Pitfall 1
lib/python3.5/site-packages/Crypto/Util/number.py:57: PowmInsecureWarning: Not using mpz_powm_sec. You should rebuild using libgmp >= 5 to avoid timing attack vulnerability.
Lib GMP is GNU multiple precision arithmentic library.
download and follow the steps as below.
- Need to get the development tools installed on to the system.
yum -y group-install “Development Tools”
yum -y install gcc libgcc glibs libffi-devel libxml2-devel libxslt-devel openssl-devel zlib-devel bzip2-devel ncurses-devel
-
Download the gmp libraries from its download site. https://gmplib.org/#DOWNLOAD
-
compile and install. tar -xvjpf gmp-versionno.tar.bz2 cd gmp-versionno/ ./configure make make check make install
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one gmp installed rebuild your python PyCrypto pip install –ignore-installed PyCrypto
pitfall 2
devopsmain | UNREACHABLE! => { “changed”: false, “msg”: “Authentication failed.”, “unreachable”: true }
Though the host is reachable it says unreachable, the fix is to add the entry for the same in /etc/hosts file or let your dns tell ansible where the host is.