try to detect linux distro and install ansible, at last if does not succeed tries to install using git

install-ansible.sh

#!/bin/bash
#/ Usage: ./install-ansible.sh
#/ Description: AWESOME INSTALL SCRIPT
#/ Author: Rogério Peixoto (rcbpeixoto@gmail.com)
#/ Options:
#/   --help: Display this help message
usage() { grep '^#/' "$0" | cut -c4- ; exit 0 ; }
expr "$*" : ".*--help" > /dev/null && usage

echo "Using $TERM terminal"

readonly LOG_FILE="/tmp/$(basename "$0").log"

STEP=0

bump_step(){
  ((STEP++))
  log "${BLU}[INFO]    ($STEP) $1${NC}"
}

cleanup() {
  debug
  info "Cleanup script"

  # debug "Cleaning ansible"
  # [ -d ~/ansible ] && rmdir ansible
}

log()       { echo -e "${BWHT}["$(date "+%Y%m%d${NC}T${BWHT}%H%M%S")"]${NC} $*" | tee -a "$LOG_FILE" >&2 ;  }
separator() { SEP=$(printf '%*s' 105 | tr ' ' '#') && log "${GRN}[INFO]    $SEP${NC}"; }
info()      { log "${GRN}[INFO]    $1${NC}"; }
warning()   { log "${YEL}[WARN]    $1${NC}"; }
error()     { log "${RED}[ERROR]   $1${NC}"; }
fatal()     { log "${MAG}[FATAL]   $1${NC}"; exit 1 ; }
debug()     { if [ "${DEBUG}" == "true" ]; then log "${CYN}[DEBUG]   :: ${FUNCNAME[1]} :: $1${NC}"; fi }

set_colors(){
  export RED="\033[0;31m"
  export BLU="\033[0;34m"
  export GRN="\033[0;32m"
  export YEL="\033[33;m"
  export CYN="\033[0;36m"
  export MAG="\033[35m"
  export BWHT="\033[1m"
  export NC="\033[0m"
}

unset_colors(){
  export RED=''
  export BLU=''
  export GRN=''
  export YEL=''
  export CYN=''
  export MAG=''
  export BWHT=''
  export NC=''
}

configure_colors(){
  debug
  if test -t 1; then
    number_colors=$(tput colors)
    if test -n "${number_colors}" && test ${number_colors} -ge 6; then
      set_colors
    else
      unset_colors
    fi
  fi
}

check_root(){
  debug
  if [[ $EUID -ne 0 ]]; then
    fatal "Please run this script as root my friend" 1>&2
  fi
}

#
# HTTP Proxy configs
#
[ -z "$HTTP_PROXY_ADDRESS" ] && HTTP_PROXY_ADDRESS=10.32.150.40
[ -z "$HTTP_PROXY_PORT" ] && HTTP_PROXY_PORT=82
[ -z "$HTTPS_PROXY_ADDRESS" ] && HTTPS_PROXY_ADDRESS=10.32.150.40
[ -z "$HTTPS_PROXY_PORT" ] && HTTPS_PROXY_PORT=82

# cd /usr/src
# git -c "http.proxy=http://$PROXY_USER:$PROXY_PASS@10.32.150.40:82" \
#   clone http://github.com/ansible/ansible.git -b stable-2.4 --recursive

install_ssh_ask_pass(){
  debug
  info "Installing ssh ask pass"
  yum -y install openssh-askpass
}

ask_proxy_creds(){
  debug
  read -p "Enter proxy username: " PROXY_USER
  read -s -p "Enter proxy password: " PROXY_PASS
}

check_proxy_credentials(){
  debug
  if [ -z "$PROXY_USER" ] && [ -z "$PROXY_PASS" ]; then
    ask_proxy_creds
  fi

  if [ ! -z "$PROXY_USER" ] && [ ! -z "$PROXY_PASS" ]; then
    echo_blue "Setting proxy"
    HTTP_PROXY=http://$PROXY_USER:$PROXY_PASS@$HTTP_PROXY_ADDRESS:$HTTP_PROXY_PORT/
    HTTPS_PROXY=https://$PROXY_USER:$PROXY_PASS@$HTTPS_PROXY_ADDRESS:$HTTPS_PROXY_PORT/
    export HTTP_PROXY=$HTTP_PROXY
    export HTTPS_PROXY=$HTTPS_PROXY
  else
    echo
    echo_red "No proxy"
  fi
}

