OpenStack 运维 - 部署Neutron组件[T版]
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OpenStack 运维 - 部署Neutron组件
一、Neutron 概述
Neutron是 OpenStack项目中负责提供网络服务的组件，它基于软件定义网络的思想，实现了网络虚拟化下的资源管理。Neutron 的设计目标是实现“网络即服务(Networking as a Service)，在设计上遵循了基于 SDN 实现网络虚拟化的原则，在实现上充分利用了 Linux 系统上的各种网络相关的技术
二、创建数据库neutron，并进行授权
CT控制节点
mysql -u root -p
grant all privileges on neutron.* to 'neutron'@'localhost' identified by 'NEUTRON_DBPASS';
grant all privileges on neutron.* to 'neutron'@'%' identified by 'NE
UTRON_DBPASS';
flush privileges;
exit
创建neutron用户，用于在keystone做认证
openstack user create --domain default --password NEUTRON_PASS neutron
将neutron用户添加到service项目中拥有管理员权限
openstack role add --project service --user neutron admin
创建network服务，服务类型为network
openstack service create --name neutron --description "OpenStack Networking" network
注册API到neutron服务，给neutron服务关联端口，即添加endpoint
openstack endpoint create --region RegionOne network public http://ct:9696
openstack endpoint create --region RegionOne network internal http://ct:9696
openstack endpoint create --region RegionOne network admin http://ct:9696
安装提供者网络(桥接)
ebtables包是用来管理iptables规则的
yum -y install openstack-neutron openstack-neutron-ml2 openstack-neutron-linuxbridge ebtables conntrack-tools
更改主配置文件
#修改主配置文件neutron.conf
cp -a /etc/neutron/neutron.conf{,.bak}
grep -Ev '^$|#' /etc/neutron/neutron.conf.bak > /etc/neutron/neutron.conf
openstack-config --set /etc/neutron/neutron.conf database connection mysql+pymysql://neutron:NEUTRON_DBPASS@ct/neutron
openstack-config --set /etc/neutron/neutron.conf DEFAULT core_plugin ml2
openstack-config --set /etc/neutron/neutron.conf DEFAULT service_plugins router
openstack-config --set /etc/neutron/neutron.conf DEFAULT allow_overlapping_ips true
openstack-config --set /etc/neutron/neutron.conf DEFAULT transport_url rabbit://openstack:RABBIT_PASS@ct
openstack-config --set /etc/neutron/neutron.conf DEFAULT auth_strategy keystone
openstack-config --set /etc/neutron/neutron.conf DEFAULT notify_nova_on_port_status_changes true
openstack-config --set /etc/neutron/neutron.conf DEFAULT notify_nova_on_port_data_changes true
openstack-config --set /etc/neutron/neutron.conf keystone_authtoken www_authenticate_uri http://ct:5000
openstack-config --set /etc/neutron/neutron.conf keystone_authtoken auth_url http://ct:5000
openstack-config --set /etc/neutron/neutron.conf keystone_authtoken memcached_servers ct:11211
openstack-config --set /etc/neutron/neutron.conf keystone_authtoken auth_type password
openstack-config --set /etc/neutron/neutron.conf keystone_authtoken project_domain_name default
openstack-config --set /etc/neutron/neutron.conf keystone_authtoken user_domain_name default
openstack-config --set /etc/neutron/neutron.conf keystone_authtoken project_name service
openstack-config --set /etc/neutron/neutron.conf keystone_authtoken username neutron
openstack-config --set /etc/neutron/neutron.conf keystone_authtoken password NEUTRON_PASS
openstack-config --set /etc/neutron/neutron.conf oslo_concurrency lock_path /var/lib/neutron/tmp
openstack-config --set /etc/neutron/neutron.conf nova auth_url http://ct:5000
openstack-config --set /etc/neutron/neutron.conf nova auth_type password
openstack-config --set /etc/neutron/neutron.conf nova project_domain_name default
openstack-config --set /etc/neutron/neutron.conf nova user_domain_name default
openstack-config --set /etc/neutron/neutron.conf nova region_name RegionOne
openstack-config --set /etc/neutron/neutron.conf nova project_name service
openstack-config --set /etc/neutron/neutron.conf nova username nova
openstack-config --set /etc/neutron/neutron.conf nova password NOVA_PASS
查看配置文件
