManager.GetConfiguredNetworkInterfaces()
Expect(err).ToNot(HaveOccurred())
Expect(interfaces).To(Equal([]string{}))
})
})
})
}
func describeUbuntuNetManager() {
var (
fs *fakesys.FakeFileSystem
cmdRunner *fakesys.FakeCmdRunner
ipResolver *fakeip.FakeResolver
addressBroadcaster *fakearp.FakeAddressBroadcaster
interfaceAddrsProvider *fakeip.FakeInterfaceAddressesProvider
netManager UbuntuNetManager
interfaceConfigurationCreator InterfaceConfigurationCreator
)
writeNetworkDevice := func(iface string, macAddress string, isPhysical bool) string {
interfacePath := fmt.Sprintf("/sys/class/net/%s", iface)
fs.WriteFile(interfacePath, []byte{})
if isPhysical {
fs.WriteFile(fmt.Sprintf("/sys/class/net/%s/device", iface), []byte{})
}
fs.WriteFileString(fmt.Sprintf("/sys/class/net/%s/address", iface), fmt.Sprintf("%s\n", macAddress))
return interfacePath
}
stubInterfacesWithVirtual := func(physicalInterfaces map[string]boshsettings.Network, virtualInterfaces []string) {
interfacePaths := []string{}
for iface, networkSettings := range physicalInterfaces {
interfacePaths = append(interfacePaths, writeNetworkDevice(iface, networkSettings.Mac, true))
}
for _, iface := range virtualInterfaces {
interfacePaths = append(interfacePaths, writeNetworkDevice(iface, "virtual", false))
}
fs.SetGlob("/sys/class/net/*", interfacePaths)
}
stubInterfaces := func(physicalInterfaces map[string]boshsettings.Network) {
stubInterfacesWithVirtual(physicalInterfaces, nil)
}
BeforeEach(func() {
fs = fakesys.NewFakeFileSystem()
cmdRunner = fakesys.NewFakeCmdRunner()
ipResolver = &fakeip.FakeResolver{}
logger := boshlog.NewLogger(boshlog.LevelNone)
interfaceConfigurationCreator = NewInterfaceConfigurationCreator(logger)
addressBroadcaster = &fakearp.FakeAddressBroadcaster{}
interfaceAddrsProvider = &fakeip.FakeInterfaceAddressesProvider{}
interfaceAddrsValidator := boship.NewInterfaceAddressesValidator(interfaceAddrsProvider)
dnsValidator := NewDNSValidator(fs)
netManager = NewUbuntuNetManager(
fs,
cmdRunner,
ipResolver,
interfaceConfigurationCreator,
interfaceAddrsValidator,
dnsValidator,
addressBroadcaster,
logger,
).(UbuntuNetManager)
})
Describe("ComputeNetworkConfig", func() {
Context("when there is one manual network and neither is marked as default for DNS", func() {
It("should use the manual network for DNS", func() {
networks := boshsettings.Networks{
"manual": factory.Network{DNS: &[]string{"8.8.8.8"}}.Build(),
}
stubInterfaces(networks)
_, _, dnsServers, err := netManager.ComputeNetworkConfig(networks)
Expect(err).ToNot(HaveOccurred())
Expect(dnsServers).To(Equal([]string{"8.8.8.8"}))
})
})
Context("when there is a vip network and a manual network and neither is marked as default for DNS", func() {
It("should use the manual network for DNS", func() {
networks := boshsettings.Networks{
"vip": boshsettings.Network{Type: "vip"},
"manual": factory.Network{Type: "manual", DNS: &[]string{"8.8.8.8"}}.Build(),
}
stubInterfaces(networks)
_, _, dnsServers, err := netManager.ComputeNetworkConfig(networks)
Expect(err).ToNot(HaveOccurred())
Expect(dnsServers).To(Equal([]string{"8.8.8.8"}))
})
})
Context("when there is a vip network and a manual network and the manual network is marked as default for DNS", func() {
