Knowledge Base

• KB0021

  Enable Radius Authentication for Comware 7

  Posted on 30 October, 2023 by: Stephen Schwetz

  I have over the course of my employment on numerous occasions needed to add radius authentication to comware based switches and routers. This is the current comware 7 template that I use for this 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16... [Read More]

  Tags:

  • linux
  • python
  • processes
  • resources

• KB0020

  Sort Processes by Resource Usage

  Posted on 23 August, 2023 by: Stephen Schwetz

  I have had the requirement before to list the resources processes used on a Linux box. I found the following script online but could not get the original author’s details. So, if this is yours, please reach out Usage 1 ./python3.6 sum_process_resources.py Output 1 2 3 4 5 6 7... [Read More]

  Tags:

  • linux
  • python
  • processes
  • resources

• KB0018

  Back up and restore vCenter Server Appliance vPostgres database

  Posted on 23 August, 2023 by: Stephen Schwetz

  

  

  This article provides information for backing up and restoring the embedded vPostgres database for vCenter Server or vCenter Server Appliance. This process can be used when uninstalling the vCenter Server to prevent data loss due to the uninstalled database. For versions before 6.x, see Backing up and restoring the vCenter... [Read More]

• KB0017

  vCenter - Signing certificate is not valid

  Posted on 23 August, 2023 by: Stephen Schwetz

  

  

  In an environment with a vCenter Server Appliance (VCSA) 6.5.x, 6.7.x or vCenter Server 7.0.x, you experience these symptoms: The vmware-vpxd service fails to start. Logging in to the vSphere Client fails with the error: 1 HTTP Status 400 – Bad Request Message BadRequest, Signing certificate is not valid In... [Read More]

  Tags:

  • vcenter
  • esx
  • vmware
  • certificate

• KB0016

  Could not connect to one or more vCenter Server Systems: "https://vCenterFQDN:443/sdk" error in the vSphere Client

  Posted on 23 August, 2023 by: Stephen Schwetz

  

  

  Symptoms vCenter service becomes unresponsive randomly In the vpxd.log(/var/log/vmware/vpxd)file, you see entries similar to: 1 2 2020-04-14T12:59:58.853-06:00 error vpxd[10382] [Originator@6876 sub=HTTP session map] Out of HTTP sessions: Limited to 2000 2020-04-14T12:59:58.869-06:00 error vpxd[10395] [Originator@6876 sub=HTTP session map] Out of HTTP sessions: Limited to 2000 Session exhaust could be due to... [Read More]

  Tags:

  • vcenter
  • vmware
  • esx
  • crashes
  • unresponsive

• KB0015

  Avoiding Password Expiry in NSX Manager and Edges

  Posted on 23 August, 2023 by: Stephen Schwetz

  

  

  To avoid automatic password expiry for root, audit and admin users on both NSX manager and Edges we can set the password expiry to 9999 days. This is better than disabling password expiry altogether as some checks later might require password expiry to be enabled. SSH to the manager using... [Read More]

  Tags:

  • nsx
  • vmware
  • edge node
  • manager
  • passwords

• KB0014

  Using iperf3 to Troubleshoot Network Speed Issues

  Posted on 23 August, 2023 by: Stephen Schwetz

  

  

  iPerf3 is a tool for actively measuring the maximum achievable bandwidth on IP networks. It supports tuning various parameters related to timing, buffers and protocols (TCP, UDP, SCTP with IPv4 and IPv6). It reports the bandwidth, loss, and other parameters for each test. Note: This new implementation shares no code... [Read More]

  Tags:

  • iperf
  • networking
  • speedtest
  • knowledgebase

• KB0013

  Creating .pcap Files with tcpdump for Wireshark Analysis

  Posted on 23 August, 2023 by: Stephen Schwetz

  It’s often more helpful to capture packets using tcpdump rather than wireshark, as it is available as a package in most Linux and BSD package managers. For example, you might want to do a remote capture and either don’t have GUI access or don’t have Wireshark installed on the remote... [Read More]

  Tags:

  • tcpdump
  • wireshark
  • linux
  • macos

• KB0012

  Scheduled Reboot with HPE Comware

  Posted on 23 August, 2023 by: Stephen Schwetz

  

  

  Most network engineers that are familiar with cisco equipment are aware that you can schedule a reboot (reload). HPE Comware offers this facility in current v5 and v7 release trains. Comware 5 For Comware, the command used is schedule: To reboot a system at a specific time the command is... [Read More]

  Tags:

  • knowledge base
  • hpe
  • aruba
  • comware

• KB0011

  Edge Node Sizing Guide

  Posted on 23 August, 2023

  

  

  Appliance Size **Memory ** vCPU **Disk Space ** VM Hardware Version Notes NSX Edge Small 4 GB 2 200 GB 11 or later (vSphere6.0 or later) Proof-of-concept deployments only. Note:L7 rules for firewall, load balancing and so on are not realized on a Tier-1 gateway if you deploy a small... [Read More]

  Tags:

  • nsx
  • vmware
  • routing

• Older Posts →

subscribe via RSS