1.虚拟机创建时设置密码计算节点安装以下软件包yum install libguestfs python-libguestfs libguestfs-tools-c配置计算节点nova配置文件/etc/nova/nova.conf,添加如下选项[libvirt]inject_password=trueinject_key=trueinject_partition=-1 重启计算节点的nova服务systemctl restart openstack-nova-compute libvirtd user data 也可以是 cloud-init 支持的一个 yaml 结构文件，所以还可以通过如下方式改密码# cat ./cloud-config.txt
#cloud-config
chpasswd:
list: |
root:123456
expire: False
创建虚拟机并设置密码的命令如下nova boot –user-data ./cloud-config.txt –image … 或者openstack server create –user-data ./cloud-config.txt –image …示范如下openstack server create –flavor 1c2g –user-data ./cloud-config.txt –availability-zone nova –image 75398b9c-5cd6-4936-a093-eba02984f7f0 \–nic net-id=5ac5c948-909f-47ff-beba-a2ffaf917c5f,v4-fixed-ip=172.16.99.134 \–nic net-id=85ae5035-203b-4ef7-b65c-397f80b5a8af,v4-fixed-ip=172.16.100.34 \–security-group 5bb5f2b1-9210-470f-a4a7-2715220b2920 tomcat-vm4 2.虚拟机启动后修改密码如果需要nova set-password起作用，需要image中装有qemu-guest-agent，另外需要设置meta中的 hw_qemu_guest_agent为yes2.1首先需要在openstack镜像中增加metadata信息：hw_qemu_guest_agent=yes，命令如下：# glance image-update 75398b9c-5cd6-4936-a093-eba02984f7f0 –property hw_qemu_guest_agent=yes
+---------------------+--------------------------------------------------------------------+
| Property | Value |
+---------------------+--------------------------------------------------------------------+
| checksum | fc345c82d1f2f28c63a1be8b386a15e4 |
| container_format | bare |
| created_at | 2020-02-19T08:45:40Z |
| direct_url | file:///var/lib/glance/images/75398b9c-5cd6-4936-a093-eba02984f7f0 |
| disk_format | raw |
| hw_qemu_guest_agent | yes |
| id | 75398b9c-5cd6-4936-a093-eba02984f7f0 |
| min_disk | 0 |
| min_ram | 0 |
| name | CentOS 7.6 64位 |
| owner | 75aed7016c86445198356e78dddde4ba |
| protected | False |
| size | 5368709120 |
| status | active |
| tags | [] |
| updated_at | 2020-02-20T05:05:58Z |
| virtual_size | None |
| visibility | public |
+---------------------+--------------------------------------------------------------------+
其中75398b9c-5cd6-4936-a093-eba02984f7f0为镜像ID 修改启动后的虚拟机密码为123456# nova set-password 550e9a70-8064-4180-8bab-502ee15e6647 或者 openstack server set –root-password 550e9a70-8064-4180-8bab-502ee15e6647New password:Again:其中550e9a70-8064-4180-8bab-502ee15e6647为虚拟机ID# nova help set-passwordusage: nova set-password <server> Change the admin password for a server. Positional arguments: <server> Name or ID of server.测试密码是否修改成功# sshpass -p ‘123456’ ssh root@172.16.99.134 w13:28:54 up 14 min, 1 user, load average: 0.04, 0.08, 0.13USER TTY FROM LOGIN@ IDLE JCPU PCPU WHATroot pts/0 10.30.1.103 13:20 8:28 0.03s 0.03s -bash 在openstack horizon中重建实例时支持设置密码，同样可以生效了。 扩展1：给单个云主机中增加metadata信息：hw_qemu_guest_agent=yes，命令如下：nova meta 550e9a70-8064-4180-8bab-502ee15e6647 set hw_qemu_guest_agent=yes 扩展2：上传镜像前修改密码virt-customize -a /tmp/CentOS7.6_x86_64.raw –root-password password:123456上传镜像openstack image create “CentOS 7.6 64位 V2” –file /tmp/CentOS7.6_x86_64.raw –disk-format raw –container-format bare –public