It("should use the manual network for DNS", func() {
networks := boshsettings.Networks{
"vip": boshsettings.Network{Type: "vip"},
"manual": factory.Network{Type: "manual", DNS: &[]string{"8.8.8.8"}, Default: []string{"dns"}}.Build(),
}
stubInterfaces(networks)
_, _, dnsServers, err := netManager.ComputeNetworkConfig(networks)
Expect(err).ToNot(HaveOccurred())
Expect(dnsServers).To(Equal([]string{"8.8.8.8"}))
})
})
Context("when specified more than one DNS", func() {
It("extracts all DNS servers from the network configured as default DNS", func() {
networks := boshsettings.Networks{
"default": factory.Network{
IP: "10.10.0.32",
Netmask: "255.255.255.0",
Mac: "aa::bb::cc",
Default: []string{"dns", "gateway"},
DNS: &[]string{"54.209.78.6", "127.0.0.5"},
Gateway: "10.10.0.1",
}.Build(),
}
stubInterfaces(networks)
staticInterfaceConfigurations, dhcpInterfaceConfigurations, dnsServers, err := netManager.ComputeNetworkConfig(networks)
Expect(err).ToNot(HaveOccurred())
Expect(staticInterfaceConfigurations).To(Equal([]StaticInterfaceConfiguration{
{
Name: "default",
Address: "10.10.0.32",
Netmask: "255.255.255.0",
Network: "10.10.0.0",
IsDefaultForGateway: true,
Broadcast: "10.10.0.255",
Mac: "aa::bb::cc",
Gateway: "10.10.0.1",
},
}))
Expect(dhcpInterfaceConfigurations).To(BeEmpty())
Expect(dnsServers).To(Equal([]string{"54.209.78.6", "127.0.0.5"}))
})
})
})
Describe("SetupNetworking", func() {
var (
dhcpNetwork boshsettings.Network
staticNetwork boshsettings.Network
expectedNetworkConfigurationForStaticAndDhcp string
)
BeforeEach(func() {
dhcpNetwork = boshsettings.Network{
Type: "dynamic",
Default: []string{"dns"},
DNS: []string{"8.8.8.8", "9.9.9.9"},
Mac: "fake-dhcp-mac-address",
}
staticNetwork = boshsettings.Network{
Type: "manual",
IP: "1.2.3.4",
Default: []string{"gateway"},
Netmask: "255.255.255.0",
Gateway: "3.4.5.6",
Mac: "fake-static-mac-address",
}
interfaceAddrsProvider.GetInterfaceAddresses = []boship.InterfaceAddress{
boship.NewSimpleInterfaceAddress("ethstatic", "1.2.3.4"),
}
fs.WriteFileString("/etc/resolv.conf", `
nameserver 8.8.8.8
nameserver 9.9.9.9
`)
expectedNetworkConfigurationForStaticAndDhcp = `# Generated by bosh-agent
auto lo
iface lo inet loopback
auto ethdhcp
iface ethdhcp inet dhcp
auto ethstatic
iface ethstatic inet static
address 1.2.3.4
network 1.2.3.0
netmask 255.255.255.0
broadcast 1.2.3.255
gateway 3.4.5.6
dns-nameservers 8.8.8.8 9.9.9.9`
})
It("writes interfaces in /etc/network/interfaces in alphabetic order", func() {
anotherDHCPNetwork := boshsettings.Network{
Type: "dynamic",
Default: []string{"dns"},
DNS: []string{"8.8.8.8", "9.9.9.9"},
Mac: "fake-another-mac-address",
}
stubInterfaces(map[string]boshsettings.Network{
"ethstatic": staticNetwork,
"ethdhcp1": dhcpNetwork,
"ethdhcp0": anotherDHCPNetwork,
})
err := netManager.SetupNetworking(boshsettings.Networks{
"dhcp-network-1": dhcpNetwork,
"dhcp-network-2": anotherDHCPNetwork,
"static-network": staticNetwork,
}, nil)
Expect(err).ToNot(HaveOccurred())
networkConfig := fs.GetFileTestStat("/etc/network/interfaces")
Expect(networkConfig).ToNot(BeNil())
expectedNetworkConfigurationForStaticAndDhcp = `# Generated by bosh-agent
auto lo
iface lo inet loopback
auto ethdhcp0
iface ethdhcp0 inet dhcp
auto ethdhcp1
