awx-host-replace-ansible-host

#!/bin/bash

# This script comes with ABSOLUTELY NO WARRANTY, use at own risk
# Copyright (C) 2021 Osiris Alejandro Gomez <osiris@gcoop.coop>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.

# shellcheck disable=SC2001
# shellcheck disable=SC1090
# shellcheck disable=SC1091
# shellcheck source=/dev/null

DIR_BIN=$(dirname "$0") && source "$DIR_BIN/awx-common"

function usage()
{
cat << EOF
Usage:

\`\`\`bash

  $BIN [HOST_INVENTORY]

\`\`\`

Replace \`ansible_host\` value with _FQDN_ in host_vars YAML files of inventory.

Example:

\`\`\`bash

  $BIN hosts-pve

\`\`\`

EOF
exit 0
}

[[ "$1" =~ ^[-]+(h|help) ]] && usage

[[ -z "$HOST_DOMAIN"         ]] && HOST_DOMAIN="$DEFAULT_HOST_DOMAIN"
[[ -z "$HOST_DOMAIN_PREFIX"  ]] && HOST_DOMAIN_PREFIX="$DEFAULT_HOST_DOMAIN_PREFIX"
[[ -z "$HOST_INVENTORY"      ]] && HOST_INVENTORY="$DEFAULT_HOST_INVENTORY"
[[ -z "$HOST_PREFIX_REPLACE" ]] && HOST_PREFIX_REPLACE="$DEFAULT_HOST_PREFIX_REPLACE"
[[ -z "$HOST_PREFIX_SEARCH"  ]] && HOST_PREFIX_SEARCH="$DEFAULT_HOST_PREFIX_SEARCH"
[[ -z "$HOST_SUFFIX"         ]] && HOST_SUFFIX="$DEFAULT_HOST_SUFFIX"

[[ -z "$1" ]] || HOST_INVENTORY="$1"

grep -E "^$HOST_PREFIX_SEARCH" "$HOST_INVENTORY" \
  | grep -v '\['                                 \
  | while read -r HOST
    do

      NUMBER="${HOST/$HOST_PREFIX_SEARCH/}"
      YAML="host_vars/$HOST.yml"
      FQDN="$HOST_PREFIX_REPLACE.$HOST_DOMAIN_PREFIX${NUMBER}.$HOST_DOMAIN"
      SUFFIX="$HOST_SUFFIX${NUMBER}"

      if [[ ! -e "$YAML" ]]
      then

YML=$(cat << EOF
---

ansible_host: $FQDN
hostname: $HOST
hostname_suffix: $SUFFIX
network_address_shift: 0
primary_macaddress: null
pve_group: $SUFFIX

EOF
)

        echo "$YML" > "$YAML" && echo "Generate $YAML ..."

      else

        sed -i "s/ansible_host:.*$/ansible_host: $FQDN/g" "$YAML"
        echo "Replace $FQDN in $YAML ..."

      fi

    done