centos7上Virtualenv从python3.4升级到Python3.7.4

目前我的虚拟环境python版本是3.4, 想升级到最新的3.7.4, 总结步骤如下:

首先激活当前env_py3环境, 并导出当前依赖包:

workon env_py3
pip freeze > requirements.txt

1 2	workon env_py3 pip freeze > requirements.txt

首先安装依赖:

注意: libffi-devel必须安装, 不然编译安装会失败而导致安装不完整, 而创建虚拟环境时会报错(No module named ‘_ctypes’ )

yum -y install gcc gcc-c++ zlib zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel
yum -y install libffi-devel

1 2	yum -y install gcc gcc-c++ zlib zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel yum -y install libffi-devel

下载安装python3.7:

wget https://www.python.org/ftp/python/3.7.4/Python-3.7.4.tgz
tar -zxvf Python-3.7.4.tgz
cd Python-3.7.4/
mkdir /usr/local/python3.7
./configure --prefix=/usr/local/python3.7
make && make install

wget https://www.python.org/ftp/python/3.7.4/Python-3.7.4.tgz

tar -zxvf Python-3.7.4.tgz

cd Python-3.7.4/

mkdir /usr/local/python3.7

./configure --prefix=/usr/local/python3.7

make && make install

创建软链接:

ln -s /usr/local/python3.7/bin/python3.7 /usr/bin/python3.7
ln -s /usr/local/python3.7/bin/pip3 /usr/bin/pip3

1 2	ln -s /usr/local/python3.7/bin/python3.7 /usr/bin/python3.7 ln -s /usr/local/python3.7/bin/pip3 /usr/bin/pip3

配置虚拟环境:

#配置虚拟环境创建时默认用python3.7
virtualenv -p /usr/local/python3.7/bin/python3 /root/.virtualenvs
ln -s /root/.virtualenvs/bin/activate /usr/bin/activate
source activate
#创建虚拟环境
mkvirtualenv -p /usr/local/python3.7/bin/python3 env_py3
#切换到虚拟环境
workon env_py3
#导入依赖包
pip install -r requirements.txt

#配置虚拟环境创建时默认用python3.7

virtualenv -p /usr/local/python3.7/bin/python3 /root/.virtualenvs

ln -s /root/.virtualenvs/bin/activate /usr/bin/activate

source activate

#创建虚拟环境

mkvirtualenv -p /usr/local/python3.7/bin/python3 env_py3

#切换到虚拟环境

workon env_py3

#导入依赖包

pip install -r requirements.txt

附: 我的系统配置文件:

.bashrc:

## virtualenv
export PIP_REQUIRE_VIRTUALENV=true #pip安装东西的时候不安装到本地环境
export PIP_RESPECT_VIRTUALENV=true #在执行pip的时候让系统自动开启虚拟环境
export WORKON_HOME=$HOME/.virtualenvs #所有虚拟环境存储的目录
export PIP_VIRTUALENV_BASE=$WORKON_HOME
export VIRTUALENV_USE_DISTRIBUTE=1        #  总是使用 pip/distribute
#source /usr/local/bin/virtualenvwrapper.sh
source /usr/bin/virtualenvwrapper.sh 
#if [ -e $HOME/.local/bin/virtualenvwrapper.sh ];then
#    source $HOME/.local/bin/virtualenvwrapper.sh
#else if [ -e /usr/local/bin/virtualenvwrapper.sh ];then
#        source /usr/local/bin/virtualenvwrapper.sh
#    fi
#fi

# colourful man page
export LESS_TERMCAP_mb=$'\E[01;34m'
export LESS_TERMCAP_md=$'\E[01;34m'
export LESS_TERMCAP_me=$'\E[0m'
export LESS_TERMCAP_us=$'\E[01;32m'
export LESS_TERMCAP_ue=$'\E[0m'
export LESS_TERMCAP_so=$'\E[01;33;44m'
export LESS_TERMCAP_se=$'\E[0m'

