virsh start NTNX-72c243e3-A-CVM. Log in or register now! I setup nutanix community edition today in my homelab, and I was interested in looking at how to change both CVM vCPU and vRAM count. AHV - Ensure `virsh connect` works. When you’re setting up a new environment like this, particularly in a lab/dev type setting, you’re going to spend a lot of time with SSH. Well, now I really thought I was cooking with gas, but more fun was coming my way, namely time synchronisation. This last command should show bond0 having bond_mode: balance-slb and further down next rebalance: xxxxx ms where it shows in milliseconds when the next re-balance will be. Run virsh dominfo again to confirm the changes were successful. Sorry, our virus scanner detected that this file isn't safe to download. To make the changes first shutdown the CVM with command: virsh shutdown NTNX-060e8ad7-A-CVM; Check to make sure the CVM is shutdown with: virsh list –all; Changing Memory Allocation. Given I’ve only got 1GbE connections, but do have two per node, I wanted to take advantage of using some more of the available bandwidth. cluster time was in the future vs. BIOS clock on the Optiplex’s. Jon Kohler | Technical Director, Engineering, Nutanix | Nutanix NPX #003, VCDX #116 | @JonKohler | Please Kudos if useful! If there are any errors or failures, contact Nutanix Support. For most people this probably won’t be a problem, but my cluster is NAT’d behind the Admin PC, which in turn is connected to the guest Wi-Fi network in the office. By default Nutanix AHV (Acropolis) uses an active/backup approach for multiple network connections to the same network. This process is documented in the AHV Admin Guide available via the Nutanix portal. Maybe if you’re not rushing to get the environment setup for an expo, you won’t make this mistake :-). With virsh list –all we display all VMs on the Nutanix CE node. ... # virsh shutdown NTNX-010422a0-A-CVM Then, maximum RAM is limited - like in the Intel NUC who can only support up to 32 GB. The following commands need to be completed on each host (not CVM) after logging on as root: virsh list to get the name of your CVM, and copy it for the next commands. My needs were simple really — generate some IO, and FIO looked ideal for this. I get I’m a bit spoilt with a 23” touch screen, and it’s not something that most people have access to, but if you do, tapping away at the screen to manage the cluster is fun. In my case I was rebooting the entire cluster and ended up in a scenario where the cluster thought it had gone forward in time i.e. First we go to the host via SSH where we want to shrink the CVM (Nutanix Controller Virtual Machine) memory (root/nutanix/4u). Important for us is the VM endent with CVM. virsh list to get the name of your CVM, and copy it for the next commands. virsh shutdown VMNAME Set the memory (8G references 8 GBs of memory) ```console virsh setmem VMANME 8G –config ‘’` ... Dell T710 Specific issues. The new address scheme looks like this (sorry this probably won’t display on mobile devices): The basic install of Nutanix CE is fairly straightforward and well documented by both Nutanix and other people’s blogs, so I won’t go into the details of installation. I followed @quinney_david post to reduce the amount of memory allocated to the CVM, setting each CVM to use 12GB of memory: Note: as of August 2018 I don’t bother with this anymore. Always double-check what you’re doing and confirm whether the command you’re about to execute should be run on the host, or run on the CVM. To rename the hosts you need to edit both /etc/hostname and /etc/sysconfig/network changing the name in both files. Combining this with using a 4G hotspot instead of the corporate guest Wi-Fi gave me a solution to my time sync issues. Enter your username or e-mail address. So my original plan re IP addressing had to be slightly modified in the name of simplicity, namely (Internet) connection sharing with Elementary OS (Ubuntu). Maybe run the command from the hypervisor? If you’re a Linux/Mac head, you’re probably already OK with this, and (most) Linux terminal sessions, and OSX Terminal are fine for normal SSH work. virsh shutdown NTNX-72c243e3-A-CVM. First time you must ssh to all CVM node and write the script cvm_shutdown -P and then you go to Vcenter and login to all node you can right click and shutdown. This will open the VM XML file using vi editor, use the following commands to edit the file (I always forget how to edit in vi, so I will show the steps here for my own sake), Run virsh dominfo again to confirm the changes were successful, In most cases with Nutanix CE, the defaults are 99% OK for most people.
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