centos7环境搭建

centos7环境搭建

网卡名修改为eth0

• vi /etc/sysconfig/grub
• 修改行：GRUB_CMDLINE_LINUX=”crashkernel=auto rd.lvm.lv=cl/root rd.lvm.lv=cl/swap rhgb quiet net.ifnames=0 biosdevname=0”
• net.ifnames=0 biosdevname=0为新增
• grub2-mkconfig -o /boot/grub2/grub.cfg命令更新grub配置，重启后网卡名即修改成功

eth0静态ip配置

• vi /etc/sysconfig/network-scripts/ifcfg-eth0
• 详细配置如下所示

DEVICE=eth0
TYPE=Ethernet
ONBOOT=yes
BOOTPROTO=static
IPADDR=192.168.1.100
NETMASK=255.255.255.0
GATEWAY=192.168.1.1

制作本地yum源

• 新建/mnt/iso /mnt/dvd /mnt/dvdiso目录
• CentOS-7-x86_64-Everything-1611.iso文件拷贝纸/mnt/iso目录
• 挂载：mount -o loop /mnt/iso/CentOS-7-x86_64-Everything-1611.iso /mnt/dvdiso/
• 拷贝：cp -a /mnt/dvdiso/* /mnt/dvd/
• 排序：cp /mnt/dvd/TRANS.TBL /mnt/dvd/TRANS.TBL_bk和sort /mnt/dvd/TRANS.TBL_bk > /mnt/dvd/TRANS.TBL
• 删除：rm -rf /mnt/dvd/TRANS.TBL_bk
• 取消挂载：umount /mnt/dvdiso
• 删除：rm -rf /mnt/iso和rm -rf /mnt/dvdiso
• /mnt/dvd可以作为本地yum源
• 备份yum配置：cd /etc/yum.repos.d和rename .repo .repo.bak *.repo
• 新的yum配置：vi /etc/yum.repos.d/Centos-Media.repo
• 更新yum源：yum clean all和yum upgrade

[c7-media]
name=CentOS-$releasever - Media
baseurl=file:///mnt/dvd
gpgcheck=0
enabled=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7

本地yum源验证

• yum install net-tools
• yum install gcc
• yum install gcc-c++
• yum install glibc-static 安装c的静态库
• yum install glibc-devel
• yum install xulrunner.i686 安装32位程序运行库
• yum install keepalived
• yum install boost boost-devel boost-doc 安装boost
• yum install kernel
• yum install kernel-devel kernel-doc 安装内核源码
• keepalived配置文件：vi /etc/keepalived/keepalived.conf

! Configuration File for keepalived
global_defs {
    router_id node_centos73
}
vrrp_script check_script {
    script "/root/this_is_check.sh"
    interval 60
    weight -10
}
vrrp_instance VI_1 {
    state BACKUP
    interface eth0
    virtual_router_id 73
    priority 150
    nopreempt
    advert_int 3
    track_interface {
        eth0
    }
#    track_script {
#        check_script
#    }
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.1.101/24 brd 192.168.1.255 dev eth0 ! gateway 192.168.1.1
    }
#    notify_master "/root/you_are_master.sh"
#    notify_backup "/root/you_are_backup.sh"
#    notify_fault  "/root/you_are_fault.sh"
}