KVM虚拟化与云计算Openstack-学习笔记

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linux相关
虚拟化
学习笔记

一。KVM虚拟化

1.KVM的安装：

yum install qemu-kvm qemu-kvm-tools virt-manager libvirt

/etc/init.d/libvirtd start

2.创建一个5G的大小的虚拟机：

qemu-img create -f raw /opt/centos-6.5-x86_64.raw 5G

3.查看虚拟机空间使用大小：

qemu-img info /opt/centos-6.5-x86_64.raw

4.启动虚拟机，并指定内存512，磁盘位置，和CDROM的位置，并启动VNC。

virt-install --virt-type kvm --name centos-6.6-64 --ram 512 --cdrom=/opt/centos-6.5.iso --disk path=/opt/centos-6.5-x86_64.raw --network network=default --graphics vnc,listen=0.0.0.0 --noautoconsole --os-type=linux --os-variant=rhel6

5.使用VNC访问虚拟机：

172.16.2.210 5900端口（第一台虚拟机默认是5900，第二台就是5901）

6.查看所有创建的虚拟机：

virsh list --all

7.启动虚拟机virsh start centos-6.6-64：

virsh start centos-6.6-64

7.1.直接进入虚拟机命令行：

virsh console centos-6.6-64

8.查看xml文件：

vim /etc/libvirt/qemu/centos-6.6-64.xml

virsh edit centos-6.6-64 （修改xml文件，不能直接用vim修改）

9.根据xml文件新建虚拟机：

virsh define /opt/centos-6.6-64.xml

10.虚拟机监控命令：virt-top

11.查看虚拟网桥状态：brctl show

12.创建桥接网卡并且关联到eth0上面：

brctl addbr br0

brctl addif br0 eth0 && ip del dev eth0 172.16.1.210/24 && ifconfig br0 172.16.1.210/24 up

（创建了桥接网卡以后需要把原来的eth0的IP去掉，把原来的IP配置在br0上面）

13。修改虚拟机的网卡为刚才创建的桥接网卡：

virsh edit centos-6.6-64 （修改虚拟机xml文件）

    <interface type='bridge'>
      <mac address='52:54:00:e4:46:c7'/>
      <source bridge='br0'/>
      <model type='virtio'/>

virsh destroy entos-6.6-64 (关闭在启动虚拟机生效) virsh start entos-6.6-64

二。OPENSTACK 云计算与虚拟化（I 版）

1.安装Openstack基础环境：

    wget https://dl.fedoraproject.org/pub/epel/epel-release-latest-6.noarch.rpm  (下载epel源)
    rpm -ivh epel-release-latest-6.noarch.rpm
    yum install -y python-pip gcc gcc-c++ make libtool patch automake python-devel libxslt-devel MySQL-python openssl-devel libudev-devel git wget libvirt-python libvirt qemu-kvm gedit python-numdisplay python-eventlet device-mapper bridge-utils libffi-devel libffi

2.安装mysql，并且在my.cnf里面加上配置。

default-storage-engine = innodb
innodb_file_per_table
collation-server = utf8_general_ci
init-connect = 'SET NAMES utf8'
character-set-server = utf8

3.给openstack创建Mysql相关库。

create database keystone;
grant all on keystone.* to keystone@'172.16.0.0/255.255.0.0' identified by 'keystone';（改权限和限制访问的Ip段）

create database glance;
grant all on glance.* to glance@'172.16.0.0/255.255.0.0' identified by 'glance';

create database nova;
 grant all on nova.* to nova@'172.16.0.0/255.255.0.0' identified by 'nova';

create database neutron;
grant all on neutron.* to neutron@'172.16.0.0/255.255.0.0' identified by 'neutron';

create database cinder;
grant all on cinder.* to cinder@'172.16.0.0/255.255.0.0' identified by 'cinder';

