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Version vom 12. August 2016, 17:18 Uhr

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→‎Technik
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===Server===
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*Modell:HP ProLiant DL380 G5 2x Xeon E5450
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*Betriebssystem: Ubuntu 16.04 LTS
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*Virtualisierung: KVM/QEMU
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 +
====Netzwerk Config====
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Installation Open vSwitch
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<source lang='text'>
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apt-get install openvswitch-switch openvswitch-common
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</source>
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Anlegen der Open vSwitch Bridges
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<source lang='text'>
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ovs-vsctl add-br br-sw01
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ovs-vsctl add-port br-sw01 enp2s0f1
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ovs-vsctl add-br br-sw02
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ovs-vsctl add-port br-sw02 ens1f0
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 +
ovs-vsctl add-br br-sw05
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ovs-vsctl add-port br-sw05 ens1f1
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</source>
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 +
/etc/network/interfaces
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<source lang='text'>
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# The loopback network interface
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auto lo
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iface lo inet loopback
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# The primary network interface
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auto br-ffwi
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iface br-ffwi inet static
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        bridge_ports enp2s0f0
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        bridge_stp no
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        bridge_fd 0
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        address 10.56.2.139
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        netmask 255.255.192.0
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        gateway 10.56.0.161
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        dns-nameservers 10.56.0.161 10.56.0.23 10.56.0.231
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# Uplink ffmwu-hans-sw01
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auto enp2s0f1
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iface enp2s0f1 inet manual
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 +
# Uplink ffmwu-hans-sw02
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auto ens1f0
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iface ens1f0 inet manual
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# Uplink ffmwu-hans-sw05
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auto ens1f1
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iface ens1f1 inet manual
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</source>
 +
 +
====Libvirt Networks====
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Man legt z.B. nach /tmp/ die Netzwerk Definitionen ab.
 +
 +
Datei /tmp/ovs-sw01.xml
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<source lang='xml'>
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<networkstatus>
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  <class_id bitmap='0-2'/>
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  <floor sum='0'/>
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  <network>
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    <name>ovs-sw01</name>
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    <uuid>e5992f9c-4dc1-4f7d-b4e5-6865e80c57f0</uuid>
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    <forward mode='bridge'/>
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    <bridge name='br-sw01'/>
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    <virtualport type='openvswitch'/>
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    <portgroup name='vlan-all' default='yes'>
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      <vlan trunk='yes'>
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        <tag id='5'/>
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        <tag id='11'/>
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        <tag id='12'/>
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        <tag id='13'/>
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        <tag id='14'/>
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        <tag id='15'/>
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        <tag id='16'/>
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      </vlan>
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    </portgroup>
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  </network>
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</networkstatus>
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</source>
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Datei /tmp/ovs-sw02.xml
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<source lang='xml'>
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<networkstatus>
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  <class_id bitmap='0-2'/>
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  <floor sum='0'/>
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  <network>
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    <name>ovs-sw02</name>
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    <uuid>3ceae5b0-cdb4-4996-a0d0-be5f206ed3c2</uuid>
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    <forward mode='bridge'/>
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    <bridge name='br-sw02'/>
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    <virtualport type='openvswitch'/>
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    <portgroup name='vlan-all' default='yes'>
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      <vlan trunk='yes'>
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        <tag id='5'/>
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      </vlan>
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    </portgroup>
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  </network>
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</networkstatus>
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</source>
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 +
Datei /tmp/ovs-sw05.xml
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<source lang='xml'>
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<networkstatus>
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  <class_id bitmap='0-2'/>
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  <floor sum='0'/>
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  <network>
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    <name>ovs-sw05</name>
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    <uuid>c22babeb-8513-4b83-b4eb-ea9252500477</uuid>
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    <forward mode='bridge'/>
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    <bridge name='br-sw05'/>
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    <virtualport type='openvswitch'/>
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    <portgroup name='vlan-all' default='yes'>
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      <vlan trunk='yes'>
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        <tag id='5'/>
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        <tag id='51'/>
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        <tag id='52'/>
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        <tag id='53'/>
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        <tag id='54'/>
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        <tag id='55'/>
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        <tag id='56'/>
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      </vlan>
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    </portgroup>
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  </network>
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</networkstatus>
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</source>
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Netzwerk-Definitionen einlesen, starten und für den Autostart markieren.
