一般登陆openstack 创建的虚拟机投一些命令可以直接通过ssh vm所在网络的ip登陆该vm。
若网络不通的情况，就会通过dashboard 的 vnc页面 进入vm操作或者配置网络重启网络服务
也可以到vm所在的computer节点通过virt-manager，就是KVM的界面登陆
但是这两只种情况，前者需要安装dashboard，对于非用户的开发人员，一般都是在CLI下操作。后者需要安装带图形化界面的操作系统，往往computer节点开始安装操作系统的时候是最小安装。
现在介绍一种通过远程vnc查看openstack 创建的虚拟机的方法
vm所在的computer节点不是带图形化界面的操作系统没有关系，只要远程登陆的机器上是即可。在远程机器上安装vncviewer
# yum install tigervnc
Loaded plugins: langpacks, product-id, subscription-manager
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
InstallMedia | 4.1 kB 00:00:00
Resolving Dependencies
--> Running transaction check
---> Package tigervnc.x86_64 0:1.3.1-3.el7 will be installed
--> Processing Dependency: tigervnc-icons for package: tigervnc-1.3.1-3.el7.x86_64
--> Processing Dependency: libfltk.so.1.3()(64bit) for package: tigervnc-1.3.1-3.el7.x86_64
--> Processing Dependency: libfltk_images.so.1.3()(64bit) for package: tigervnc-1.3.1-3.el7.x86_64
--> Running transaction check
---> Package fltk.x86_64 0:1.3.0-13.el7 will be installed
---> Package tigervnc-icons.noarch 0:1.3.1-3.el7 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
==============================================================================================
Package Arch Version Repository Size
==============================================================================================
Installing:
tigervnc x86_64 1.3.1-3.el7 InstallMedia 210 k
Installing for dependencies:
fltk x86_64 1.3.0-13.el7 InstallMedia 654 k
tigervnc-icons noarch 1.3.1-3.el7 InstallMedia 35 k
Transaction Summary
==============================================================================================
Install 1 Package (+2 Dependent packages)
Total size: 899 k
Total download size: 245 k
Installed size: 2.1 M
Is this ok [y/d/N]: y
Downloading packages:
No Presto metadata available for InstallMedia
(1/2): tigervnc-icons-1.3.1-3.el7.noarch.rpm | 35 kB 00:00:00
(2/2): tigervnc-1.3.1-3.el7.x86_64.rpm | 210 kB 00:00:00
----------------------------------------------------------------------------------------------
Total 2.9 MB/s | 245 kB 00:00:00
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : fltk-1.3.0-13.el7.x86_64 1/3
Installing : tigervnc-icons-1.3.1-3.el7.noarch 2/3
Installing : tigervnc-1.3.1-3.el7.x86_64 3/3
Verifying : tigervnc-1.3.1-3.el7.x86_64 1/3
Verifying : tigervnc-icons-1.3.1-3.el7.noarch 2/3
Verifying : fltk-1.3.0-13.el7.x86_64 3/3
Installed:
tigervnc.x86_64 0:1.3.1-3.el7
Dependency Installed:
fltk.x86_64 0:1.3.0-13.el7 tigervnc-icons.noarch 0:1.3.1-3.el7
Complete!
