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There are many views to esxtop. To change between these views, please use the following legendc = cpum = memoryn = networki = interruptsd = disk adapteru = disk devicev = disk VMp = power mgmtx = vsan V = only show virtual machine worldse = Expand/Rollup CPU statistics, show details of all worlds associated with group (GID)k = kill world, for tech support purposes only!l = limit display to a single group (GID), enables you to focus on one VM# = limiting the number of entities, for instance the top 5 The Memory panel displays server-wide and group memory utilization statistics. As on the CPU panel, groups correspond to resource pools, running virtual machines, or other worlds that are consuming memory The first line, found at the top of the Memory panel displays the current time, time since last reboot, number of currently running worlds, and memory over commitment averages. The memory over commitment averages over the past one, five, and fifteen minutes appear. Memory over commitment
About Xi Frame:Xi Frame is a secure cloud platform that lets enterprises and independent software vendors (ISVs) deliver applications, desktops, and software-defined workspaces to users. Users only require a connected device with a modern web browser. There are no clients, downloads, or plugins to install.Please follow this KB article for a step-by-step procedure for setting up and configuring your Cloud Connector Appliance manually.Note: CCA and WCCA VMs are automatically created in PC versions above 5.11 when deployed. Requirements Nutanix cluster running AHV with Acropolis Operating System (AOS) with Prism Central 5.10 or newer Frame Agent and Frame Cloud Connector Appliance (which you can find here) A Xi Frame subscription (sign up through https://my.nutanix.com/) Review the Network Configuration Requirements documentation which outlines required network protocol and port configurations. Note:If the CCA is already deployed, then just follow the steps in the Frame Documentatio
Below are new knowledge base articles published on the week of January 3-9, 2021.KB 10280 - A130149 - Guest Power Operation through NGT Failed. KB 10316 - Degraded performance on Lenovo hosts running AHV hypervisor as CPU runs at low frequency speed due to BIOS P-State configured mode failing to interact correctly with the hypervisor driver KB 10502 - Prism support for SNI (Server Name Indication) KB 10521 - Acropolis service stalling on all nodes in AOS 5.17.x. UEFI VM stuck in power-on state KB 10542 - Protection Domain schedules following DST time changes is not affecting hourly schedules KB 10550 - Leap | Recovery plan failover of VM fails with message "NGT reconfiguration failed. error detail: INTERNAL_ERROR: ErrorCode: 9" in the UI however VM has migrated and powered offNote: You may need to log in to the Support Portal to view some of these articles.
Nutanix offers enterprise ready hypervisor. Its integrated with Nutanix enterprise cloud OS stack. Below diagram shows how a single AHV node looks The AHV is built upon the CentOS KVM foundation and it include features like HA, live migration.KVM architecture consists of following components KVM-kmod Libvirtd:An API, daemon and management tool for managing KVM and QEMU. Qemu-kvm: A machine emulator and virtualizer that runs in userspace for every Virtual Machine (domain) For details about AHV architecture please refer following articleAHV
In this Google-ready culture, many users will immediately turn to an internet search engine when seeking for information regarding a specific question or issue involving Prism. However, many users are unaware that Prism maintains an online help system which responds-to and changes depending upon which dashboard is currently being viewed within Prism.For example, a user may be interested in deploying a File Server and may have questions regarding this while reviewing the File Server dashboard within Prism. From that dashboard, simply clicking the global question mark icon from the top menu and selecting the “Help with this page” option will automatically open a new browser tab to the File Server Management section of the Prism Web Console Guide. What’s more, the specific version of the Prism Web Console Guide that is displayed corresponds to the current version of Prism from which it was launched.Further, some of the dialogue boxes within Prism also contain a question mark icon which wi
When looking through the IPMI event logs, you may come across a “General Chassis instruction” message that is asserted. This is event created when the node needs to be opened to conduct a replacement and the top cover is opened as a result.The chassis intrusion feature makes it difficult for a potential intruder to reset the sensor without authorization. Therefore, there is no physical button to reset the sensor on the node. The user has to reset this sensor in the IPMI web GUI, which is authenticated using administrator credentials.To find more information about this feature and instructions to reset the sensor, look at KB 1362 on the Support Portal.