4.安装rabbitmq消息队列：

yum install rabbitmq-server

5.安装rabbitmq的web管理插件：

cd /usr/lib/rabbitmq/bin

./rabbitmq-plugins enable rabbitmq_management

/etc/init.d/rabbitmq-server restart

./rabbitmq-plugins list (检查插件是否正常安装)

http://172.16.1.210:15672 （通过这个网址访问，默认账号密码都是guest）

二。认证服务keystone相关(5000,35357)

6.配置openstack的官方安装源：

[openstack]
name=openstack
baseurl=http://repos.fedorapeople.org/repos/openstack/EOL/openstack-icehouse/epel-6
enabled=1
gpgcheck=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-6

7.安装openstack-keystone:

yum install openstack-keystone python-keystoneclient

8.创建PKI的目录给keystone使用：

keystone-manage pki_setup --keystone-user keystone --keystone-group keystone

chown -R keystone:keystone /etc/keystone/ssl

chmod -R o-rwx /etc/keystone/ssl (删掉其他用户的权限)

9.修改keystone的配置文件：

vim /etc/keystone/keystone.conf

admin_token=ADMIN
log_file=/var/log/keystone/keystone.log
connection=mysql://keystone:keystone@172.16.1.210/keystone

10.初始化keystone的数据库表结构：

keystone-manage db_sync （没有报错就是成功，最好在进mysql里面show tables看下）

rm /var/log/keystone/keystone.log (不操作会权限报错)

11.启动keystone:

/etc/init.d/openstack-keystone start

12.配置连接keystone连接需要的环境变量：

export OS_SERVICE_TOKEN=ADMIN

export OS_SERVICE_ENDPOINT=http://172.16.1.210:35357/v2.0

13.初始化话keystone的用户数据(admin,demo)：

创建admin,demo用户，创建admin角色，创建service,admin租户

 keystone user-create --name=admin --pass=admin --email=admin@example.com 
 keystone role-create --name=admin
 keystone tenant-create --name=admin --description="Admin Tenant"
 keystone user-role-add --user=admin --tenant=admin --role=admin
 keystone user-role-add --user=admin --role=_member_ --tenant=admin
 keystone user-create --name=demo --pass=demo
 keystone tenant-create --name=demo --description="demo Tenant"
 keystone user-role-add --user=demo --role=_member_ --tenant=demo
 keystone tenant-create --name=service
 keystone service-create --name=keystone --type=identity
 keystone endpoint-create --service-id=$(keystone service-list | awk '/ identity / {print $2}') --publicurl=http://172.16.1.210:5000/v2.0 --internalurl=http://172.16.1.210:5000/v2.0 --adminurl=http://172.16.1.210:35357/v2.0

创建完成后，使用keystone user-list 命令查看是否有admin和demo两个账号

14.查看admin的token

unset OS_SERVICE_TOKEN

unset OS_SERVICE_ENDPOINT

keystone --os-username=admin --os-password=admin --os-tenant-name=admin --os-auth-url=http://172.16.1.210:35357/v2.0 token-get

15.创建admin和demo用户的环境变量文件：

vim /root/keystone-admin

export OS_TENANT_NAME=admin
export OS_USERNAME=admin
export OS_PASSWORD=admin
export OS_AUTH_URL=http://172.16.1.210:35357/v2.0

vim /root/keystone-demo

export OS_TENANT_NAME=demo
export OS_USERNAME=demo
export OS_PASSWORD=demo
export OS_AUTH_URL=http://172.16.1.210:35357/v2.0

三。镜像服务Glance(9292，9191)

1.安装glance：

yum install openstack-glance python-glance python-glanceclient

2.配置glance:

vim /etc/glance/glance-api.conf

[DEFAULT]
debug=True
default_store=file
filesystem_store_datadir=/data/glance/images/
log_file=/var/log/glance/api.log
notifier_strategy = rabbit
rabbit_host=172.16.1.210
rabbit_port=5672
rabbit_use_ssl=false
rabbit_userid=guest
rabbit_password=guest
rabbit_virtual_host=/
rabbit_notification_exchange=glance
rabbit_notification_topic=notifications
rabbit_durable_queues=False
[database]
connection=mysql://glance:glance@172.16.1.210/glance
[keystone_authtoken]
auth_host=172.16.1.210
auth_port=35357
auth_protocol=http
admin_tenant_name=service
admin_user=glance
admin_password=glance
[paste_deploy]
flavor=keystone

vim /etc/glance/glance-registry.conf

debug=True
log_file=/var/log/glance/registry.log
connection=mysql://glance:glance@172.16.1.210/glance