TERM=xterm
export TERM

PATH="$PATH:$HOME/bin:/usr/local/python3.7/bin"
export PATH

## virtualenv

export PIP_REQUIRE_VIRTUALENV=true #pip安装东西的时候不安装到本地环境

export PIP_RESPECT_VIRTUALENV=true #在执行pip的时候让系统自动开启虚拟环境

export WORKON_HOME=$HOME/.virtualenvs #所有虚拟环境存储的目录

export PIP_VIRTUALENV_BASE=$WORKON_HOME

export VIRTUALENV_USE_DISTRIBUTE=1 # 总是使用 pip/distribute

#source /usr/local/bin/virtualenvwrapper.sh

source /usr/bin/virtualenvwrapper.sh

#if [ -e $HOME/.local/bin/virtualenvwrapper.sh ];then

# source $HOME/.local/bin/virtualenvwrapper.sh

#else if [ -e /usr/local/bin/virtualenvwrapper.sh ];then

# source /usr/local/bin/virtualenvwrapper.sh

# fi

#fi

# colourful man page

export LESS_TERMCAP_mb=$'\E[01;34m'

export LESS_TERMCAP_md=$'\E[01;34m'

export LESS_TERMCAP_me=$'\E[0m'

export LESS_TERMCAP_us=$'\E[01;32m'

export LESS_TERMCAP_ue=$'\E[0m'

export LESS_TERMCAP_so=$'\E[01;33;44m'

export LESS_TERMCAP_se=$'\E[0m'

TERM=xterm

export TERM

PATH="$PATH:$HOME/bin:/usr/local/python3.7/bin"

export PATH

旧的:升级python2.7.14：

在系统上升级python还是需要慎重, 严重的会导致系统命令不可用, 建议最好不要覆盖系统原本的/usr/bin/python文件

下面是升级脚本：

#!/bin/bash

export https_proxy=10.x.x.x:8888
export http_proxy=10.x.x.x:8888

py_version=`python -c "import platform;print platform.python_version()"`

mkdir /opt/packages
cd /opt/packages
wget https://www.python.org/ftp/python/2.7.14/Python-2.7.14.tgz
tar -zxvf Python-2.7.14.tgz

#pip freeze > requirments.txt

cd Python-2.7.14

#解决Python升级找不到Tkinter模块
yum -y install tkinter
#-ltk8.5 -ltcl8.5 默认是 8.2 ，请你系统实际tcl/tk版本修改
#rpm -qa | grep ^tk
#rpm -qa | grep ^tcl

#vi Modules/Setup.dist
#_tkinter _tkinter.c tkappinit.c -DWITH_APPINIT \
#-L/usr/local/lib \
#-I/usr/local/include \
#-ltk8.5 -ltcl8.5 \
#-lX11

yum -y install tcl-devel tk-devel

./configure --enable-shared --prefix=/usr/local CFLAGS=-fPIC LDFLAGS="-Wl,-rpath /usr/local/lib" --enable-unicode=ucs4
make -j24
sudo make install

cd ../

mv /usr/bin/python /usr/bin/python$py_version
ln -sf /usr/local/bin/python /usr/bin/python

py_version_new=`python -c "import platform;print platform.python_version()"`

if [ $py_version_new == "2.7.14" ]; then
	sed -i "s@\#\!.*/usr/bin/python@\#\!/usr/bin/python$py_version@g" /usr/bin/yum
	sed -i "s@\#\!.*/usr/bin/python@\#\!/usr/bin/python$py_version@g" /usr/libexec/urlgrabber-ext-down
	sed -i "s@\#\!.*/usr/bin/python@\#\!/usr/bin/python$py_version@g" /usr/bin/firewall-cmd
	sed -i "s@\#\!.*/usr/bin/python@\#\!/usr/bin/python$py_version@g" /sbin/authconfig

	wget https://bootstrap.pypa.io/ez_setup.py
	python ez_setup.py
	wget https://bootstrap.pypa.io/get-pip.py
	python get-pip.py
	ln -sf /usr/local/bin/pip /usr/bin/pip
	ln -sf /usr/local/bin/pip /usr/bin/pip2

