[系统运维]openstack集群停电后恢复使用记录

实验室openstack集群在停电后dashboard访问不了
通过一番操作又起来了，具体是为什么也不深究了 人生苦短

看日志

cd /var/log/nova
vi nova-api.log

发现数据库连不上

操作1

给keystone用户赋予权限

mysql -u root -p

GRANT ALL PRIVILEGES ON keystone.* TO ‘keystone’@’%’ IDENTIFIED BY ‘passwordxxx’;

flush privileges;

操作2

vim /etc/openstack-dashboard/local_settings

#SESSION_ENGINE = ‘django.contrib.sessions.backends.cache’
SESSION_ENGINE = ‘django.contrib.sessions.backends.file’
重启httpd服务

systemctl restart httpd memcached
systemctl status httpd memcached

可以了