[keystone_authtoken]
auth_host=172.16.1.210
auth_port=35357
auth_protocol=http
admin_tenant_name=service
admin_user=glance
admin_password=glance

[paste_deploy]
flavor=keystone

3.同步glance的mysql数据库：

glance-manage db_sync （警告报错可以忽略）

chown -R glance:glance /var/log/glance

4.在keystone中创建glance的用户：

keystone user-create --name=glance --pass=glance （创建glance密码也是一样）

keystone user-role-add --user=glance --tenant=service --role=admin （讲glance用户加入到admin角色service租户中）

5.将glance在keystone注册服务和注册url：

keystone service-create --name=glance --type=image 
keystone endpoint-create --service-id=$(keystone service-list|awk '/ image / {print $2}') --publicurl=http://172.16.1.210:9292 --internalurl=http://172.16.1.210:9292 --adminurl=http://172.16.1.210:9292

6.启动glance:

/etc/init.d/openstack-glance-api status

/etc/init.d/openstack-glance-registry start

7.查看镜像列表：

glance image-list

8.下载开发镜像并进行导入：

wget http://download.cirros-cloud.net/0.3.2/cirros-0.3.2-x86_64-disk.img
glance image-create --name "cirros-0.3.2-x86_64" --disk-format qcow2 --container-format bare --is-public True --file cirros-0.3.2-x86_64-disk.img

四。计算服务nova相关 (5000,35357)

1.安装控制节点的nova服务：

yum install openstack-nova-api openstack-nova-cert openstack-nova-conductor openstack-nova-console openstack-nova-novncproxy openstack-nova-scheduler python-novaclient

pip install websockify==0.5.1 (解决novnc启动不了的问题)

2.修改nova的配置文件：

vim /etc/nova/nova.conf

rabbit_host=172.16.1.210
rabbit_port=5672
rabbit_use_ssl=false
rabbit_userid=guest
rabbit_password=guest
rpc_backend=rabbit
my_ip=172.16.1.210
auth_strategy=keystone

network_api_class=nova.network.neutronv2.api.API
linuxnet_interface_driver=nova.network.linux_net.LinuxBridgeInterfaceDriver
neutron_url=http://172.16.1.210:9696
neutron_admin_username=neutron
neutron_admin_password=neutron
neutron_admin_tenant_id=96616014997f4f79b7dbd9e319912154  ("keystone tenant-list"命令看到的                                                           service_id) 
neutron_admin_tenant_name=service
neutron_admin_auth_url=http://172.16.1.210:5000/v2.0
neutron_auth_strategy=keystone
firewall_driver=nova.virt.firewall.NoopFirewallDriver

novncproxy_base_url=http://172.16.1.210:6080/vnc_auto.html
vncserver_listen=0.0.0.0
vncserver_proxyclient_address=172.16.1.210
vnc_enabled=true
vnc_keymap=en-us
connection=mysql://nova:nova@172.16.1.210/nova
auth_host=172.16.1.210
auth_port=35357
auth_protocol=http
auth_uri=http://172.16.1.210:5000
auth_version=v2.0
admin_user=nova
admin_password=nova
admin_tenant_name=service
vif_driver=nova.virt.libvirt.vif.NeutronLinuxBridgeVIFDriver

3.初始化nova的数据库表结构：

nova-manage db sync

4在keystone中创建nova的用户：

source /root/keystone-admin

keystone user-create --name=nova --pass=nova

keystone user-role-add --user=nova --tenant=service --role=admin

5.将nova在keystone注册服务和注册url：

source /root/keystone-admin   (根据自己存放变量的文件)
keystone service-create --name=nova --type=compute
keystone endpoint-create --service-id=$(keystone service-list|awk '/ compute / {print $2}') --publicurl=http://172.16.1.210:8774/v2/%\(tenant_id\)s --internalurl=http://172.16.1.210:8774/v2/%\(tenant_id\)s --adminurl=http://172.16.1.210:8774/v2/%\(tenant_id\)s

