--- title: "Unraveling Mysteries: Guide to Troubleshooting vCenter Logs" description: "Dive into the intricacies of vCenter logs—your compass in unraveling mysteries. Master troubleshooting vCenter logs in this tutorial today!" canonical: "https://adamtheautomator.com/vcenter-log/" --- # Unraveling Mysteries: Guide to Troubleshooting vCenter Logs > Dive into the intricacies of vCenter logs—your compass in unraveling mysteries. Master troubleshooting vCenter logs in this tutorial today! Source: https://adamtheautomator.com/vcenter-log/ --- ATA Learning Tap to hide [ ATA Learning ](/) * [Home](/) * [Tutorials](/tutorials/) * [Instructors](/author/) * [Advertising](/advertising/) * [Recommended Resources](/resources/) * [About Adam](/about-adam/) Search for: * [](https://twitter.com/adbertram) * [](https://github.com/Adam-the-Automator) * [](https://www.linkedin.com/company/adam-the-automator-llc) * [](/feed/) ![Unraveling Mysteries: Guide to Troubleshooting vCenter Logs](https://adamtheautomator.com/wp-content/uploads/2023/12/vcenter-log.jpg) # Unraveling Mysteries: Guide to Troubleshooting vCenter Logs [![](https://secure.gravatar.com/avatar/04025eca38bf59973f7838d8d4e79b34a3e3ef587ec879ee63f80149ff9be11b?s=192&d=mm&r=g)Verah Ombui](https://adamtheautomator.com/author/verah-ombui/)6 December 20239 min. read Categories: [IT Ops](/category/it-ops/) Tags:[VmWare](/tag/vmware/) Table of Contents * [Prerequisites](#prerequisites) * [Accessing and Viewing vCenter Logs](#accessing-and-viewing-vcenter-logs) * [Identifying Error Logs](#identifying-error-logs) * [Leveraging VMware’s vRealize Log Insight](#leveraging-vmwares-vrealize-log-insight) * [Comparing and Correlating Logs Within vRealize Log Insight](#comparing-and-correlating-logs-within-vrealize-log-insight) * [Creating a Log Management Strategy via vSphere Client](#creating-a-log-management-strategy-via-vsphere-client) * [Optimizing Advanced Log Management Tools](#optimizing-advanced-log-management-tools) * [Conclusion](#conclusion) In the vast virtualization world, VMware vCenter has firmly established its foothold as an indispensable tool for overseeing your virtual environment. But even with its reputation, vCenter occasionally throws a curveball your way. But fear not, because you’re in for a treat in troubleshooting vCenter logs — your ticket to seamless resolution. Throughout this tutorial, you’ll unravel the mysteries within vCenter logs through troubleshooting, employing various methods to collect information. Transform log-related frustrations into a mastery of troubleshooting insights! ## Prerequisites This tutorial comprises hands-on demonstrations. Before diving in, ensure you have the following in place: * VMware vCenter Server (Windows-based or vCenter Server Appliance) – This tutorial uses [VMware vCenter Server Version 8.0.0.10000 Build 20519528](https://kb.vmware.com/s/article/2143838). Related:[Dive Into Managing VMs With VMware vCenter Server](https://adamtheautomator.com/vmware-vcenter-server/) * VMware’s vRealize Log Insight – This tutorial uses [vRealize Log Insight version 8.6.2-21638565](https://docs.vmware.com/en/vRealize-Log-Insight/8.6.2/rn/vRealize-Log-Insight-862.html). * Admin access to the VMware vCenter Server. ## **Accessing and Viewing vCenter Logs** vCenter logs are treasure troves of information, documenting everything happening within your vCenter server. These logs provide insights into the operations, errors, and status messages from your virtual machines (VMs) and other vCenter components. Accessing vCenter logs slightly varies between the Windows-based vCenter Server and the VMware vCenter Server Appliance (VCSA). But in this example, you’ll access the vCenter logs in the VCSA via SSH. To access vCenter logs via SSH, follow these steps: 1\. Open your favorite web browser and log in to your VMware vCenter Server Management interface. ![Logging in to the vCenter Server Management interface](https://adamtheautomator.com/wp-content/uploads/2023/12/image-42.png) Logging in to the vCenter Server Management interface 