CentOS 8: Add rabbitmq-3.7.24 image (CentOS 7 only)

The CentOS 7 rabbitmq image contains 3.7.10, and the CentOS 8 rabbitmq
image contains 3.7.24. These versions are not compatible, which prevents
a rolling migration from CentOS 7 to CentOS 8.

This change adds a rabbitmq-3.7.24 image, available for CentOS 7 images
only. This provides a path for migration, by first upgrading all CentOS
7 rabbitmq containers to use this image.

Depends-On: https://review.opendev.org/720218

Change-Id: Icff279be07c4767dd0b18c697894373f46102bf1
Partially-Implements: blueprint centos-rhel-8

docker/rabbitmq-3.7.24/Dockerfile.j2

@@ -0,0 +1,49 @@
+FROM {{ namespace }}/{{ image_prefix }}base:{{ tag }}
+LABEL maintainer="{{ maintainer }}" name="{{ image_name }}" build-date="{{ build_date }}"
+
+{% block rabbitmq_header %}{% endblock %}
+
+{% import "macros.j2" as macros with context %}
+
+{{ macros.configure_user(name='rabbitmq') }}
+
+{% block rabbitmq_install %}
+{% if base_package_type == 'rpm' %}
+    {% set rabbitmq_packages = [
+        'hostname',
+        'rabbitmq-server-3.7.24',
+    ] %}
+{% endif %}
+
+COPY rabbitmq_rabbitmq-erlang.repo rabbitmq_rabbitmq-server.repo /etc/yum.repos.d/
+RUN rpm --import https://www.rabbitmq.com/rabbitmq-release-signing-key.asc
+{{ macros.install_packages(rabbitmq_packages | customizable("packages")) }}
+
+{% endblock %}
+
+{% block rabbitmq_install_plugins %}
+
+RUN rm -rf /var/lib/rabbitmq/* \
+    && mkdir -p /usr/lib/rabbitmq/plugins \
+    && /usr/lib/rabbitmq/bin/rabbitmq-plugins enable --offline \
+       rabbitmq_management
+
+
+    {% set rabbitmq_plugins = [
+        'accept-0.3.3.ez',
+        'prometheus-3.5.1.ez',
+        'prometheus_cowboy-0.1.4.ez',
+        'prometheus_httpd-2.1.8.ez',
+        'prometheus_rabbitmq_exporter-3.7.2.4.ez'
+    ] %}
+
+{{ macros.install_rabbitmq_plugins(rabbitmq_plugins | customizable("plugins"), version="v3.7.2.4") }}
+{% endblock %}
+
+COPY extend_start.sh /usr/local/bin/kolla_extend_start
+RUN chmod 755 /usr/local/bin/kolla_extend_start
+
+{% block rabbitmq_footer %}{% endblock %}
+{% block footer %}{% endblock %}
+
+USER rabbitmq

docker/rabbitmq-3.7.24/extend_start.sh

@@ -0,0 +1,26 @@
+#!/bin/bash
+
+: ${RABBITMQ_LOG_DIR:=/var/log/kolla/rabbitmq}
+
+# Bootstrap and exit if KOLLA_BOOTSTRAP variable is set. This catches all cases
+# of the KOLLA_BOOTSTRAP variable being set, including empty.
+if [[ "${!KOLLA_BOOTSTRAP[@]}" ]]; then
+
+# NOTE(sbezverk): In kubernetes environment, if this file exists from previous
+# bootstrap, the system does not allow to overwrite it (it bootstrap files with
+# permission denied error) but it allows to delete it and then recreate it.
+    if [[ -e "/var/lib/rabbitmq/.erlang.cookie" ]]; then
+        rm -f /var/lib/rabbitmq/.erlang.cookie
+    fi
+    echo "${RABBITMQ_CLUSTER_COOKIE}" > /var/lib/rabbitmq/.erlang.cookie
+    chmod 400 /var/lib/rabbitmq/.erlang.cookie
+    exit 0
+fi
+
+if [[ ! -d "${RABBITMQ_LOG_DIR}" ]]; then
+    mkdir -p ${RABBITMQ_LOG_DIR}
+fi
+
+if [[ $(stat -c %a ${RABBITMQ_LOG_DIR}) != "755" ]]; then
+    chmod 755 ${RABBITMQ_LOG_DIR}
+fi

docker/rabbitmq-3.7.24/rabbitmq_rabbitmq-erlang.repo

@@ -0,0 +1,7 @@
+[rabbitmq_rabbitmq-erlang]
+name=rabbitmq_rabbitmq-erlang
+baseurl=https://dl.bintray.com/rabbitmq-erlang/rpm/erlang/22/el/$releasever/
+repo_gpgcheck=1
+gpgcheck=1
+enabled=1
+gpgkey=https://www.rabbitmq.com/rabbitmq-release-signing-key.asc

docker/rabbitmq-3.7.24/rabbitmq_rabbitmq-server.repo

@@ -0,0 +1,7 @@
+[rabbitmq_rabbitmq-server]
+name=rabbitmq_rabbitmq-server
+baseurl=https://dl.bintray.com/rabbitmq/rpm/rabbitmq-server/v3.7.x/el/$releasever/
+repo_gpgcheck=1
+gpgcheck=1
+enabled=1
+gpgkey=https://www.rabbitmq.com/rabbitmq-release-signing-key.asc

kolla/image/build.py

@@ -161,6 +161,7 @@ UNBUILDABLE_IMAGES = {
         "nova-spicehtml5proxy",  # Missing spicehtml5 package
         "opendaylight",          # Missing opendaylight repo
         "ovsdpdk",               # Not supported on CentOS
+        "rabbitmq-3.7.24",       # Required only for CentOS 7 to 8 migration
         "sensu-base",            # Missing sensu package
         "tgtd",                  # Not supported on CentOS 8
     },
@@ -179,12 +180,14 @@ UNBUILDABLE_IMAGES = {
         "opendaylight",  # no binary package
         "ovsdpdk",
         "qdrouterd",
+        "rabbitmq-3.7.24",  # Required only for CentOS 7 to 8 migration
         "sensu-base",
         "telegraf",      # no binary package
     },
     'ubuntu': {
         "cyborg-base",
         "qdrouterd",  # There is no qdrouterd package for ubuntu bionic
+        "rabbitmq-3.7.24",  # Required only for CentOS 7 to 8 migration
     },
 
     'debian+aarch64': {

releasenotes/notes/rabbitmq-3.7.24-ba6f071b59000731.yaml

@@ -0,0 +1,6 @@
+---
+upgrade:
+  - |
+    Adds a new ``rabbitmq-3.7.24`` image for CentOS 7 only. This image is used
+    to provide compatibility between RabbitMQ versions in CentOS 7 and 8
+    images. This image will only be available in the Train release.