centos6.3安裝python2.7, pip2.7, mysql

參考:

https://github.com/h2oai/h2o-2/wiki/Installing-python-2.7-on-centos-6.3.-Follow-this-sequence-exactly-for-centos-machine-only

http://toomuchdata.com/2012/06/25/how-to-install-python-2-7-3-on-centos-6-2/

 

背景:

生產環境下使用的是centos  6.3, 系統默認python2.6, 在不改變系統默認的前提下, 想額外的安裝python2.7.

全部步驟基本都複製於參考文章, 此篇僅做爲筆記備查.

 

安裝Python2.7

步驟:

1. 配置yum國內源

cd /etc/yum.repos.d
mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
wget http://mirrors.163.com/.help/CentOS6-Base-163.repo
mv CentOS6-Base-163.repo CentOS6-Base.repo
yum clean all
yum makecache

2. 配置python2.7源碼安裝編譯環境

yum groupinstall "Development tools"
yum install zlib-devel
yum install bzip2-devel
yum install openssl-devel
yum install ncurses-devel
yum install sqlite-devel

3. 下載並編譯安裝python2.7

cd /opt
wget --no-check-certificate https://www.python.org/ftp/python/2.7.11/Python-2.7.11.tar.xz
tar xf Python-2.7.11.tar.xz
cd Python-2.7.11
./configure --prefix=/usr/local
make && make altinstall

注意, 是 make altinstall 而不是 make install

安裝完成後, /usr/bin/python 和 /usr/local/bin/python 應該以下

root@lg1:/opt/Python-2.7.11 ] ls -ltr /usr/bin/python*

lrwxrwxrwx 1 root root    6 Nov 16  2002 /usr/bin/python2 -> python
-rwxr-xr-x 1 root root 1418 Jul 10  2013 /usr/bin/python2.6-config
-rwxr-xr-x 2 root root 4864 Jul 10  2013 /usr/bin/python2.6
-rwxr-xr-x 2 root root 4864 Jul 10  2013 /usr/bin/python
lrwxrwxrwx 1 root root   16 Oct 24 15:39 /usr/bin/python-config -> python2.6-config

root@lg1:/opt/Python-2.7.11 ] ls -ltr /usr/local/bin/python*
-rwxr-xr-x 1 root root 6214533 Mar 19 22:46 /usr/local/bin/python2.7
-rwxr-xr-x 1 root root    1674 Mar 19 22:46 /usr/local/bin/python2.7-config

4. 檢查一下$PATH, /usr/local/bin的位置應該在/usr/bin以前

root@openstack h2o]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

5. 創建軟連接, 把 /usr/local/bin/python2.7 連接到 /usr/local/bin/python

ln -s /usr/local/bin/python2.7 /usr/local/bin/python

6. 斷開ssh, 從新ssh到服務器, python已默認爲2.7.11, yum能夠正常使用

 

安裝pip, virtualenv

1. 安裝pip 8.1.2

由於全部的環境都在virtualenv中配置, 因此pip沒有修改, 若是默認的pip是2.6版本, 創建軟連接到/usr/local/bin/pip便可

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

2. 安裝virtualenv

pip install virtualenv

 

安裝mysql

1. 安裝mysql客戶端和服務端

yum install mysql
yum install mysql-server
yum install mysql-devel

2. 配置mysql默認charset

/etc/my.cnf中加入default-character-set=utf8

3. 啓動mysql服務和設置開機啓動

service mysqld start
chkconfig --add mysqld
chkconfig mysqld on

4. 建立mysql root用戶

mysqladmin -u root password 123456