2\. Next, navigate to **Access** (left pane), then click on **EDIT** (top-right), which opens a dialog box where you can configure access to your VCSA. ![Editing the access settings](https://adamtheautomator.com/wp-content/uploads/2023/12/image-41.png) Editing the access settings 3\. In the **Edit Access Setting** dialog box, toggle **Activate SSH Login** to enable SSH access to your VCSA and **OK** to save the changes. ![Enabling SSH access to VCSA](https://adamtheautomator.com/wp-content/uploads/2023/12/image-40.png) Enabling SSH access to VCSA 4\. Now, launch an SSH client of your choice (i.e., [PuTTY](https://adamtheautomator.com/pageant-putty/) or Command Prompt) and establish an SSH connection to your VCSA. This tutorial uses Command Prompt throughout this section. Related:[Using Pageant Putty Agent to Unleash Your SSH Key Use](https://adamtheautomator.com/pageant-putty/) Ensure you replace the placeholders below accordingly with your appliance’s username and IP address (or hostname). ```bash ssh @ ``` Related:[SSH and PowerShell: Set Up Windows SSH Client](https://adamtheautomator.com/powershell-ssh/) When prompted, provide your password to authenticate the SSH connection. ![Logging in to the VCSA via SSH](https://adamtheautomator.com/wp-content/uploads/2023/12/image-39.png) Logging in to the VCSA via SSH 5\. Once logged in, execute the following commands to navigate (`cd`) to the `/var/log` directory and list (`ls`) its contents (files and directories). ```bash cd /var/log ls ``` Within the _**/var/log**_ directory, you can find logs related to various vCenter components, services, and system activities. > 💡 _For Windows, the logs are found in the following logs directory. `%ALLUSERSPROFILE%\\VMware\\vCenterServer\\`_ Pick one log from the list you wish to view, but this tutorial’s choice is the _/var/log/vmware/vpxd/vpxd.log_. ![Listing all logs in the logs directory (/var/log)](https://adamtheautomator.com/wp-content/uploads/2023/12/image-38.png) Listing all logs in the logs directory (_/var/log_) Related:[Linux Directory Commands : A Complete Guide](https://adamtheautomator.com/linux-directory-commands/) 6\. Execute the below [`cat`](https://www.geeksforgeeks.org/cat-command-in-linux-with-examples/) command to view your preferred log, replacing `` with the log name you noted in step five. ```bash cat ``` Related:[How to Quickly Display Files With PowerShell Cat](https://adamtheautomator.com/powershell-cat/) > _💡 You can also use the `tail` or `less` commands to view the logs._ Understanding vCenter logs is critical for maintaining a healthy and efficient virtual environment. You’ll have raw data to start your investigation by accessing these logs ![Viewing the Log Contents](https://adamtheautomator.com/wp-content/uploads/2023/12/image-37.png) Viewing the Log Contents 7\. Lastly, pick one log entry, like the one below, and familiarize yourself with its structure for better reading and understanding of vCenter logs. A vCenter log entry includes a timestamp, a severity level (info, warn, error, etc.), the module where the log originated, and the log message itself. The above vCenter log consists of the following: * Timestamp (in this case, **2023-11-09T17:20:55.568Z)** – Indicates when the event occurred. The timestamp provides precise information about the time of the event in UTC. * Log Level (**error**, in this case) – Represents the severity level of the log entry, which, in this case, is an error message denoting being unable to read from a file. * Process and PID (**vpxd\[20641\]**, in this case) – Consists of the following:
Processvpxd is the vCenter Server process responsible for this log entry.
Process ID (PID)20641 is a unique identifier for this instance of the vpxd process.
* Thread Information (\[Originator@6876 sub=MoOptionMgr\]) – Contains the following:
OriginatorRefers to the initial point where the operation started.
6876The Thread ID identifies the specific thread handling this operation.
sub=MoOptionMgrAdditional information about the thread or processing pool involved.
