CentOS 笔记

CentOS 7 网络配置

shell
# 网络配置
sed -i 's/ONBOOT="no"/ONBOOT="yes"/g' /etc/sysconfig/network-scripts/ifcfg-eth0
sed -i 's/IPV6INIT="yes"/IPV6INIT="no"/g' /etc/sysconfig/network-scripts/ifcfg-eth0
sed -i 's/BOOTPROTO="dhcp"/BOOTPROTO="none"/g' /etc/sysconfig/network-scripts/ifcfg-eth0

sed -i 's/ONBOOT=no/ONBOOT=yes/g' /etc/sysconfig/network-scripts/ifcfg-eth0
sed -i 's/IPV6INIT=yes/IPV6INIT=no/g' /etc/sysconfig/network-scripts/ifcfg-eth0
sed -i 's/BOOTPROTO=dhcp/BOOTPROTO=none/g' /etc/sysconfig/network-scripts/ifcfg-eth0

cat << EOF >> /etc/sysconfig/network-scripts/ifcfg-eth0
IPADDR=192.168.2.23
PREFIX=16
GATEWAY=192.168.1.1
DNS1=114.114.114.114
DNS2=192.168.1.1
EOF
cat << EOF >/etc/hostname
QRadarCE
EOF

CentOS 7 安装必备包

shell
# 必备软件
yum install -y epel-release
yum update -y
yum install -y bash-completion bash-completion-extras sudo openssh-server
systemctl enable sshd
systemctl start sshd
ln -s -f /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
reboot

CentOS 6 安装必备包

shell
mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-vault-6.10.repo
yum clean all && yum makecache
yum install -y epel-release
yum update -y
yum install -y bash-completion bash-completion-extras sudo openssh-server
echo "PermitRootLogin yes" | tee /etc/ssh/sshd_config

ssh-keygen -t rsa -f /etc/ssh/ssh_host_rsa_key
ssh-keygen -t dsa -f /etc/ssh/ssh_host_dsa_key
ssh-keygen -t ecdsa -f /etc/ssh/ssh_host_ecdsa_key
ssh-keygen -t ed25519 -f /etc/ssh/ssh_host_ed25519_key

chkconfig sshd on
service sshd start
ln -s -f /usr/share/zoneinfo/Asia/Shanghai /etc/localtime

Extra Packages for Enterprise Linux (EPEL)

shell
yum install -y epel-release

ELRepo Project

Import the public key:

shell
rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org

To install ELRepo for RHEL-9:

bash
yum install https://www.elrepo.org/elrepo-release-9.el9.elrepo.noarch.rpm

To install ELRepo for RHEL-8:

shell
yum install https://www.elrepo.org/elrepo-release-8.el8.elrepo.noarch.rpm

To install ELRepo for RHEL-7, SL-7 or CentOS-7:

shell
yum install https://www.elrepo.org/elrepo-release-7.el7.elrepo.noarch.rpm

安装长期支持内核（lt = long time）

shell
yum --enablerepo=elrepo-kernel -y install kernel-lt

安装稳定主线内核kernel-ml（ml=mainline）

shell
yum --enablerepo=elrepo-kernel -y install kernel-ml

红帽软件集合

https://access.redhat.com/support/policy/updates/rhscl-rhel7

shell
yum install centos-release-scl –y

安装 GCC 9

shell
yum install devtoolset-9-toolchain –y

# 临时使用
scl enable devtoolset-9 bash
source scl_source enable devtoolset-9

安装 GCC 7
```shell
yum install devtoolset-7-toolchain –y

# 临时使用
scl enable devtoolset-7 bash
source scl_source enable devtoolset-7

安装 Python 3.8

shell
yum install rh-python38 rh-python38-python-devel –y

# 临时使用
scl enable rh-python38 bash
source scl_source enable rh-python38

MySQL Server 5.7

shell
yum install -y http://repo.mysql.com/mysql57-community-release-el7.rpm
rpm -import http://repo.mysql.com/RPM-GPG-KEY-mysql-2022

yum install mysql-server -y

systemctl enable mysqld
systemctl start mysqld

grep 'temporary password'  /var/log/mysqld.log

MySQL Server 8.0

shell
yum install -y https://repo.mysql.com/mysql80-community-release-el7.rpm
rpm -import http://repo.mysql.com/RPM-GPG-KEY-mysql-2022

yum install mysql-server -y

systemctl enable mysqld
systemctl start mysqld

grep 'temporary password'  /var/log/mysqld.log

Nginx

shell
yum install -y https://nginx.org/packages/centos/7/noarch/RPMS/nginx-release-centos-7-0.el7.ngx.noarch.rpm
yum install -y nginx
systemctl enable nginx
systemctl start nginx

Redis 3.2

shell
yum install -y redis
systemctl enable redis
systemctl start redis

Redis 6

shell
yum install -y \
https://repo.ius.io/ius-release-el7.rpm \
https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
yum install -y redis6
systemctl enable redis
systemctl start redis

OpenJDK

shell
# openjdk 8
yum install -y java-1.8.0-openjdk java-1.8.0-openjdk-devel


# openjdk 11
yum install -y java-11-openjdk java-11-openjdk-devel

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