[root@ct neutron]# cat neutron.conf
[DEFAULT]
core_plugin = ml2 #启用二层网络插件
service_plugins = router #启用三层网络插件
allow_overlapping_ips = true
transport_url = rabbit://openstack:RABBIT_PASS@ct #配置rabbitmq连接
auth_strategy = keystone #认证的方式:keystone
notify_nova_on_port_status_changes = true #当网络接口发生变化时，通知给计算节点
notify_nova_on_port_data_changes = true #当端口数据发生变化，通知计算节点
[cors]
[database] #配置数据库连接
connection = mysql+pymysql://neutron:NEUTRON_DBPASS@ct/neutron
[keystone_authtoken] #配置keystone认证信息
www_authenticate_uri = http://ct:5000
auth_url = http://ct:5000
memcached_servers = ct:11211
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = neutron
password = NEUTRON_PASS
[oslo_concurrency] #配置锁路径
lock_path = /var/lib/neutron/tmp
[oslo_messaging_amqp]
[oslo_messaging_kafka]
[oslo_messaging_notifications]
[oslo_messaging_rabbit]
[oslo_middleware]
[oslo_policy]
[privsep]
[ssl]
[nova] #neutron需要给nova返回数据
auth_url = http://ct:5000 #到keystone认证nova
auth_type = password
project_domain_name = default
user_domain_name = default
region_name = RegionOne
project_name = service
username = nova #通过nova的用户名和密码到keystone验证nova的token
password = NOVA_PASS
修改 ML2 plugin 配置文件 ml2_conf.ini
cp -a /etc/neutron/plugins/ml2/ml2_conf.ini{,.bak}
grep -Ev '^$|#' /etc/neutron/plugins/ml2/ml2_conf.ini.bak > /etc/neutron/plugins/ml2/ml2_conf.ini
openstack-config --set /etc/neutron/plugins/ml2/ml2_conf.ini ml2 type_drivers flat,vlan,vxlan
openstack-config --set /etc/neutron/plugins/ml2/ml2_conf.ini ml2 tenant_network_types vxlan
openstack-config --set /etc/neutron/plugins/ml2/ml2_conf.ini ml2 mechanism_drivers linuxbridge,l2population
openstack-config --set /etc/neutron/plugins/ml2/ml2_conf.ini ml2 extension_drivers port_security
openstack-config --set /etc/neutron/plugins/ml2/ml2_conf.ini ml2_type_flat flat_networks provider
openstack-config --set /etc/neutron/plugins/ml2/ml2_conf.ini ml2_type_vxlan vni_ranges 1:1000
openstack-config --set /etc/neutron/plugins/ml2/ml2_conf.ini securitygroup enable_ipset true
修改 linux bridge network provider 配置文件
#Linux网桥
cp -a /etc/neutron/plugins/ml2/linuxbridge_agent.ini{,.bak}
grep -Ev '^$|#' /etc/neutron/plugins/ml2/linuxbridge_agent.ini.bak > /etc/neutron/plugins/ml2/linuxbridge_agent.ini
openstack-config --set /etc/neutron/plugins/ml2/linuxbridge_agent.ini linux_bridge physical_interface_mappings provider:eth1 ###eth1网卡名称
openstack-config --set /etc/neutron/plugins/ml2/linuxbridge_agent.ini vxlan enable_vxlan true
openstack-config --set /etc/neutron/plugins/ml2/linuxbridge_agent.ini vxlan local_ip 192.168.1.100 ##控制节点IP地址
openstack-config --set /etc/neutron/plugins/ml2/linuxbridge_agent.ini vxlan l2_population true
openstack-config --set /etc/neutron/plugins/ml2/linuxbridge_agent.ini securitygroup enable_security_group true
openstack-config --set /etc/neutron/plugins/ml2/linuxbridge_agent.ini securitygroup firewall_driver neutron.agent.linux.iptables_firewall.IptablesFirewallDriver
#查看配置文件
[DEFAULT]
[linux_bridge]
physical_interface_mappings = provider:eth1 #指定上个文件中的桥接网络名称，与eth0物理网卡做关联，后期给虚拟机分配external网络，就可以通过eth0上外网；物理网卡有可能是bind0、br0等
[vxlan] #启用VXLAN覆盖网络，配置覆盖网络的物理网络接口的IP地址，启用layer－2 population
enable_vxlan = true #允许用户创建自定义网络(3层网络)
local_ip = 192.168.1.100
l2_population = true
[securitygroup] #启用安全组并配置 Linux 桥接 iptables 防火墙驱动
enable_security_group = true
firewall_driver = neutron.agent.linux.iptables_firewall.IptablesFirewallDriver
修改内核参数
echo 'net.bridge.bridge-nf-call-iptables=1' >> /etc/sysctl.conf
echo 'net.bridge.bridge-nf-call-ip6tables=1' >> /etc/sysctl.conf
modprobe br_netfilter #表示向内核加入参数
sysctl -p
配置Linuxbridge接口驱动和外部网络网桥
cp -a /etc/neutron/l3_agent.ini{,.bak}
grep -Ev '^$|#' /etc/neutron/l3_agent.ini.bak > /etc/neutron/l3_agent.ini
