CentOS 7
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OpenStack Queens : Configure Aodh
2018/03/17
 
Install OpenStack Alarming Service (Aodh).
This example is based on the emvironment like follows.
     ------------+---------------------------+---------------------------+------------
                 |                           |                           |
             eth0|10.0.0.30              eth0|10.0.0.50              eth0|10.0.0.51
     +-----------+-----------+   +-----------+-----------+   +-----------+-----------+
     |    [ Control Node ]   |   |    [ Storage Node ]   |   |    [ Compute Node ]   |
     |                       |   |                       |   |                       |
     |  MariaDB    RabbitMQ  |   |      Open_vSwitch     |   |        Libvirt        |
     |  Memcached  httpd     |   |        L2_Agent       |   |     Nova_Compute      |
     |  Keystone   Glance    |   |        L3_Agent       |   |      Open_vSwitch     |
     |  Nova_API  Cinder_API |   |     Metadata_Agent    |   |        L2_Agent       |
     |  Neutron_Server       |   |     Cinder_Volume     |   |  Ceilometer_Compute   |
     |  Metadata_Agent       |   |        Heat_API       |   |                       |
     |  Gnocchi              |   |      Heat Engine      |   |                       |
     |  Ceilometer_Central   |   |                       |   |                       |
     |  Aodh_Evaluator       |   |                       |   |                       |
     +-----------------------+   +-----------------------+   +-----------------------+

[1]
Install Gnocchi and Ceilometer first.
[2] Add users and others for Aodh in Keystone.
# add aodh user (set in service project)

[root@dlp ~(keystone)]#
openstack user create --domain default --project service --password servicepassword aodh

+---------------------+----------------------------------+
| Field               | Value                            |
+---------------------+----------------------------------+
| default_project_id  | b1da1070c8af427886d0202f8bbe414f |
| domain_id           | default                          |
| enabled             | True                             |
| id                  | b29873fbbe8947b7bac47ee3ade2fa97 |
| name                | aodh                             |
| options             | {}                               |
| password_expires_at | None                             |
+---------------------+----------------------------------+

# add aodh user in admin role

[root@dlp ~(keystone)]#
openstack role add --project service --user aodh admin
# add service entry for aodh

[root@dlp ~(keystone)]#
openstack service create --name aodh --description "Telemetry Alarming" alarming

+-------------+----------------------------------+
| Field       | Value                            |
+-------------+----------------------------------+
| description | Telemetry Alarming               |
| enabled     | True                             |
| id          | 992242c1027c426eaf3c5724de9d1ada |
| name        | aodh                             |
| type        | alarming                         |
+-------------+----------------------------------+

# define keystone host

[root@dlp ~(keystone)]#
export controller=10.0.0.30
# add endpoint for aodh (public)

[root@dlp ~(keystone)]#
openstack endpoint create --region RegionOne alarming public http://$controller:8042

+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | 10d1623faa4c432aa7665dbdc8c3a31b |
| interface    | public                           |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 992242c1027c426eaf3c5724de9d1ada |
| service_name | aodh                             |
| service_type | alarming                         |
| url          | http://10.0.0.30:8042            |
+--------------+----------------------------------+

# add endpoint for aodh (internal)

[root@dlp ~(keystone)]#
openstack endpoint create --region RegionOne alarming internal http://$controller:8042

+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | 7ffda3d64b174ee3874e3f08f4b9bb91 |
| interface    | internal                         |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 992242c1027c426eaf3c5724de9d1ada |
| service_name | aodh                             |
| service_type | alarming                         |
| url          | http://10.0.0.30:8042            |
+--------------+----------------------------------+

# add endpoint for aodh (admin)

[root@dlp ~(keystone)]#
openstack endpoint create --region RegionOne alarming admin http://$controller:8042

+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | 20b458836105469cadf7562b68d86209 |
| interface    | admin                            |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 992242c1027c426eaf3c5724de9d1ada |
| service_name | aodh                             |
| service_type | alarming                         |
| url          | http://10.0.0.30:8042            |
+--------------+----------------------------------+
[3] Add a User and Database on MariaDB for Aodh.
[root@dlp ~(keystone)]#
mysql -u root -p

Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 71
Server version: 10.1.20-MariaDB MariaDB Server

Copyright (c) 2000, 2016, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

MariaDB [(none)]>
create database aodh;

Query OK, 1 row affected (0.00 sec)
MariaDB [(none)]>
grant all privileges on aodh.* to aodh@'localhost' identified by 'password';

Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]>
grant all privileges on aodh.* to aodh@'%' identified by 'password';

Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]>
flush privileges;

Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]>
exit

Bye
[4] Install Aodh.
# install from Queens, EPEL

[root@dlp ~(keystone)]#
yum --enablerepo=centos-openstack-queens,epel -y install openstack-aodh-api openstack-aodh-evaluator openstack-aodh-notifier openstack-aodh-listener openstack-aodh-expirer python2-aodhclient
[5] Configure Aodh.
[root@dlp ~(keystone)]#
mv /etc/aodh/aodh.conf /etc/aodh/aodh.conf.org

[root@dlp ~(keystone)]#
vi /etc/aodh/aodh.conf
# create new

[DEFAULT]
log_dir = /var/log/aodh
# RabbitMQ connection info
transport_url = rabbit://openstack:password@10.0.0.30

[api]
auth_mode = keystone
gnocchi_external_project_owner = service

[database]
# MariaDB connection info
connection = mysql+pymysql://aodh:password@10.0.0.30/aodh

# Keystone auth info
[keystone_authtoken]
www_authenticate_uri = http://10.0.0.30:5000
auth_url = http://10.0.0.30:5000
memcached_servers = 10.0.0.30:11211
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = aodh
password = servicepassword

[service_credentials]
auth_url = http://10.0.0.30:5000/v3
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = aodh
password = servicepassword
interface = internalURL

[root@dlp ~(keystone)]#
vi /etc/httpd/conf.d/20-aodh_wsgi.conf
# create new

Listen 8042
<VirtualHost *:8042>
    DocumentRoot "/var/www/cgi-bin/aodh"
    <Directory "/var/www/cgi-bin/aodh">
        AllowOverride None
        Require all granted
    </Directory>

    CustomLog "/var/log/httpd/aodh_wsgi_access.log" combined
    ErrorLog "/var/log/httpd/aodh_wsgi_error.log"
    SetEnvIf X-Forwarded-Proto https HTTPS=1
    WSGIApplicationGroup %{GLOBAL}
    WSGIDaemonProcess aodh display-name=aodh_wsgi user=aodh group=aodh processes=6 threads=3
    WSGIProcessGroup aodh
    WSGIScriptAlias / "/var/www/cgi-bin/aodh/app"
</VirtualHost>

[root@dlp ~(keystone)]#
chmod 640 /etc/aodh/aodh.conf

[root@dlp ~(keystone)]#
chgrp aodh /etc/aodh/aodh.conf

[root@dlp ~(keystone)]#
mkdir /var/www/cgi-bin/aodh

[root@dlp ~(keystone)]#
cp /usr/lib/python2.7/site-packages/aodh/api/app.wsgi /var/www/cgi-bin/aodh/app

[root@dlp ~(keystone)]#
chown -R aodh. /var/www/cgi-bin/aodh

[root@dlp ~(keystone)]#
su -s /bin/bash aodh -c "aodh-dbsync"

[root@dlp ~(keystone)]#
systemctl start openstack-aodh-evaluator openstack-aodh-notifier openstack-aodh-listener

[root@dlp ~(keystone)]#
systemctl enable openstack-aodh-evaluator openstack-aodh-notifier openstack-aodh-listener

[root@dlp ~(keystone)]#
systemctl restart httpd

[6] If SELinux is enabled, change policy.
[root@dlp ~(keystone)]#
semanage port -a -t http_port_t -p tcp 8042

[7] If Firewalld is running, allow service port.
[root@dlp ~(keystone)]#
firewall-cmd --add-port=8042/tcp --permanent

success
[root@dlp ~(keystone)]#
firewall-cmd --reload

success
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