When you add a server to a pool, the default networks are merged. XCP-ng creates a network for each physical NIC during installation. This section describes the general concepts of networking in XCP-ng. Funny how times change, nowadays you get really happy seeing a blue screen.If one NIC can be enough for your host, having a dedicated NIC for storage will be really important to get consistent performances (if you use shared storage (iSCSI or NFS). You can now safely customize the system (Press F2 in the console) and configure the management networkĪ reboot of the VCSA is necessary as it appears that a restart of the management services is not enough to restore all services.
#MAC RESTART NETWORK INTERFACE MAC#
To solve the mac address assignment fast, rename the file lesĪfter rebooting the VCSA, review the les file to verify that SUSE assigned the MAC address to eth0. Luckily udev rules are automatically generated during boot. We are now entering a twilight zone, where there is one ethernet interface configured with an IP-address (ifcfg-eth0) while SUSE is applying all rules to a device it created and using the MAC Address assigned to the only NIC attached to the VM (Network Adapter 1). It shows two Ethernet adapters, eth1 is using the MAC address currently assigned to the VM. When the ESXi host assigns the VM a new MAC Address, SUSE assigns a new unique interface to this MAC address and stores this in the file etc/udev/rules.d/les. Every line in the file describes one network interface and specifies its persistent name The udev database of network interfaces is stored in the file/etc/udev/rules.d/les.
#MAC RESTART NETWORK INTERFACE GENERATOR#
The udev persistent net generator (/lib/udev/rules.d/les) generates a rule matching the hardware (using its hardware address by default) and assigns a persistently unique interface for the hardware. However, all system configuration tools rely on persistent interface names. Systems which allow adding or removing hardware during runtime or support automatic configuration of devices cannot expect stable network device names assigned by the Kernel across reboots. The default Kernel device names are only predictable in very simple or tightly controlled hardware environments. When the Kernel detects a network card and creates a corresponding network interface, it assigns the device a name depending on the order of device discovery, or order of the loading of the Kernel modules. The following text is copied directly from the SUSE documentation: It looks like the problem occurs due to the way SUSE handles devices. Reviewing the ifcfg-eth0 file with cat shows that the correct networking configuration is still applied to eth0. When listing the files (ls) only ifcfg-eth0 shows up.
The networking interface files are stored in the directory /etc/sysconfig/networking/devices. When selecting option 6 “IP Address Allocation for eth1” VAMI reveals that it cannot read the interface files for ‘eth1’ Executing the command “/opt/vmware/share/vami/vami_config_net allows you to retrieve the current network configuration
VCSA networking is configured through the Virtual Appliance Management Interface (VAMI). The VCSA is configured with a single NIC and SUSE Linux Enterprise Server 11, which is the OS for the appliance, assigns the label eth0 to the first Ethernet adapter. When logging in and pinging the gateway the error, the system returns the error message “Network is unreachable”īefore tinkering with the configuration files, I like to restart the services and see if the status report exposes interesting information. Rename les file and reboot to have SUSE auto-generate a new les file with the correct MAC Address that allows you restore network connectivity via the console.īoth the web client and the VCSA config web page are unreachable, time to open up the VM console (Alt-F1). The VCSA does not allow the creation of a new ethernet controller.
SUSE Linux Enterprise Server 11 detects this new MAC address and views this as a new Ethernet Device. This means that the VM is getting a new UUID and a new MAC address. Selecting “I copied it” implies that this machine is a duplicate and that a new identity should be generated. And that’s when the fun started, vCenter down. While trying to do a million things all at once, I didn’t pay attention to the question whether I moved the virtual machine or whether I copied it. I’m upgrading the lab and I moved the vCenter Server Appliance (VCSA) to its new home. It rushes from Heaven to Hell in a matter of seconds” Well I think he perfectly described a day working in the lab and rushing through a migration. Paulo Coelho once stated “ Life moves very fast.
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