Xem các tiến trình yum đang chạy:

ps aux | grep yum

Kết thúc tiến trình:

kill -9 32466

Cập nhật nguồn yum:

sudo curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo
wget -O /etc/yum.repos.d/epel.repo https://mirrors.aliyun.com/repo/epel-7.repo

Xóa cache của yum:

yum clean all

Tạo lại cache:

sudo yum makecache

Sử dụng script để thay đổi nguồn một cách tự động:

bash <(curl -sSL https://linuxmirrors.cn/main.sh)

Nếu phiên bản hệ thống đã được lưu trữ, sử dụng nguồn lưu trữ sau (thay thế /etc/yum.repos.d/CentOS-Base.repo):

# 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-$releasever - Base
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os&infra=$infra
baseurl=https://mirrors.ustc.edu.cn/centos-vault/centos/$releasever/os/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7

#released updates
[updates]
name=CentOS-$releasever - Updates
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates&infra=$infra
baseurl=https://mirrors.ustc.edu.cn/centos-vault/centos/$releasever/updates/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7

#additional packages that may be useful
[extras]
name=CentOS-$releasever - Extras
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extras&infra=$infra
baseurl=https://mirrors.ustc.edu.cn/centos-vault/centos/$releasever/extras/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7

#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-$releasever - Plus
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=centosplus&infra=$infra
baseurl=https://mirrors.ustc.edu.cn/centos-vault/centos/$releasever/centosplus/$basearch/
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7

Cài đặt cronie thủ công:

wget http://mirrors.aliyun.com/centos/7/os/x86_64/Packages/cronie-1.4.11-23.el7.x86_64.rpm
wget http://mirrors.aliyun.com/centos/7/os/x86_64/Packages/cronie-anacron-1.4.11-23.el7.x86_64.rpm
wget http://mirrors.aliyun.com/centos/7/os/x86_64/Packages/crontabs-1.11-6.20121102git.el7.noarch.rpm
sudo yum localinstall cronie-*.rpm crontabs-*.rpm

Vị trí các script của BaoTa:

/www/server/panel/script/

Vị trí file cấu hình nguồn yum:

/etc/yum.repos.d/