	echo "PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin" >> /etc/profile
	echo "export PATH" >> /etc/profile
	source /etc/profile
	#pip uninstall -r requirments.txt
	#pip install -r requirments.txt.128
	#pip install -U docker
	#pip install --upgrade --force-reinstall 'requests==2.18.4' urllib3

else
	echo "python 2.7.14 updated failed!!!"
fi

#!/bin/bash

export https_proxy=10.x.x.x:8888

export http_proxy=10.x.x.x:8888

py_version=`python -c "import platform;print platform.python_version()"`

mkdir /opt/packages

cd /opt/packages

wget https://www.python.org/ftp/python/2.7.14/Python-2.7.14.tgz

tar -zxvf Python-2.7.14.tgz

#pip freeze > requirments.txt

cd Python-2.7.14

#解决Python升级找不到Tkinter模块

yum -y install tkinter

#-ltk8.5 -ltcl8.5 默认是 8.2 ，请你系统实际tcl/tk版本修改

#rpm -qa | grep ^tk

#rpm -qa | grep ^tcl

#vi Modules/Setup.dist

#_tkinter _tkinter.c tkappinit.c -DWITH_APPINIT \

#-L/usr/local/lib \

#-I/usr/local/include \

#-ltk8.5 -ltcl8.5 \

#-lX11

yum -y install tcl-devel tk-devel

./configure --enable-shared --prefix=/usr/local CFLAGS=-fPIC LDFLAGS="-Wl,-rpath /usr/local/lib" --enable-unicode=ucs4

make -j24

sudo make install

cd ../

mv /usr/bin/python /usr/bin/python$py_version

ln -sf /usr/local/bin/python /usr/bin/python

py_version_new=`python -c "import platform;print platform.python_version()"`

if [ $py_version_new == "2.7.14" ]; then

sed -i "s@\#\!.*/usr/bin/python@\#\!/usr/bin/python$py_version@g" /usr/bin/yum

sed -i "s@\#\!.*/usr/bin/python@\#\!/usr/bin/python$py_version@g" /usr/libexec/urlgrabber-ext-down

sed -i "s@\#\!.*/usr/bin/python@\#\!/usr/bin/python$py_version@g" /usr/bin/firewall-cmd

sed -i "s@\#\!.*/usr/bin/python@\#\!/usr/bin/python$py_version@g" /sbin/authconfig

wget https://bootstrap.pypa.io/ez_setup.py

python ez_setup.py

wget https://bootstrap.pypa.io/get-pip.py

python get-pip.py

ln -sf /usr/local/bin/pip /usr/bin/pip

ln -sf /usr/local/bin/pip /usr/bin/pip2

echo "PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin" >> /etc/profile

echo "export PATH" >> /etc/profile

source /etc/profile

#pip uninstall -r requirments.txt

#pip install -r requirments.txt.128

#pip install -U docker

#pip install --upgrade --force-reinstall 'requests==2.18.4' urllib3

else

echo "python 2.7.14 updated failed!!!"

解决升级python导致的salt启动失败：

centos7重新编辑安装了python2.7.14, 原来是2.7.5，导致salt-minion启动失败。

解决：

由于之前备份了python执行文件为python2.7.5，新的Python安装在/usr/local/目录。由于脚本误把之前版本的pip包删除了，所以重新安装salt需要的模块：

首先更改salt执行文件：

sed -i ‘s|^#!/usr/bin/python$|#!/usr/bin/python2.7.5|’ /usr/bin/salt*

如提示没有yaml块，则安装之：

wget http://pyyaml.org/download/pyyaml/PyYAML-3.12.tar.gz; tar -xvzf PyYAML-3.12.tar.gz; python2.7.5 setup.py install

安装相应模块：

python2.7.5 -m pip install zmq msgpack-python M2Crypto

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centos7上Virtualenv从python3.4升级到Python3.7.4

Published by sean on 12/13/201712/13/2017

1 Comment

xraju.com · 06/18/2020 at 3:03 AM

Leave a Reply Cancel reply

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centos7上Virtualenv从python3.4升级到Python3.7.4

Published by sean on 12/13/201712/13/2017

1 Comment

xraju.com · 06/18/2020 at 3:03 AM

Leave a Reply Cancel reply

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