OpenStack 安装和使用（五）

2018-03-14

使用Eucalyptus tools 管理虚拟机

# euca-run-instances f16-jeos -k f16jeos

RESERVATION r-nslxocfx 94d38db32a7d4107beeed36d9e98bf06 default
INSTANCE i-00000003 ami-00000001 server-3 server-3 pending f16jeos (94d38db32a7d4107beeed36d9e98bf06, None) 0 m1.small 2012-07-17T02:13:00.000Z unknown zone

这里使用了环境变量里面的EC2_URL、EC2_ACCESS_KEY、EC2_SECRET_KEY（上一章里面已经建立好了），这里的f16-jeos在上一章已经放入glance，这里的f6jeos为ssh key对，上一章已经生成。

# euca-describe-instances
RESERVATION     r-nslxocfx      94d38db32a7d4107beeed36d9e98bf06        default
INSTANCE        i-00000003      ami-00000001    server-3        server-3        running f16jeos (94d38db32a7d4107beeed36d9e98bf06, cc)      0               m1.small        2012-07-17T02:13:00.000Z        nova
RESERVATION     r-dib7miiv      94d38db32a7d4107beeed36d9e98bf06        default
INSTANCE        i-00000002      ami-00000001    f16jeos-vm      f16jeos-vm      running f16jeos (94d38db32a7d4107beeed36d9e98bf06, cc)      0               m1.small        2012-07-16T10:41:51.000Z        nova

看到启动了两个实例，i-00000003为刚才用euca-run-instances启动的，i-00000002为上一章nova boot命令启动的。

# euca-get-console-output i-00000003
i-00000003
2012-07-17T02:19:18.272Z

# euca-terminate-instances i-00000003

使用OZ-install来客户化自己的VM image：

安装oz-install:

# yum install –enablerepo=updates-testing gvnc-tools
# yum install –enablerepo=updates-testing numpy
# yum install –enablerepo=updates-testing pyparted
# yum install –enablerepo=updates-testing python-libguestfs
# yum install –enablerepo=updates-testing /usr/bin/oz-install

建立tdl模板，参考：http://aeolusproject.org/oz.html 和https://github.com/rackerjoe/oz-image-build ，需要继续研究：

# cat f16-jeos.tdl

<template>
<name>fedora16_x86_64</name>
<description>My Fedora 16 x86_64 template</description>
<os>
<name>Fedora</name>
<version>16</version>
<arch>x86_64</arch>
<install type=’iso’>
<iso>file:///root/Fedora-16-x86_64-DVD.iso</iso>
</install>
</os>
<commands>
<command name=’setup-rc-local’>
sed -i ‘s/rhgb quiet/console=ttyS0/’ /boot/grub/grub.conf

cat >> /etc/rc.local << EOF
if [ ! -d /root/.ssh ]; then
mkdir -p /root/.ssh
chmod 700 /root/.ssh
fi

# Fetch public key using HTTP
ATTEMPTS=10
while [ ! -f /root/.ssh/authorized_keys ]; do
curl -f http://169.254.169.254/latest/meta-data/public-keys/0/openssh-key > /tmp/aws-key 2>/dev/null
if [ \$? -eq 0 ]; then
cat /tmp/aws-key >> /root/.ssh/authorized_keys
chmod 0600 /root/.ssh/authorized_keys
restorecon /root/.ssh/authorized_keys
rm -f /tmp/aws-key
echo “Successfully retrieved AWS public key from instance metadata”
else
FAILED=\$((\$FAILED + 1))
if [ \$FAILED -ge \$ATTEMPTS ]; then
echo “Failed to retrieve AWS public key after \$FAILED attempts, quitting”
break
fi
echo “Could not retrieve AWS public key (attempt #\$FAILED/\$ATTEMPTS), retrying in 5 seconds…”
sleep 5
fi
done
EOF
</command>
</commands>
</template>

