Shulou(Shulou.com)06/03 Report--

Many novices are often troubled by complex deployment steps when they get started with OpenStack. How to quickly have an openstack experimental environment? I choose packstack. Although it is a tool from ancient times, I have to say, it is really fragrant ~~~

1. Experimental environment

Note: The environment is built by VMware virtual machines. ENS33 is in nat mode, ENS34 is in host-only mode. In this experiment, network segment 212 is used as management ip, and network segment 211 is public network (pretend) ip, which is used to access the external network.

2. Configure yum source.

Get used to using domestic sources (Ali) because it's faster

http://mirrors.aliyun.com/repo/ for you to choose

First install wget.

yum -y install wget

Delete/etc/yum.repos.d/* Experimental environment is convenient to delete, production environment recommended backup

Download domestic centos yum source

wget http://mirrors.aliyun.com/repo/Centos-7.repo

This installation openstack rocky version

Aliyun Open Source Mirror Station

https://mirrors.aliyun.com/centos/7/cloud/x86_64/

Choose the version you want.

create and edit

/etc/yum.repos.d/openstack-rocky.repo

[openstack]

name=openstack

baseurl=https://mirrors.aliyun.com/centos/7/cloud/x86_64/openstack-rocky/

gpgcheck=0

failovermethod=priority ###(order yum chooses when multiple urls are available, see http://www.t086.com/article/5015 for details)

enabled=1

Because the error qemu version is too low during installation, you need to configure the qemu source.

https://mirrors.aliyun.com/centos/7/virt/x86_64/kvm-common/

create and edit

/etc/yum.repos.d/CentOS-qemu.repo

[centos-qemu-ev]

name=qemu

baseurl=https://mirrors.aliyun.com/centos/7/virt/x86_64/kvm-common/

gpgcheck=0

enabled=1

Clear the yum source cache and regenerate the local cache after completion. If there is an error for the first time, you can execute it again.

yum clean all && yum makecache

Node1 can also be configured to the same source.

3. Configure firewalld, selinux (all nodes)

If it is a big shot, you can configure firewalld and selinux rules in detail, otherwise it will be closed.

firewalld：systemctl stop firewalld && systemctl disable firewalld

selinux: setenforce 0 (temporarily effective) or sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/selinux/config, restart the machine

4. Configure the hosts file and configure clock synchronization (strong synchronization, simple, not recommended for production environments)

hosts file, writes to all/etc/hosts files

192.168.211.60 packstack

192.168.211.61 node1

Clock synchronization service (this synchronization method is only synchronization between nodes, not synchronization with the Internet, only applicable to experimental environments)

packstack node, install ntp service

yum -y install ntp

Edit/etc/ntp.conf

commented out

#server 0.centos.pool.ntp.org iburst

#server 1.centos.pool.ntp.org iburst

#server 2.centos.pool.ntp.org iburst

#server 3.centos.pool.ntp.org iburst

added

server 127.127.1.0

fudge 127.127.1.0 stratum 10

Start the ntp service and boot it up automatically

systemctl start ntpd && systemctl enable ntpd

Node1 Install ntpdate

ntpdate packstack

5. Install packstack and configure the response file (starting from step 5, only configure in packstack)

At this time, doing a snapshot or something is simply delicious.

yum -y install openstack-packstack

Generate response file

packstack --gen-answer-file=filename The file name can start anywhere

After executing this command, you will be prompted to change your ssh public key. We only need to copy the public key to node1 to achieve secret-free login.

ssh-copy-id node1

Configure packstack response file

Remove all features that do not need to be installed

CONFIG_MANILA_INSTALL=n

CONFIG_SWIFT_INSTALL=n

CONFIG_AODH_INSTALL=n

planning node

CONFIG_CONTROLLER_HOST=192.168.212.60

CONFIG_COMPUTE_HOSTS=192.168.212.61

CONFIG_NETWORK_HOSTS=192.168.212.60

Change all passwords

Using tools to install, the password is randomly generated experimental environment is inconvenient, so we change the password to 000000

sed -i.bak -r 's/(.+_ PW)=[0-9a-z]+/\1=000000/g' deploy.conf

6. Start deployment

packstack --answer-file=deploy.conf

At this point, you can have a cup of tea or a meal. After you finish, you can see the openstack installed.

Once you're done, open the dashboard in your browser at http://192.168.212.60

7. Configure the network

Create br-ex bridge configuration

Create and edit/etc/sysconfig/network-scripts/ifcfg-br-ex

DEVICE=br-ex

ONBOOT=yes

DEVICETYPE=ovs

TYPE=OVSBridge

BOOTPROTO=static

IPADDR=192.168.211.60

NETMASK=255.255.255.0

GATEWAY=192.168.211.1

Bridge ENS33 NIC to BR-EX

Modify/etc/sysconfig/network-scripts/ifcfg-ens33

DEVICE=ens33

ONBOOT=yes

DEVICETYPE=ovs

TYPE=OVSPort

BOOTPROTO=yes

OVS_BRIDGE=br-ex

After the bridge is completed, check the network card information and you will find that ens33 has no ip address, and the ip has been transferred to the br-ex bridge.

Create an external network via dashboard (select simple flat type)

Create Tenant Network

Create tenant routes

Add interfaces for routes to the subnet you just created

View network topology after creation

Because the packstack test image cirros has been installed, you can now start the instance happily.

Once by openstack network make scalp tingle, here send a simple flow trend, please big brother do not like not spray, if there is a mistake please big brother guidance

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