解决RedHat中yum命令未注册问题

RHEL6解决无法使用YUM源问题 RHEL的YUM源需要注册用户才能更新使用，由于CentOS和RHEL基本没有区别，并且CentOS已经被REHL收购。所以将RHEL的YUM源替换为CentOS即可。 问题如下： [root@bogon ~]# yum repolist Loaded plugins: product-id, refresh-packagekit, security, subscription-manager This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register. repolist: 0 或者# yum install ntp Loaded plugins: product-id, refresh-packagekit, security, subscription-manager This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register. Setting up Install Process Nothing to do 解决方法： 1.清除原有RHEL的YUM及相关软件包。 rpm -qa | grep yum | xargs rpm -e --nodeps rpm -qa |grep python-urlgrabber|xargs rpm -e --nodeps 2.下载centos6的相关软件包。 wget http://mirrors.163.com/centos/6/os/x86_64/Packages/yum-3.2.29-73.el6.centos.noarch.rpm wget http://mirrors.163.com/centos/6/os/x86_64/Packages/yum-metadata-parser-1.1.2-16.el6.x86_64.rpm wget http://mirrors.163.com/centos/6/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.30-37.el6.noarch.rpm wget http://mirrors.163.com/centos/6/os/x86_64/Packages/python-iniparse-0.3.1-2.1.el6.noarch.rpm wget http://mirrors.163.com/centos/6/os/x86_64/Packages/python-urlgrabber-3.9.1-11.el6.noarch.rpm *注释:这些软件包的具体的版本，请到http://mirrors.163.com/centos/6/os/x86_64/Packages/ 目录下，选择下载上述软件包。网上很多文章没法直接使用就是因为软件包的版本问题。 3.安装软件包。 rpm -ivh python-iniparse-0.3.1-2.1.el6.noarch.rpm rpm -ivh python-urlgrabber-3.9.1-11.el6.noarch.rpm rpm -ivh yum-metadata-parser-1.1.2-16.el6.x86_64.rpm rpm -ivh yum-plugin-fastestmirror-1.1.30-37.el6.noarch.rpm yum-3.2.29-73.el6.centos.noarch.rpm *注释yum-plugin-fastestmirror和yum-3.2.29要一起安装。 如果按照遇到问题：发现错误，python-urlgrabber版本必须大于等于3.9.1-10  # rpm -ivh  yum-3.2.29-73.el6.centos.noarch.rpm yum-plugin-fastestmirror-1.1.30-37.el6.noarch.rpm warning: yum-3.2.29-73.el6.centos.noarch.rpm: Header V3 RSA/SHA1 Signature, key ID c105b9de: NOKEY error: Failed dependencies:     python-urlgrabber >= 3.9.1-10 is needed by yum-3.2.29-73.el6.centos.noarch 查看系统的python信息 # rpm -qa|grep python 发现python-urlgrabber-3.9.1-9.el6.noarch 版本低于3.9.1-10 

卸载：python-urlgrabber-3.9.1-9.el6.noarch

 rpm -e python-urlgrabber-3.9.1-9.el6.noarch

如果卸载不了的话，可以试试升级python版本

rpm -Uvh python-urlgrabber-3.9.1-11.el6.noarch.rpm

安装：rpm -ivh python-urlgrabber-3.9.1-11.el6.noarch.rpm 安装yum # rpm -ivh yum-* 更改yum源 cd /etc/yum.repos.d/ 下载配置文件 wget http://mirrors.163.com/.help/CentOS6-Base-163.repo 将此配置文件替换/etc/yum.repos.d同名文件 sed -i "s;\$releasever;6;g" CentOS6-Base-163.repo mv rhel-source.repo rhel-source.repo.bak 或者编辑配置文件 #vim CentOS-Base.repo 把$releasever替换成现有系统的版本号(6) vim替换命令 ：%s/$releasever/6/g 退出保存 清理yum缓存 #yum clean all 将服务器软件包信息缓存至本地，提高搜索安装效率 #yum makecache 测试 #yum search vim 执行yum repolist查看，如果显示出repo仓库列表，并显示软件包数量则OK。（或者使用yum makecache） 6.使用yum安装软件包测试。 yum -y install lrzsz 至此，如果不出现意外，lrzsz软件包安装成功。yum也就可以正常使用了。 一.安装NTP软件包： yum -y install ntp /*yum安装NTP服务*/ chkconfig --add ntpd /*添加NTP*/ chkconfig ntpd on /*开机自启动NTP*/ 二.修改NTP配置文件： vi /etc/ntp.conf *************************************************************** # For more information about this file, see the man pages # ntp.conf(5), ntp_acc(5), ntp_auth(5), ntp_clock(5), ntp_misc(5), ntp_mon(5). driftfile /var/lib/ntp/drift restrict default ignore 设置默认策略为拒绝所有访问方式的请求 # Permit time synchronization with our time source, but do not # permit the source to query or modify the service on this system. restrict default kod nomodify notrap nopeer noquery restrict -6 default kod nomodify notrap nopeer noquery # Permit all access over the loopback interface. This could # be tightened as well, but to do so would effect some of # the administrative functions. restrict 127.0.0.1  restrict -6 ::1 # Hosts on local network are less restricted. restrict 192.168.1.0 mask 255.255.255.0 nomodify notrap 允许局域网内机器同步时间 # Use public servers from the pool.ntp.org project. # Please consider joining the pool (http://www.pool.ntp.org/join.html). server 0.CentOS.pool.ntp.org server 1.centos.pool.ntp.org 设置同步服务器 server 2.centos.pool.ntp.org #broadcast 192.168.1.255 autokey # broadcast server #broadcastclient # broadcast client #broadcast 224.0.1.1 autokey # multicast server #multicastclient 224.0.1.1 # multicast client #manycastserver 239.255.254.254 # manycast server #manycastclient 239.255.254.254 autokey # manycast client restrict 0.centos.pool.ntp.org nomodify notrap noquery restrict 1.centos.pool.ntp.org nomodify notrap noquery 允许与上层服务器同步时间 restrict 2.centos.pool.ntp.org nomodify notrap noquery # Undisciplined Local Clock. This is a fake driver intended for backup # and when no outside source of synchronized time is available.  server 127.127.1.0 # local clock fudge 127.127.1.0 stratum 10 外界同步源无法联系时，使用本地时间为同步服务 # Enable public key cryptography. #crypto includefile /etc/ntp/crypto/pw # Key file containing the keys and key identifiers used when operating # with symmetric key cryptography.  keys /etc/ntp/keys # Specify the key identifiers which are trusted. #trustedkey 4 8 42 # Specify the key identifier to use with the ntpdc utility. #requestkey 8 # Specify the key identifier to use with the ntpq utility. #controlkey 8 # Enable writing of statistics records. #statistics clockstats cryptostats loops *************************************************************** 时间同步 命令： # ntpdate ip (同步时间服务器ip) #hwclock -w //将时间写入硬件 例子 ntpdate 210.167.182.10 同步时间服务器： server ntp-sop.inria.frserver 210.72.145.44(中国国家授时中心服务器IP地址) server ntp.sjtu.edu.cn(上海交通大学网络中心NTP服务器地址) 执行： # ntpdate 210.167.182.10 (同步时间服务器ip) #hwclock -w //将时间写入硬件