Sorry, our virus scanner detected that this file isn't safe to download. Please check cluster status and resiliency before proceeding. Basic CLI reference related for Nutanix Upgrade. All the CVMs in the cluster interact with each other using microservices handling the cluster stability, we need to inform the cluster if a CVM is going down and shutdown all the services in the CVM gracefully before shutting down the CVM. If you want to put your CVM, you can use the following commands. Step One – Maintenance Mode. nutanix@cvm$ acli host.exit_maintenance_mode 1.12 CVM のサービスが全てUP であることを確認します。 nutanix@cvm$ cluster status 1.13 クラスターの健全性確認手順にしたがって、クラスターの健全性を確認します。 Enter your username or e-mail address. So I used following steps to check the uptime of each component. If the vCenter Server is installed on the Nutanix container, directly log on to the ESXi host with VMware Host Client. use the same command to exit it from the maintenance mode with the switch ‘false’. If a VM can’t be migrated to another host, you need to shutdown the VM for the host to enter into maintenance mode. This will show the current uptime of each host in the cluster. AHV, CVM, Maintenance Mode, NCLI, Nutanix, Nutanix AHV, Nutanix CVM So I decided to write this post to summarize the troubleshooting steps I have taken and if you are not confident running these commands and do the troubleshooting by yourself, always engage with Nutanix Support. If you go to the ACLI and run a host.list you see that the host is not schedulable for running user VMs and also if you run a host.get for the details of the host you see a maintenance flag for the ‘node_state’ value. Please go through the KB to understand the workflow of enabling maintenance mode for the CVM and the host. During an upgrade process you may want to manually put AHV host/s into maintenance mode. Every architecture remains stable due to scheduled maintenance, in which we might need to shutdown the node or CVM to increase memory, replace network adapters or just some planned maintenance activity. In Nutanix, we have heard the term “CVM maintenance mode”. This can be accomplished by using following commands. Steps to exit from maintenance mode: Once completed with the maintenance activity, now we have to add the nodes back to cluster. To exit an AHV host/s from maintenance mode you can use the following command. Select the host and place it in the maintenance mode by navigating to the Host tab in the Host group and clicking Start Maintenance Mode . Host maintenance mode is used to safely migrate all the User Virtual VMs in the host and make sure NO VMs are running on the Node. Drop a comment in the forum and let us start a discussion. How can we enable maintenance mode for the CVM and the host? No.#3 Show cluster status and running services Login to CVM via SSH and the enter the following command. Last two weeks I was engaged with some Nutanix cluster upgrades and I had some different issues in my clusters. If it executes, run pre-upgrade check again. This will show the current CVM uptime. Copyright 2000-2020 - - All Rights Reserved, How to Fix a Nutanix CVM being Stuck in Maintenance Mode, Total Selects Nutanix to Power Digital Transformation, In-Place migration ESXi to AHV Conversion, What’s New in Nutanix Prism Ultimate 2020.8. Login to CVM via SSH and the enter the following command. Why do we need to put the CVM in maintenance mode if we are thinking of bringing down the CVM? If it fails, engage Nutanix Support. To Start Nutanix cluster following command cvm$ cluster start To Stop Nutanix cluster following command cvm$ cluster stop. During my upgrades, I wanted to check the uptime in both CVMs and AHV Hosts because I wasn’t sure they were properly rebooted. To make a CVM not part of any active storage and metadata connection, we enable maintenance mode in the CVM. Place the target ESXi host in maintenance mode and take it for your maintenance activity. Exit the ESXi host from Maintenance mode and Power-ON the CVM. Here is a quick how to fix a Nutanix CVM that has been stuck in Maintenance Mode. Planning for any hardware maintenance or relocation of the nutanix nodes need to stop the nutanix cluster for sometime and start again to begin production. Nutanix Controller Virtual Machine (CVM) maintenance mode is the topic i’ll cover in this quick blog post. What To Do When vCenter root Password Expired ? Right-click each CVM and select Power-> Shut down Guest OS. As a parameter it required host ID which you can find using below command. You are done. Sorry, we're still checking this file's contents to make sure it's safe to download. To ensure this went as smooth as possible I needed to enable maintenance mode on both the CVM (so the CVM wasn’t servicing IO) and the AHV host (so the VMs would migrate off the host). End AHV Host Maintenance Mode. In this example, I am using a Nutanix Community Edition, 1 node cluster. nutanix@cvm$ cvm_shutdown -P now Wait for the Controller VM to completely shut down. nutanix@cvm$ acli host.exit_maintenance_mode AHV-hypervisor-IP-address Also you can use the previous command to check the maintenance mode operation success or not. Connect a neighbor CVM available in Cluster via SSH. 2.) Nutanix Employee; 107 replies Every architecture remains stable due to scheduled maintenance, in which we might need to shutdown the node or CVM to increase memory, replace network adapters or just some planned maintenance activity. Replace cvm_name with the name of the Controller VM that you found from the preceding command. In addition to the CVM the AHV host itself has its own maintenance mode. 5. If the ESXi host is 6.0 update 2 or former, log on with vSphere Client. nutanix@cvm$ acli host.enter_maintenance_mode <> once the host is put into maintenance mode successfully the status will be shown in putty session. First – Yes – CVM and hypervisor maintenance mode are two different things.