List kernels:
$ egrep ^menuentry /etc/grub2.cfg | cut -f 2 -d \'
CentOS Linux (3.10.0-327.10.1.el7.x86_64) 7 (Core)
CentOS Linux (3.10.0-327.4.5.el7.x86_64) 7 (Core)
CentOS Linux (3.10.0-327.3.1.el7.x86_64) 7 (Core)
CentOS Linux (3.10.0-229.20.1.el7.x86_64) 7 (Core)
CentOS Linux (3.10.0-123.9.3.el7.x86_64) 7 (Core)
CentOS Linux, with Linux 0-rescue-45461f76679f48ee96e95da6cc798cc8
Set kernel to the fourth:
$ grub2-set-default 3
To assign the eth0 network interface temporarily to the internal zone, type:
$ firewall-cmd --zone=internal --change-interface=eth0
success
To assign the eth0 network interface permanently to the internal zone (a file called internal.xml is created in the /etc/firewalld/zones directory), type:
$ firewall-cmd --permanent --zone=internal --change-interface=eth0
success
Source: RHEL7: How to get started with Firewalld. – CertDepot
Firewalld is a complete firewall solution available by default on CentOS and Fedora servers. In this guide, we will cover how to set up a basic firewall for your server and show you the basics of managing the firewall with firewall-cmd, its command-li
Source: How To Set Up a Firewall Using FirewallD on CentOS 7 | DigitalOcean
If you got the following error in Jenkins output using rsync:
Running "shell:sync" (shell) task
Host key verification failed.
rsync: connection unexpectedly closed (0 bytes received so far) [sender]
rsync error: error in rsync protocol data stream (code 12) at io.c(605) [sender=3.0.9]
Warning: Command failed: Host key verification failed.
rsync: connection unexpectedly closed (0 bytes received so far) [sender]
rsync error: error in rsync protocol data stream (code 12) at io.c(605) [sender=3.0.9]
Use --force to continue.
Try the following:
su -s /bin/bash jenkins, since Jenkins install doesn’t have login shell by default on CentOSyesCentOS version. You should edit sudoers file:
First add jenkins as sudoer without password:
jenkins ALL= NOPASSWD: ALL
Then disable requiretty:
Defaults !requiretty
6 升级到 6.1 后安装 git 报错：
root@dad:/# yum install git
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: mirror.nsc.liu.se
* epel: ftp.riken.jp
* extras: mirror.nsc.liu.se
* ius: pancks.sothatswhy.org.uk
* rpmforge: ftp-stud.fht-esslingen.de
* updates: centosu.centos.org
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package git.i386 0:1.7.6.4-1.el5.rf will be installed
--> Processing Dependency: perl-Git = 1.7.6.4-1.el5.rf for package: git-1.7.6.4-1.el5.rf.i386
--> Processing Dependency: libcurl.so.3 for package: git-1.7.6.4-1.el5.rf.i386
--> Processing Dependency: libexpat.so.0 for package: git-1.7.6.4-1.el5.rf.i386
--> Processing Dependency: perl(Git) for package: git-1.7.6.4-1.el5.rf.i386
--> Running transaction check
---> Package compat-expat1.i686 0:1.95.8-8.el6 will be installed
---> Package git.i386 0:1.7.6.4-1.el5.rf will be installed
--> Processing Dependency: libcurl.so.3 for package: git-1.7.6.4-1.el5.rf.i386
---> Package perl-Git.i386 0:1.7.6.4-1.el5.rf will be installed
--> Finished Dependency Resolution
Error: Package: git-1.7.6.4-1.el5.rf.i386 (rpmforge)
Requires: libcurl.so.3
You could try using --skip-broken to work around the problem
You could try running: rpm -Va --nofiles --nodigest
解决方案：编辑 /etc/yum.repos.d/rpmforge.repo，开启 extra repo
再次执行后：
... Running rpm_check_debug Running Transaction Test Transaction Test Succeeded Running Transaction Warning: RPMDB altered outside of yum. Installing : git-1.7.6.4-1.el6.rfx.i686 1/2 Installing : perl-Git-1.7.6.4-1.el6.rfx.i686 2/2 Installed: git.i686 0:1.7.6.4-1.el6.rfx Dependency Installed: perl-Git.i686 0:1.7.6.4-1.el6.rfx Complete!
解决方案（来源）：
yum clean all
东拼西凑，备忘属性很多，总之 CentOS 上跑 rtorrent 做 seedbox 大体需要以下这些：