Hardware TermsBMC: Baseboard management controller, the microcontroller that manages the motherboard. BIOS: Basic input/output system, the firmware that initializes the motherboard and runtime services on startup. HBA: Host Bus Adapter, a device that manages communication between storage media and other system components. SATA DOM: SATA disk on a module, the hypervisor boot drive for Nutanix platforms up to and including G5. M.2: mSATA 2, the hypervisor boot drive for Nutanix platforms G6 and later.Dell-Specific TermsiDRAC: Integrated Dell remote access controller, a software tool that lets you administer a server without needing physical access. iSM: iDRAC service module, a module that integrates iDRAC with an operating system. PTAgent: Power Tools agent, the software entity responsible for configuring the iSM. Firmware Entities: A collective term for all Dell firmware not related to iDRAC.Lenovo-Specific TermsIMM2: Integrated management module 2, a service processor that manages the
Below are new knowledge base articles published on the week of January 10-16, 2021.KB Number Description KB 10489 Objects - Objects browser shows No Data Found when used with FQDN KB 10547 Nutanix Files - Prerequisites for Quota Configuration for NFS KB 10555 Nutanix Frame - Request to Delete All Personal Data KB 10562 Nutanix Files - Random delay in data synchronization between Linux and Windows clients with Multiprotocol Share KB 10566 ESXi host unresponsive after upgrade to 6.7 P03 or later due to AHCI driver issue KB 10588 [Nutanix Objects] Authentication fails after re-adding directory service with a different name Note: You may need to log in to the Support Portal to view some of these articles.
All Nutanix clusters that run on third-party hypervisors share the same problem – how to communicate to that hypervisor.A Controller VM performs an array of tasks, many of which are triggered by the state of the host. In addition to that, a range of health checks is running regularly to ensure the cluster's health. For ESXi, CVM collects the information via SSH. Turning off SSH service on a host results in a multitude of health errors.While recommendation exists to keep the SSH service down on the ESXi hosts and only bring it up for ad-hoc tasks, this is not the way with Nutanix. Instead, look at strengthening network security. Consider limiting access to the hosts via SSH form a limited number of network segments, that are well protected by multiple additional layers of firewalls, two-factor authentication and what not.Stay safe, stay secure.KB-2051 NCC Health Check: esx_check_servicesvSphere Administration Guide for Acropolis: Nonconfigurable ESXi Components
Ever wondered how Nutanix stores the data in your environment in a distributed format? When does SSD come into picture or when is HDD actually used? Here is a brief intro in a few words of how data moves within the cluster and links to extensive libraries for more details.The disk usage stats are governed by various factors like the type of data(Frequently used or rarely used), the type of user VM(All flash or Hybrid), the type of hardware setup(All flash or Hybrid) and also the capacity optimisation techniques used in the environment.In a few words, I can summarise data I/O path in Nutanix as follows: Under normal circumstances, all the write I/Os are written to the SSDs first. Based on the type of data(metadata or actual data), frequency of the data read back (Hot/Cold data) and other such algorithms, this data is gradually drained to the Extent Stores, which are majorly located on the HDDs and partially on the SSDs as well. Nutanix Data I/O Path:This is a pictorial representation of
Many users are not aware that a recent change has been made to the default password setting of new Nutanix nodes. Specifically, the default password for the IPMI interface is now the serial number of the node itself (using capital letters). Please note that the node serial number is different from the block serial number. You can find more information regarding this change as per the Common BMC and IPMI Utilities and Examples Knowledge Base article.Also, if you desire to change the IPMI password, you can do so using the IPMI management utility located within the file system of the operating system running on the node. Further, you can even change the password, without having an operating system installed/running, by using the utility from a bootable DOS environment. You can find more information regarding this within the Changing the IPMI Password section of the NX Series Hardware Administration Guide.
