Openstack搭建相关问题

1.Openstack添加新磁盘到根分区

初始化分区sdb为物理卷pv

pvcreate /dev/sdb  //初始化

pvdisplay  //显示物理卷信息

vgextend centos /dev/sdb

vgdisplay

lvextend -L +204800 /dev/mapper/centos-root

xfs_growfs /dev/centos/root||resize2fs /dev/mapper/centos-root(两者选其一)

2.MTU相关问题

ifconfig etho mtu 1450

route:SIOCADDRT: No process

3.查看虚拟机UUID号码

nmcli con

NAME            UUID                                  TYPE            DEVICE        
vxlan-2         7439bb9a-5762-46cc-b79a-605c4cb0de65  generic         vxlan-2       
brqb3b244e3-a3  50b2de5f-9934-4ea6-b807-a98d081b95fc  bridge          brqb3b244e3-a3
virbr0-nic      1f080b75-286b-48ab-bfd5-b33e38b463a1  generic         virbr0-nic    
virbr0          0379b17d-58b6-4fa0-8280-7eb43140a94d  bridge          virbr0        
eno33557248     e2217f22-675a-a4b8-1766-37ed3ea0b697  802-3-ethernet  eno33557248   
eno16777984     5d62d92d-6541-4a06-af5a-53648f3b2b08  802-3-ethernet  eno16777984   
tap53d330d0-b9  9971fa5b-2757-4e0c-8e28-1cc3b7d18f12  802-3-ethernet  tap53d330d0-b9

 4.CentOS7删除virbr0虚拟网卡

出现虚拟网卡是因为安装时启用了 libvirtd 服务后生成的

关闭方法

virsh net-list

名称               状态     自动开始  持久
---------------------------------------------------------

default              active    yes

virsh net-destroy default

virsh net-undefine default

systemctl restart libvirtd.service

5.CentOS7虚拟网桥的位置

/sys/devices/virtual/net/

http://blog.csdn.net/skykingf/article/details/48521051

https://www.certdepot.net/rhel7-configure-ipv4-addresses/

http://www.cnblogs.com/tdcqma/p/5971061.html

http://www.tuicool.com/articles/uYNzMnN ###flat、vxlan、vlan、gre、local网络分类

http://www.itnpc.com/news/web/1473647321114738.html ###centos7中team组的实现

nmcli connection modify eno33557248 ipv4.addresses 192.168.3.210/24 && nmcli connection modify eno33557248 ipv4.method manual && nmcli connection up  eno33557248
neutron net-create --shared --provider:physical_network provider   --provider:network_type flat provider
neutron subnet-create --name provider   --allocation-pool start=192.168.3.200,end=192.168.3.224   --dns-nameserver 202.106.0.20 --gateway 192.168.3.1    provider 192.168.3.0/24
neutron net-create selfservice
neutron subnet-create --name selfservice   --dns-nameserver 202.106.0.20 --gateway 192.168.111.1  selfservice 192.168.111.0/24
neutron net-update provider --router:external
neutron router-create router
neutron router-interface-add router selfservice
neutron router-gateway-set router provider sucessed.
ip netns
neutron router-port-list router
systemctl enable libvirtd.service openstack-nova-compute.service &&  systemctl start libvirtd.service openstack-nova-compute.service
systemctl restart neutron-dhcp-agent  neutron-l3-agent  neutron-linuxbridge-agent  neutron-metadata-agent neutron-server