Article directory
- Preface
- 1. Architecture introduction
- 2. Preparation
-
- 1. Configure hosts
- 2. Change the host name and configure hosts mapping
- 3. Turn off the firewall, core protection, and network management
- 4. Mount the CD
- 5. Configure local source files
- 6. Time server deployment
- 7. Time client deployment
- 3. Install auxiliary components (rabbittmq, memcached, mariadb)
-
- 1. Configure epel-release source
- 2. Install rabbitmq
- 3. Edit rabbittmq variable file
- 4. Open rabbitmq’s web management page
- 5. Open the web for verification
- 6. Copy cookie to computing node
- 7. Configure the cluster
- 8. Configure the cluster
- 9. Verify rabbitmqctl cluster
- 1. Install and start mariadb
- 2. Modify configuration file
- 3. Configure automatic startup at boot
- 4.Initialize mariadb
- 5.Verification
- 1.Install memcached
- 2. Open the web for verification
- 3. Configure memcached to start automatically
- 4.Verification
- Summarize
Foreword
Chapter 1 of installing official openstack through yum on CentOS 7.9
This article introduces the preliminary preparations for installing openstack, including the establishment of message queues, databases, and caches.
In the future, there will be deployment of keystone, glance, nova, neutron, chinder, and Dashboard.
Following the deployment of this set of articles, you can ensure that you can build a complete openstack.
1. Architecture introduction
1. Control node (control node: rs1)
CPU: Dual core, dual thread – CPU virtualization enabled
Memory: 8G (minimum memory 6G, if it is less than 6G, problems will occur)
Hard drive: 60G
Network card: NAT1-192.168.244.50 NAT-2-192.168.244.40 VM1-172.16.0.40
There are 3 network cards: 1. VM1 (internal network card) 2. NAT (can access the Internet), NAT2 (can access the Internet)
Operating system: Centos 7.9 –minimized installation
2. Computing node 1 (computing node: rs2)
CPU: Dual core, dual thread – CPU virtualization enabled
Memory: 8G (minimum memory 6G, if it is less than 6G, problems will occur)
Hard drive: 60G
Network card: NAT-192.168.244.41 VM1-172.16.0.41
There are 2 network cards: 1. VM1 (internal network card) 2. NAT (can access the Internet)
Operating system: Centos 7.9 – Minimal installation
3. Computing node 2 (computing node: rs2)
CPU: Dual core, dual thread – CPU virtualization enabled
Memory: 8G (minimum memory 6G, if it is less than 6G, problems will occur)
Hard drive: 60G
Network card: NAT-192.168.244.42 VM1-172.16.0.42
There are 2 network cards: 1. VM1 (internal network card) 2. NAT (can access the Internet)
Operating system: Centos 7.9 – Minimal installation
2. Preparation
1. Configure hosts
The code is as follows (example):
vi /etc/hosts
192.168.244.50 rs1 192.168.244.51rs1 192.168.244.52rs3
2. Change the host name and configure hosts mapping
Full node configuration
hostnamectl set-hostname rs1 hostnamectl set-hostname rs2 hostnamectl set-hostname rs3
3. Turn off the firewall, core protection, and network management
Full node configuration
systemctl stop firewalld systemctl disable firewalld setenforce 0 vi /etc/selinux/config Change to SELINUX=disabled systemctl stop NetworkManager systemctl disable NetworkManager
4. Mount the CD
Full node configuration
Mount the CD and configure automatic mounting at startup
mount /dev/cdrom /mnt df-hT vi /etc/fstab #Automatically mount on boot Insert last line /dev/cdrom /mnt iso9660 defaults 0 0
5. Configure local source files
Full node configuration
# mount -a or init 6 # cd /etc/yum.repos.d # vi local.repo Insert last line [centos] name=centos baseurl=file:///mnt gpgcheck=0 enabled=1 #Update yum source # yum clean all # yum makecache
6. Time server deployment
Control node deployment
(1) Installation time synchronization, synchronization with Alibaba Cloud # yum -y install ntpdate ntp install time synchronization, clock service # ntpdate ntp.aliyun.com Synchronize Alibaba Cloud # ntpdate ntp.aliyun.com >>/var/log/ntpdate.log generate log files Set periodic scheduled tasks #crontab-e */30 * * * * /usr/sbin/ntpdate ntp.aliyun.com >>/var/log/ntpdate.log # systemctl restart crond # systemctl enable crond (2) Set China time zone timedatectl set-timezone Asia/Shanghai mv /etc/localtime /etc/localtime.bak ln -s /usr/share/zoneinfo/Asia/Shanghai /etc/localtime (3) Modify configuration file vi /etc/ntp.conf restrict 192.168.244.0 mask 255.255.255.0 nomodify notrap #comments #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 #New server 127.127.1.0 fudge 127.127.1.0 stratum 8 serverntp.aliyun.com fudge ntp.aliyun.com stratum 8 (4) Start ntp service # systemctl disable chronyd.service --NTP restart BUG -- Restart the system by disabling the chronyd service from booting # systemctl restart ntpd --Restart the ntp server # systemctl enable ntpd --Start the ntp server at boot