openstack-config --set /etc/neutron/l3_agent.ini DEFAULT interface_driver linuxbridge
修改dhcp_agent 配置文件
cp -a /etc/neutron/dhcp_agent.ini{,.bak}
grep -Ev '^$|#' /etc/neutron/dhcp_agent.ini.bak > /etc/neutron/dhcp_agent.ini
openstack-config --set /etc/neutron/dhcp_agent.ini DEFAULT interface_driver linuxbridge
openstack-config --set /etc/neutron/dhcp_agent.ini DEFAULT dhcp_driver neutron.agent.linux.dhcp.Dnsmasq
openstack-config --set /etc/neutron/dhcp_agent.ini DEFAULT enable_isolated_metadata true
配置元数据代理、用于配置桥接与自服务网络的通用配置
cp -a /etc/neutron/metadata_agent.ini{,.bak}
grep -Ev '^$|#' /etc/neutron/metadata_agent.ini.bak > /etc/neutron/metadata_agent.ini
openstack-config --set /etc/neutron/metadata_agent.ini DEFAULT nova_metadata_host ct
openstack-config --set /etc/neutron/metadata_agent.ini DEFAULT metadata_proxy_shared_secret METADATA_SECRET
修改nova配置文件
openstack-config --set /etc/nova/nova.conf neutron url http://ct:9696
openstack-config --set /etc/nova/nova.conf neutron auth_url http://ct:5000
openstack-config --set /etc/nova/nova.conf neutron auth_type password
openstack-config --set /etc/nova/nova.conf neutron project_domain_name default
openstack-config --set /etc/nova/nova.conf neutron user_domain_name default
openstack-config --set /etc/nova/nova.conf neutron region_name RegionOne
openstack-config --set /etc/nova/nova.conf neutron project_name service
openstack-config --set /etc/nova/nova.conf neutron username neutron
openstack-config --set /etc/nova/nova.conf neutron password NEUTRON_PASS
openstack-config --set /etc/nova/nova.conf neutron service_metadata_proxy true
openstack-config --set /etc/nova/nova.conf neutron metadata_proxy_shared_secret METADATA_SECRET
创建ML2插件文件符号连接
网络服务初始化脚本需要/etc/neutron/plugin.ini指向ML2插件配置文件的符号链接
ln -s /etc/neutron/plugins/ml2/ml2_conf.ini
初始化数据库
su -s /bin/sh -c "neutron-db-manage --config-file /etc/neutron/neutron.conf \\
--config-file /etc/neutron/plugins/ml2/ml2_conf.ini upgrade head" neutron
重启计算节点nova-api服务
systemctl restart openstack-nova-api.service
systemctl enable neutron-server.service \\
neutron-linuxbridge-agent.service neutron-dhcp-agent.service \\
neutron-metadata-agent.service
systemctl start neutron-server.service \\
neutron-linuxbridge-agent.service neutron-dhcp-agent.service \\
neutron-metadata-agent.service
netstat -anutp |grep 9696
systemctl enable neutron-l3-agent.service && systemctl restart neutron-l3-agent.service
'//因为配置了第三层L3网络服务、所以需要启动第三层服务'
systemctl status neutron-l3-agent.service
三、计算节点 C1/C2
yum -y install openstack-neutron-linuxbridge ebtables ipset conntrack-tools
修改neutron.conf文件
cp -a /etc/neutron/neutron.conf{,.bak}
grep -Ev '^$|#' /etc/neutron/neutron.conf.bak > /etc/neutron/neutron.conf
openstack-config --set /etc/neutron/neutron.conf DEFAULT transport_url rabbit://openstack:RABBIT_PASS@ct
openstack-config --set /etc/neutron/neutron.conf DEFAULT auth_strategy keystone
openstack-config --set /etc/neutron/neutron.conf keystone_authtoken www_authenticate_uri http://ct:5000
openstack-config --set /etc/neutron/neutron.conf keystone_authtoken auth_url http://ct:5000
openstack-config --set /etc/neutron/neutron.conf keystone_authtoken memcached_servers ct:11211
openstack-config --set /etc/neutron/neutron.conf keystone_authtoken auth_type password
openstack-config --set /etc/neutron/neutron.conf keystone_authtoken project_domain_name default
openstack-config --set /etc/neutron/neutron.conf keystone_authtoken user_domain_name default
openstack-config --set /etc/neutron/neutron.conf keystone_authtoken project_name service
openstack-config --set /etc/neutron/neutron.conf keystone_authtoken username neutron
