Every vSphere known issue in VMware Cloud Foundation 9.1 - Memory Tiering power-on failures, the swap.c:1201 PSOD, ConnectX-7 LAG traffic loss, NFS4ERR_CLID_INUSE and the NetFlow upgrade pre-check - with the exact errors and workarounds.
12 Sep 202612 min
Set up a hardened chrooted SFTP server on CentOS Stream 10 with OpenSSH internal-sftp, key-only auth, firewalld and SELinux - and fix the connection closed and permission denied errors that follow.
12 Sep 20267 min
Build a production NFS server on Ubuntu 26.04 LTS - exports, NFSv4 firewall rules, client mounts - then fix access denied, RPC not registered, stale file handles and nobody:nogroup ownership.
12 Sep 20268 min
Every vSphere bug fixed in VMware Cloud Foundation 9.1 - the bnxtroce unicast drop, ScanTask remediation timeouts, the SPS OutOfMemoryError and the vLCM depot metadata bug - with the exact errors and root causes.
12 Sep 202610 min
Broadcom documents the bugs that took down somebody's cluster. Five real issues from the latest ESXi release notes - the exact error, the root cause and the fix, with the war stories behind them.
12 Sep 202612 min
Install Failed on one host or the whole cluster tells you different things. Read esxupdate.log, clear the real blocker and recover a half-installed transport node without a rebuild.
12 Sep 20268 min
BGP stuck in Active, or Established with no prefixes? Two very different problems. A structured walk from Tier-1 advertisement through Tier-0 redistribution to the physical router.
12 Sep 20268 min
A degraded NSX Manager cluster leaves the data plane running but configuration at risk. Work through cluster status, disk, time, certificates and a clean node rejoin.
12 Sep 20268 min
A DFW rule that looks correct in the UI but does not match in the data path. Use vsipioctl, Traceflow and filter captures to find the rule that really handled the packet.
12 Sep 20269 min
Overlay traffic between hosts stops but NSX looks green. Here is how to read tunnel state, prove TEP reachability at 1600 bytes and find the MTU or BFD fault behind it.
12 Sep 202610 min
APD, PDL and plain latency produce similar symptoms and need completely different responses. Here is how to classify the condition from the logs and recover correctly.
11 Sep 20268 min
Every vSphere known issue in VMware Cloud Foundation 9.1 - Memory Tiering power-on failures, the swap.c:1201 PSOD, ConnectX-7 LAG traffic loss, NFS4ERR_CLID_INUSE and the NetFlow upgrade pre-check - with the exact errors and workarounds.
12 Sep 202612 min
Every vSphere bug fixed in VMware Cloud Foundation 9.1 - the bnxtroce unicast drop, ScanTask remediation timeouts, the SPS OutOfMemoryError and the vLCM depot metadata bug - with the exact errors and root causes.
12 Sep 202610 min
Broadcom documents the bugs that took down somebody's cluster. Five real issues from the latest ESXi release notes - the exact error, the root cause and the fix, with the war stories behind them.
12 Sep 202612 min
Install Failed on one host or the whole cluster tells you different things. Read esxupdate.log, clear the real blocker and recover a half-installed transport node without a rebuild.
12 Sep 20268 min
Set up a hardened chrooted SFTP server on CentOS Stream 10 with OpenSSH internal-sftp, key-only auth, firewalld and SELinux - and fix the connection closed and permission denied errors that follow.
12 Sep 20267 min
Build a production NFS server on Ubuntu 26.04 LTS - exports, NFSv4 firewall rules, client mounts - then fix access denied, RPC not registered, stale file handles and nobody:nogroup ownership.
12 Sep 20268 min
Exim is a great email server that is widely used on Linux servers. Exim commands are often hard to remember, so we decide to help you out with a fine list. It is light-weight, efficient and powerful in dealing with large quantities of emails. We will provide some useful commands to be able to manage […]
17 Mar 20152 min
MySQL Backup script on Linux This tutorial will show you how to setup and configure MySQL backup on your Linux server. The tool is free and easy to configure. Most people don’t realise that they cannot restore using the MySQL data directory (/var/lib/mysql/). We will be doing this setup over SSH using Putty client. Download […]
23 Dec 20142 min
Set up a hardened chrooted SFTP server on CentOS Stream 10 with OpenSSH internal-sftp, key-only auth, firewalld and SELinux - and fix the connection closed and permission denied errors that follow.
12 Sep 20267 min
Build a production NFS server on Ubuntu 26.04 LTS - exports, NFSv4 firewall rules, client mounts - then fix access denied, RPC not registered, stale file handles and nobody:nogroup ownership.
12 Sep 20268 min
Exim is a great email server that is widely used on Linux servers. Exim commands are often hard to remember, so we decide to help you out with a fine list. It is light-weight, efficient and powerful in dealing with large quantities of emails. We will provide some useful commands to be able to manage […]
17 Mar 20152 min
You may have come across one of the following errors: 500 Internal Server Error while accessing cPanel and WHM No response from subprocess (whostmgr (cpanel)): subprocess was killed with signal 7 This is usually due to one of the cPanel process failing to load or still running in the background. First login to your VPS […]
23 Jan 20151 min
