Issues with upgrading Python and installing Mongodb drivers under Centos

Check the Python version python -V If it is below 2.7, you need to upgrade.

First go to the official website to download the python compressed package you want, and then decompress it. Enter the main directory and perform the following operations (GCC compiler support is required)

./configure --prefix=/usr/local
make all 
make install 
make clean 
make distclean

After executing these commands, you can see python2.7 in the /usr/local/bin/ directory, and then try to execute /usr/local/bin/python2.7 -V If the version number is displayed, it means that it has been installed successfully. But the upgrade is only half done. You can run python -V again in the terminal and you will find that it is still the version number before the upgrade. At this time, do the following.

Create a soft link to make the system default python point to python2.7

mv /usr/bin/python /usr/bin/python2.6.6 
ln -s /usr/local/bin/python2.7 /usr/bin/python

At this time, when you execute python -V, it will be the version you installed.

The Python version has been upgraded, but you still have a few steps to go.

At this time, you can try to execute yum list in the terminal and you will find that the yum command does not work. This is because yum is not compatible with python 2.7 by default.

We need to modify the /usr/bin/yum file and open it with vim (administrator privileges are required).

The file header

!/usr/bin/python

Change to

!/usr/bin/python2.6.6 This is the file you modified before linking

This way, the Python upgrade is basically completed.

Install MongoDb Driver

After installing Python, we use it. Python sometimes requires many third-party libraries. These libraries need to be installed additionally. The main installation tools are setuptools and pip (I won’t explain the difference between these two tools here).

Next, we will show you how to install setuptools and MongoDb driver offline on the server (our server is not allowed to access the Internet, not even for a second).

Install setuptools

Download setuptools-1.4.2.tar.gz

After decompression, enter the main directory and execute python setup.py install

If the installation process prompts that the corresponding py package is missing, please install the corresponding software package through yum (as follows),

Then recompile and install py, and the installation will be successful if you continue.

Note that the following packages are usually missing

yum install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel

After installing setuptools, you can install the mongodb driver. Same method as above.

If you happen to need to install the MongoDB Python driver and you are reading this article from the end to the beginning, you may be able to avoid installing Python twice.

Summarize

The above is what I introduced to you about upgrading Python and Mongodb driver installation under CentOS. I hope it will be helpful to you. If you have any questions, please leave me a message and I will reply to you in time. I would also like to thank everyone for their support of the 123WORDPRESS.COM website!
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