搭建多OpenStack多節點私有云平臺)(八)(新增一個computer節點)
阿新 • • 發佈：2021-01-07
新增一個computer節點
1、新增一個computer節點
| IP地址 | 主機名 | 記憶體 | 磁碟 | 用途 |
|---|---|---|---|---|
| ens33: 192.168.25.145 10.0.0.21 | compute2 | 4G | 20G | 計算節點 |
克隆一臺虛擬機器：根據節點不同分別進行修改，我以一臺佈置好網路和計算服務虛擬機器為例子。
1、修改IP地址
[root@compute1 ~]# vim /etc/sysconfig/network-scripts/ifcfg-ens33
IPADDR=192.168.25.145
[root@compute1 ~]# systemctl restart network
2、修改主機名，對映主機地址
[root@compute1 ~]# hostnamectl set-hostname compute2
[root@compute1 ~]# vim /etc/hosts
192.168.25.145 compute2
3、檢視時間同步
[root@compute2 ~]# chronyc sources 210 Number of sources = 1 MS Name/IP address Stratum Poll Reach LastRx Last sample =============================================================================== ^* controller 10 10 377 762 -49us[ -83us] +/- 247us
4、修改檔案 [root@compute2 ~]# vim /etc/nova/nova.conf（修改myid）
[DEFAULT]
my_ip = 192.168.25.145
5、確認資料庫裡有這計算機（控制節點）
[root@controller ~]# openstack compute service list --service nova-compute +----+--------------+----------+------+---------+-------+----------------------------+ | ID | Binary | Host | Zone | Status | State | Updated At | +----+--------------+----------+------+---------+-------+----------------------------+ | 7 | nova-compute | compute1 | nova | enabled | up | 2020-11-29T11:59:52.000000 | | 8 | nova-compute | compute2 | nova | enabled | up | 2020-11-29T11:59:50.000000 | +----+--------------+----------+------+---------+-------+----------------------------+
6、驗證安裝
[root@controller ~]# openstack compute service list
+----+------------------+------------+----------+---------+-------+----------------------------+
| ID | Binary | Host | Zone | Status | State | Updated At |
+----+------------------+------------+----------+---------+-------+----------------------------+
| 1 | nova-consoleauth | controller | internal | enabled | up | 2020-11-29T12:01:23.000000 |
| 2 | nova-scheduler | controller | internal | enabled | up | 2020-11-29T12:01:23.000000 |
| 3 | nova-conductor | controller | internal | enabled | up | 2020-11-29T12:01:20.000000 |
| 7 | nova-compute | compute1 | nova | enabled | up | 2020-11-29T12:01:22.000000 |
| 8 | nova-compute | compute2 | nova | enabled | up | 2020-11-29T12:01:20.000000 |
+----+------------------+------------+----------+---------+-------+----------------------------+
7、檢視網路是否需要修改
[root@controller ~]# openstack network agent list
+--------------------------------------+--------------------+------------+-------------------+-------+-------+---------------------------+
| ID | Agent Type | Host | Availability Zone | Alive | State | Binary |
+--------------------------------------+--------------------+------------+-------------------+-------+-------+---------------------------+
| 2515ae8e-0aa2-461b-a3d1-c4914f8b6b25 | Metadata agent | controller | None | :-) | UP | neutron-metadata-agent |
| 47b8b775-31c6-4230-96e6-472527ae6907 | DHCP agent | controller | nova | :-) | UP | neutron-dhcp-agent |
| 99386680-0335-4a55-8342-a8f12d1a23a7 | Linux bridge agent | compute1 | None | :-) | UP | neutron-linuxbridge-agent |
| ca18ebd4-05de-4f70-9eb6-221e007e8daf | Linux bridge agent | controller | None | :-) | UP | neutron-linuxbridge-agent |
| de80e993-d287-4cad-a8ed-732e8d661127 | Linux bridge agent | compute2 | None | :-) | UP | neutron-linuxbridge-agent |
+--------------------------------------+--------------------+------------+-------------------+-------+-------+---------------------------+
8、在新節點建立例項，驗證計算節點
-
命令建立
. admin-openrc1、檢視有效區域
[root@controller ~]# openstack availability zone list +-----------+-------------+ | Zone Name | Zone Status | +-----------+-------------+ | internal | available | | nova | available | | nova | available | +-----------+-------------+2、檢視有效主機列表
[root@controller ~]# openstack host list +------------+-------------+----------+ | Host Name | Service | Zone | +------------+-------------+----------+ | controller | consoleauth | internal | | controller | scheduler | internal | | controller | conductor | internal | | compute1 | compute | nova | | compute2 | compute | nova | +------------+-------------+----------+3、檢視有效計算節點列表
[root@controller ~]# openstack hypervisor list +----+---------------------+-----------------+----------------+-------+ | ID | Hypervisor Hostname | Hypervisor Type | Host IP | State | +----+---------------------+-----------------+----------------+-------+ | 1 | compute1 | QEMU | 192.168.16.143 | up | | 2 | compute2 | QEMU | 192.168.16.143 | up | +----+---------------------+-----------------+----------------+-------+4、查詢有網路列表
