OpenStack Xena : Add Compute Nodes2021/11/22 |
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Add Compute Nodes to run more instances.
This example is based on the environment like follows.
------------+-----------------------------+------------
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eth0|10.0.0.30 eth0|10.0.0.51
+-----------+-----------+ +-----------+-----------+
| [ Control Node ] | | [ Compute Node ] |
| | | |
| MariaDB RabbitMQ | | Libvirt |
| Memcached httpd | | Nova Compute |
| Keystone Glance | | |
| Nova API | | |
+-----------------------+ +-----------------------+
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| [1] |
On new Compute Nodes, Set OpenStack Xena repository, refer to here of [3].
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| [2] |
On new Compute Nodes, Install KVM Hypervisor on Compute Node, refer to here.
It's unnecessarry to set Bridge networking on the section [2] of the link. |
| [3] | Install Nova-Compute. |
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[root@node01 ~]# dnf --enablerepo=centos-openstack-xena,powertools,epel -y install openstack-nova-compute
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| [4] | Configure Nova. |
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[root@node01 ~]# mv /etc/nova/nova.conf /etc/nova/nova.conf.org
[root@node01 ~]#
vi /etc/nova/nova.conf # create new [DEFAULT] # define IP address my_ip = 10.0.0.51 state_path = /var/lib/nova enabled_apis = osapi_compute,metadata log_dir = /var/log/nova # RabbitMQ connection info transport_url = rabbit://openstack:password@10.0.0.30 compute_driver = libvirt.LibvirtDriver [api] auth_strategy = keystone # enable VNC [vnc] enabled = True server_listen = 0.0.0.0 server_proxyclient_address = $my_ip novncproxy_base_url = http://10.0.0.30:6080/vnc_auto.html # Glance connection info [glance] api_servers = http://10.0.0.30:9292 [oslo_concurrency] lock_path = $state_path/tmp # Keystone auth info [keystone_authtoken] www_authenticate_uri = http://10.0.0.30:5000 auth_url = http://10.0.0.30:5000 memcached_servers = 10.0.0.30:11211 auth_type = password project_domain_name = default user_domain_name = default project_name = service username = nova password = servicepassword [placement] auth_url = http://10.0.0.30:5000 os_region_name = RegionOne auth_type = password project_domain_name = default user_domain_name = default project_name = service username = placement password = servicepassword [wsgi] api_paste_config = /etc/nova/api-paste.ini chmod 640 /etc/nova/nova.conf [root@node01 ~]# chgrp nova /etc/nova/nova.conf |
| [5] | If SELinux is enabled, change policy. |
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[root@node01 ~]# dnf --enablerepo=centos-openstack-xena -y install openstack-selinux |
| [6] | If Firewalld is running, allow service ports. |
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[root@node01 ~]# firewall-cmd --add-port=5900-5999/tcp success [root@node01 ~]# firewall-cmd --runtime-to-permanent success |
| [7] | Start Nova Compute Service. |
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[root@node01 ~]# systemctl enable --now openstack-nova-compute |
| [8] | Verify the status of Nova services on Controle Node like here. If all State is [up], they are running normally. |
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# discover Compute Nodes [root@dlp ~(keystone)]# su -s /bin/bash nova -c "nova-manage cell_v2 discover_hosts"
openstack compute service list +----+----------------+------------------+----------+---------+-------+----------------------------+ | ID | Binary | Host | Zone | Status | State | Updated At | +----+----------------+------------------+----------+---------+-------+----------------------------+ | 6 | nova-conductor | dlp.srv.world | internal | enabled | up | 2021-11-22T04:55:20.000000 | | 10 | nova-scheduler | dlp.srv.world | internal | enabled | up | 2021-11-22T04:55:21.000000 | | 14 | nova-compute | dlp.srv.world | nova | enabled | up | 2021-11-22T04:55:20.000000 | | 15 | nova-compute | node01.srv.world | nova | enabled | up | 2021-11-22T04:55:19.000000 | +----+----------------+------------------+----------+---------+-------+----------------------------+ |
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