Dell Openmanage DNS Records for Server Initiated Discovery (with Microsoft DNS)

OpenManage Enterprise version 3.4 allows automatic discovery of servers that have iDRAC firmware version 4.00.00.00 or later. The appliance can be configured to allow these servers to automatically locate the console by querying the DNS and initiate their discovery. The instructions (and this) give the use of the TUI or manual creation for Dell Openmanage … Read more

Robocopy to Copy Files with Permissions and Ownership

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 … Read more

Putty.exe – “Couldn’t agree a key exchange algorithm”

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. … Read more

Raspberry Pi Time Synch

The Raspberry Pi lacks a real time clock, which means that the time can drift, so much so that NTP fails to update the software clock because its skewed so much. To resolve this you can do the following: Add this to /etc/ntp.conf: tinker panic 0 That will cause ntpd to sync despite the large … Read more