iface ethdhcp1 inet dhcp
auto ethstatic
iface ethstatic inet static
address 1.2.3.4
network 1.2.3.0
netmask 255.255.255.0
broadcast 1.2.3.255
gateway 3.4.5.6
dns-nameservers 8.8.8.8 9.9.9.9`
Expect(networkConfig.StringContents()).To(Equal(expectedNetworkConfigurationForStaticAndDhcp))
})
It("configures gateway, broadcast and dns for default network only", func() {
staticNetwork = boshsettings.Network{
Type: "manual",
IP: "1.2.3.4",
Netmask: "255.255.255.0",
Gateway: "3.4.5.6",
Mac: "fake-static-mac-address",
}
secondStaticNetwork := boshsettings.Network{
Type: "manual",
IP: "5.6.7.8",
Netmask: "255.255.255.0",
Gateway: "6.7.8.9",
Mac: "second-fake-static-mac-address",
DNS: []string{"8.8.8.8"},
Default: []string{"gateway", "dns"},
}
stubInterfaces(map[string]boshsettings.Network{
"eth0": staticNetwork,
"eth1": secondStaticNetwork,
})
interfaceAddrsProvider.GetInterfaceAddresses = []boship.InterfaceAddress{
boship.NewSimpleInterfaceAddress("eth0", "1.2.3.4"),
boship.NewSimpleInterfaceAddress("eth1", "5.6.7.8"),
}
err := netManager.SetupNetworking(boshsettings.Networks{
"static-1": staticNetwork,
"static-2": secondStaticNetwork,
}, nil)
Expect(err).ToNot(HaveOccurred())
networkConfig := fs.GetFileTestStat("/etc/network/interfaces")
Expect(networkConfig).ToNot(BeNil())
Expect(networkConfig.StringContents()).To(Equal(`# Generated by bosh-agent
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
address 1.2.3.4
network 1.2.3.0
netmask 255.255.255.0
auto eth1
iface eth1 inet static
address 5.6.7.8
network 5.6.7.0
netmask 255.255.255.0
broadcast 5.6.7.255
gateway 6.7.8.9
dns-nameservers 8.8.8.8`))
})
It("writes /etc/network/interfaces without dns-namservers if there are no dns servers", func() {
staticNetworkWithoutDNS := boshsettings.Network{
Type: "manual",
IP: "1.2.3.4",
Default: []string{"gateway"},
Netmask: "255.255.255.0",
Gateway: "3.4.5.6",
Mac: "fake-static-mac-address",
}
stubInterfaces(map[string]boshsettings.Network{
"ethstatic": staticNetworkWithoutDNS,
})
err := netManager.SetupNetworking(boshsettings.Networks{"static-network": staticNetworkWithoutDNS}, nil)
Expect(err).ToNot(HaveOccurred())
networkConfig := fs.GetFileTestStat("/etc/network/interfaces")
Expect(networkConfig).ToNot(BeNil())
Expect(networkConfig.StringContents()).To(Equal(`# Generated by bosh-agent
auto lo
iface lo inet loopback
auto ethstatic
iface ethstatic inet static
address 1.2.3.4
network 1.2.3.0
netmask 255.255.255.0
broadcast 1.2.3.255
gateway 3.4.5.6
`))
})
It("returns errors from glob /sys/class/net/", func() {
fs.GlobErr = errors.New("fs-glob-error")
err := netManager.SetupNetworking(boshsettings.Networks{"dhcp-network": dhcpNetwork, "static-network": staticNetwork}, nil)
Expect(err).To(HaveOccurred())
Expect(err.Error()).To(ContainSubstring("fs-glob-error"))
})
It("returns errors from writing the network configuration", func() {
stubInterfaces(map[string]boshsettings.Network{
"dhcp": dhcpNetwork,
"static": staticNetwork,
})
fs.WriteFileError = errors.New("fs-write-file-error")
err := netManager.SetupNetworking(boshsettings.Networks{"dhcp-network": dhcpNetwork, "static-network": staticNetwork}, nil)
Expect(err).To(HaveOccurred())
Expect(err.Error()).To(ContainSubstring("fs-write-file-error"))