登陆controller节点，查看需要vnc查看的vm的详细信息
[root@localhost ~(keystone_admin)]# nova list
+--------------------------------------+------+--------+------------+-------------+---------------+
| ID | Name | Status | Task State | Power State | Networks |
+--------------------------------------+------+--------+------------+-------------+---------------+
| 7a47e769-acd0-45bd-b807-f01059c3b002 | hhh | ACTIVE | - | Running | abc=10.0.0.15 |
+--------------------------------------+------+--------+------------+-------------+---------------+
[root@localhost ~(keystone_admin)]# nova show hhh
+--------------------------------------+----------------------------------------------------------+
| Property | Value |
+--------------------------------------+----------------------------------------------------------+
| OS-DCF:diskConfig | MANUAL |
| OS-EXT-AZ:availability_zone | nova |
| OS-EXT-SRV-ATTR:host | localhost |
| OS-EXT-SRV-ATTR:hypervisor_hostname | localhost |
| OS-EXT-SRV-ATTR:instance_name | instance-0000000d |
| OS-EXT-STS:power_state | 1 |
| OS-EXT-STS:task_state | - |
| OS-EXT-STS:vm_state | active |
| OS-SRV-USG:launched_at | 2016-08-18T19:15:24.000000 |
| OS-SRV-USG:terminated_at | - |
| abc network | 10.0.0.15 |
| accessIPv4 | |
| accessIPv6 | |
| config_drive | |
| created | 2016-08-18T19:15:20Z |
| flavor | m1.large (4) |
| hostId | 58d0a60d000fe966e7c6bd13be84abac721a5f825a4aa62b14cb8d3b |
| id | 7a47e769-acd0-45bd-b807-f01059c3b002 |
| image | ggg (fd4842a5-deca-4252-ac6f-d06b1e452eb8) |
| key_name | - |
| metadata | {} |
| name | hhh |
| os-extended-volumes:volumes_attached | [] |
| progress | 0 |
| security_groups | default |
| status | ACTIVE |
| tenant_id | 2f30485c331a4f27b4fdd8938aa9bb15 |
| updated | 2016-08-18T19:15:24Z |
| user_id | 352e4067d6fd4cfd90311e76f0dd763c |
+--------------------------------------+----------------------------------------------------------+查到第15行
OS-EXT-SRV-ATTR:instance_name | instance-0000000d
信息
登陆该vm所在计算节点上查询该vm的KVM的实例分配的vnc端口号
[root@localhost dev(keystone_admin)]# virsh vncdisplay instance-0000000d
:0
远程打开nvcviewer，地址输入xx.xx.xx.xx:0 （xx.xx.xx.xx是该vm所在计算节点ip地址）
即可vnc查看openstack 创建的虚拟机
若不能vnc查看，确认防火墙是否关闭或者开放vnc访问的端口号
[root@localhost dev(keystone_admin)]# service iptables status
Redirecting to /bin/systemctl status iptables.service
● iptables.service - IPv4 firewall with iptables
Loaded: loaded (/usr/lib/systemd/system/iptables.service; enabled; vendor preset: disabled)
Active: active (exited) since Wed 2016-08-17 23:49:47 JST; 1 day 4h ago
Process: 740 ExecStart=/usr/libexec/iptables/iptables.init start (code=exited, status=0/SUCCESS)
Main PID: 740 (code=exited, status=0/SUCCESS)
CGroup: /system.slice/iptables.service
Aug 17 23:49:46 localhost.localdomain systemd[1]: Starting IPv4 firewall with iptables...
Aug 17 23:49:47 localhost.localdomain iptables.init[740]: iptables: Applying firewall ru...]
Aug 17 23:49:47 localhost.localdomain systemd[1]: Started IPv4 firewall with iptables.
Hint: Some lines were ellipsized, use -l to show in full.
[root@localhost dev(keystone_admin)]# service iptables stop
Redirecting to /bin/systemctl stop iptables.service
[root@localhost dev(keystone_admin)]# service iptables status
Redirecting to /bin/systemctl status iptables.service
● iptables.service - IPv4 firewall with iptables
Loaded: loaded (/usr/lib/systemd/system/iptables.service; enabled; vendor preset: disabled)
Active: failed (Result: exit-code) since Fri 2016-08-19 04:27:42 JST; 1s ago
Process: 2453 ExecStop=/usr/libexec/iptables/iptables.init stop (code=exited, status=5)
Process: 740 ExecStart=/usr/libexec/iptables/iptables.init start (code=exited, status=0/SUCCESS)
Main PID: 740 (code=exited, status=0/SUCCESS)
Aug 17 23:49:47 localhost.localdomain iptables.init[740]: iptables: Applying firewall ru...]
Aug 17 23:49:47 localhost.localdomain systemd[1]: Started IPv4 firewall with iptables.
Aug 19 04:27:41 localhost systemd[1]: Stopping IPv4 firewall with iptables...
Aug 19 04:27:41 localhost iptables.init[2453]: iptables: Setting chains to policy ACCEP... ]
Aug 19 04:27:41 localhost iptables.init[2453]: iptables: Flushing firewall rules: [ OK ]
Aug 19 04:27:41 localhost iptables.init[2453]: iptables: Unloading modules: iptable_fi...D]
Aug 19 04:27:42 localhost systemd[1]: iptables.service: control process exited, code=e...s=5
Aug 19 04:27:42 localhost systemd[1]: Stopped IPv4 firewall with iptables.
Aug 19 04:27:42 localhost systemd[1]: Unit iptables.service entered failed state.
Aug 19 04:27:42 localhost systemd[1]: iptables.service failed.
Hint: Some lines were ellipsized, use -l to show in full.
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