[root@controller ~]# openstack network list +--------------------------------------+------------+--------------------------------------+ | ID | Name | Subnets | +--------------------------------------+------------+--------------------------------------+ | 642e161d-f3f7-4dfa-abfc-d9a162dd9389 | myprovider | 8eeddf57-62ce-4f86-9dc7-1fc3f99069d4 | +--------------------------------------+------------+--------------------------------------+5、檢視安全組
[root@controller ~]# openstack security group list +--------------------------------------+---------+------------------------+----------------------------------+ | ID | Name | Description | Project | +--------------------------------------+---------+------------------------+----------------------------------+ | d32b4ce4-5b2b-432f-8c1b-2af634676b23 | default | Default security group | 13c57ce9dd154c5fa3d9e3e1c75abc87 | +--------------------------------------+---------+------------------------+----------------------------------+6同步資料庫
su -s /bin/sh -c "nova-manage cell_v2 discover_hosts --verbose" nova7、建立網路例項
$ openstack server create --flavor m1.nano --image cirros --nic net-id=642e161d-f3f7-4dfa-abfc-d9a162dd9389 --security-group default --availability-zone nova:compute2:compute2 --key-name mykey computer2介面建立
1、管理員->計算->主機聚集->建立主機聚集group1，可用域group1->單獨選擇computer2
2、建立例項->可用域“group1”
2、glance映象服務遷移
1、在控制節點停止glance服務
[root@controller ~]# systemctl stop openstack-glance-api.service openstack-glance-registry.service
[root@controller ~]# systemctl disable openstack-glance-api.service openstack-glance-registry.service
2、glance資料遷移
-
在computer2上安裝資料庫mariadb，啟動服務
[root@compute2 ~]# yum install mariadb mariadb-server python2-PyMySQL -y [root@controller ~]# vi /etc/my.cnf.d/openstack.cnf [mysqld] bind-address = 192.168.25.145 default-storage-engine = innodb innodb_file_per_table max_connections = 4096 collation-server = utf8_general_ci character-set-server = utf8 [root@compute2 ~]# systemctl enable mariadb.service [root@compute2 ~]# systemctl start mariadb.service -
安全初始化
mysql_secure_installation（回車,n,y,y,y,y）
3、恢復glance資料庫的資料
-
到控制節點備份資料庫的資料
mysqldump -B glance >glance.sql -
將備份檔案推送到computer2
scp glance.sql 192.168.25.145:/root -
在computer2匯入資料庫庫檔案
mysql < glance.sql -
確認匯入檔案
mysql glance -e 'show tables;' -
登入資料庫建立授權命令
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'; 退出資料庫
4、在compute2上安裝配置glance服務
-
安裝glance服務
yum install openstack-glance -y -
獲取配置檔案（在控制節點上將配置檔案傳送至compute2上：）
[root@controller ~]# scp -rp /etc/glance/glance-api.conf 192.168.25.145:/etc/glance/glance-api.conf [root@controller ~]# scp -rp /etc/glance/glance-registry.conf 192.168.25.145:/etc/glance/glance-registry.conf -
修改配置檔案
vim /etc/glance/glance-api.conf和vim /etc/glance/glance-registry.conf的一下配置[database] ... connection = mysql+pymysql://glance:[email protected]/glance -
啟動服務
# systemctl start openstack-glance-api.service openstack-glance-registry.service # systemctl enable openstack-glance-api.service openstack-glance-registry.service -
驗證埠
netstat -lntup的9191和9292埠
5、映象檔案遷移（將控制節點上的映象檔案遷移到新的節點）
# scp -rp /var/lib/glance/images/* [email protected]:/var/lib/glance/images/
修改許可權
chown glance:glance /var/lib/glance/images/*
6、修改keystone裡的glance的服務命令（這一步的操作都在控制節點控制節點）
# openstack endpoint list|grep image（先檢視，發現地址還是以前的，於是輸入下面的程式碼修改地址）
[root@controller ~]# openstack endpoint list|grep image
| 7c16509eac794239945b9168a7321ad9 | RegionOne | glance | image | True | public | http://controller:9292 |
| d33ab9c8dec8441fb0b28c4eedcf331b | RegionOne | glance | image | True | internal | http://controller:9292 |
| facb6ee1c4544facafd52c2c995e1ae0 | RegionOne | glance | image | True | admin | http://controller:9292 |
-- 備份endpoint表（控制節點）
# mysqldump keystone endpoint >endpoint.sql
修改資料庫配置檔案：
sed -i 's#http://controller:9292#http://192.168.25.145:9292#g' endpoint.sql
# mysql keystone < endpoint.sql
# openstack endpoint list|grep image
| 7c16509eac794239945b9168a7321ad9 | RegionOne | glance | image | True | public | http://192.168.25.145:9292 |
| d33ab9c8dec8441fb0b28c4eedcf331b | RegionOne | glance | image | True | internal | http://192.168.25.145:9292 |
| facb6ee1c4544facafd52c2c995e1ae0 | RegionOne | glance | image | True | admin | http://192.168.25.145:9292 |
# openstack image list
7、修改所有節點nova配置檔案裡面的glance地址(每一個機子，包括controller,compute1,compute2)
# sed -i 's#http://controller:9292#http://192.168.25.145:9292#g' /etc/nova/nova.conf
# grep '9292' /etc/nova/nova.conf;
8、重啟服務
控制節點：
systemctl restart openstack-nova-api.service
計算節點(2臺計算節點都要)
systemctl restart openstack-nova-compute.service
9、驗證:上傳映象，然後基於映象建立例項
1、上傳映象：
專案-映象-建立映象（centos-cloud）
image.png
上傳後檢視伺服器上的映象儲存位置：/var/lib/glance/image
2、建立例項：
專案-例項-啟用例項
image.png
qemu-img info .. #檢視映象資訊
啟動例項過程中檢視nova中資訊：從glance上下載映象到伺服器本地，並進行格式轉換。下載後存放的位置：
/var/lib/nova/instance/_base/
以後啟動的例項都是基於base目錄下的檔案做的連結克隆
檢視有沒有安裝到compute2
cd /var/lib/glance/images
檢視有沒有資料