添加新的计算节点
一、克隆计算节点 (Networking服务安装完的快照）
修改ip地址
$ vi /etc/sysconfig/network-scripts/ifcfg-ens33
IPADDR=192.168.100.42
重启网络
$ systemctl restart network
修改所有hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 compute2 #修改
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 compute2 #修改
192.168.100.41 controller controller.locallocaldomain
192.168.100.42 compute2 compute2.locallocaldomain #添加
192.168.100.43 compute1 compute1.locallocaldomain
192.168.100.44 block1 block1.locallocaldomain
修改hostname
$ hostnamectl set-hostname compute2
二、修改nova配置文件（新计算节点）
修改 /etc/nova/nova.conf ，修改为对应ip
$ vi /etc/nova/nova.conf
[DEFAULT]
my_ip = 192.168.100.42
...
[libvirt]
virt_type = qemu
cpu_mode = none
重启计算服务
$ systemctl restart libvirtd.service openstack-nova-compute.service
重启Linuxbridge代理
$ systemctl restart neutron-linuxbridge-agent.service
三、加入计算节点（控制节点）
发现计算节点
$ su -s /bin/sh -c "nova-manage cell_v2 discover_hosts --verbose" nova
查看服务状态
$ openstack hypervisor list
$ openstack compute service list --service nova-compute
$ openstack compute service list
$ openstack network agent list #缺少compute2则在compute2 重启Linuxbridge代理
创建实例，指定compute2节点
$ openstack server create --flavor m1.nano --image cirros --key-name mykey --availability-zone nova:compute2:compute2 computer2
迁移Glance到compute2
1、在控制节点停止glance服务（Controller）
$ systemctl stop openstack-glance-api.service openstack-glance-registry.service
$ systemctl disable openstack-glance-api.service openstack-glance-registry.service
2、compute2节点环境配置（Compute2）
-
在computer2上安装数据库mariadb，启动服务
$ yum install mariadb mariadb-server python2-PyMySQL -y $ vi /etc/my.cnf.d/openstack.cnf [mysqld] bind-address = 192.168.100.42 default-storage-engine = innodb innodb_file_per_table max_connections = 4096 collation-server = utf8_general_ci character-set-server = utf8 $ systemctl enable mariadb.service $ systemctl start mariadb.service -
安全初始化 （n,y,y,y,y）
$ mysql_secure_installation
3、对glance数据库进行修改（Controller）
-
到控制节点备份数据库的数据
$ mysqldump -B glance >glance.sql -
将备份文件推送到computer2
$ scp glance.sql 192.168.100.42:/root -
在computer2导入数据库库文件
$ mysql < glance.sql -
确认导入文件
$ mysql glance -e 'show tables;' -
登录数据库创建授权命令
mysql -u root -p GRANT ALL PRIVILEGES ON glance.* TO 'glance'@'localhost' IDENTIFIED BY 'GLANCE_DBPASS'; GRANT ALL PRIVILEGES ON glance.* TO 'glance'@'%' IDENTIFIED BY 'GLANCE_DBPASS';
4、安装配置glance服务（Compute2）
-
安装glance服务
$ yum install openstack-glance -y -
获取配置文件
$ scp -rp 192.168.100.41:/etc/glance/glance-api.conf /etc/glance/glance-api.conf $ scp -rp 192.168.100.41:/etc/glance/glance-registry.conf /etc/glance/glance-registry.conf -
修改配置文件
vim /etc/glance/glance-api.conf和vim /etc/glance/glance-registry.conf$ vi /etc/glance/glance-api.conf [database] ... connection = mysql+pymysql://glance:GLANCE_DBPASS@192.168.100.42/glance $ vi /etc/glance/glance-registry.conf [database] ... connection = mysql+pymysql://glance:GLANCE_DBPASS@192.168.100.42/glance -
启动服务
$ systemctl start openstack-glance-api.service openstack-glance-registry.service $ systemctl enable openstack-glance-api.service openstack-glance-registry.service -
验证端口
netstat -lntup的9191和9292端口
5、镜像文件迁移（Compute2）
$ scp -rp 192.168.100.41:/var/lib/glance/images/* /var/lib/glance/images/
修改权限
$ chown glance:glance /var/lib/glance/images/*
6、修改keystone里的glance的服务命令（控制节点）
$ openstack endpoint list|grep image
# 备份endpoint表(也可以用数据库的update语句完成)
$ mysqldump keystone endpoint >endpoint.sql
$ cp endpoint.sql /opt/
$ vi endpoint.sql
:%s#http://controller:9292#http://192.168.100.42:9292#gc
:wq
# 或直接搜索修改
$ mysql keystone < endpoint.sql
$ openstack endpoint list|grep image
$ openstack image list
7、修改所有节点nova的配置文件（所有节点）
$ sed 's#api_servers = http://controller:9292#api_servers = http://192.168.100.42:9292#g' /etc/nova/nova.conf|grep 9292
$ sed -i 's#api_servers = http://controller:9292#api_servers = http://192.168.100.42:9292#g' /etc/nova/nova.conf|grep 9292
8、重启服务
控制节点：
$ systemctl restart openstack-nova-api
计算节点
$ systemctl restart openstack-nova-compute
9、验证以上所有操作
$ grep ERROR nova-api.log |tail -30