* Log Message – A message that describes the specific event or operation that occurred. In this case, an error message below indicates a failure in reading the specified file. **Unable to read from ‘/etc/motd’:N7Vmacore23FileIONotFoundExceptionE(Could not find file : /etc/motd)** ![Viewing vCenter Log Structure](https://adamtheautomator.com/wp-content/uploads/2023/12/image-36.png) Viewing vCenter Log Structure ## **Identifying Error Logs** Coming off the heels of accessing and viewing vCenter logs, you now delve into a crucial aspect of troubleshooting – identifying error logs. Like inspecting file integrity, where silent corruption can lurk beneath the surface, error logs can hide vital clues behind seemingly innocuous messages. To identify error logs, you’ll typically search logs for entries marked as “error” or “warning,” as follows: Navigate into the logs directory (`cd`) where vCenter logs are stored (i.e., _`/var/log/vmware/vpxd`)_, and list (`ls`) the logs. ```bash cd /var/log/vmware/vpxd ls ``` Next, run the below `cat` command to search for `error` or `warning` entries in a specific log file of your choice while ignoring case sensitivity (`-i`). Ensure you replace the `` placeholder with your target log file (i.e., `vpxd.log`). ```bash cat | grep -i 'error' | grep -i 'warning' ``` Related:[Master Grep with Regex and Make Troubleshooting a Breeze](https://adamtheautomator.com/grep-with-regex/) Now, you can pick specific error log entries you wish to review for troubleshooting. ![Viewing error logs and warning details](https://adamtheautomator.com/wp-content/uploads/2023/12/image-43.png) Viewing error logs and warning details ## **Leveraging VMware’s vRealize Log Insight** From uncovering hidden errors within vCenter logs, you can harness a sophisticated tool to elevate your troubleshooting game — vRealize Log Insight. This tool not only pinpoints errors but also conducts a thorough analysis of your vCenter logs. What sets vRealize Log Insight apart is its ability to group similar logs, spotlight common patterns, and offer visualizations for a more comprehensive understanding. To leverage vRealize Log Insight in your vCenter environment, complete the steps below: 1\. Download the .OVA file from the [VMware website](https://customerconnect.vmware.com/downloads/details?downloadGroup=VRLI-862&productId=1204&rPId=81099) and deploy it using the vSphere Web Client. Related:[How to Set Up the VMware vSphere Client (Installable and Web)](https://adamtheautomator.com/vmware-vsphere-client/) ![Accessing the .ova file in the file explorer](https://adamtheautomator.com/wp-content/uploads/2023/12/image-49.png) Accessing the .ova file in the file explorer 2\. During deployment, configure the **Network Properties** for the vRealize Log Insight appliance, as shown below, and click **NEXT**. ![Customizing the networking settings of the Log Insight](https://adamtheautomator.com/wp-content/uploads/2023/12/image-48.png) Customizing the networking settings of the Log Insight 3\. Complete the initial configuration wizard, including the time zone, Network Time Protocol (NTP), and other basic configurations, and click **SAVE AND CONTINUE**. ![Setting up time configuration](https://adamtheautomator.com/wp-content/uploads/2023/12/image-47.png) Setting up time configuration 4\. Provide the IP address or **Hostname** of your vCenter Server, along with appropriate credentials, test the connection, and click **SAVE**. This process connects vRealize Log Insight to your vCenter server. ![Connecting Log Insight with the vCenter server](https://adamtheautomator.com/wp-content/uploads/2023/12/image-46.png) Connecting Log Insight with the vCenter server Depending on your requirements, you may need to download, [install, and configure agents](https://docs.vmware.com/en/vRealize-Log-Insight/8.10/com.vmware.log-insight.agent.admin.doc/GUID-83976956-C16C-42BD-9950-C6EDDF983086.html) on specific servers or VMs to collect logs and send them to vRealize Log Insight. ![Downloading the Log Insights agent for the VMs](https://adamtheautomator.com/wp-content/uploads/2023/12/image-45.png) Downloading the Log Insights agent for the VMs 5\. Now, explore and install relevant **[Content Packs](https://docs.vmware.com/en/vRealize-Log-Insight/8.10/com.vmware.log-insight.user.doc/GUID-AC93DB73-FE9E-44A5-A8E2-03AF4DCDB7EF.html)** in vRealize Log Insight that provide predefined dashboards and queries for various technologies. These technologies span across vCenter, ESXi hosts, and various other VMware products. ![Accessing the Content Pack Marketplace](https://adamtheautomator.com/wp-content/uploads/2023/12/image-44.png) Accessing the Content Pack Marketplace ## Comparing and **Correlating Logs Within vRealize Log Insight** Understanding an issue requires looking at several logs; correlating events from different logs can provide a fuller picture of what transpired. Imagine your