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丸趣 TV 小编给大家分享一下 Kilo 版 Openstack 如何删除一台计算节点，希望大家阅读完这篇文章之后都有所收获，下面让我们一起去探讨吧！
1、移除计算节点上的 ceph osd
停止节点上所有的 osd 服务
systemctl stop ceph-osd@20
systemctl stop ceph-osd@21
systemctl stop ceph-osd@22
systemctl stop ceph-osd@23在 mon 节点上移除 osd
ceph osd out 23
ceph osd out 22
ceph osd out 21
ceph osd out 20
ceph osd crush remove osd.23
ceph osd crush remove osd.22
ceph osd crush remove osd.21
ceph osd crush remove osd.20
ceph auth del osd.23
ceph auth del osd.22
ceph auth del osd.21
ceph auth del osd.20
ceph osd rm 23
ceph osd rm 22
ceph osd rm 21
ceph osd rm 20
ceph osd crush remove bdc8等待集群自动恢复即可 如果配置文件中有对应 osd 在某台节点上的配置，需要删掉
2、移除计算节点上 openstack 服务 2.1、计算节点上停止服务
systemctl stop neutron-openvswitch-agent.service
systemctl stop openstack-nova-compute.service
systemctl disable neutron-openvswitch-agent.service
systemctl disable openstack-nova-compute.service2.2、移除计算服务
查看计算节点服务
. admin-openrc.sh
nova service-list
+----+------------------+------+----------+---------+-------+----------------------------+-----------------+
| Id | Binary | Host | Zone | Status | State | Updated_at | Disabled Reason |
+----+------------------+------+----------+---------+-------+----------------------------+-----------------+
| 1 | nova-cert | bdc2 | internal | enabled | up | 2018-03-22T02:54:42.000000 | - |
| 2 | nova-conductor | bdc2 | internal | enabled | up | 2018-03-22T02:54:43.000000 | - |
| 3 | nova-consoleauth | bdc2 | internal | enabled | up | 2018-03-22T02:54:42.000000 | - |
| 4 | nova-scheduler | bdc2 | internal | enabled | up | 2018-03-22T02:54:40.000000 | - |
| 5 | nova-compute | bdc3 | nova | enabled | up | 2018-03-22T02:54:41.000000 | - |
| 6 | nova-compute | bdc2 | nova | enabled | up | 2018-03-22T02:54:45.000000 | - |
| 7 | nova-compute | bdc4 | nova | enabled | up | 2018-03-22T02:54:42.000000 | - |
| 8 | nova-compute | bdc5 | nova | enabled | up | 2018-03-22T02:54:44.000000 | - |
| 9 | nova-compute | bdc6 | nova | enabled | up | 2018-03-22T02:54:44.000000 | - |
| 10 | nova-compute | bdc7 | nova | enabled | up | 2018-03-22T02:54:46.000000 | - |
| 11 | nova-compute | bdc8 | nova | enabled | up | 2018-03-22T02:54:39.000000 | - |
+----+------------------+------+----------+---------+-------+----------------------------+-----------------+删除 bdc8 上的计算服务
nova service-disable 11
nova service-delete 11元数据库中删除
use nova;
select * from compute_nodes where host= bdc2 \G
delete from compute_nodes where host= bdc2
select * from services where host= bdc2 \G
delete from services where host= bdc22.3、移除网络服务
查看网络服务
# neutron agent-list
+--------------------------------------+--------------------+------+-------+----------------+---------------------------+
| id | agent_type | host | alive | admin_state_up | binary |
+--------------------------------------+--------------------+------+-------+----------------+---------------------------+
| 08bc9d33-3e67-4a06-9223-74be1c969b8a | Open vSwitch agent | bdc2 | :-) | True | neutron-openvswitch-agent |
| 19a31ea2-280b-42b4-9f08-c1f99182e826 | Open vSwitch agent | bdc5 | :-) | True | neutron-openvswitch-agent |
| 286336ae-22fd-4391-8470-aae559ee5ccb | DHCP agent | bdc3 | :-) | True | neutron-dhcp-agent |
| 42ab605e-3d66-402f-b86a-4ef246df2ecf | Open vSwitch agent | bdc8 | :-) | True | neutron-openvswitch-agent |
| 4791844d-07f7-43be-8b27-bcfe8d8a7791 | Open vSwitch agent | bdc6 | :-) | True | neutron-openvswitch-agent |
| 63c99510-205a-4f94-ac18-61082c6edb44 | L3 agent | bdc3 | :-) | True | neutron-l3-agent |
| 830a75fb-c516-4f6f-ae74-e09bfd558291 | Open vSwitch agent | bdc7 | :-) | True | neutron-openvswitch-agent |
| 91df9210-0a27-4933-9f03-3ccce6192011 | Open vSwitch agent | bdc4 | :-) | True | neutron-openvswitch-agent |
| a9f7bc30-beda-437d-92a8-be64296c57d0 | Open vSwitch agent | bdc3 | :-) | True | neutron-openvswitch-agent |
| cf6443f7-ef8e-4738-bfc5-e491e4f89aeb | Metadata agent | bdc3 | :-) | True | neutron-metadata-agent |