openstack-config --set /etc/neutron/neutron.conf keystone_authtoken password NEUTRON_PASS
openstack-config --set /etc/neutron/neutron.conf oslo_concurrency lock_path /var/lib/neutron/tmp
【查看配置文件】
[root@c1 neutron]# cat neutron.conf
[DEFAULT] #neutron的server端与agent端通讯也是通过rabbitmq进行通讯的
transport_url = rabbit://openstack:RABBIT_PASS@ct
auth_strategy = keystone #认证策略：keystone
[cors]
[database]
[keystone_authtoken] #指定keystone认证的信息
www_authenticate_uri = http://ct:5000
auth_url = http://ct:5000
memcached_servers = ct:11211
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = neutron
password = NEUTRON_PASS
[oslo_concurrency] #配置锁路径（管理线程库）
lock_path = /var/lib/neutron/tmp
[oslo_messaging_amqp]
[oslo_messaging_kafka]
[oslo_messaging_notifications]
[oslo_messaging_rabbit]
[oslo_middleware]
[oslo_policy]
[privsep]
[ssl]
配置Linux网桥代理
cp -a /etc/neutron/plugins/ml2/linuxbridge_agent.ini{,.bak}
grep -Ev '^$|#' /etc/neutron/plugins/ml2/linuxbridge_agent.ini.bak > /etc/neutron/plugins/ml2/linuxbridge_agent.ini
openstack-config --set /etc/neutron/plugins/ml2/linuxbridge_agent.ini linux_bridge physical_interface_mappings provider:eth1
openstack-config --set /etc/neutron/plugins/ml2/linuxbridge_agent.ini vxlan enable_vxlan true
openstack-config --set /etc/neutron/plugins/ml2/linuxbridge_agent.ini vxlan local_ip 192.168.1.200
openstack-config --set /etc/neutron/plugins/ml2/linuxbridge_agent.ini vxlan l2_population true
openstack-config --set /etc/neutron/plugins/ml2/linuxbridge_agent.ini securitygroup enable_security_group true
openstack-config --set /etc/neutron/plugins/ml2/linuxbridge_agent.ini securitygroup firewall_driver neutron.agent.linux.iptables_firewall.IptablesFirewallDriver
[root@c1 ml2]# cat linuxbridge_agent.ini
[DEFAULT]
[linux_bridge]
physical_interface_mappings = provider:eth1
● 直接将node节点external网络绑定在当前节点的指定的物理网卡，不需要node节点配置网络名称，node节点只需要接收controller节点指令即可；controller节点上配置的external网络名称是针对整个openstack环境生效的，所以指定external网络绑定在当前node节点的eth0物理网卡上(也可能是bind0或br0)
[vxlan]
enable_vxlan = true #开启Vxlan网络
local_ip = 192.168.1.200
l2_population = true #L2 Population 是用来提高 VXLAN 网络扩展能力的组件
[securitygroup]
enable_security_group = true #开启安全组
firewall_driver = neutron.agent.linux.iptables_firewall.IptablesFirewallDriver #指定安全组驱动文件
echo 'net.bridge.bridge-nf-call-iptables=1' >> /etc/sysctl.conf
echo 'net.bridge.bridge-nf-call-ip6tables=1' >> /etc/sysctl.conf
'//允许虚拟机的数据通过物理机出去'
modprobe br_netfilter
'//用于向内核中加载模块或者从内核中移除模块'
'//modprobe -r 表示移除'
sysctl -p
【修改nova.conf配置文件的neutron字段-C1、C2节点】
openstack-config --set /etc/nova/nova.conf neutron auth_url http://ct:5000
openstack-config --set /etc/nova/nova.conf neutron auth_type password
openstack-config --set /etc/nova/nova.conf neutron project_domain_name default
openstack-config --set /etc/nova/nova.conf neutron user_domain_name default
openstack-config --set /etc/nova/nova.conf neutron region_name RegionOne
openstack-config --set /etc/nova/nova.conf neutron project_name service
openstack-config --set /etc/nova/nova.conf neutron username neutron
openstack-config --set /etc/nova/nova.conf neutron password NEUTRON_PASS
#以下为修改字段内容
[neutron]
auth_url = http://ct:5000
auth_type = password
project_domain_name = default
user_domain_name = default
region_name = RegionOne
project_name = service
username = neutron
password = NEUTRON_PASS
重新启动计算节点上的Nova服
systemctl restart openstack-nova-compute.service
启动网桥代理并设置开机自启
systemctl enable neutron-linuxbridge-agent.service
systemctl start neutron-linuxbridge-agent.service
四、CT 验证服务组件
openstack extension list --network
'//列出加载的扩展来验证neutron-server是否成功运行'
openstack network agent list
'//在控制节点上，列出所有的代理'
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