devstack

怼烎@ 2022-08-07 08:51 199阅读 0赞

# 1 快速安装 #

**1 系统硬件**

系统版本：Ubuntu 14.04 (Trusty)，安装版本的minimal version

[stack@ubuntu:~$][stack_ubuntu]cat /etc/issue  
Ubuntu 14.04.2 LTS \\n \\l

查看硬件是否支持虚拟化

命令：grep --color vmx /proc/cpuinfo    \#Intel (Intel-VT)  
命令：grep --color svm /proc/cpuinfo    \#AMD (AMD-V)

localadmin@testopenstack:~/devstack$ grep --color vmx /proc/cpuinfo
    flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge 
    nopl xtopology nonstop_tsc aperfmperf pni ds_cpl vmx smx

服务器个数

单结点服务器，双网卡

**2 下载devstack**

下载：git clone [ https://git.openstack.org/openstack-dev/devstack][https_git.openstack.org_openstack-dev_devstack]

stack@ubuntu:~$ git clone  https://git.openstack.org/openstack-dev/devstack
    The program 'git' is currently not installed. You can install it by typing:
    sudo apt-get install git
    stack@ubuntu:~$ sudo apt-get install git
    [sudo] password for stack:
    Reading package lists... Done
    Building dependency tree
    Reading state information... Done
    E: Unable to locate package git

无法找到git时，使用命令sudo apt-get update更新

stack@ubuntu:~$ sudo apt-get update

**3 配置local.conf**

stack@ubuntu:~$ cd devstack/
    stack@ubuntu:~/devstack$ cp samples/local.conf .
    stack@ubuntu:~/devstack$ cat local.conf
    # Sample ``local.conf`` for user-configurable variables in ``stack.sh``
    
    # NOTE: Copy this file to the root ``devstack`` directory for it to
    # work properly.
    
    # ``local.conf`` is a user-maintained settings file that is sourced from ``stackrc``.
    # This gives it the ability to override any variables set in ``stackrc``.
    # Also, most of the settings in ``stack.sh`` are written to only be set if no
    # value has already been set; this lets ``local.conf`` effectively override the
    # default values.
    
    # This is a collection of some of the settings we have found to be useful
    # in our DevStack development environments. Additional settings are described
    # in http://devstack.org/local.conf.html
    # These should be considered as samples and are unsupported DevStack code.
    
    # The ``localrc`` section replaces the old ``localrc`` configuration file.
    # Note that if ``localrc`` is present it will be used in favor of this section.
    [[local|localrc]]
    
    # Minimal Contents
    # ----------------
    FLOATING_RANGE=192.168.1.224/27
    FIXED_RANGE=10.11.12.0/24
    FIXED_NETWORK_SIZE=256
    FLAT_INTERFACE=eth0
    
    # While ``stack.sh`` is happy to run without ``localrc``, devlife is better when
    # there are a few minimal variables set:
    
    # If the ``SERVICE_TOKEN`` and ``*_PASSWORD`` variables are not set
    # here you will be prompted to enter values for them by ``stack.sh``
    # and they will be added to ``local.conf``.
    SERVICE_TOKEN=azertytokenzhf
    ADMIN_PASSWORD=123456
    MYSQL_PASSWORD=$ADMIN_PASSWORD
    RABBIT_PASSWORD=$ADMIN_PASSWORD
    SERVICE_PASSWORD=$ADMIN_PASSWORD
    
    # ``HOST_IP`` should be set manually for best results if the NIC configuration
    # of the host is unusual, i.e. ``eth1`` has the default route but ``eth0`` is the
    # public interface.  It is auto-detected in ``stack.sh`` but often is indeterminate
    # on later runs due to the IP moving from an Ethernet interface to a bridge on
    # the host. Setting it here also makes it available for ``openrc`` to include
    # when setting ``OS_AUTH_URL``.
    # ``HOST_IP`` is not set by default.
    #HOST_IP=w.x.y.z
    