Era offers the following key services for several database engines:One-Click Provisioning. Copy Data Management. Database Protection. One-Click Patching.One-Click ProvisioningEra enables you to easily provision database environments (either production or otherwise) on your Nutanix clusters. Era provisioning service includes the following components:Database engines: Custom software images that can be tailored to fit your enterprise needs. (See Oracle Database Management, Microsoft SQL Server Database Management, PostgreSQL Database Management, MySQL Database Management, MariaDB Database Management, and SAP HANA Database Management for more information) Database profiles: Customizable database profiles for software, compute, networking, and database parameters. (See Era Profiles for more information) Database recovery SLAs: Customizable recovery SLAs for continuous, daily, weekly, monthly, and quarterly Recovery Point Objectives (RPOs). (See SLA Management for more information)VM Affini
Below are new knowledge base articles published on the week of January 17-23, 2021.KB 10178 - [JPKB] Files ストレージネットワークに存在するクライアントからファイル共有にアクセスできません KB 10234 - acli host.enter_maintenance_mode_check on AHV is not deterministic KB 10422 - After LCM upgrade an ESXi host is showing "Installing... Please be patient..." on ESXi DCUI for a long period of time KB 10548 - "Unknown device" in Device Manage of Windows VM running in BIOS mode KB 10602 - Nutanix Files - Error message "Error creating share/export: Duplicate client entry!" when creating an NFS Share with non-default access permissions KB 10603 - Objects - Unable to deploy VMware based cluster. Failing with 'Failed to initialize vcenter client for Prism Element' KB 10612 - Alert - A1137 - Node Failure KB 10613 - RHEL 7.8 installer hangs at "Installing Boot Loader" for AHV VM on AOS 5.18.x when using Secure Boot for VM KB 10628 - LCM upgrade failure with mesage "Contorller is missing on the OS, tried PCI rescan for 3 times, it did not
LCM 2.4 introduced a new protocol called the Redfish Protocol. It uses a RESTful API interface for server management. While there are many improvements introduced in the backend, there are a couple of improvements done on the frontend as well.The main improvement on the frontend is that LCM now performs the BMC and BIOS updates using Redfish twice as fast as the older method of using a Phoenix ISO. The time gained is due to fewer restarts needed for BMC and BIOS (no restarts needed for BMC updates and one restart for BIOS updates).While there are specific requirements for LCM to utilize the Redfish protocol, the LCM UI in LCM 2.4 displays this information in the Inventory Pane.For more information about the requirements and the LCM UI, take a look at the Redfish Protocol documentation on the Support Portal.
There are instances when you have to perform a rolling restart of the CVMs (Controller VMs) or a rolling restart of the hypervisor hosts or a restart of just one of the CVMs. This is a list of health checks to execute prior to the restart to verify cluster health. Verify if any nodes or services are in a 'down' state. Run the following command for smaller sized clusters: nutanix@cvm$ cluster status If the cluster contains multiple nodes, running the following command which excludes services that are UP from the output may be more convenient:nutanix@cvm$ cluster status | grep -v UPNodes or services that are unexpectedly in a 'down' state need to be fixed before proceeding with the restart. Verify if any nodes are missing or are in a 'down' state in the Cassandra ring. There should be the same number of nodes as the number of IPs in the svmips output (four nodes in the example below). If a node is missing, it means it was removed from the Cassandra ring:nutanix@cvm$ nodetool -h 0 ringAd
Below are new knowledge base articles published on the week of January 24-30, 2021.KB 9399 - NCC Health Check: ipv6_config_check KB 10053 - NCC Health Check: vmd_driver_disablement_check KB 10616 - Connectivity or performance issues with pfSense VM after AHV upgrade KB 10620 - Zookeeper: Check failed: zoo_error == ZeusError::kNoNode (kRuntimeInconsistency vs. kNoNode) KB 10658 - Critical Alert - A1033 - VM action error KB 10659 - Stargate service crashing on the DR destination cluster due to incompatible compression algorithm in prior AOS versions after primary site has been upgraded to 5.19.x version KB 10682 - Move - Migration may stuck with status: Sync Snapshot (MOVESnap-0)Note: You may need to log in to the Support Portal to view some of these articles.
