Linux system DNS error resolution
CentOS, Euleros series operating systems: ping the public network domain name fails, prompting Name or service not known, but you can ping the elastic public network IP, CURL is the same
Linux
tar package compression and decompression
The Linux tar (English full spelling: tape archive) command is used to back up files. tar is a tool program used to create and restore backup files. It can add and unlock files in the backup file
CentOS7 Docker CE online installation
Docker CE supports the 64-bit version of CentOS 7, and requires the kernel version to be at least 3.10. CentOS 7 meets the minimum kernel requirements, but due to the relatively low kernel version, some functions (such as overlay2 storage layer driver) cannot be used, and some functions may not be stable
CentOS 6.8 YUM configuration Alibaba Cloud source
Have you encountered using yum to install software as slow as a turtle? The default system uses centos mirror source, we can modify it to accelerate the domestic mirror source
CentOS 6.x installation gcc-c++ conflict resolution with the original version
Package gcc-c++.i686 0:4.4.7-11.el6 will be installed, Package gcc-c++.i686 0:4.4.7-11.el6 will be installed...
How to choose a server system: CentOS, Ubuntu, Debian
These versions have different characteristics and play different roles in different application fields, so they cannot be generalized. And most VPS only provide release versions maintained by the open source community
TCPing port connection debugging tool
In general, the IP of our Ping server is only the delay obtained by the ICMP protocol transmission, and some IDCs will optimize the ICMP delay very well. In fact, it is exposed by testing with TCPing.
CentOS7 install update security patch
System administrators usually only care about the security update part of the system when upgrading the system, and the upgrade of pure software version does not need to be rooted, because upgrading them may cause unpredictable problems. We only install the security update part of the system update.
【Docker + Selinux】 Can't Open / Permission denied
The main solution is how to configure `docker` security in the environment where `selinux` is turned on, as well as common error solutions. It is not blindly `chmod -R 777`,`--privileged=true`,`setenforce 0` , But focus on using the `selinux` security strategy
How does Linux determine whether Crontab is running normally?
In the process of our development, we often encounter situations where scheduled tasks are not executed as expected. In the Linux system, timing tasks are generally implemented by the system Crontab. This article discusses how to judge whether the Crontab is running normally.