    
    # Logging
    # -------
    
    # By default ``stack.sh`` output only goes to the terminal where it runs.  It can
    # be configured to additionally log to a file by setting ``LOGFILE`` to the full
    # path of the destination log file.  A timestamp will be appended to the given name.
    LOGFILE=$DEST/logs/stack.sh.log
    
    # Old log files are automatically removed after 7 days to keep things neat.  Change
    # the number of days by setting ``LOGDAYS``.
    LOGDAYS=2
    
    # Nova logs will be colorized if ``SYSLOG`` is not set; turn this off by setting
    # ``LOG_COLOR`` false.
    #LOG_COLOR=False
    
    
    # Using milestone-proposed branches
    # ---------------------------------
    
    # Uncomment these to grab the milestone-proposed branches from the repos:
    #CINDER_BRANCH=milestone-proposed
    #GLANCE_BRANCH=milestone-proposed
    #HORIZON_BRANCH=milestone-proposed
    #KEYSTONE_BRANCH=milestone-proposed
    #KEYSTONECLIENT_BRANCH=milestone-proposed
    #NOVA_BRANCH=milestone-proposed
    #NOVACLIENT_BRANCH=milestone-proposed
    #NEUTRON_BRANCH=milestone-proposed
    #SWIFT_BRANCH=milestone-proposed
    
    
    # Swift
    # -----
    
    # Swift is now used as the back-end for the S3-like object store. If Nova's
    # objectstore (``n-obj`` in ``ENABLED_SERVICES``) is enabled, it will NOT
    # run if Swift is enabled. Setting the hash value is required and you will
    # be prompted for it if Swift is enabled so just set it to something already:
    #SWIFT_HASH=66a3d6b56c1f479c8b4e70ab5c2000f5
    
    # For development purposes the default of 3 replicas is usually not required.
    # Set this to 1 to save some resources:
    #SWIFT_REPLICAS=1
    
    # The data for Swift is stored by default in (``$DEST/data/swift``),
    # or (``$DATA_DIR/swift``) if ``DATA_DIR`` has been set, and can be
    # moved by setting ``SWIFT_DATA_DIR``. The directory will be created
    # if it does not exist.
    #SWIFT_DATA_DIR=$DEST/data
    
    # Tempest
    # -------
    
    # Install the tempest test suite
    #enable_service tempest

**4 安装：./stack.sh**

使用默认用户demo：

localadmin@ubuntu:~/devstack$ source openrc
    localadmin@ubuntu:~/devstack$ source openrc demo demo

使用默认用户admin：

localadmin@ubuntu:~/devstack$ source openrc admin admin

**5 重启后执行stack.sh脚本重新部署OpenStack环境**

由于采用源码安装，没有开机启动脚本，所以需要手工启动相关的服务，最简单的方式，就是再运行stack.sh脚本.  
缺点就是所有的设置，数据都清空。在local.conf配置文件中设置OFFLINE(stackrc文件中)以使stack.sh运行时不联网：  
OFFLINE = true

**6 重新安装**

安装失败后，调用unstack.sh和clean.sh清理相关服务。

要重新安装时，在local.conf配置文件中设置RECLONE(functions-common中)，以更新每个repo:

RECLONE=yes    #A clean install every time

# 2 与openstack服务交互 #

devstack使用screen来运行各个服务，默认screen名是stack，在stackrc文件中配置：

# Whether to use 'dev mode' for screen windows. Dev mode works by
    # stuffing text into the screen windows so that a developer can use
    # ctrl-c, up-arrow, enter to restart the service. Starting services
    # this way is slightly unreliable, and a bit slower, so this can
    # be disabled for automated testing by setting this value to False.
    USE_SCREEN=True
    SCREEN_NAME=${SCREEN_NAME:-stack}

screen中的openstack服务运行在单一模式(standalone mode)

访问：

localadmin@ubuntu:~/devstack$ screen -x stack

rejoin:

localadmin@ubuntu:~/devstack$ ./rejoin-stack.sh

**重启screen中的各服务**

1 用ctrl + a + "选择相应的服务，并进入;