6.启动nova所有相关服务：

for i in {api,cert,conductor,consoleauth,novncproxy,scheduler};do service openstack-nova-$i start; done

7.在计算节点上面安装相关服务：

yum install -y qemu-kvm libvirt openstack-nova-compute python-novaclient

yum upgrade device-mapper-libs

8.将控制节点nova配置文件复制到计算节点：

scp /etc/nova/nova.conf 172.16.1.211:/etc/nova/nova.conf

修改vncserver_proxyclient_address=172.16.1.211 配置的IP为计算节点的。

9.启动计算节点的相关服务：

/etc/init.d/libvirtd start

/etc/init.d/messagebus start

/etc/init.d/openstack-nova-compute start

10.在控制节点上面查看是否注册上来：

nova host-list

六。网络服务neutron相关 (9696)

1.在控制节点安装neutron服务：

yum install openstack-neutron openstack-neutron-ml2 python-neutronclient openstack-neutron-linuxbridge

2.修改neutron配置文件：

vim /etc/neutron/neutron.conf

state_path = /var/lib/neutron
lock_path = $state_path/lock
core_plugin = ml2
service_plugins = router,firewall,lbaas
api_paste_config = /usr/share/neutron/api-paste.ini
auth_strategy = keystone
rabbit_host = 172.16.1.210
rabbit_password = guest
rabbit_port = 5672
rabbit_userid = guest
rabbit_virtual_host = /
notify_nova_on_port_status_changes = true
notify_nova_on_port_data_changes = true
nova_url = http://172.16.1.210:8774/v2
nova_admin_username = nova
nova_admin_tenant_id = 96616014997f4f79b7dbd9e319912154   ("keystone tenant-list"命令看到的                                                           service_id)
nova_admin_password = nova
nova_admin_auth_url = http://172.16.1.210:35357/v2.0
root_helper = sudo neutron-rootwrap /etc/neutron/rootwrap.conf
auth_host = 172.16.1.210
auth_port = 35357
auth_protocol = http
admin_tenant_name = service
admin_user = neutron
admin_password = neutron
connection = mysql://neutron:neutron@172.16.1.210:3306/neutron
service_provider=LOADBALANCER:Haproxy:neutron.services.loadbalancer.drivers.haproxy.plugin_driver.HaproxyOnHostPluginDriver:default
service_provider=VPN:openswan:neutron.services.vpn.service_drivers.ipsec.IPsecVPNDriver:default

vim /etc/neutron/plugins/ml2/ml2_conf.ini (下面是单一扁平网络的配置)

type_drivers = flat,vlan,gre,vxlan
tenant_network_types = flat,vlan,gre,vxlan
mechanism_drivers = linuxbridge,openvswitch
flat_networks = physnet1
enable_security_group = True

vim /etc/neutron/plugins/linuxbridge/linuxbridge_conf.ini (下面是单一扁平网络的配置)

network_vlan_ranges = physnet1
physical_interface_mappings = physnet1:eth0  （根据网卡来配置）
firewall_driver = neutron.agent.linux.iptables_firewall.IptablesFirewallDriver
enable_security_group = True

3.在keystone中创建neutron的用户：

keystone user-create --name neutron --pass neutron
keystone user-role-add --user neutron --tenant service --role admin

4.这里需要改下nova的neutron相关配置（我前面已经整合进去了）

5.将neutron在keystone注册服务和注册url:

keystone service-create --name neutron --type network
keystone endpoint-create --service-id=$(keystone service-list |awk '/ network / {print $2}') --publicurl=http://172.16.1.210:9696 --internalurl=http://172.16.1.210:9696 --adminurl=http://172.16.1.210:9696