})
It("returns errors when it can't creating network interface configurations", func() {
stubInterfaces(map[string]boshsettings.Network{
"ethdhcp": dhcpNetwork,
"ethstatic": staticNetwork,
})
staticNetwork.Netmask = "not an ip" //will cause InterfaceConfigurationCreator to fail
err := netManager.SetupNetworking(boshsettings.Networks{"static-network": staticNetwork}, nil)
Expect(err).To(HaveOccurred())
Expect(err.Error()).To(ContainSubstring("Creating interface configurations"))
})
It("writes a dhcp configuration if there are dhcp networks", func() {
stubInterfaces(map[string]boshsettings.Network{
"ethdhcp": dhcpNetwork,
"ethstatic": staticNetwork,
})
err := netManager.SetupNetworking(boshsettings.Networks{"dhcp-network": dhcpNetwork, "static-network": staticNetwork}, nil)
Expect(err).ToNot(HaveOccurred())
dhcpConfig := fs.GetFileTestStat("/etc/dhcp/dhclient.conf")
Expect(dhcpConfig).ToNot(BeNil())
Expect(dhcpConfig.StringContents()).To(Equal(`# Generated by bosh-agent
option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;
send host-name "<hostname>";
request subnet-mask, broadcast-address, time-offset, routers,
domain-name, domain-name-servers, domain-search, host-name,
netbios-name-servers, netbios-scope, interface-mtu,
rfc3442-classless-static-routes, ntp-servers;
prepend domain-name-servers 8.8.8.8, 9.9.9.9;
`))
})
It("writes a dhcp configuration without prepended dns servers if there are no dns servers specified", func() {
dhcpNetworkWithoutDNS := boshsettings.Network{
Type: "dynamic",
Mac: "fake-dhcp-mac-address",
}
stubInterfaces(map[string]boshsettings.Network{
"ethdhcp": dhcpNetwork,
})
err := netManager.SetupNetworking(boshsettings.Networks{"dhcp-network": dhcpNetworkWithoutDNS}, nil)
Expect(err).ToNot(HaveOccurred())
dhcpConfig := fs.GetFileTestStat("/etc/dhcp/dhclient.conf")
Expect(dhcpConfig).ToNot(BeNil())
Expect(dhcpConfig.StringContents()).To(Equal(`# Generated by bosh-agent
option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;
send host-name "<hostname>";
request subnet-mask, broadcast-address, time-offset, routers,
domain-name, domain-name-servers, domain-search, host-name,
netbios-name-servers, netbios-scope, interface-mtu,
rfc3442-classless-static-routes, ntp-servers;
`))
})
It("returns an error if it can't write a dhcp configuration", func() {
stubInterfaces(map[string]boshsettings.Network{
"ethdhcp": dhcpNetwork,
"ethstatic": staticNetwork,
})
fs.WriteFileErrors["/etc/dhcp/dhclient.conf"] = errors.New("dhclient.conf-write-error")
err := netManager.SetupNetworking(boshsettings.Networks{"dhcp-network": dhcpNetwork, "static-network": staticNetwork}, nil)
Expect(err).To(HaveOccurred())
Expect(err.Error()).To(ContainSubstring("dhclient.conf-write-error"))
})
It("doesn't write a dhcp configuration if there are no dhcp networks", func() {
stubInterfaces(map[string]boshsettings.Network{
"ethstatic": staticNetwork,
})
err := netManager.SetupNetworking(boshsettings.Networks{"static-network": staticNetwork}, nil)
Expect(err).ToNot(HaveOccurred())
dhcpConfig := fs.GetFileTestStat("/etc/dhcp/dhclient.conf")
Expect(dhcpConfig).To(BeNil())
})
It("restarts the networks if /etc/network/interfaces changes", func() {
initialDhcpConfig := `# Generated by bosh-agent