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<source lang='text'>
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virsh net-define /tmp/ovs-sw01.xml
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virsh net-define /tmp/ovs-sw02.xml
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virsh net-define /tmp/ovs-sw05.xml
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virsh net-start ovs-sw01
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virsh net-start ovs-sw02
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virsh net-start ovs-sw05
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virsh net-autostart ovs-sw01
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virsh net-autostart ovs-sw02
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virsh net-autostart ovs-sw05
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</source>
 +
 +
====Libvirt Domain Config====
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<source lang='xml'>
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<domain type='kvm' id='1'>
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    <name>ffmwu-hans-core</name>
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    <uuid>04502792-af13-41de-9073-a777ec8eea80</uuid>
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    <memory unit='KiB'>524288</memory>
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    <currentMemory unit='KiB'>524288</currentMemory>
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    <vcpu placement='static'>1</vcpu>
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    <resource>
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      <partition>/machine</partition>
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    </resource>
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    <os>
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      <type arch='x86_64' machine='pc-i440fx-wily'>hvm</type>
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      <boot dev='hd'/>
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    </os>
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    <features>
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      <acpi/>
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      <apic/>
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      <vmport state='off'/>
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    </features>
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    <cpu mode='host-model'>
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      <model fallback='allow'/>
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    </cpu>
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    <clock offset='utc'>
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      <timer name='rtc' tickpolicy='catchup'/>
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      <timer name='pit' tickpolicy='delay'/>
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      <timer name='hpet' present='no'/>
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    </clock>
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    <on_poweroff>destroy</on_poweroff>
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    <on_reboot>restart</on_reboot>
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    <on_crash>restart</on_crash>
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    <pm>
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      <suspend-to-mem enabled='no'/>
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      <suspend-to-disk enabled='no'/>
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    </pm>
 +
    <devices>
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      <emulator>/usr/bin/kvm-spice</emulator>
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      <disk type='file' device='disk'>
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        <driver name='qemu' type='raw'/>
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        <source file='/var/lib/libvirt/images/ffmwu-hans-core.img'/>
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        <backingStore/>
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        <target dev='vda' bus='virtio'/>
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        <alias name='virtio-disk0'/>
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        <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/>
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      </disk>
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      <controller type='usb' index='0' model='ich9-ehci1'>
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        <alias name='usb'/>
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        <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x7'/>
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      </controller>
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      <controller type='usb' index='0' model='ich9-uhci1'>
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        <alias name='usb'/>
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        <master startport='0'/>
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        <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0' multifunction='on'/>
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      </controller>
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      <controller type='usb' index='0' model='ich9-uhci2'>
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        <alias name='usb'/>
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        <master startport='2'/>
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        <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x1'/>
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      </controller>
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      <controller type='usb' index='0' model='ich9-uhci3'>
 +
        <alias name='usb'/>
 +
        <master startport='4'/>
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        <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x2'/>
 +
      </controller>
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      <controller type='pci' index='0' model='pci-root'>
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        <alias name='pci.0'/>
 +
      </controller>
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      <controller type='virtio-serial' index='0'>
 +
        <alias name='virtio-serial0'/>
 +
        <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
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      </controller>
 +
      <interface type='network'>
 +
        <mac address='52:54:00:dd:cc:9d'/>
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        <source network='ovs-sw01' portgroup='vlan-all'/>
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        <actual type='bridge'>
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          <source bridge='br-sw01'/>
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          <vlan trunk='yes'>
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            <tag id='5'/>
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            <tag id='11'/>
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            <tag id='12'/>
