- 配置仓库源
centos6.repo:
[base]
name=base
baseurl=http://192.168.200.1/reposyum/CentOS/6.8/os/x86_64/
enabled=1
gpgcheck=0
[extras]
name=extras
baseurl=http://192.168.200.1/reposyum/CentOS/6.8/extras/x86_64/
enabled=1
gpgcheck=0
[updates]
name=updates
baseurl=http://192.168.200.1/reposyum/CentOS/6.8/updates/x86_64/
enabled=1
gpgcheck=0
[plus]
name=plus
baseurl=http://192.168.200.1/reposyum/CentOS/6.8/centosplus/x86_64/
enabaled=1
gpgcheck=0
epel6.repo:
[epel-x86_64]
name=epel-x86_64
baseurl=http://192.168.200.1/reposyum/epel/6/x86_64/
enabled=1
gpgcheck=0
upgrade.repo:
[upgrade]
name=upgrade
baseurl=http://192.168.200.1/reposyum/CentOS6upg/
enable=1
gpgcheck=0
- 将镜像iso挂载到本地
mkdir /centos7
vi /etc/fstab
#add
/root/CentOS-7-x86_64-DVD-1511.iso /centos7 iso9660 defaults,loop 0 0
- 安装软件工具
yum -y install preupgrade-assistant-contents redhat-upgrade-tool preupgrade-assistant
- 升级评估
preupg
评估过程会出现找不到result.html的报错,可忽略
- 强制升级
redhat-upgrade-tool-cli --device=/centos7 --force
reboot
- 升级过程
- 验证
uname -r
3.10.0-327.el7.x86_64
cat /etc/redhat-release
CentOS Linux release 7.2.1511 (Core)
- 将CentOS6的so.0.0.1文件复制到/lib64目录下
建立软链接:
cd /lib64
ln -s libpcre.so.0.0.1 libpcre.so.0
- 更改源为CentOS7的源
删除所有源,去掉fstab挂载的iso文件,删除/centos7目录
新增yum源:
centos7.repo:
[base]
name=base
baseurl=http://192.168.200.1/reposyum/CentOS/ 7.2.1511/os/x86_64/
enabled=1
gpgcheck=0
[extras]
name=extras
baseurl=http://192.168.200.1/reposyum/CentOS/ 7.2.1511/extras/x86_64/
enabled=1
gpgcheck=0
[updates]
name=updates
baseurl=http://192.168.200.1/reposyum/CentOS/ 7.2.1511/updates/x86_64/
enabled=1
gpgcheck=0
[plus]
name=plus
baseurl=http://192.168.200.1/reposyum/CentOS/ 7.2.1511/centosplus/x86_64/
enabaled=1
gpgcheck=0
epel7.repo:
[epel-x86_64]
name=epel-x86_64
baseurl=http://192.168.200.1/reposyum/epel/7/x86_64/
enabled=1
gpgcheck=0
- 更新系统
yum clean all
yum makecache
yum upgrade