option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;
send host-name "<hostname>";
request subnet-mask, broadcast-address, time-offset, routers,
domain-name, domain-name-servers, domain-search, host-name,
netbios-name-servers, netbios-scope, interface-mtu,
rfc3442-classless-static-routes, ntp-servers;
prepend domain-name-servers 8.8.8.8, 9.9.9.9;
`
stubInterfaces(map[string]boshsettings.Network{
"ethdhcp": dhcpNetwork,
"ethstatic": staticNetwork,
})
fs.WriteFileString("/etc/dhcp/dhclient.conf", initialDhcpConfig)
err := netManager.SetupNetworking(boshsettings.Networks{"dhcp-network": dhcpNetwork, "static-network": staticNetwork}, nil)
Expect(err).ToNot(HaveOccurred())
Expect(len(cmdRunner.RunCommands)).To(Equal(5))
Expect(cmdRunner.RunCommands[0]).To(Equal([]string{"pkill", "dhclient"}))
Expect(cmdRunner.RunCommands[1:3]).To(ContainElement([]string{"resolvconf", "-d", "ethdhcp.dhclient"}))
Expect(cmdRunner.RunCommands[1:3]).To(ContainElement([]string{"resolvconf", "-d", "ethstatic.dhclient"}))
Expect(cmdRunner.RunCommands[3]).To(Equal([]string{"ifdown", "--force", "ethdhcp", "ethstatic"}))
Expect(cmdRunner.RunCommands[4]).To(Equal([]string{"ifup", "--force", "ethdhcp", "ethstatic"}))
})
It("doesn't restart the networks if /etc/network/interfaces and /etc/dhcp/dhclient.conf don't change", func() {
initialDhcpConfig := `# Generated by bosh-agent
option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;
send host-name "<hostname>";
request subnet-mask, broadcast-address, time-offset, routers,
domain-name, domain-name-servers, domain-search, host-name,
netbios-name-servers, netbios-scope, interface-mtu,
rfc3442-classless-static-routes, ntp-servers;
prepend domain-name-servers 8.8.8.8, 9.9.9.9;
`
stubInterfaces(map[string]boshsettings.Network{
"ethdhcp": dhcpNetwork,
"ethstatic": staticNetwork,
})
fs.WriteFileString("/etc/network/interfaces", expectedNetworkConfigurationForStaticAndDhcp)
fs.WriteFileString("/etc/dhcp/dhclient.conf", initialDhcpConfig)
err := netManager.SetupNetworking(boshsettings.Networks{"dhcp-network": dhcpNetwork, "static-network": staticNetwork}, nil)
Expect(err).ToNot(HaveOccurred())
networkConfig := fs.GetFileTestStat("/etc/network/interfaces")
Expect(networkConfig.StringContents()).To(Equal(expectedNetworkConfigurationForStaticAndDhcp))
dhcpConfig := fs.GetFileTestStat("/etc/dhcp/dhclient.conf")
Expect(dhcpConfig.StringContents()).To(Equal(initialDhcpConfig))
Expect(len(cmdRunner.RunCommands)).To(Equal(0))
})
It("restarts the networks if /etc/dhcp/dhclient.conf changes", func() {
stubInterfaces(map[string]boshsettings.Network{
"ethdhcp": dhcpNetwork,
"ethstatic": staticNetwork,
})
fs.WriteFileString("/etc/network/interfaces", expectedNetworkConfigurationForStaticAndDhcp)
err := netManager.SetupNetworking(boshsettings.Networks{"dhcp-network": dhcpNetwork, "static-network": staticNetwork}, nil)
Expect(err).ToNot(HaveOccurred())
networkConfig := fs.GetFileTestStat("/etc/network/interfaces")
Expect(networkConfig.StringContents()).To(Equal(expectedNetworkConfigurationForStaticAndDhcp))
Expect(len(cmdRunner.RunCommands)).To(Equal(5))
Expect(cmdRunner.RunCommands[0]).To(Equal([]string{"pkill", "dhclient"}))
