yum源中已有的git版太低，所以选择源码编译，也比较简单，由于git上许多项目需要python环境不同，因此保留系统自带的python2.x版本，并编译python3.x

# wget https://www.python.org/ftp/python/3.5.2/Python-3.5.2.tgz
# tar xvf Python-3.5.2.tgz -C /usr/local/src
# cd /usr/local/src/Python-3.5.2
# ./configure --prefix=/usr/local/python3
# make && make install
# ln -sv /usr/local/python3/bin/python3.5 /usr/local/bin/python3

python编译报错
urllib.error.URLError: <urlopen error unknown url type: https>

安装openssl，openssl-devel后取消如下关于SSL的注释，在重新编译

vim Python-path/Modules/Setup.dist
207 #SSL=/usr/local/sslSL)/include -I$(SSL)/include/openssl \
208 #_ssl _ssl.c \ib -lssl -lcrypto
209 #       -DUSE_SSL -I$(SSL)/include -I$(SSL)/include/openssl \
210 #       -L$(SSL)/lib -lssl -lcryptoefault because it breaks builds

安装setuptools&&pip
https://pypi.python.org/pypi/setuptools
http://peak.telecommunity.com/DevCenter/EasyInstall

# python --version
Python 2.7.5
# wget https://bootstrap.pypa.io/ez_setup.py -O - | python ##系统自带python2.x
# wget https://pypi.python.org/packages/e7/a8/7556133689add
8d1a54c0b14aeff0acb03c64707ce100ecd53934da1aa13/pip8.1.2.tar.gz#md5=87083c0b9867963b29f7aba3613e8f4a ##安装pip
# tar xvf pip-8.1.2.tar.gz -C /usr/local/
# cd /usr/local/pip-8.1.2/
# python setup.py install
# pip --version
pip 8.1.2 from /usr/lib/python2.7/site-packages/pip-8.1.2-py2.7.egg (python 2.7)
# python3 -V
Python 3.5.2
# wget https://bootstrap.pypa.io/ez_setup.py -O - | python3
自定义python
# cd /usr/local/pip-8.1.2/
# python3 setup.py install
# pip3 -V
pip 8.1.2 from /usr/local/python3/lib/python3.5/site-packages/pip-8.1.2-py3.5.egg (python 3.5)

安装git

 # yum install curl-devel expat-devel gettext-devel openssl-devel zlib-devel asciidoc xmlto docbook2x
 # tar xvf git-2.9.2.tar.gz -C /usr/local/src/
 # cd /usr/local/src/git-2.9.2/
 # make configure
 # ./configure --prefix=/usr/local
 # make && make install