2 用ctrl + c取消选中的服务，再重新运行。

**销毁screen: $ ./unstack.sh**

# 3 Neutron网络    #

[https://wiki.openstack.org/wiki/NeutronDevstack][https_wiki.openstack.org_wiki_NeutronDevstack]  
单结点，在local.conf中配置如下:

[[local|localrc]]
    disable_service n-net
    enable_service q-svc
    enable_service q-agt
    enable_service q-dhcp
    enable_service q-l3
    enable_service q-meta
    # Optional, to enable tempest configuration as part of devstack
    enable_service tempest

多结点：

controller node中的localrc:

disable_service n-net
    enable_service q-svc
    enable_service q-agt
    enable_service q-dhcp
    enable_service q-l3
    enable_service q-meta
    enable_service neutron

compute nodes中的localrc:

ENABLED_SERVICES=n-cpu,rabbit,neutron,q-agt
    SERVICE_HOST=[IP of controller node]
    MYSQL_HOST=$SERVICE_HOST
    RABBIT_HOST=$SERVICE_HOST
    Q_HOST=$SERVICE_HOST

# 4 Best Localrc #

# Misc
    DATABASE_PASSWORD=password
    ADMIN_PASSWORD=password
    SERVICE_PASSWORD=password
    SERVICE_TOKEN=password
    RABBIT_PASSWORD=password
    
    # Reclone each time
    RECLONE=yes
    
    ## For Keystone
    KEYSTONE_TOKEN_FORMAT=PKI
    
    ## For Swift
    SWIFT_REPLICAS=1
    SWIFT_HASH=011688b44136573e209e
    
    ## For Ceph
    ENABLED_SERVICES+=,ceph
    CEPH_LOOPBACK_DISK_SIZE=10G
    CEPH_CONF=/etc/ceph/ceph.conf
    CEPH_REPLICAS=1
    GLANCE_CEPH_USER=glancy
    GLANCE_CEPH_POOL=imajeez
    CINDER_DRIVER=ceph
    CINDER_CEPH_USER=cindy
    CINDER_CEPH_POOL=volumeuh
    CINDER_CEPH_UUID=6d52eb95-12f3-47e3-9eb9-0c1fe4142426
    CINDER_BAK_CEPH_POOL=backeups
    CINDER_BAK_CEPH_USER=cind-backeups
    CINDER_ENABLED_BACKENDS=ceph,lvm
    NOVA_CEPH_POOL=vmz
    
    # Enable Logging
    LOGFILE=/opt/stack/logs/stack.sh.log
    VERBOSE=True
    LOG_COLOR=True
    SCREEN_LOGDIR=/opt/stack/logs
    
    # Pre-requisite
    ENABLED_SERVICES=rabbit,mysql,key
    
    ## If you want ZeroMQ instead of RabbitMQ (don't forget to un-declare 'rabbit' from the pre-requesite)
    ENABLED_SERVICES+=,-rabbit,-qpid,zeromq
    
    ## If you want Qpid instead of RabbitMQ (don't forget to un-declare 'rabbit' from the pre-requesite)
    ENABLED_SERVICES+=,-rabbit,-zeromq,qpid
    
    # Horizon (Dashboard UI) - (always use the trunk)
    ENABLED_SERVICES+=,horizon
    HORIZON_REPO=https://github.com/openstack/horizon
    HORIZON_BRANCH=master
    
    # Nova - Compute Service
    ENABLED_SERVICES+=,n-api,n-crt,n-obj,n-cpu,n-cond,n-sch
    IMAGE_URLS+=",https://launchpad.net/cirros/trunk/0.3.0/+download/cirros-0.3.0-x86_64-disk.img"
    
    # Nova Network - If you don't want to use Neutron and need a simple network setup (old good stuff!)
    ENABLED_SERVICES+=,n-net
    
    ## Nova Cells
    ENABLED_SERVICES+=,n-cell
    
    # Glance - Image Service
    ENABLED_SERVICES+=,g-api,g-reg
    
    # Swift - Object Storage
    ENABLED_SERVICES+=,s-proxy,s-object,s-container,s-account
    
    # Neutron - Networking Service
    # If Neutron is not declared the old good nova-network will be used
    ENABLED_SERVICES+=,q-svc,q-agt,q-dhcp,q-l3,q-meta,neutron
    
