Openstack 实战讲解之-----06-计算节点配置 推荐

一 控制节点服务状态

[root@linux-node1 ~]# nova service-list
+----+------------------+-------------+----------+---------+-------+----------------------------+-----------------+
| Id | Binary           | Host        | Zone     | Status  | State | Updated_at                 | Disabled Reason |
+----+------------------+-------------+----------+---------+-------+----------------------------+-----------------+
| 3  | nova-consoleauth | linux-node1 | internal | enabled | up    | 2017-01-02T07:33:06.000000 | -               |
| 4  | nova-conductor   | linux-node1 | internal | enabled | up    | 2017-01-02T07:33:06.000000 | -               |
| 5  | nova-scheduler   | linux-node1 | internal | enabled | up    | 2017-01-02T07:33:05.000000 | -               |
+----+------------------+-------------+----------+---------+-------+----------------------------+-----------------+

二 安装服务软件包
2.1 安装库包

1.
安装仓库：
yum install -y centos-release-openstack-newton
修改
openstack
源的地址为阿里云的地址（提高
yum
下载的速度）
sed -i "s#mirror.centos.org#mirrors.aliyun.com#g"
/etc/yum.repos.d/CentOS-OpenStack-newton.repo
2.
安装
OpenStack
客户端：
yum install -y python-openstackclient
yum install -y openstack-selinux
rpm -qa python-openstackclient openstack-selinux

2.2 安装服务软件包

yum install openstack-nova-compute

2.2.1 安装报错

Error downloading packages:
1:librados2-10.2.2-0.el7.x86_64: [Errno 256] No more mirrors to try.

解放方法：

[root@linux-node2 yum.repos.d]# cat CentOS-Ceph-Jewel.repo
# CentOS-Ceph-Jewel.repo
#
# Please see http://wiki.centos.org/SpecialInterestGroup/Storage for more
# information
[centos-ceph-jewel]
name=CentOS-$releasever - Ceph Jewel
baseurl=http://mirror.centos.org/centos/$releasever/storage/$basearch/ceph-jewel/
gpgcheck=0 #这里全部改成0
enabled=0 #这里全部改成0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-Storage

也可以从下面的链接下载包来安装
http://ftp.riken.jp/Linux/centos/7/storage/x86_64/ceph-jewel/
2.2.2 修改配置文件
这里很多配置和node1上面的nova配置文件一样，所以我们先把node1上面的配置文件拷贝过来，然后再修改配置，具体执行过程如下：

[root@linux-node1 yum.repos.d]# scp /etc/nova/nova.conf 192.168.56.12:/etc/nova/
root@192.168.56.12's password:
nova.conf
查看权限是否正确
[root@linux-node2 ~]# ll /etc/nova/nova.conf
-rw-r----- 1 root nova 290129 Dec 25 10:32 /etc/nova/nova.conf
修改配置文件
[root@linux-node2 ~]# vi /etc/nova/nova.conf
删除2行mysql的配置文件
connection=mysql+pymysql://nova:nova@192.168.56.11/nova_api
connection=mysql+pymysql://nova:nova@192.168.56.11/nova
全部的配置如下：
[root@linux-node2 nova]# grep -n '^[a-z]' nova.conf
2:transport_url=rabbit://openstack:openstack@192.168.56.11
15:auth_strategy=keystone
2063:use_neutron=True
3053:enabled_apis=osapi_compute,metadata
3267:firewall_driver = nova.virt.firewall.NoopFirewallDriver
4813:api_servers=http://192.168.56.11:9292
5430:auth_uri = http://192.168.56.11:5000 5431:auth_url = http://192.168.56.11:35357 5432:memcached_servers = 192.168.56.11:11211
5433:auth_type = password
5434:project_domain_name = default
5435:user_domain_name = default
5436:project_name = service
5437:username = nova
5438:password = nova
6470:url = http://192.168.56.11:9696 6471:auth_url = http://192.168.56.11:35357 6472:auth_type = password
6473:project_domain_name = default
6474:user_domain_name = default
6475:region_name = RegionOne
6476:project_name = service
6477:username = neutron
6478:password = neutron
6479:service_metadata_proxy = True
6480:metadata_proxy_shared_secret = oldboy
6716:lock_path=/var/lib/nova/tmp
6895:transport_url=rabbit://openstack:openstack@192.168.56.11
8372:enabled=true
8388:keymap=en-us
8395:vncserver_listen=0.0.0.0
8407:vncserver_proxyclient_address=192.168.56.12
8426:novncproxy_base_url=http://192.168.56.11:6080/vnc_auto.html

2.3 虚拟机支持查看

[root@linux-node2 nova]# egrep -c '(vmx|svm)' /proc/cpuinfo
2

如果不支持，则显示为0 ，可以修改配置文件

5672行  #virt_type=kvm

2.4 启动计算服务及其依赖，并将其配置为随系统自动启动

[root@linux-node2 nova]# systemctl enable libvirtd.service openstack-nova-compute.service
Created symlink from /etc/systemd/system/multi-user.target.wants/openstack-nova-compute.service to /usr/lib/systemd/system/openstack-nova-compute.service.
[root@linux-node2 nova]# systemctl start libvirtd.service openstack-nova-compute.service

2.5 检查启动状态

[root@linux-node2 nova]# ps aux|grep nova
nova      20997  2.3  7.0 1661660 130900 ?      Ssl  14:18   3:13 /usr/bin/python2 /usr/binnova-compute

在node1上检查状态

[root@linux-node1 ~]# . admin-openstack
[root@linux-node1 ~]# nova service-list
+----+------------------+-------------+----------+---------+-------+----------------------------+-----------------+
| Id | Binary           | Host        | Zone     | Status  | State | Updated_at                 | Disabled Reason |
+----+------------------+-------------+----------+---------+-------+----------------------------+-----------------+
| 3  | nova-consoleauth | linux-node1 | internal | enabled | up    | 2017-01-02T13:41:11.000000 | -               |
| 4  | nova-conductor   | linux-node1 | internal | enabled | up    | 2017-01-02T13:41:09.000000 | -               |
| 5  | nova-scheduler   | linux-node1 | internal | enabled | up    | 2017-01-02T13:41:09.000000 | -               |
| 6  | nova-compute     | linux-node2 | nova     | enabled | up    | 2017-01-02T13:41:11.000000 | -               |
+----+------------------+-------------+----------+---------+-------+----------------------------+-----------------+

[root@linux-node1 ~]# openstack compute service list
+----+------------------+-------------+----------+---------+-------+----------------------------+
| ID | Binary           | Host        | Zone     | Status  | State | Updated At                 |
+----+------------------+-------------+----------+---------+-------+----------------------------+
|  3 | nova-consoleauth | linux-node1 | internal | enabled | up    | 2017-01-02T13:42:11.000000 |
|  4 | nova-conductor   | linux-node1 | internal | enabled | up    | 2017-01-02T13:42:09.000000 |
|  5 | nova-scheduler   | linux-node1 | internal | enabled | up    | 2017-01-02T13:42:09.000000 |
|  6 | nova-compute     | linux-node2 | nova     | enabled | up    | 2017-01-02T13:42:11.000000 |
+----+------------------+-------------+----------+---------+-------+----------------------------+