生成dsk文件：

# oz-install -d4 -u f16-jeos.tdl
导入glance：
# glance add name=f16-jeos-new is_public=true container_format=bare disk_format=raw < /var/lib/libvirt/images/fedora16_x86_64.dsk

启动该客户化的OS image：

# euca-run-instances f16-jeos-new -k f16jeos

# euca-describe-instances
RESERVATION     r-nslxocfx      94d38db32a7d4107beeed36d9e98bf06        default
INSTANCE        i-00000003      ami-00000001    server-3        server-3        running f16jeos (94d38db32a7d4107beeed36d9e98bf06, cc)      0               m1.small        2012-07-17T02:13:00.000Z        nova
RESERVATION     r-dib7miiv      94d38db32a7d4107beeed36d9e98bf06        default
INSTANCE        i-00000002      ami-00000001    f16jeos-vm      f16jeos-vm      running f16jeos (94d38db32a7d4107beeed36d9e98bf06, cc)      0               m1.small        2012-07-16T10:41:51.000Z        nova
RESERVATION     r-z852etjo      94d38db32a7d4107beeed36d9e98bf06        default
INSTANCE        i-00000004      ami-00000002    server-4        server-4        running f16jeos (94d38db32a7d4107beeed36d9e98bf06, cc)      0               m1.small        2012-07-17T06:28:15.000Z        nova

把上章的Volume Group (VG)加入虚拟机：

启动iSCSI target服务：

# systemctl start tgtd.service

# systemctl enable tgtd.service

在nova里面建立volume，使用的空间就是nova.conf里面的volume_group = vg_nova_volume所定义的vg；-s为大小，单位为GB，-z为区域：

# euca-create-volume -s 10 -z nova （# nova volume-create –display_name XXX 10）

VOLUME vol-00000002 10 nova creating (94d38db32a7d4107beeed36d9e98bf06, None, None, None) 2012-07-17T07:39:46.389Z

刚开始时处于creating状态，最终处于available状态或error状态：

# euca-describe-volumes (# nova volume-list)

VOLUME vol-00000002 10 nova available (94d38db32a7d4107beeed36d9e98bf06, cc, None, None) 2012-07-17T07:39:46.000Z

把刚才建立的nova volume加载到虚拟机上，一会儿之后进入虚拟机可以看到新增加了一个块设备/dev/vdc，可以象硬盘一样格式化它来使用：

# euca-attach-volume -i i-00000004 -d /dev/vdc vol-00000002 (# nova volume-attach 1887073b-cae2-45fa-95c5-70b3d6621f79 2 /dev/vdc)

看到刚才的volume附加到了某个虚拟机：

# euca-describe-volumes
VOLUME vol-00000002 10 nova in-use (94d38db32a7d4107beeed36d9e98bf06, cc, i-00000004[cc], /dev/vdc) 2012-07-17T07:39:46.000Z

# nova volume-list

# nova volume-show 2
+———————+——————————————————————————————————————–+
|       Property      |                                                       Value                                                        |
+———————+——————————————————————————————————————–+
| attachments         | [{u’device’: u’/dev/vdc’, u’server_id’: u’1887073b-cae2-45fa-95c5-70b3d6621f79′, u’id’: u’2′, u’volume_id’: u’2′}] |
| availability_zone   | nova                                                                                                               |
| created_at          | 2012-07-17 07:39:46                                                                                                |
| display_description | None                                                                                                               |
| display_name        | None                                                                                                               |
| id                  | 2                                                                                                                  |
| metadata            | {}                                                                                                                 |
| size                | 10                                                                                                                 |
| snapshot_id         | None                                                                                                               |
| status              | in-use                                                                                                             |
| volume_type         | None                                                                                                               |
+———————+——————————————————————————————————————–+

