OpenStack Pike : Add Compute Nodes2017/09/03 |
Add Compute Nodes to run more instances.
This example is based on the emvironment like follows.
------------+-----------------------------+------------ | | 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 | | | +-----------------------+ +-----------------------+ |
[1] |
Install KVM Hypervisor on Compute Node.
It's unnecessarry to set Bridge networking on the section [2] of the link. |
[2] | Install Nova-Compute. |
[root@node01 ~]# yum --enablerepo=centos-openstack-pike,epel -y install openstack-nova-compute
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[3] | Configure Nova. |
[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 vncserver_listen = 0.0.0.0 vncserver_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] auth_uri = http://10.0.0.30:5000 auth_url = http://10.0.0.30:35357 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://10.0.0.30:35357 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 |
[4] | If SELinux is enabled, change policy like follows. |
[root@node01 ~]#
vi nova-compute_pol.te # create new module nova-compute_pol 1.0; require { type nova_t; type nova_var_lib_t; type nova_log_t; type virtlogd_t; type sysctl_net_t; type netutils_exec_t; class file { read append getattr create open execute }; class dir { write search add_name }; class capability { dac_override kill sys_ptrace }; class capability2 block_suspend; } #============= nova_t ============== allow nova_t netutils_exec_t:file execute; allow nova_t self:capability kill; allow nova_t sysctl_net_t:dir search; allow nova_t sysctl_net_t:file { read getattr open }; allow nova_t self:capability sys_ptrace; allow nova_t self:capability2 block_suspend; #============= virtlogd_t ============== allow virtlogd_t nova_var_lib_t:dir search; allow virtlogd_t nova_var_lib_t:file { append getattr open }; allow virtlogd_t self:capability dac_override; checkmodule -m -M -o nova-compute_pol.mod nova-compute_pol.te checkmodule: loading policy configuration from nova-compute_pol.te checkmodule: policy configuration loaded checkmodule: writing binary representation (version 17) to nova-compute_pol.mod [root@node01 ~]# semodule_package --outfile nova-compute_pol.pp --module nova-compute_pol.mod [root@node01 ~]# semodule -i nova-compute_pol.pp |
[5] | If Firewalld is running, allow service ports. |
[root@dlp ~(keystone)]# firewall-cmd --add-port=5900-5999/tcp --permanent success [root@dlp ~(keystone)]# firewall-cmd --reload success |
[6] | Start Nova Compute Service. |
[root@node01 ~]# systemctl start openstack-nova-compute [root@node01 ~]# systemctl enable openstack-nova-compute |
[7] | Make sure the status of Nova services on Controle Node like here. If all State is [up], they are running normally. |
# 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 | +----+------------------+------------------+----------+---------+-------+----------------------------+ | 4 | nova-consoleauth | dlp.srv.world | internal | enabled | up | 2017-09-04T09:40:20.000000 | | 5 | nova-conductor | dlp.srv.world | internal | enabled | up | 2017-09-04T09:40:18.000000 | | 6 | nova-scheduler | dlp.srv.world | internal | enabled | up | 2017-09-04T09:40:18.000000 | | 7 | nova-compute | dlp.srv.world | nova | enabled | up | 2017-09-04T09:40:15.000000 | | 8 | nova-compute | node01.srv.world | nova | enabled | up | 2017-09-04T09:40:19.000000 | +----+------------------+------------------+----------+---------+-------+----------------------------+ |
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