安装placement

• 创建数据库

mysql -u root -p

MariaDB [(none)]> CREATE DATABASE placement;

MariaDB [(none)]> GRANT ALL PRIVILEGES ON placement.* TO 'placement'@'localhost' \
  IDENTIFIED BY 'xxxxxxx';
MariaDB [(none)]> GRANT ALL PRIVILEGES ON placement.* TO 'placement'@'%' \
  IDENTIFIED BY 'xxxxxxx';

• 配置用户和端点

  • 用户账密placement:xxxxxxx

# 环境变量
. admin-openrc
# 创建placement用户
openstack user create --domain default --password-prompt placement
# 配置为admin角色权限
openstack role add --project service --user placement admin
# 创建Placement API
openstack service create --name placement \
  --description "Placement API" placement
# 创建端口 
openstack endpoint create --region RegionOne \
  placement public http://controller:8778

openstack endpoint create --region RegionOne \
  placement internal http://controller:8778

openstack endpoint create --region RegionOne \
  placement admin http://controller:8778

• 安装服务

yum install openstack-placement-api -y

• 配置服务

vim /etc/placement/placement.conf

[placement_database]
# ...
connection = mysql+pymysql://placement:xxxxxxx@controller/placement

[api]
# ...
auth_strategy = keystone

[keystone_authtoken]
# ...
auth_url = http://controller:5000/v3
memcached_servers = controller:11211
auth_type = password
project_domain_name = Default
user_domain_name = Default
project_name = service
username = placement
password = xxxxxxx

• 同步placement数据库

su -s /bin/sh -c "placement-manage db sync" placement

• 重启httpd服务

systemctl restart httpd

• 验证

placement-status upgrade check
# 以下验证命令无验证
# pip3 install osc-placement -i https://pypi.tuna.tsinghua.edu.cn/simple/
# openstack --os-placement-api-version 1.2 resource class list --sort-column name
# openstack --os-placement-api-version 1.6 trait list --sort-column name

问题解决

(pymysql.err.OperationalError) (1040, u'Too many connections') (Background on this error at: http://sqlalche.me/e/e3q8)

mysql>mysql -u root -p

mysql>show variables like 'max_connections';(查可以看当前的最大连接数)

msyql>set global max_connections=1000;(设置最大连接数为1000，可以再次查看是否设置成功)

mysql>exit(推出)