7. Time client deployment
Compute node deployment
(1) Install client # yum -y install ntpdate Install time synchronization # ntpdate rs1 or # ntpdate 192.168.244.40 time synchronization control node (2) Set China time zone timedatectl set-timezone Asia/Shanghai mv /etc/localtime /etc/localtime.bak ln -s /usr/share/zoneinfo/Asia/Shanghai /etc/localtime (3) Synchronization plan crontab -e */30 * * * * /usr/sbin/ntpdate ntp.aliyun.com >>/var/log/ntpdate.log
3. Install auxiliary components (rabbittmq, memcached, mariadb)
(1) Install and configure rabbittmq cluster
1. Configure epel-release source
Full node configuration
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo yum install epel-release net-tools -y yum clean all yum makecache
2. Install rabbitmq
Full node configuration
yum install -y erlang rabbitmq-server.noarch systemctl enable rabbitmq-server.service systemctl start rabbitmq-server.service systemctl status rabbitmq-server.service Check if the port exists netstat -lantp | grep 5672 View cluster status rabbitmqctl cluster_status
3. Edit rabbittmq variable file
Full node configuration
#IP changed to local IP
vim /etc/rabbitmq/rabbitmq-env.conf
RABBITMQ_NODE_PORT=5672
ulimit -S -n 4096
RABBITMQ_SERVER_ERL_ARGS=" + K true + A30 + P 1048576 -kernel inet_default_connect_options
[{<!-- -->nodelay,true},{<!-- -->raw,6,18,<<5000:64/native>>}] -kernel inet_default_listen_options
[{<!-- -->raw,6,18,<<5000:64/native>>}]" RABBITMQ_NODE_IP_ADDRESS=192.168.244.40
4. Open rabbitmq’s web management page
Full node configuration
rabbitmq-plugins enable rabbitmq_management systemctl restart rabbitmq-server.service systemctl status rabbitmq-server.service
5. Open the web for verification
Account: guest Password: guest http://192.168.244.40:15672/#/ http://192.168.244.41:15672/#/ http://192.168.244.42:15672/#/
6. Copy cookie to computing node
Control node configuration
scp /var/lib/rabbitmq/.erlang.cookie rs2:/var/lib/rabbitmq/.erlang.cookie scp /var/lib/rabbitmq/.erlang.cookie rs3:/var/lib/rabbitmq/.erlang.cookie
7. Configure the cluster
Compute node configuration
systemctl restart rabbitmq-server.service rabbitmqctl stop_app rabbitmqctl join_cluster --ram rabbit@rs1 rabbitmqctl start_app
8. Configure the cluster
Compute node configuration
#Create an openstack account and let openstack call mq through this account rabbitmqctl add_user openstack admin rabbitmqctl set_permissions openstack ".*" ".*" ".*" rabbitmqctl set_user_tags openstack administrator
9. Verify rabbitmqctl cluster
Control node configuration
rabbitmqctl cluster_status
[root@rs1 ~]# rabbitmqctl cluster_status
Cluster status of node rabbit@rs1 ...
[{<!-- -->nodes,[{<!-- -->disc,[rabbit@rs1]},{<!-- -->ram,[rabbit@rs3,rabbit@rs2]}] },
{<!-- -->running_nodes,[rabbit@rs1]},
{<!-- -->cluster_name,<<"rabbit@rs1">>},
{<!-- -->partitions,[{<!-- -->rabbit@rs1,[rabbit@rs3]}]}]
...done.
(2) Install and configure mariadb
1. Install and start mariadb
Control node configuration
yum install mariadb mariadb-server python2-PyMySQL -y systemctl start mariadb.service
2. Modify the configuration file
Control node configuration
vi /etc/my.cnf.d/openstack.cnf [mysqld] bind-address = 192.168.244.40 default-storage-engine=innodb innodb_file_per_table = on max_connections = 4096 collation-server = utf8_general_ci character-set-server=utf8
3. Configure auto-start at boot
Control node configuration
systemctl enable mariadb.service systemctl start mariadb.service
4.Initialize mariadb
Control node configuration
mysql_secure_installation
5.Verification
Control node configuration
[root@rs1 ~]# mysql -uroot -p Enter password: Welcome to the MariaDB monitor. Commands end with ; or \g. Your MariaDB connection id is 350 Server version: 10.3.10-MariaDB MariaDB Server Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. MariaDB [(none)]> show databases; + -------------------- + | Database | + -------------------- +
(3) Install and configure memcached
1. Install memcached
yum install memcached python-memcached -y
2. Open the web for verification
vi /etc/sysconfig/memcached OPTIONS="-l 127.0.0.1,::1,rs1"
3. Configure memcached to start automatically
systemctl enable memcached.service systemctl start memcached.service
4.Verification
[root@rs1 ~]# ss -lntp|grep memcached
LISTEN 0 128 192.168.244.40:11211 *:* users:(("memcached",pid=10087,fd=28))
LISTEN 0 128 127.0.0.1:11211 *:* users:(("memcached",pid=10087,fd=26))
LISTEN 0 128 [::1]:11211 [::]:* users:(("memcached",pid=10087,fd=27))
Summary
The above is what I will talk about today. This article only briefly introduces the installation of the early components of openstack. From here on, we will officially enter the deployment of openstack components. As long as you follow this tutorial, you can guarantee that you can deploy a complete openstack cluster.