6.先使用手动启动看是否有报错（启动成功会监听9696端口）：

neutron-server --config-file=/etc/neutron/neutron.conf --config-file=/etc/neutron/pluns/ml2/ml2_conf.ini  --config-file=/etc/neutron/plugins/linuxbridge/linuxbridge_conf.ini

7.修改neutron服务的init启动脚本：

vim /etc/init.d/neutron-server

vim /etc/init.d/neutron-linuxbridge-agent （两个文件修改相同的地方）

configs=(
    "/etc/neutron/neutron.conf" \
    "/etc/neutron/plugins/linuxbridge/linuxbridge_conf.ini" \
    "/etc/neutron/plugins/ml2/ml2_conf.ini" \
)

8.启动neutron服务：

/etc/init.d/neutron-server status

/etc/init.d/neutron-linuxbridge-agent start

9.查看neutron的连接情况：

neutron agent-list

10.在计算节点安装neutron服务：

yum install openstack-neutron openstack-neutron-ml2 python-neutronclient openstack-neutron-linuxbridge

11.将控制节点的配置文件复制到计算节点上：

scp /etc/init.d/neutron-* 172.16.1.211:/etc/init.d/
scp /etc/neutron/neutron.conf 172.16.1.211:/etc/neutron/neutron.conf
scp /etc/neutron/plugins/ml2/ml2_conf.ini 172.16.1.211:/etc/neutron/plugins/ml2/ml2_conf.ini
scp /etc/neutron/plugins/linuxbridge/linuxbridge_conf.ini 172.16.1.211:/etc/neutron/plugins/linuxbridge/linuxbridge_conf.ini

12.在计算节点上启动neutron的客户端程序：

/etc/init.d/neutron-linuxbridge-agent start

七。web服务dashboard相关 (80)

1.安装dashboard服务：

yum install httpd mod_wsgi memcached python-memcached openstack-dashboard

2.修改dashboard的配置文件：

vim /etc/openstack-dashboard/local_settings （修改下面两项）

ALLOWED_HOSTS = ['horizon.example.com', 'localhost','172.16.1.210']   (允许的地址)
CACHES = {
   'default': {
       'BACKEND' : 'django.core.cache.backends.memcached.MemcachedCache',
       'LOCATION' : '127.0.0.1:11211',
   }
}

OPENSTACK_HOST = "172.16.1.210"

3.启动dashboard服务：

/etc/init.d/memcached start

/etc/init.d/httpd start

4.登录dashboard：

http://172.16.1.210/dashboard/

默认账户密码：admin/admin

八。调试Openstack

1.为demo创建一个单一扁平网络：

neutron net-create --tenant-id 9d18b0a337064af386cc0d599dd172fd flat_net --shared --provider:network_type flat --provider:physical_network physnet1

id为keystone tenant-list 查看的demo_id, flat_net是创建网络的名称，--shared代表共享网络，后面是网络的类型，最后是对应neutron网络名称.

2.查看创建的网络：

neutron net-list

3.在网页上面创建子网：

管理员-网络-点击网络-创建子网-扁平网络网段就用和eth0一样的就可以

4.虚拟机创建流程图：

5.安装备注：

1.如果安装完成以后虚拟机无法ping同外网，请检查网卡是否打开“混杂模式”

2.强行修改虚拟机的状态为“运行”

nova reset-state 6986b3f8-be2c-4931-b3b9-90d8077210b6 --active

3.启动“主机集合”功能需要修改配置文件：

/etc/nova/nova.conf

scheduler_default_filters=AvailabilityZoneFilter,RetryFilter,RamFilter,ComputeFilter,ComputeCapabilitiesFilter,ImagePropertiesFilter,CoreFilter

4.将db4加入到gigold-2的主机集合里面：

nova aggregate-add-host gigold-2 db4

nova aggregate-remove-host gigold-2 db4 （这个是删除）

5.关闭默认的virbr0虚拟网卡

virsh net-destroy default  
virsh net-undefine default 
service libvirtd restart

查看图片附件

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OpenStack 无法连接到Neutron 问题解决 | VMWare虚拟机转换成KVM

2016-07-20 00:07
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