Common Linux operations

Common Linux operations
Modify the virtual Nic Interface Name

1. Edit the grub configuration file "/etc/sysconfig/grub": Add a "net. ifnames = 0 biosdevname = 0" in the "GRUB_CMDLINE_LINUX" variable.

GRUB_CMDLINE_LINUX="crashkernel=auto rd.lvm.lv=centos/root rd.lvm.lv=centos/swap rhgb quiet net.ifnames=0 biosdevname=0"

2. regenerate grub configuration and update Kernel Parameters

[root@localhost ~]# grub2-mkconfig -o /boot/grub2/grub.cfg

3. Add udev rules: vim/etc/udev/rules. d/70-persistent-net.rules

 ACTION=="add", SUBSYSTEM=="net", DRIVERS=="?*", ATTR{type}=="1", ATTR{address}=="00:0c:29:ec:72:43", NAME="eth0",KERNEL=="eth*"

4. Shutdown and restart

Enable and disable firewall in Redhat Linux 7

1. view the Firewall Status

[root@localhost /]# systemctl status firewalld

2. temporarily shut down the firewall, restart the computer, and recover again.

[root@localhost /]# systemctl stop firewalld

3. permanently disable the firewall and restart the computer.

[root@localhost /]# systemctl disable firewalld

4. Enable Firewall

[root@localhost /]# systemctl enable firewalld

The following error occurs when installing nginx:

Operation: Execute./configure -- prefix =/usr/local/nginx and then make.

Error: make: *** no rule can be used to create the target "build" required by "default ". Stop.

Solution: yum-y install pcre-devel openssl-devel and then make.

Summary

This article is about continuous updates, because there will always be some problems in the use or development process. At that time, I solved the problem and forgot it after a while. As the saying goes, it's good, this is an article inherent in the bad notes.

The following is your favorite summary. The content is as follows:

1. I hope to keep an eye on my other articles.

2. Are there any clear instructions in the blog, or you have a better way? Join the two chat groups in the upper left corner to study and discuss them together.