The ramblings of a computer geek
How do you name your VMware datastores? Its an interesting question, how much information do you want to convey? Do you want to give a system administrator some idea of the data protection provided by the underlying storage perhaps? Or some idea of the location? There’s lots to think about, but also simplicity can be […]
More...If you need to copy files from one storage location to another Robocopy is a great tool, but like every great tool it comes with loads of options. In this scenario I was needing to copy a directory structure (and all the files) from one location to another but preserving all the permissions, ownership and […]
More...I had this issue today, on a host that had recently had a software upgrade. Problem: A host to which I was connecting with SSH gave this error: “Couldn’t agree a key exchange algorithm (available: Curve25519-sha256@libssh.org, ECDH-sha2-nistp521, ECDH-sha2-nistp384, ECDH-sha2-nistp256)”. Solution: In my case I updated to a later release of Putty.exe and the issue was resolved. […]
More...So it appears that there is a vulnerability identified in Microsoft Windows machines running Active Directory, this is covered on the Register: https://www.theregister.com/2021/06/30/windows_print_spool_vuln_rce/ Until you patch this you can just disable the “Printer Spooler” service on your Domain Controllers and well to be honest you don’t need this running on the Domain Controller anyway. Edit: […]
More...I had an issue where I could not vMOTION a powered off Virtual Machine. This virtual machine was quite large 1.2TB in total of disks attached. The VM was powered off and needed to be moved to some archive storage all on VMFS. When attempting to move it would start moving and after around 50 […]
More...So you have a Python script (for example), and you need to store some access credentials for an API it accesses (for example), now you could put the username and password in the script. There’s lots of reasons not to do this however, a key one being that if you are using a version control […]
More...If you try to monitor a cloudflare fronted website with NagiosXI check_http you may get this: After much fiddling found that if you formulate the check string as: You’ll get a result like this, which is what we want! You need to use this: Enable SSL/TLS hostname extension support (SNI) The SNI is Server Name […]
More...https://microk8s.io/docs/registry-images So images. A container is based on an image. You can pull these images in from the outside world, e.g. from a Public, Private registry, or from the built-in registry. For this copy the “hello-python” directory we created in Part 2 into one called “hello-python3”, you can delete the .tar file in there for […]
More...Well Part 2 was very long, so lets have a shorter one and cover how you can adjust your application on the fly and add the other worker nodes to the cluster. Updating an Application or Service on the Fly Kubernetes is a system whereby you declare what you want the “world” to look like, […]
More...Log onto your master node via SSH. We’re going to build an image and then deploy it, so as a developer you’d probably be developing on your own machine possibly running docker locally to test how your containers work before deploying the code to a repository where it can then be applied to a production […]
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