Ansible 2.x Install Fails Due To Paramiko 2.0 Dependency Changes

Installing the latest Ansible via pip fails due to paramiko 2.0 changing their dependency from pycrypto to cryptography. Cryptography has a dependency on cffi, which requires libff

Solution 1:

To install cryptography >= 1.1 from pip, you need to install the developer package for libffi since it will contain the missing header file. Since you tagged Ubuntu, I am assuming you are using the apt package manager.

apt-get install libffi-dev

You will also need your distro's equivalent of ssl's development package and gcc for cryptography >= 1.1. If you are running this in your system environment then gcc is almost certainly already installed, but you may need to apt-get install libssl-dev also if that is missing.

The Fedora/RHEL equivalents are libffi-devel and openssl-devel, and can be installed with dnf or yum depending on your OS and version.

Solution 2:

Found one solution is to install specific versions of each:

pip install paramiko==1.17.0 ansible==2.0.0.2