#!/bin/sh
#TODO.md
yum_makecache_retry() {
  debug
  tries=0
  until [ $tries -ge 5 ]
  do
    yum makecache && break
    let tries++
    sleep 1
  done
}

set_debug_flags(){
  debug
  if [ "x$KITCHEN_LOG" = "xDEBUG" -o "x$OMNIBUS_ANSIBLE_LOG" = "xDEBUG" ]; then
    export PS4='(${BASH_SOURCE}:${LINENO}): - [${SHLVL},${BASH_SUBSHELL},$?] $ '
    set -x
  fi
}

install_ansible_with_git(){
  debug
  versionTag=${1:-'v2.4.2.0-1'}
  ansibleHosts=${2:-'/etc/ansible/hosts'}

  # Install Git
  # The most stable way of getting the latest version of ansible to get it directly from the git repo
  info "[Install Ansible] Install Git"
  yum install -y git-core

  # Install Ansible Dependencies
  info '[Install Ansible] Install dependencies'
  yum install -y python-setuptools
  easy_install jinja2
  easy_install pyyaml
  easy_install paramiko

  # Install Ansible
  info "[Install Ansible] Go to Home folder"
  cd ~
  info '[Install Ansible] Git Clone Ansible'
  # git clone https://github.com/ansible/ansible.git ansible
  git -c "http.proxy=http://$PROXY_USER:$PROXY_PASS@10.32.150.40:82" clone http://github.com/ansible/ansible.git -b stable-2.4 --recursive ansible
  cd ansible

  info '[Install Ansible] Checkout to desired tag'
  git checkout $versionTag

  info '[Install Ansible] Make and Install'
  make install

  info '[Install Ansible] Clean up!'
  cd ..
  rm -rf ansible

  info '[Install Ansible] Copy Ansible HOSTS'
  mkdir -p /etc/ansible && cp -fr $ansibleHosts /etc/ansible/hosts

  info '[Install Ansible] Update Permissions on hosts file'
  # Giving exec permission causes issues when running ansible
  chmod 644 /etc/ansible/hosts

  info '[Install Ansible] Export ANSIBLE_HOST path'
  export ANSIBLE_HOSTS=/etc/ansible/hosts

  info '[Install Ansible] Done!'
}

#
# APT-GET
#
debian_ubuntu_distros_install(){
  debug
  apt-get update
  # Install via package
  # apt-get update && \
  # apt-get install --no-install-recommends -y software-properties-common && \
  # apt-add-repository ppa:ansible/ansible && \
  # apt-get update && \
  # apt-get install -y ansible

  # Install required Python libs and pip
  apt-get install -y  python-pip python-yaml python-jinja2 python-httplib2 python-paramiko python-pkg-resources
  [ -n "$( apt-cache search python-keyczar )" ] && apt-get install -y  python-keyczar
  if ! apt-get install -y git ; then
    apt-get install -y git-core
  fi
  # If python-pip install failed and setuptools exists, try that
  if [ -z "$(which pip)" -a -z "$(which easy_install)" ]; then
    apt-get -y install python-setuptools
    easy_install pip
  elif [ -z "$(which pip)" -a -n "$(which easy_install)" ]; then
    easy_install pip
  fi
  # If python-keyczar apt package does not exist, use pip
  [ -z "$( apt-cache search python-keyczar )" ] && sudo pip install python-keyczar

  # Install passlib for encrypt
  apt-get install -y build-essential
  apt-get install -y python-all-dev python-mysqldb sshpass && pip install pyrax pysphere boto passlib dnspython

  # Install Ansible module dependencies
  apt-get install -y bzip2 file findutils git gzip mercurial procps subversion sudo tar debianutils unzip xz-utils zip python-selinux
}

