Finally, we do not have any more MySQL 5.6 servers. We upgraded our last part of the system with MySQL 5.6 to 5.7. In our…
Update Supermicro BMC/IPMI Firmware – under Linux console
Here you will see our log of upgrading the Supermicro IPMI firmware with the cli tool included in the firmware package for your IPMI unit…
Update supermicro X10SLH-F firmware BIOS under Linux with the SUM cli
As you can see our product is: product: X10SLH-F/X10SLM+-F The same string is in our KVM IPMI: “Product Name: X10SLH-F/X10SLM+-F” and in the BIOS, but…
Tune nginx proxy cache – control the cache manager how to delete cached files
In most cases you’ll never want to modify the default settings for deleting cache items with proxy_cache_path directives. The problem is in a peak the…
how to disable effectively the deleting (purging) files from nginx proxy_cache (nginx cache manager process)
In peaks deleting files could kill your server and easily the traffic could degraded multiple times than normal if the nginx cache manager start deleting…
Check whether nginx cache manager is deleting files at the moment
Here is a tip for the webmasters (or system admins) to discover whether the nginx using proxy_cache to cache files is deleting files at the…
Centos 7 Server hangs up on boot after deleting a software raid (mdadm device)
We have a CentOS 7 server with a simple two hard drives setup in RAID1 of total 4 devices for boot, root, swap and storage….
mysql – Error ‘Your password does not satisfy the current policy requirements’ or zero length mysql password
We got this error when granting permissions for one of our new slave server (it could be for an ordinary MySQL server, too): It appeared…
mysql – Error ‘Column count of mysql.user is wrong. Expected 45, found 43. The table is probably corrupted’ on query.
If you upgraded your MySQL server (from 5.6 to 5.7 or above) or imported a MySQL dump SQL file from older version than your current…
Supermicro server cannot enter BIOS with F2, DEL or other when UEFI mode OS is installed
If you happen to have a supermicro server (X10SLH-F) and install Linux in UEFI mode in our case CentOS 7 and you want to enter…