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Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for May 21st, 2021

MacOS: when “Command-Tab” does not work (no visual response, no application switching) you need to restart the Dock

Posted by jpluimers on 2021/05/21

Based on [WayBack] Command-Tab Not working….. – Apple Community

If you go to Activity monitor and search for dock, doubleclick on it, choose Force quit.
It will restart the Dock app and now it should work.

I wrote this alias which restarts Dock (including Dashboard and Spaces as they are served by the same process).

alias restart-dock-dashboard-spaces='killall -KILL Dock'

Related: my 2013 post Mac: Restarting the Mac OS X Dock, Finder, Spaces or Menubar | Stefan Ernst.

–jeroen

Posted in Apple, iMac, Mac, Mac OS X / OS X / MacOS, MacBook, MacBook Retina, MacBook-Air, MacBook-Pro, MacMini, macOS 10.12 Sierra, macOS 10.13 High Sierra, OS X 10.10 Yosemite, Power User | Leave a Comment »

LGA 2011 – remove and insert a CPU

Posted by jpluimers on 2021/05/21

I while ago I needed to upgrade a processor in a LGA 2011  socket

If you know what the icons mean they are simple.

  • The (1) lock on the top left means that lever (with the triangle bend in it) needs to be done first when locking
  • The (1) unlock on the bottom right means that lever (with the rounded end) needs to be done first when unlocking

More details at:

–jeroen

Read the rest of this entry »

Posted in Hardware, Mainboards, Power User | Leave a Comment »

How to Copy files between ESXi hosts using SCP Command

Posted by jpluimers on 2021/05/21

Derived the bits below from [WayBack] How to Copy files between ESXi hosts using SCP Command.

Recursive copy from a remote machine to an existing local directory:

scp -rp root@192.168.71.97://vmfs/volumes/EVO860_500GB/VM1/ /vmfs/volumes/EVO860_250GB/VM2/

After this you need to edit the .vmxf files in the VM2 directory to ensure these are not duplicates.

One thing to remember is that you need the current host to allow the SSH client in the firewall, which is disabled by default:

After enabling:

Be really careful with the -3 option to scp; it allows you to transfer from one remote machine to another remote machine, but when using keyboard-interactive, you have a high change to lock-out your accounts: SSH will try to keyboard-interactive to both hosts at the same time.

If you lock-out root, then you have to go through the local DCUI console (use ALT-F2 to go there), then reset the root account failure count using pam_tally2 --user root --reset.

So this can be bad:

scp -3 -rp root@192.168.71.97://vmfs/volumes/EVO860_500GB/VM1/ root@192.168.71.91://vmfs/volumes/EVO860_250GB/VM2/

This works, but assumes the SSH client is enabled from the first host:

scp -rp root@192.168.71.97://vmfs/volumes/EVO860_500GB/VM1/ root@192.168.71.91://vmfs/volumes/EVO860_250GB/VM2/

See these links:

 

[root@ESXi-X9SRI-F:~] esxcli network firewall get
   Default Action: DROP
   Enabled: true
   Loaded: true
[root@ESXi-X9SRI-F:~] esxcli network firewall ruleset list --ruleset-id sshClient
Name       Enabled
---------  -------
sshClient    false
[root@ESXi-X9SRI-F:~] esxcli network firewall ruleset set --ruleset-id sshClient --enabled true
[root@ESXi-X9SRI-F:~] esxcli network firewall ruleset list --ruleset-id sshClient
Name       Enabled
---------  -------
sshClient     true
[root@ESXi-X9SRI-F:~] esxcli network firewall ruleset set --ruleset-id sshClient --enabled false
[root@ESXi-X9SRI-F:~] esxcli network firewall ruleset list --ruleset-id sshClient
Name       Enabled
---------  -------
sshClient    false

–jeroen

Posted in *nix, *nix-tools, ESXi6, ESXi6.5, ESXi6.7, Power User, ssh/sshd, Virtualization, VMware, VMware ESXi | Leave a Comment »

 
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