Add CentOS7 support for Swift

This PR Adds CentOS 7 support for Swift.
The following was required to get CentOS 7 to work:
* Add yum install path + packages
* Variablize rsync service name
* Gather network interface facts prior to setting storage/repl IPs
* Ensure /etc/defaults/rsync is only set for apt installations.
* Ensure the rsyslog service is started and enabled.

Change-Id: Ibaf8bc8d54b55820e8b527b52940c61c05c732d8

handlers/main.yml

@@ -37,10 +37,12 @@
   service:
     name: "rsyslog"
     state: "restarted"
+    enabled: "yes"
+    sleep: 2
 
 - name: Restart rsync service
   service:
-    name: "rsync"
+    name: "{{ swift_rsync_service_name }}"
     state: "restarted"
     enabled: "yes"
     sleep: 2

meta/main.yml

@@ -31,6 +31,7 @@ galaxy_info:
     - openstack
 dependencies:
   - pip_install
+  - rsyslog_client
   - role: apt_package_pinning
     when:
       - ansible_pkg_mgr == 'apt'

releasenotes/notes/os_swift-centos7-support-23846d7eafbfa957.yaml

@@ -0,0 +1,3 @@
+---
+features:
+  - CentOS7/RHEL support has been added to the os_swift role.

tasks/install-yum.yml

@@ -0,0 +1,33 @@
+---
+# Copyright 2014, Rackspace US, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+- name: Install RDO package
+  yum:
+    pkg: "{{ rdo_package }}"
+    state: "present"
+  register: install_cloud_rdo_package
+  until: install_cloud_rdo_package | success
+  retries: 5
+  delay: 2
+
+- name: Install yum packages
+  yum:
+    pkg: "{{ item }}"
+    state: "{{ swift_package_state }}"
+  register: install_packages
+  until: install_packages|success
+  retries: 5
+  delay: 2
+  with_items: "{{ swift_distro_packages }}"

tasks/swift_calculate_addresses.yml

@@ -41,6 +41,14 @@
   tags:
     - always
 
+- name: Gather facts for storage_bridge
+  setup:
+    filter: "{{ swift_storage_bridge }}"
+  when:
+    - swift_storage_bridge is defined
+    - hostvars[inventory_hostname][swift_storage_bridge] is defined
+    - swift_storage_address is not defined
+
 - name: Swift storage address not found
   fail:
     msg: "{{ swift.storage_network }} not found on host, can't find storage address."
@@ -96,6 +104,14 @@
   tags:
     - always
 
+- name: Gather facts for storage_bridge
+  setup:
+    filter: "{{ swift_replication_bridge }}"
+  when:
+    - swift_replication_bridge is defined
+    - hostvars[inventory_hostname][swift_replication_bridge] is defined
+    - swift_replication_address is not defined
+
 - name: Swift replication address not found
   fail:
     msg: "{{ swift.replication_network }} not found on host, can't find swift_replican_address"

tasks/swift_install.yml

@@ -17,6 +17,10 @@
   static: no
   when: ansible_pkg_mgr == 'apt'
 
+- include: install-yum.yml
+  static: no
+  when: ansible_pkg_mgr == 'yum'
+
 - name: Create developer mode constraint file
   copy:
     dest: "/opt/developer-pip-constraints.txt"

tasks/swift_storage_hosts_setup.yml

@@ -43,11 +43,13 @@
     mode: "0644"
   notify: "Restart rsync service"
 
-- name: "Enable rsync in defaults"
+# Red Hat/CentOS are enabled as part of the handler
+- name: "Enable rsync service in defaults (Debian)"
   lineinfile:
     dest: "/etc/default/rsync"
     line: "RSYNC_ENABLE=true"
     regexp: "^RSYNC_ENABLE*"
+  when: ansible_pkg_mgr =="apt"
   notify: "Restart rsync service"
 
 - name: "Setup swift-recon-cron cron job"

tests/ansible-role-requirements.yml

@@ -42,3 +42,7 @@
   src: https://git.openstack.org/openstack/openstack-ansible-os_keystone
   scm: git
   version: master
+- name: rsyslog_client
+  src: https://git.openstack.org/openstack/openstack-ansible-rsyslog_client
+  scm: git
+  version: master

vars/debian.yml

@@ -26,3 +26,7 @@ swift_distro_packages:
   - python-dev
   - rsync
   - libssl-dev
+
+swift_syslog_user_name: syslog
+swift_syslog_group_name: syslog
+swift_rsync_service_name: rsync

vars/redhat-7.yml

@@ -0,0 +1,33 @@
+---
+# Copyright 2016, Rackspace US, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+swift_distro_packages:
+  - curl
+  - gcc
+  - git
+  - liberasurecode
+  - liberasurecode-devel
+  - libffi-devel
+  - openssh-server
+  - python-devel
+  - rsync
+  - openssl-devel
+  - cronie
+  - cronie-anacron
+
+swift_syslog_user_name: root
+swift_syslog_group_name: root
+swift_rsync_service_name: rsyncd
+rdo_package: "https://rdoproject.org/repos/rdo-release.rpm"