OpenStack Victoria : Add Compute Nodes2021/08/31 |
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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] |
Install KVM Hypervisor on Compute Node, refer to here.
It's unnecessarry to set Bridge networking on the section [2] of the link. |
| [2] | Install Nova-Compute. For questions duruing the installation, it's OK with [No] to all. |
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root@node01:~#
apt -y install nova-compute nova-compute-kvm qemu-system-data # on Debian 11 default is set cgroup v2, however, # specific feature does not work on Nova-Compute, so fall back to cgroup v1 root@node01:~# vi /etc/default/grub # line 10 : add GRUB_DEFAULT=0 GRUB_TIMEOUT=5 GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian` GRUB_CMDLINE_LINUX_DEFAULT="quiet" GRUB_CMDLINE_LINUX=" systemd.unified_cgroup_hierarchy=false systemd.legacy_systemd_cgroup_controller=false "
root@node01:~#
root@node01:~# update-grub
reboot
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| [3] | 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 own 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 [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 root@node01:~# systemctl restart nova-compute
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| [4] | Confirm the status of Nova services on Controle Node. 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" root@dlp ~(keystone)# openstack compute service list +----+----------------+------------------+----------+---------+-------+----------------------------+ | ID | Binary | Host | Zone | Status | State | Updated At | +----+----------------+------------------+----------+---------+-------+----------------------------+ | 1 | nova-conductor | dlp.srv.world | internal | enabled | up | 2021-08-31T07:38:56.000000 | | 3 | nova-scheduler | dlp.srv.world | internal | enabled | up | 2021-08-31T07:38:57.000000 | | 8 | nova-compute | dlp.srv.world | nova | enabled | up | 2021-08-31T07:38:58.000000 | | 9 | nova-compute | node01.srv.world | nova | enabled | up | 2021-08-31T07:39:00.000000 | +----+----------------+------------------+----------+---------+-------+----------------------------+ |
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