Thursday, October 27, 2016

Install AWS IoT Python SDK in Mac

I followed the steps in the page to install AWS IoT Python SDK in my MacBook but I occurred problem.

I checked my Python is version 3.

>python3 -V
Python 3.5.2

But the OpenSSL used by the Python is not 1.0.x that is required by the SDK.

>python3
>>>import ssl
>>>ssl.OPENSSL_VERSION
'OpenSSL 0.9.8zh 14 Jan 2016'

I used brew to download the new OpenSSL.

>brew update
>brew install openssl
>brew link —force openssl

The above command occurred warning.



The command cannot built a link in /usr/bin/openssl because the position is occupied by a real openssl file. I wanted to remove the below openssl but I couldn't.

>cd /usr/bin
>sudo rm -rf openssl
rm: openssl: Operation not permitted

I followed the page to remove it.

>csrutil disable
>reboot
>cd /usr/bin
>sudo rm -rf openssl
>csrutil enable
>reboot

At that time, I made sure that the old openssl was killed.

I built OpenSSL links.

>ln -s /usr/local/opt/openssl/lib/libcrypto.1.0.0.dylib /usr/local/lib/
>ln -s /usr/local/opt/openssl/lib/libssl.1.0.0.dylib /usr/local/lib/
>ln -s /usr/local/Cellar/openssl/1.0.2j/bin/openssl /usr/bin/openssl

I checked the Python's OpenSSL again, it was still 0.9.

>python3
>>>import ssl
>>>ssl.OPENSSL_VERSION
'OpenSSL 0.9.8zh 14 Jan 2016'

The python was installed in a PKG way and the OpenSSL 0.9.8 is embedded in the python. Therefore I wanted to remove the python.

I followed the page to uninstall the old Python 3.

1. Goto Finder>Applications>Python 3.0. Right click, select Move to Trash.

2.
>cd /Library/Frameworks/
>sudo rm -rf Python.framework

I used brew to install Python 3 with OpenSSL 1.0.2.

>brew install python3 --with-brewed-openssl

I checked the Python's OpenSSL again.

>python3
>>>import ssl
>>>ssl.OPENSSL_VERSION
'OpenSSL 1.0.2j  26 Sep 2016'

OKAY. I had upgrated Python and OpenSSL.

Then I downloaded the SDK and run a sample in my MacBook. The final steps followed the end of the page.

-Count

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