Below are the top knowledge base articles for the month of January 2021.KB 7503 - NX Hardware [Memory] – G6, G7 platforms - DIMM Error handling and replacement policy KB 1540 - What to do when /home partition or /home/nutanix directory on a Controller VM is full KB 4141 - Alert - A1046 - PowerSupplyDown KB 1113 - HDD/SSD Troubleshooting KB 4409 - LCM: (Life Cycle Manager) Troubleshooting Guide KB 4158 - Alert - A1104 - PhysicalDiskBad KB 2090 - AHV host networking KB 2473 - NCC Health Check: cvm_memory_usage_check KB 4519 - NCC Health Check: check_ntp KB 6945 - How Upgrades Work at Nutanix KB 1863 - NCC Health Check: sufficient_disk_space_check KB 3741 - NGT: Nutanix Guest Tools Troubleshooting Guide KB 4273 - NCC Health Check: aged_third_party_backup_snapshot_check and aged_entity_centric_third_party_backup_snapshot_check KB 8932 - NCC Health Check: pc_vm_resource_resize_check KB 3523 - How to create a Phoenix ISO or AHV ISO from a CVM or Foundation VM KB 5582 - NCC Health Check: idf
ESXTOP can be very good to tool to see the live stats and usage of the Physical host and its components, but more often than not, we would like to use that data to plot graphs or even save the data to examine it later. This brings us to the most important use case of ESXTOP is to run ESXi in batch mode. Batch mode provides us a way to collect esxtop stats from a physical ESXi host and analyze it on a Windows machine using Perfmon. Capture the Data:First thing would be capture only the relevant info and omit all the metrics you don't need.Use ‘f’ to ADD/Remove FieldsUse ‘o’ to change the order of Metrics Use ‘W’ to save the settings that you just edited.Caution: If you don't input a file name, the default settings will be saved as such. We are ready to run the esxtop in batch mode. esxtop -b -d 2 -n 100 > esxtop.csv b=batch moded=delayn=No of Iterationsa=all Metrics Usually capturing esxtop for an extended period of time can result in a large file. In order to avoid this, we can zip
Did you know that Nutanix now has a Smart Support diagnostics collection feature available in Nutanix Support Portal which can directly initiate log collection on Nutanix clusters thereby avoiding the need to manually collect and upload logs to the case?Customers can create a diagnostics collection for any of their clusters on demand. A diagnostics collection is a set of logs and health checks collected in a cluster for a specified interval. They are resources used to monitor the health of the clusters and analyze issues when problems occur. For details on how to create a new diagnostics collection via Nutanix Support Portal, see Creating a Collection section in Nutanix Support Portal.
As part of the Nutanix Smart Support, information about dispatches can now be viewed directly from Portal. With this view, you can edit Shipping, Contact, or FE work address details if necessary.Additional information such as the Part Type, Quantity, Part Location/Component Slot are all viewed from the same pane.If you need more clarification on the dispatch specifically, a Comment option is in place to reach out to Nutanix Support directly. These comments will also be placed in the case notes to look back at if necessary.For more information about the dispatch view, take a look at Dispatches Summary View on the Support Portal.
Below are new knowledge base articles published on the week of January 31-February 6, 2021.KB 10669 - Automatically logout from Prism Central web console within session timeout KB 10676 - LCM - lcm_upgrade_status errors out during inventory/upgrade initialization KB 10678 - Hyper-V - Move | Windows guest, ethernet device name set to Ethernet0_bak after migration.move KB 10679 - Default BIOS settings with Monitor/MWAIT being disabled on Lenovo based servers prevents enabling EVC for cluster or individual VMs KB 10705 - Nodes having DiscoveryOS version < 4.6 fails to discover on Foundation Central KB 10713 - Frame Instance Type Pool Clean-up (February 2021) KB 10719 - AOS 5.15.4 not showing Hypervisor Upgrade page on AHV/ESXi mixed clusterNote: You may need to log in to the Support Portal to view some of these articles.
Exploring AHV as your hypervisor of choice? Already a AHV user and want to learn more about its capabilities? See mission control for all things AHV. New 5.19 features.New Virtual Switches in the UI Upgrading to Virtual Switches in the UI Cross Cluster Live Migration Cross Cluster vdisk Live Migration https://www.nutanix.com/missioncontrol
The network panel in ESXTOP has a few metrics that will enable you to determine issues such as loss of network on a VM or high dropped packet on specific nics. Below is simple overview on how to use esxtop for networking: How to access:Log into your ESXi host and type esxtopPress ‘n’ to show only the networking view Port ID - The port ID used on the virtual switch. This ID is used for example for network traces with pktcap-uw.Press 'N' to sort by PORT-ID column.USED-BY - Indicates what is connected to the virtual switch port. Connected devices can be virtual machine NICs, VMkernel ports (vmk#), physical NICs (vmnic#) or ports used for health checks (Shadow of vmnic#).TEAM-PNIC - The physical NIC that the corresponding device is actively using. This information is helpful for network troubleshooting.%DRPTX - Dropped packets transmitted, hardware overworked. Possible cause : very high network utilization.%DRPRX - Dropped packets received, hardware overworked. Possible cause : very high
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