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…
Gentoo building qtgui error – g++-v8/cstdlib:75:15: fatal error: stdlib.h: No such file or directory
Most cases this error happens after you updated the GNU GCC (this update triggers the error, but it might be not the problem)! This was…
Update supermicro X10SLM-F firmware BIOS under Linux with the SUM cli
Here is how we updated our Supermicro server X10SLM-F with the latest firmware at the moment. Our current BIOS firmware version is 2.0
portage is blocked by “the current version of portage supports EAPI ‘6’. You must upgrade”
We’ve synced the portage tree before upgrading our old portage package (big mistake! always upgrade the portage package before sync) and then do the sync….
pycurl.h: fatal error: openssl/ssl.h: No such file or directory
If you encounter this error trying to install a pip module or compile a program under the console you surely miss OpenSSL development packages! pip…