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            <tag id='13'/>
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            <tag id='14'/>
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            <tag id='15'/>
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            <tag id='16'/>
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          </vlan>
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          <virtualport type='openvswitch'>
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            <parameters interfaceid='2aa233d9-3a8e-46db-8230-72ea0b730ee2'/>
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          </virtualport>
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        </actual>
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        <target dev='vnet0'/>
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        <model type='virtio'/>
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        <alias name='net0'/>
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        <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
 +
      </interface>
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      <interface type='network'>
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        <mac address='52:54:00:12:3b:c2'/>
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        <source network='ovs-sw02' portgroup='vlan-all'/>
 +
        <actual type='bridge'>
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          <source bridge='br-sw02'/>
 +
          <vlan trunk='yes'>
 +
            <tag id='5'/>
 +
          </vlan>
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          <virtualport type='openvswitch'>
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            <parameters interfaceid='c1a010f5-7911-4651-ae41-080b8892e3e5'/>
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          </virtualport>
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        </actual>
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        <target dev='vnet1'/>
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        <model type='virtio'/>
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        <alias name='net1'/>
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        <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
 +
      </interface>
 +
      <interface type='network'>
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        <mac address='52:54:00:93:ba:bb'/>
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        <source network='ovs-sw05' portgroup='vlan-all'/>
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        <actual type='bridge'>
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          <source bridge='br-sw05'/>
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          <vlan trunk='yes'>
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            <tag id='5'/>
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            <tag id='51'/>
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            <tag id='52'/>
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            <tag id='53'/>
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            <tag id='54'/>
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            <tag id='55'/>
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            <tag id='56'/>
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          </vlan>
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          <virtualport type='openvswitch'>
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            <parameters interfaceid='d0223530-25ae-4649-8103-405ba0e79761'/>
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          </virtualport>
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        </actual>
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        <target dev='vnet2'/>
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        <model type='virtio'/>
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        <alias name='net2'/>
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        <address type='pci' domain='0x0000' bus='0x00' slot='0x0b' function='0x0'/>
 +
      </interface>
 +
      <serial type='pty'>
 +
        <source path='/dev/pts/0'/>
 +
        <target port='0'/>
 +
        <alias name='serial0'/>
 +
      </serial>
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      <console type='pty' tty='/dev/pts/0'>
 +
        <source path='/dev/pts/0'/>
 +
        <target type='serial' port='0'/>
 +
        <alias name='serial0'/>
 +
      </console>
 +
      <channel type='spicevmc'>
 +
        <target type='virtio' name='com.redhat.spice.0' state='disconnected'/>
 +
        <alias name='channel0'/>
 +
        <address type='virtio-serial' controller='0' bus='0' port='1'/>
 +
      </channel>
 +
      <input type='mouse' bus='ps2'/>
 +
      <input type='keyboard' bus='ps2'/>
 +
      <graphics type='spice' port='5900' autoport='yes' listen='127.0.0.1'>
 +
        <listen type='address' address='127.0.0.1' fromConfig='1'/>
 +
      </graphics>
 +
      <sound model='ich6'>
 +
        <alias name='sound0'/>
 +
        <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
 +
      </sound>
 +
      <video>
 +
        <model type='qxl' ram='65536' vram='65536' vgamem='16384' heads='1'/>
 +
        <alias name='video0'/>
 +
        <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
 +
      </video>
 +
      <redirdev bus='usb' type='spicevmc'>
 +
        <alias name='redir0'/>
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      </redirdev>
 +
      <redirdev bus='usb' type='spicevmc'>
 +
        <alias name='redir1'/>
 +
      </redirdev>
 +
      <watchdog model='i6300esb' action='reset'>
 +
        <alias name='watchdog0'/>
 +
        <address type='pci' domain='0x0000' bus='0x00' slot='0x0a' function='0x0'/>
 +
      </watchdog>
 +
      <memballoon model='virtio'>
 +
        <alias name='balloon0'/>
 +
        <address type='pci' domain='0x0000' bus='0x00' slot='0x09' function='0x0'/>
 +
      </memballoon>
 +
    </devices>
 +
    <seclabel type='dynamic' model='apparmor' relabel='yes'>
 +
      <label>libvirt-04502792-af13-41de-9073-a777ec8eea80</label>
 +
      <imagelabel>libvirt-04502792-af13-41de-9073-a777ec8eea80</imagelabel>
 +
    </seclabel>
 +
  </domain>
 +
</source>
 +
 +
====VM-Watchdog-Script====
 +
Wenn die VM unerwartet crasht, kann diese per Remote nicht resettet werden.
 +
Dies machen wir automatisiert mit diesem Script, das in /usr/local/bin liegt.
 +
<source lang='bash'>
 +
#!/bin/bash
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 +
count=$( ping6 -c 5 fd56:b4dc:4b1e:0:5054:ff:fedd:cc9d | grep "bytes from" | wc -l )
 +
if [ $count -eq 0 ]
 +
then
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  logger "ffmwu-hans-core: Not available -> Reset VM"
 +
  virsh reset ffmwu-hans-core || virsh start ffmwu-hans-core
 +
  exit 0
 +
else
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  logger "ffmwu-hans-core: Up and running -> nothing to do"
 +
  exit 0
 +
fi
 +
</source>
 +
 +
Per cronjob wird es alle 20 Minuten ausgeführt
 +
<source lang='text'>
 +
# m h  dom mon dow  command
 +
*/20 * * * * /usr/local/bin/vm-watchdog.sh
 +
</source>
    
===Uplink===
 
===Uplink===
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