CentOS7 指定安装目录

[root@ea364aad1bb8 ~]# cat /etc/redhat-release
CentOS Linux release 7.9.2009 (Core)

• 指定安装目录场景

• 系统盘 ssd raid 1 lvm 512G

• 数据盘 sas raid 5 lvm 12TB

• 软件位置 /software

• 配置环境变量方便查询软件当前使用 .bashrc [根据个人需要设置环境变量]

• vim ~/.bashrc

export softwarebin=/software/usr/bin
export softwaresbin=/software/usr/sbin
export softwarelocalbin=/software/usr/local/bin
export softwarelocalsbin=/software/usr/local/sbin
export PATH=$PATH:$softwarebin:$softwaresbin:$softwarelocalbin:$softwarelocalsbin;

• cat ~/.bashrc

[root@ea364aad1bb8 ~]# cat ~/.bashrc
# .bashrc

# User specific aliases and functions

alias rm='rm -i'
alias cp='cp -i'
alias mv='mv -i'

# Source global definitions
if [ -f /etc/bashrc ]; then
        . /etc/bashrc
fi
export softwarebin=/software/usr/bin
export softwaresbin=/software/usr/sbin
export softwarelocalbin=/software/usr/local/bin
export softwarelocalsbin=/software/usr/local/sbin
export PATH=$PATH:$softwarebin:$softwaresbin:$softwarelocalbin:$softwarelocalsbin;

• 生产环境不建议使用二进制安装。当前只演示 yum 、 rpm 包安装方式

yum update -y
yum clean all
yum -c /etc/yum.conf clean all

• yum 安装python3 指定安装位置 /software

yum -c /etc/yum.conf --installroot=/software --releasever=/ install python3

• 如提示缺少 libpython3.6m.so.1.0

cp /software/usr/lib64/libpython3.6m.so.1.0 /usr/lib64/

• 如没有pip3

python3 -m pip install whatever

• 添加快捷方式

which python3
which pip3
ln -s /software/usr/bin/python3 /usr/bin/python3
ln -s /software/bin/pip3 /usr/bin/pip3

• yum 安装rpm 包当前以 iftop为例 iftop.rpm 包

• 下载

curl -k http://rpmfind.net/linux/epel/7/x86_64/Packages/i/iftop-1.0-0.21.pre4.el7.x86_64.rpm -o iftop-1.0-0.21.pre4.el7.x86_64.rpm

• 使用yum 安装

yum -c /etc/yum.conf --installroot=/software --releasever=/ localinstall ./iftop-1.0-0.21.pre4.el7.x86_64.rpm -y

• 添加快捷方式

which iftop

ln -s /software/usr/sbin/iftop /usr/sbin/