    ## Neutron - Load Balancing
    ENABLED_SERVICES+=,q-lbaas
    
    ## Neutron - VPN as a Service
    ENABLED_SERVICES+=,q-vpn
    
    ## Neutron - Firewall as a Service
    ENABLED_SERVICES+=,q-fwaas
    
    # VLAN configuration
    Q_PLUGIN=ml2
    ENABLE_TENANT_VLANS=True
    
    # GRE tunnel configuration
    Q_PLUGIN=ml2
    ENABLE_TENANT_TUNNELS=True
    
    # VXLAN tunnel configuration
    Q_PLUGIN=ml2
    Q_ML2_TENANT_NETWORK_TYPE=vxlan   
    
    # Cinder - Block Device Service
    ENABLED_SERVICES+=,cinder,c-api,c-vol,c-sch,c-bak
    
    # Heat - Orchestration Service
    ENABLED_SERVICES+=,heat,h-api,h-api-cfn,h-api-cw,h-eng
    IMAGE_URLS+=",http://fedorapeople.org/groups/heat/prebuilt-jeos-images/F17-x86_64-cfntools.qcow2"
    
    # Ceilometer - Metering Service (metering + alarming)
    ENABLED_SERVICES+=,ceilometer-acompute,ceilometer-acentral,ceilometer-collector,ceilometer-api
    ENABLED_SERVICES+=,ceilometer-alarm-notify,ceilometer-alarm-eval
    
    # Apache fronted for WSGI
    APACHE_ENABLED_SERVICES+=keystone,swift

# 5 devstack结构 #

## 5.1 local.conf ##

local.conf不随devstack发布，devstack更新时不会被覆盖。  
local.conf改进的INI格式的用户维护的配置文件，在stackrc文件中被source

### 1 格式 ###

节头：\[\[ <phase> | <config-file-name> \]\]  
    1 <phase> is one of a set of phase names defined by stack.sh

stack@ubuntu:~/devstack$ cat stack.sh | grep "# Phase"
    # Phase: local
    # Phase: source
    # Phase: pre-install
    # Phase: install
    # Phase: post-config
    # Phase: post-config
    # Phase: extra
    # Phase: extra
    # Phase: post-extra

?local - extracts localrc from local.conf before stackrc is sourced  
?pre-install - runs after the system packages are installed but before any of the source repositories are installed  
?install - runs immediately after the repo installations are complete  
?post-config - runs after the layer 2 services are configured and before they are started  
?extra - runs after services are started and before any files in extra.d are executed

2 <config-file-name> is the configuration filename  
在stack.sh上下文中，shell命令eval执行配置文件名，因此所有的环境变量可用。  
文件按顺序处理。文件路径不存在时，忽略此配置文件。  
强烈建议使用工程配置文件名，如:NOVA\_CONF

[[post-config|$NOVA_CONF]]
    [DEFAULT]
    use_syslog = True
    
    [osapi_v3]
    enabled = False
    
    #Q_PLUGIN_CONF_FILE NOT start with a / (slash) character. 
    #A slash will need to be added
    [[post-config|/$Q_PLUGIN_CONF_FILE]]
    [agent]
    tunnel_type=vxlan
    vxlan_udp_port=8472
    
    [[post-config|$NEUTRON_CONF]]
    [DEFAULT]
    tenant_network_type=vxlan

meta-section：\[\[local|localrc\]\]，  
其中的localrc配置文件如果存在，优先使用; 如果不存在，会生成.localrc.auto配置文件。