使用lvscan可以看到建立的逻辑卷：

# lvscan
ACTIVE ‘/dev/vg_nova_volume/volume-00000002’ [10.00 GiB] inherit

…

把逻辑卷export成了一个iSCSI的target：

# tgt-admin -s
Target 1: iqn.2010-10.org.openstack:volume-00000002
System information:
Driver: iscsi
State: ready
I_T nexus information:
LUN information:
LUN: 0
Type: controller
SCSI ID: IET 00010000
SCSI SN: beaf10
Size: 0 MB, Block size: 1
Online: Yes
Removable media: No
Prevent removal: No
Readonly: No
Backing store type: null
Backing store path: None
Backing store flags:
LUN: 1
Type: disk
SCSI ID: IET 00010001
SCSI SN: beaf11
Size: 10737 MB, Block size: 512
Online: Yes
Removable media: No
Prevent removal: No
Readonly: No
Backing store type: rdwr
Backing store path: /dev/vg_nova_volume/volume-00000002
Backing store flags:
Account information:
ACL information:
ALL

去掉刚才加入的volume：

# euca-detach-volume vol-00000002 (# nova volume-detach 1887073b-cae2-45fa-95c5-70b3d6621f79 2)

# euca-delete-volume vol-00000002 (# nova volume-delete 2)

增加浮动的public IP

设置public接口：

# openstack-config –set /etc/nova/nova.conf DEFAULT public_interface em1

# systemctl restart openstack-nova-network.service

# systemctl status openstack-nova-network.service

建立浮动ip：

# nova-manage floating create 172.31.0.224/28

# nova-manage floating list
None    172.31.0.225    None    nova    em1
None    172.31.0.226    None    nova    em1
None    172.31.0.227    None    nova    em1
None    172.31.0.228    None    nova    em1
None    172.31.0.229    None    nova    em1
None    172.31.0.230    None    nova    em1
None    172.31.0.231    None    nova    em1
None    172.31.0.232    None    nova    em1
None    172.31.0.233    None    nova    em1
None    172.31.0.234    None    nova    em1
None    172.31.0.235    None    nova    em1
None    172.31.0.236    None    nova    em1
None    172.31.0.237    None    nova    em1
None    172.31.0.238    None    nova    em1

# euca-allocate-address (# nova floating-ip-create)

ADDRESS 172.31.0.225

# euca-associate-address -i i-00000004 172.31.0.225 (# nova add-floating-ip 1887073b-cae2-45fa-95c5-70b3d6621f79 172.31.0.225)

ADDRESS 172.31.0.225 i-00000004

# nova floating-ip-list
+————–+————————————–+———–+——+
| Ip | Instance Id | Fixed Ip | Pool |
+————–+————————————–+———–+——+
| 172.31.0.225 | 1887073b-cae2-45fa-95c5-70b3d6621f79 | 10.25.1.5 | nova |
+————–+————————————–+———–+——+

# euca-describe-instances
RESERVATION     r-nslxocfx      94d38db32a7d4107beeed36d9e98bf06        default
INSTANCE        i-00000003      ami-00000001    server-3        server-3        running f16jeos (94d38db32a7d4107beeed36d9e98bf06, cc)      0               m1.small        2012-07-17T02:13:00.000Z        nova
RESERVATION     r-dib7miiv      94d38db32a7d4107beeed36d9e98bf06        default
INSTANCE        i-00000002      ami-00000001    f16jeos-vm      f16jeos-vm      running f16jeos (94d38db32a7d4107beeed36d9e98bf06, cc)      0               m1.small        2012-07-16T10:41:51.000Z        nova
RESERVATION     r-z852etjo      94d38db32a7d4107beeed36d9e98bf06        default
INSTANCE        i-00000004      ami-00000002    172.31.0.225    server-4        running f16jeos (94d38db32a7d4107beeed36d9e98bf06, cc)      0               m1.small        2012-07-17T06:28:15.000Z        nova

# ping 172.31.0.225

# ssh -i f16jeos.priv root@172.31.0.225

# euca-disassociate-address 172.31.0.225

# euca-release-address 172.31.0.225

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