#
# YUM DISTROS
#
yellow_dog_updater_modified_distros_install(){
  debug
  # Install required Python libs and pip
  # Fix EPEL Metalink SSL error
  # - workaround: https://community.hpcloud.com/article/centos-63-instance-giving-cannot-retrieve-metalink-repository-epel-error
  # - SSL secure solution: Update ca-certs!!
  #   - http://stackoverflow.com/q/26734777/645491#27667111
  #   - http://serverfault.com/q/637549/77156
  #   - http://unix.stackexchange.com/a/163368/7688
  yum -y install ca-certificates nss
  yum clean all
  rm -rf /var/cache/yum
  yum_makecache_retry
  yum -y install epel-release
  # One more time with EPEL to avoid failures
  yum_makecache_retry

  yum -y install python-pip PyYAML python-jinja2 python-httplib2 python-keyczar python-paramiko git
  # If python-pip install failed and setuptools exists, try that
  if [ -z "$(which pip)" -a -z "$(which easy_install)" ]; then
    yum -y install python-setuptools
    easy_install pip
  elif [ -z "$(which pip)" -a -n "$(which easy_install)" ]; then
    easy_install pip
  fi

  # Install passlib for encrypt
  yum -y groupinstall "Development tools"
  yum -y install python-devel MySQL-python sshpass && pip install pyrax pysphere boto passlib dnspython

  # Install Ansible module dependencies
  yum -y install bzip2 file findutils git gzip hg svn sudo tar which unzip xz zip libselinux-python
  [ -n "$(yum search procps-ng)" ] && yum -y install procps-ng || yum -y install procps
}

# ########################
# MAIN INSTALLATION FLOW
# ########################
install_ansible(){
  debug
  if [ ! $(which ansible-playbook) ]; then
    if [ -f /etc/centos-release ] || [ -f /etc/redhat-release ] || [ -f /etc/oracle-release ] || [ -f /etc/system-release ] || grep -q 'Amazon Linux' /etc/system-release; then

      yellow_dog_updater_modified_distros_install

    elif [ -f /etc/debian_version ] || [ grep -qi ubuntu /etc/lsb-release ] || grep -qi ubuntu /etc/os-release; then

      debian_ubuntu_distros_install
    else
      warning 'BOLLOCKS ROGÉRIO!!'

      warning 'Could not detect distro or distro unsupported'
      warning 'Trying to install ansible via pip without some dependencies'
      warning 'Not all functionality of ansible may be available'

      warning 'Gonna try installing ansible using git'

      install_ansible_with_git
    fi

    mkdir /etc/ansible/
    echo -e '[local]\nlocalhost\n' > /etc/ansible/hosts
    pip install ansible

    if [ -f /etc/centos-release ] || [ -f /etc/redhat-release ] || [ -f /etc/oracle-release ] || [ -f /etc/system-release ] || grep -q 'Amazon Linux' /etc/system-release; then
      # Fix for pycrypto pip / yum issue
      # https://github.com/ansible/ansible/issues/276
      if  ansible --version 2>&1  | grep -q "AttributeError: 'module' object has no attribute 'HAVE_DECL_MPZ_POWM_SEC'" ; then
        warning 'Re-installing python-crypto package to workaround ansible/ansible#276'
        warning 'https://github.com/ansible/ansible/issues/276'
        pip uninstall -y pycrypto
        yum erase -y python-crypto
        yum install -y python-crypto python-paramiko
      fi
    fi
  fi
}

if [[ "${BASH_SOURCE[0]}" = "$0" ]]; then
    trap cleanup EXIT

    configure_colors

    check_root

    bump_step "Install ssh ask pass"
    separator
    install_ssh_ask_pass

    bump_step "Configure HTTP proxy"
    separator
    [ -z "$NO_PROXY" ] && check_proxy_credentials || echo_green 'No proxy true'

    bump_step "Set debug flags"
    separator
    set_debug_flags

    bump_step "Install ansible"
    separator
    install_ansible
fi