Today my friend upgraded some nodes and a small part of them failed to boot after the upgrade. He ch...
Some nodes failed to boot after kernel batch upgrade
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Fixed the issue that Catalina could not install further update
My MBP was upgraded to Catalina 10.15 several months ago and I almost did not encounter any issue un...
Unable to login after vCenter was updated
These days we patched the vCenter nodes to 41000 and one of them failed to login after the update. T...
Failed to boot after kernel upgrade
Last night we upgraded some servers and one of them could not be accessed using SSH. I checked it on...
Archivelog backups were not removed per backup policy
Suddenly our support guys found some archivelog backups were not deleted even they were not needed b...
Moved site to Aliyun International
HostKVM is a great VPS provider and I got almost perfect service from it! Every time I got any issue...
segfault and error 4 in libc-2.12.so
These days I helped to troubleshoot a RedHat Cluster issue. When we run command 'service cman start'...
Multiple version issue of glibc-common package on RHEL systems
These days we are doing some maintenance tasks on hundreds of RHEL servers and we update them using ...
How to display the obsoleted packages and versions of a RPM?
These days I patched some servers using a standard script and it run successfully on most nodes unti...
Talking about ‘recovery window of 7 days’
Sometimes we will keep the database backup for one week and set the retention policy to 'recovery wi...