+--------------------------------------+--------------------+------+-------+----------------+---------------------------+删除 bdc8 上的网络服务
# neutron agent-delete 42ab605e-3d66-402f-b86a-4ef246df2ecf
Deleted agent: 42ab605e-3d66-402f-b86a-4ef246df2ecf3、元数据查看
nova 库
MariaDB [nova] select hypervisor_hostname,deleted_at,deleted from compute_nodes;
+---------------------+---------------------+---------+
| hypervisor_hostname | deleted_at | deleted |
+---------------------+---------------------+---------+
| bdc3 | NULL | 0 |
| bdc2 | NULL | 0 |
| bdc4 | NULL | 0 |
| bdc5 | NULL | 0 |
| bdc6 | NULL | 0 |
| bdc7 | NULL | 0 |
| bdc8 | 2018-03-22 02:58:53 | 7 |
+---------------------+---------------------+---------+
MariaDB [nova] select * from services where host = bdc8
+---------------------+---------------------+---------------------+----+------+--------------+---------+--------------+----------+---------+-----------------+
| created_at | updated_at | deleted_at | id | host | binary | topic | report_count | disabled | deleted | disabled_reason |
+---------------------+---------------------+---------------------+----+------+--------------+---------+--------------+----------+---------+-----------------+
| 2016-10-13 09:20:41 | 2018-03-22 02:58:49 | 2018-03-22 02:58:53 | 11 | bdc8 | nova-compute | compute | 4442289 | 0 | 11 | NULL |
+---------------------+---------------------+---------------------+----+------+--------------+---------+--------------+----------+---------+-----------------+4、删除其它节点与 bdc8 连通的隧道网络
先在元数据库中删除 bdc8 的 gre 信息
MariaDB [neutron] select * from ml2_gre_endpoints;
+-------------+------+
| ip_address | host |
+-------------+------+
| 172.16.13.2 | bdc2 |
| 172.16.13.3 | bdc3 |
| 172.16.13.4 | bdc4 |
| 172.16.13.5 | bdc5 |
| 172.16.13.6 | bdc6 |
| 172.16.13.7 | bdc7 |
| 172.16.13.8 | bdc8 |
+-------------+------+
MariaDB [neutron] delete from ml2_gre_endpoints where ip_address= 172.16.13.8各个节点中删除连接 bdc8 的 gre 隧道
# ovs-vsctl show
8d6ea1e1-9b90-4e6b-94ae-d5a04601daf9
Bridge br-tun
fail_mode: secure
Port gre-ac100d03
Interface gre-ac100d03
type: gre
options: {df_default= true , in_key=flow, local_ip= 172.16.13.2 , out_key=flow, remote_ip= 172.16.13.3}
Port gre-ac100d07
Interface gre-ac100d07
type: gre
options: {df_default= true , in_key=flow, local_ip= 172.16.13.2 , out_key=flow, remote_ip= 172.16.13.7}
Port gre-ac100d08
Interface gre-ac100d08
type: gre
options: {df_default= true , in_key=flow, local_ip= 172.16.13.2 , out_key=flow, remote_ip= 172.16.13.8}
Port gre-ac100d05
Interface gre-ac100d05
type: gre
options: {df_default= true , in_key=flow, local_ip= 172.16.13.2 , out_key=flow, remote_ip= 172.16.13.5}
Port gre-ac100d06
Interface gre-ac100d06
type: gre
options: {df_default= true , in_key=flow, local_ip= 172.16.13.2 , out_key=flow, remote_ip= 172.16.13.6}
Port patch-int
Interface patch-int
type: patch
options: {peer=patch-tun}
Port gre-ac100d04
Interface gre-ac100d04
type: gre
options: {df_default= true , in_key=flow, local_ip= 172.16.13.2 , out_key=flow, remote_ip= 172.16.13.4}
Port br-tun
Interface br-tun
type: internal
Bridge br-int
fail_mode: secure
Port qvo86bf0e09-3f
tag: 2
Interface qvo86bf0e09-3f
Port qvo73d3f4d9-72
tag: 2
Interface qvo73d3f4d9-72
Port br-int
Interface br-int
type: internal
Port qvo7c5fbeca-ab
tag: 2
Interface qvo7c5fbeca-ab
Port qvo2364aa3b-98
tag: 4
Interface qvo2364aa3b-98
Port qvo0194c615-74
tag: 5
Interface qvo0194c615-74
Port patch-tun
Interface patch-tun
type: patch
options: {peer=patch-int}
Port qvo4a30d4d8-e3
tag: 3
Interface qvo4a30d4d8-e3
Port qvo1d912409-ed
tag: 2
Interface qvo1d912409-ed
Port qvoe79c563d-50
tag: 1
Interface qvoe79c563d-50
Port qvo4b146bb0-52
tag: 3
Interface qvo4b146bb0-52
ovs_version: 2.5.0所有节点上连接 bdc8 的 port 一样，全都需要删除
# ovs-vsctl del-port br-tun gre-ac100d08看完了这篇文章，相信你对“Kilo 版 Openstack 如何删除一台计算节点”有了一定的了解，如果想了解更多相关知识，欢迎关注丸趣 TV 行业资讯频道，感谢各位的阅读！
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