virtual machine throwing a fit and refusing to power up. In such cases, you’ve got to peek into logs from the vCenter Server, the ESXi host, and the VM itself. By comparing and correlating information from multiple logs, you’ll uncover the root cause of the problem. To perform correlation and analysis using vRealize Log Insight, carry out the following: 1\. In vRealize Log Insight, navigate to **Interactive Analytics** and set the time range (i.e., **All time**) for log data analysis using the time picker in the query panel, as shown below. This feature lets you leverage the powerful search capabilities to filter and drill down into specific log entries. ![Viewing real-time logs](https://adamtheautomator.com/wp-content/uploads/2023/12/image-55.png) Viewing real-time logs 2\. Next, type in a value in the search query field (i.e., **esxi**) using the Log Insight Query Language (LIQL), add filters (if applicable), and click the search icon to execute a [basic search query](https://docs.vmware.com/en/vRealize-Log-Insight/8.10/com.vmware.log-insight.user.doc/GUID-F494F057-33AF-4378-B5C7-6236EA041679.html). This example searches for log entries related to **esxi**, as shown below. ![Executing a search query](https://adamtheautomator.com/wp-content/uploads/2023/12/image-54.png) Executing a search query 3\. Refine your query by adding more filters to narrow the log data, and use logical operators (AND, OR) to combine multiple conditions. ![Refining the search query](https://adamtheautomator.com/wp-content/uploads/2023/12/image-53.png) Refining the search query 4\. Now, examine log entries to identify common fields or attributes that may serve as correlation points. Look for identifiers like timestamps, transaction IDs, or unique identifiers. ![Correlating two errors](https://adamtheautomator.com/wp-content/uploads/2023/12/image-52.png) Correlating two errors Below are some of the common vCenter log errors and their fixes. | Issue | Details | Fix | | --- | --- | --- | | High Host Memory Usage | This error often arises from insufficient resources. | Check your ESXi host’s CPU and memory utilization and consider migrating some VMs to other hosts to free up resources. | ![Fixing a high host memory usage vCenter error log](https://adamtheautomator.com/wp-content/uploads/2023/12/image-51.png) Fixing a high host memory usage vCenter error log | Issue | Details | Fix | | --- | --- | --- | | VMware vSphere Profile-Driven Storage Service Alarming Health | Indicates a potential issue or warning related to the health of the Profile-Driven Storage Service in your VMware vSphere environment. | Check the status of the Profile-Driven Storage Service to ensure that the service is running and there are no reported errors. Verify that the storage devices are healthy, accessible, and properly configured within vSphere. | ![Fixing a profile-driven storage service alarming health vCenter error log](https://adamtheautomator.com/wp-content/uploads/2023/12/image-50.png) Fixing a profile-driven storage service alarming health vCenter error log ## **Creating a Log Management Strategy via vSphere Client** By comparing and correlating logs, you’ve unveiled the hidden stories behind vCenter’s operational tapestry. Yet, armed with this knowledge, the question arises: what’s the proactive measure to not just uncover but to prevent log-related mysteries in the first place? A robust log management strategy can proactively mitigate potential issues before adversely affecting your environment. This approach involves consistently reviewing logs to identify warnings and errors, configuring alerts for critical events, and archiving older logs to sustain optimal system performance. To create a log management strategy in vCenter, fulfill the following steps: 1\. In the vSphere Client, select your ESXi host, navigate to the **Configure** tab, choose **Advanced System Settings,** and click **EDIT**. A dialog box appears (step two) where you can configure syslog settings for your ESXi hosts to centralize log storage. ![Editing advanced system settings](https://adamtheautomator.com/wp-content/uploads/2023/12/image-58.png) Editing advanced system settings 2\. Next, search for **Syslog.global.logHost** and edit its value to point to your Syslog server, as shown below, and click **OK** to save the changes. This parameter is set to specify a central syslog server (i.e., 192.168.86.135) to collect and store log messages from multiple ESXi Hosts and vCenter servers. ![Setting the Syslog log server](https://adamtheautomator.com/wp-content/uploads/2023/12/image-57.png) Setting the Syslog log server 3\. Edit the advanced system settings on the same ESXi host or vCenter Server again. But this time, search for entries that have the prefix **Config.HostAgent.level**, provide your preferred value, and click **OK**. Note that one of the [valid