centos7 environment to build

centos7 environment to build

Change the network card name to 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 is new
• The grub2-mkconfig -o /boot/grub2/grub.cfg command updates the grub configuration. After restarting, the network card name is successfully modified.

eth0 static ip configuration

• vi /etc/sysconfig/network-scripts/ifcfg-eth0
• The detailed configuration is as follows

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

Make a local yum source

• Create a new /mnt/iso /mnt/dvd /mnt/dvdiso directory
• CentOS-7-x86_64-Everything-1611.iso file copy paper /mnt/iso directory
• Mount: mount -o loop /mnt/iso/CentOS-7-x86_64-Everything-1611.iso /mnt/dvdiso/
• Copy: cp -a /mnt/dvdiso/* /mnt/dvd/
• Sort: cp /mnt/dvd/TRANS.TBL /mnt/dvd/TRANS.TBL_bk and sort /mnt/dvd/TRANS.TBL_bk > /mnt/dvd/TRANS.TBL
• Delete: rm -rf dvd/TRANS.TBL_bk
• Unmount: umount /mnt/dvdiso
• Remove: rm -rf dvd/iso and rm -rf dvd/dvdiso
• /mnt/dvd can be used as a local yum source
• Prep yum placement: cd /etc/yum.repos.d sum rename .repo .repo.bak * .repo
• New yum configuration: vi /etc/yum.repos.d/Centos-Media.repo
• Update yum sources: yum clean all and 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

Local yum source verification

• yum install net-tools
• yum install gcc
• yum install gcc-c++
• yum install glibc-static installs the static library of c
• yum install xulrunner.i686 installs the 32-bit program runtime
• yum install keepalived
• yum install boost boost-devel boost-doc 安装boost
• yum install kernel
• yum install kernel-devel kernel-doc Install the kernel source code
• keepalived configuration file: 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"
}