Yesterday my colleague reported a software issue to me. I checked the application logic, but couldn’t find any clue. However, because the software hasn’t been touched for a long time and has passed the testing in the last release, I… Read More
fix ‘could not connect to display’ issue
Today I tried to run foxit reader installer in my Ubuntu Linux as root account. I got the below error message: QXcbConnection: Could not connect to display After struggling for a while, I found the below solution that fix this… Read More
disable password prompt for sudo in ubuntu
After using ubuntu Linux in my xiaomi laptop for months, I find the password prompt really annoying when I try to switch to root account by running the command ‘sudo su -‘. After checking the manual page of ‘sudoers’, I… Read More
find package owning a specific file in ubuntu
I am familiar with the rpm package management system, because the products in our company are running in the RHEL Linux OS and the development in my daily work sometimes involves manipulating rpm packages, for example, installing, uninstall, searching rpm… Read More
package selection in rhel6 and rhel7 kickstart
Recently our product is migrating from rhel6 to rhel7. During this process, we encountered a wired issue that some rpm packages couldn’t be installed during Linux installation. We are using a customized rhel iso, which is originally downloaded from redhat… Read More
在RHEL7上搭建kubernetes 1.11集群
在RHEL7的虚拟机上搭建一个kubernetes 1.11集群，环境如下 master: 192.168.10.1 node1: 192.168.10.2 node2: 192.168.10.3