values](https://docs.vmware.com/en/Site-Recovery-Manager/8.7/com.vmware.srm.admin.doc/GUID-FCD6A4E5-1F56-4B2C-B6B4-28FBC1A390CA.html), **info**, is set by default. This process lets you adjust log levels based on your requirements, which helps manage the volume of logs generated. ![Setting the log level](https://adamtheautomator.com/wp-content/uploads/2023/12/image-56.png) Setting the log level ## Optimizing **Advanced Log Management Tools** Now that you’ve crafted your log management strategy, how can you extract more wealth of information? Optimize advanced log management tools, such as [Loggly](https://www.loggly.com/) or [Splunk](https://www.splunk.com/). These tools can ingest, analyze, and visualize logs, making it easier to spot trends or issues. But in this example, you’ll stick with vRealize Log Insight by creating a custom dashboard and setting up alerts and notifications. Related:[Efficiently Collecting Data With the Splunk Forwarder Agent](https://adamtheautomator.com/splunk-forwarder/) To optimize vRealize Log Insight, continue with the following: 1\. Navigate to the **[Dashboards](https://docs.vmware.com/en/vRealize-Log-Insight/8.10/com.vmware.log-insight.user.doc/GUID-26D795C4-1F7A-493E-AB45-2B336ACAF0D1.html)** section and click **NEW DASHBOARD** to initiate creating a custom dashboard. ![Initiating creating a new custom dashboard](https://adamtheautomator.com/wp-content/uploads/2023/12/image-64.png) Initiating creating a new custom dashboard 2\. Next, provide a dashboard name (i.e., **Log-001**), and click **SAVE** to finalize creating your dashboard. ![Naming the new custom dashboard](https://adamtheautomator.com/wp-content/uploads/2023/12/image-63.png) Naming the new custom dashboard 3\. Once created, navigate to **Interactive Analytics** and click **Add to Dashboard** (top-right) to add widgets to visualize log events on your dashboard. ![Adding widgets to the dashboard](https://adamtheautomator.com/wp-content/uploads/2023/12/image-62.png) Adding widgets to the dashboard 4\. In the dialog box, name your widget, select your preferred dashboard (i.e., **Log-001**) to add the widget, and then click **ADD** to save the changes. ![Naming the widget and selecting the preferred dashboard](https://adamtheautomator.com/wp-content/uploads/2023/12/image-61.png) Naming the widget and selecting the preferred dashboard 5\. Now, navigate to the **Alerts** tab and click **CREATE NEW** to initiate setting up alerts and notifications. ![Creating a new alert and notifications](https://adamtheautomator.com/wp-content/uploads/2023/12/image-60.png) Creating a new alert and notifications 6\. Finally, set up an alert as follows: * Provide a descriptive name for the alert. * Create alert queries based on specific log events or patterns. * Define conditions for triggering alerts. * Click **Save** to finalize setting up the alert. ![Setting up alerts and notifications](https://adamtheautomator.com/wp-content/uploads/2023/12/image-59.png) ## Conclusion On your troubleshooting journey, you walked through the intricacies of vCenter logs and kicked off by mastering the art of accessing and viewing vCenter logs. You’ve learned to identify those elusive error logs and harnessed the power of VMware’s vRealize Log Insight. You also touched on comparing and correlating logs, crafted a strategic approach through the vSphere Client, and even took a deep dive into optimizing advanced log management tools. In a nutshell, you’ve acquired the skills to navigate the labyrinth of vCenter logs and honed your troubleshooting prowess. Now, you can dissect error messages precisely, uncover hidden patterns, and fortify your virtualized environment against potential disruptions. As you step away from this tutorial, consider how you can build on this newfound expertise. Why not automate repetitive processes to save time and increase efficiency in handling logs with scripting languages like PowerShell or Python? Or investigate how your log management tools can integrate with other IT management and monitoring solutions, like ELK Stack or Graylog? Related:[ow to Centralize Log Management with Graylog Docker](https://adamtheautomator.com/graylog-docker/) Share this article [Share on X](https://twitter.com/intent/tweet?url=https%3A%2F%2Fadamtheautomator.com%2Fvcenter-log%2F&text=Unraveling%20Mysteries%3A%20Guide%20to%20Troubleshooting%20vCenter%20Logs)[Share on Facebook](https://www.facebook.com/sharer/sharer.php?u=https%3A%2F%2Fadamtheautomator.com%2Fvcenter-log%2F)[Share on LinkedIn](https://www.linkedin.com/sharing/share-offsite/?url=https%3A%2F%2Fadamtheautomator.com%2Fvcenter-log%2F) ## Related Posts ![](https://adamtheautomator.com/wp-content/uploads/2024/03/vmware-workstation-player.jpg) ### [How to Install VMware Workstation Player on Windows](/vmware-workstation-player/) Discover VMware Workstation Player on Windows, and get your virtual world up and running. 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