Expect(cmdRunner.RunCommands[1:3]).To(ContainElement([]string{"resolvconf", "-d", "ethdhcp.dhclient"}))
Expect(cmdRunner.RunCommands[1:3]).To(ContainElement([]string{"resolvconf", "-d", "ethstatic.dhclient"}))
Expect(cmdRunner.RunCommands[3]).To(Equal([]string{"ifdown", "--force", "ethdhcp", "ethstatic"}))
Expect(cmdRunner.RunCommands[4]).To(Equal([]string{"ifup", "--force", "ethdhcp", "ethstatic"}))
})
It("broadcasts MAC addresses for all interfaces", func() {
stubInterfaces(map[string]boshsettings.Network{
"ethdhcp": dhcpNetwork,
"ethstatic": staticNetwork,
})
errCh := make(chan error)
err := netManager.SetupNetworking(boshsettings.Networks{"dhcp-network": dhcpNetwork, "static-network": staticNetwork}, errCh)
Expect(err).ToNot(HaveOccurred())
broadcastErr := <-errCh // wait for all arpings
Expect(broadcastErr).ToNot(HaveOccurred())
Expect(addressBroadcaster.BroadcastMACAddressesAddresses).To(Equal([]boship.InterfaceAddress{
boship.NewSimpleInterfaceAddress("ethstatic", "1.2.3.4"),
boship.NewResolvingInterfaceAddress("ethdhcp", ipResolver),
}))
})
It("skips vip networks", func() {
stubInterfaces(map[string]boshsettings.Network{
"ethdhcp": dhcpNetwork,
"ethstatic": staticNetwork,
})
vipNetwork := boshsettings.Network{
Type: "vip",
Default: []string{"dns"},
DNS: []string{"8.8.8.8", "9.9.9.9"},
Mac: "fake-vip-mac-address",
IP: "9.8.7.6",
}
err := netManager.SetupNetworking(boshsettings.Networks{
"dhcp-network": dhcpNetwork,
"static-network": staticNetwork,
"vip-network": vipNetwork,
}, nil)
Expect(err).ToNot(HaveOccurred())
networkConfig := fs.GetFileTestStat("/etc/network/interfaces")
Expect(networkConfig).ToNot(BeNil())
Expect(networkConfig.StringContents()).To(Equal(expectedNetworkConfigurationForStaticAndDhcp))
})
Context("when manual networks were not configured with proper IP addresses", func() {
BeforeEach(func() {
interfaceAddrsProvider.GetInterfaceAddresses = []boship.InterfaceAddress{
boship.NewSimpleInterfaceAddress("ethstatic", "1.2.3.5"),
}
})
It("fails", func() {
stubInterfaces(map[string]boshsettings.Network{
"ethstatic": staticNetwork,
})
errCh := make(chan error)
err := netManager.SetupNetworking(boshsettings.Networks{"static-network": staticNetwork}, errCh)
Expect(err).To(HaveOccurred())
Expect(err.Error()).To(ContainSubstring("Validating static network configuration"))
})
})
Context("when dns is not properly configured", func() {
BeforeEach(func() {
fs.WriteFileString("/etc/resolv.conf", "")
})
It("fails", func() {
staticNetwork = boshsettings.Network{
Type: "manual",
IP: "1.2.3.4",
Default: []string{"dns"},
DNS: []string{"8.8.8.8"},
Netmask: "255.255.255.0",
Gateway: "3.4.5.6",
Mac: "fake-static-mac-address",
}
stubInterfaces(map[string]boshsettings.Network{
"ethstatic": staticNetwork,
})
errCh := make(chan error)
err := netManager.SetupNetworking(boshsettings.Networks{"static-network": staticNetwork}, errCh)
Expect(err).To(HaveOccurred())
Expect(err.Error()).To(ContainSubstring("Validating dns configuration"))
})
})
Context("when no MAC address is provided in the settings", func() {
It("configures network for single device", func() {
staticNetworkWithoutMAC := boshsettings.Network{
Type: "manual",
IP: "2.2.2.2",
Default: []string{"gateway"},
Netmask: "255.255.255.0",
Gateway: "3.4.5.6",
}
stubInterfaces(
