CentOS下更换yum源
首先进入yum源配置目录
cd /etc/yum.repos.d备份系统自带的yum源
mv CentOS-Base.repo CentOS-Base.repo.bk根据 wiki.ubuntu.org.cn/源列表 的镜像地址列表,找一个喜欢的镜像源。
http://mirrors.aliyun.com/
http://mirrors.aliyun.com/help/centos
下载新的CentOS-Base.repo
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repoyum clean all
yum makecache #生成缓存yum更换源后,发现redis都下不了
这是因为缺少了扩展包 EPEL(Extra Packages for Enterprise Linux),可以用 yum repolist 命令检查下。
安装epel包
rpm -ivh http://mirrors.aliyun.com/epel/6Server/i386/epel-release-6-8.noarch.rpm也可以用这个http://mirrors.aliyun.com/repo/epel-6.repo
repolist检查下：
[root@dev4svn /]# yum repolist
Loaded plugins: fastestmirror, refresh-packagekit, security
Loading mirror speeds from cached hostfile
* base: mirrors.aliyun.com
* epel: mirror01.idc.hinet.net
* extras: mirrors.aliyun.com
* updates: mirrors.aliyun.com
repo id reponame
base CentOS-6 - Base - mirrors.aliyun.com
epel Extra Packages for Enterprise Linux 6 - i386
extras CentOS-6 - Extras - mirrors.aliyun.com
updates CentOS-6 - Updates - mirrors.aliyun.com
repolist: 15,572有Extra Packages for Enterprise Linux 6 - i386 表示EPEL安装好了
[root@dev4svn /]# find / -name "redis*"
/etc/yum.repos.d/redis-2.8.19-2.el7.x86_64.rpm
/etc/redis.conf
/etc/logrotate.d/redis
/etc/rc.d/init.d/redis
/usr/share/doc/redis-2.4.10
/usr/bin/redis-benchmark
/usr/bin/redis-check-dump
/usr/bin/redis-cli
/usr/bin/redis-check-aof
/usr/sbin/redis-server
/var/run/redis
/var/log/redis
/var/lib/redis测试一下redis
reids-server /etc/redis.conf
redis-benchmark -h localhost -p 6379 -c 100 -n 100000
#100个并发连接，100000个请求，检测host为localhost 端口为6379的redis服务器性能RedHat使用CentOS源
删除redhat原有的yum
rpm -aq|grep yum|xargs rpm -e --nodeps 下载CentOS的yum安装文件
wget http://mirrors.aliyun.com/centos/6/os/x86_64/Packages/python-iniparse-0.3.1-2.1.el6.noarch.rpm
wget http://mirrors.aliyun.com/centos/6/os/x86_64/Packages/yum-metadata-parser-1.1.2-16.el6.x86_64.rpm
wget http://mirrors.aliyun.com/centos/6/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.30-30.el6.noarch.rpm
wget http://mirrors.aliyun.com/centos/6/os/x86_64/Packages/yum-3.2.29-69.el6.centos.noarch.rpm安装CentOS的yum
rpm -ivh python-iniparse-0.3.1-2.1.el6.noarch.rpm
rpm -ivh yum-metadata-parser-1.1.2-16.el6.x86_64.rpm
rpm -ivh yum-plugin-fastestmirror-1.1.30-30.el6.noarch.rpm yum-3.2.29-69.el6.centos.noarch.rpm
#最后两个包必需同时安装，否则会相互依赖 更新yum源文件
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo
cd /etc/yum.repos.d
cp rhel-source.repo rhel-source.repo.back
vi rhel-source.repo把文件里面的$releasever全部替换为版本号，即6 最后保存。
# CentOS-Base.repo
#
# The mirror system uses the connecting IP address of the client and the
# update status of each mirror to pick mirrors that are updated to and
# geographically close to the client. You should use this for CentOS updates
# unless you are manually picking other mirrors.
#
# If the mirrorlist= does not work for you, as a fall back you can try the
# remarked out baseurl= line instead.
#
#
[base]
name=CentOS-6 - Base - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos/6/os/$basearch/
http://mirrors.aliyuncs.com/centos/6/os/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=6&arch=$basearch&repo=os
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-6
#released updates
[updates]
name=CentOS-$releasever - Updates - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos/6/updates/$basearch/
http://mirrors.aliyuncs.com/centos/6/updates/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=6&arch=$basearch&repo=updates
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-6
#additional packages that may be useful
[extras]
name=CentOS-$releasever - Extras - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos/6/extras/$basearch/
http://mirrors.aliyuncs.com/centos/6/extras/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=6&arch=$basearch&repo=extras
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-6
#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-6 - Plus - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos/6/centosplus/$basearch/
http://mirrors.aliyuncs.com/centos/6/centosplus/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=6&arch=$basearch&repo=centosplus
gpgcheck=1
enabled=0
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-6
#contrib - packages by Centos Users
[contrib]
name=CentOS-6 - Contrib - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos/6/contrib/$basearch/
http://mirrors.aliyuncs.com/centos/6/contrib/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=6&arch=$basearch&repo=contrib
gpgcheck=1
enabled=0
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-6更新yum源
yum update
rpm -ivh http://mirrors.aliyun.com/epel/6Server/i386/epel-release-6-8.noarch.rpm