map[string]boshsettings.Network{
"ethstatic": staticNetwork,
},
)
interfaceAddrsProvider.GetInterfaceAddresses = []boship.InterfaceAddress{
boship.NewSimpleInterfaceAddress("ethstatic", "2.2.2.2"),
}
err := netManager.SetupNetworking(boshsettings.Networks{
"static-network": staticNetworkWithoutMAC,
}, nil)
Expect(err).ToNot(HaveOccurred())
networkConfig := fs.GetFileTestStat("/etc/network/interfaces")
Expect(networkConfig).ToNot(BeNil())
expectedNetworkConfiguration := `# Generated by bosh-agent
auto lo
iface lo inet loopback
auto ethstatic
iface ethstatic inet static
address 2.2.2.2
network 2.2.2.0
netmask 255.255.255.0
broadcast 2.2.2.255
gateway 3.4.5.6
`
Expect(networkConfig.StringContents()).To(Equal(expectedNetworkConfiguration))
})
It("configures network for a single physical device, when a virtual device is also present", func() {
staticNetworkWithoutMAC := boshsettings.Network{
Type: "manual",
IP: "2.2.2.2",
Default: []string{"gateway"},
Netmask: "255.255.255.0",
Gateway: "3.4.5.6",
}
stubInterfacesWithVirtual(
map[string]boshsettings.Network{
"ethstatic": staticNetwork,
},
[]string{"virtual"},
)
interfaceAddrsProvider.GetInterfaceAddresses = []boship.InterfaceAddress{
boship.NewSimpleInterfaceAddress("ethstatic", "2.2.2.2"),
}
err := netManager.SetupNetworking(boshsettings.Networks{
"static-network": staticNetworkWithoutMAC,
}, nil)
Expect(err).ToNot(HaveOccurred())
networkConfig := fs.GetFileTestStat("/etc/network/interfaces")
Expect(networkConfig).ToNot(BeNil())
expectedNetworkConfiguration := `# Generated by bosh-agent
auto lo
iface lo inet loopback
auto ethstatic
iface ethstatic inet static
address 2.2.2.2
network 2.2.2.0
netmask 255.255.255.0
broadcast 2.2.2.255
gateway 3.4.5.6
`
Expect(networkConfig.StringContents()).To(Equal(expectedNetworkConfiguration))
})
})
})
Describe("GetConfiguredNetworkInterfaces", func() {
Context("when there are network devices", func() {
BeforeEach(func() {
interfacePaths := []string{}
interfacePaths = append(interfacePaths, writeNetworkDevice("fake-eth0", "aa:bb", true))
interfacePaths = append(interfacePaths, writeNetworkDevice("fake-eth1", "cc:dd", true))
interfacePaths = append(interfacePaths, writeNetworkDevice("fake-eth2", "ee:ff", true))
fs.SetGlob("/sys/class/net/*", interfacePaths)
})
It("returns networks that are defined in /etc/network/interfaces", func() {
cmdRunner.AddCmdResult("ifup --no-act fake-eth0", fakesys.FakeCmdResult{
Stdout: "",
Stderr: "ifup: interface fake-eth0 already configured",
ExitStatus: 0,
})
cmdRunner.AddCmdResult("ifup --no-act fake-eth1", fakesys.FakeCmdResult{
Stdout: "",
Stderr: "Ignoring unknown interface fake-eth1=fake-eth1.",
ExitStatus: 0,
})
cmdRunner.AddCmdResult("ifup --no-act fake-eth2", fakesys.FakeCmdResult{
Stdout: "",
Stderr: "ifup: interface fake-eth2 already configured",
ExitStatus: 0,
})
interfaces, err := netManager.GetConfiguredNetworkInterfaces()
Expect(err).ToNot(HaveOccurred())
Expect(interfaces).To(ConsistOf("fake-eth0", "fake-eth2"))
})
})
Context("when there are no network devices", func() {
It("returns empty list", func() {
interfaces, err := netManager.GetConfiguredNetworkInterfaces()
Expect(err).ToNot(HaveOccurred())
Expect(interfaces).To(Equal([]string{}))
})
})
})
}