在初次运行stack.sh时，文件stackrc中调用get\_default\_host\_ip函数来检测HOST\_IP的值，  
但是在IP从网口移动到网桥时，HOST\_IP的值不确定，所以应该手工设置一下HOST\_IP，以设置  
openrc文件中的KEYSTONE\_AUTH\_HOST变量。  
HOST\_IP=192.168.128.50

openstack中的客户VMs有两种IP地址类型：  
1 fixed IPs：在vms启动时，分配给instances。实例终止时，分配的IP回收。  
2 floating IPs：用户来决定与哪个instance关联,用来为私有云中的实例提供公共IP，以便外部访问。  
两种类型的IP地地址都可以是公用的或专用的IP.  
不设floating IPs，只设fixed IPs时可以运行openstack.  
**FLOATING\_RANGE**设置成不使用的local network的一部分，以从本地访问instance。For example, if the IPs given out on your network by DHCP are 192.168.1.X - where X is between 100 and 200 you will be able to use IPs 201-254 for floating ips.  
**FIXED\_RANGE**设置instances使用的内部地址空间。  
**FLAT\_INTERFACE**连接主机和本地网的网口。两种使用情况：  
    1 单结点时，设置FLAT\_INTERFACE，以阻止nova桥接任何网口到FLAT\_NETWORK\_BRIDGE  
    2 多结点主机且使用FlatDHCP网络时。要保证此网口没有IP。

FLOATING_RANGE=192.168.1.224/27  
    FIXED_RANGE=10.11.12.0/24  
    FIXED_NETWORK_SIZE=256  
    FLAT_INTERFACE=eth0

FIXED\_RANGE和FLOATING\_RANGE网络范围不能与主机上已使用的网络重叠。  
RFC-1918 ‘private’ ranges经常被用于the local networking和Nova’s fixed and floating ranges。  
RFC-1918:Internet Assigned Numbers Authority (IANA)保留的专用网IP地址空间块：

24-bit block:     10.0.0.0        -   10.255.255.255  (10/8 prefix)
    20-bit block:     172.16.0.0      -   172.31.255.255  (172.16/12 prefix)
    16-bit block:     192.168.0.0     -   192.168.255.255 (192.168/16 prefix)

如果不设置FIXED\_RANGE，FLOATING\_RANGE和HOST\_IP，stackrc会设置默认值：

FLOATING_RANGE=${FLOATING_RANGE:-172.24.4.0/24}
    FIXED_RANGE=${FIXED_RANGE:-10.0.0.0/24}
    FIXED_NETWORK_SIZE=${FIXED_NETWORK_SIZE:-256}
    HOST_IP_IFACE=${HOST_IP_IFACE:-}
    HOST_IP=${HOST_IP:-}
    
    HOST_IP=$(get_default_host_ip $FIXED_RANGE $FLOATING_RANGE "$HOST_IP_IFACE" "$HOST_IP")

参考：[http://docs.openstack.org/developer/devstack/configuration.html][http_docs.openstack.org_developer_devstack_configuration.html]

## 5.2 stackrc ##

stackrc包含locations for the OpenStack repositories, branches to configure和其它默认配置.  
stackrc sources the \`\`localrc\`\` section of \`\`local.conf\`\`，以覆盖环境变量设置。  
**1 ENABLED\_SERVICES**:指定启动的服务，一个服务对应screen的一个tab。  
默认启动的服务：

# Keystone - nothing works without keystone
    ENABLED_SERVICES=key
    # Nova - services to support libvirt based openstack clouds
    ENABLED_SERVICES+=,n-api,n-cpu,n-net,n-cond,n-sch,n-novnc
    # Glance services needed for Nova
    ENABLED_SERVICES+=,g-api,g-reg
    # Cinder
    ENABLED_SERVICES+=,c-sch,c-api,c-vol
    # Dashboard
    ENABLED_SERVICES+=,horizon
    # Additional services
    ENABLED_SERVICES+=,rabbit,tempest,mysql,dstat

在local.conf文件中，使用\`\`enable\_service\`\`和\`\`disable\_service\`\`函数来启停相关服务。  
  
**2 Service Repos**

# compute service
    NOVA_REPO=${NOVA_REPO:-${GIT_BASE}/openstack/nova.git}
    NOVA_BRANCH=${NOVA_BRANCH:-master}

## 5.3 stack.sh ##

stack.sh是主脚本，用于安装和配置不同组合的openstack服务。  
默认的变量位于stackrc文件，

设置合适的环境变量来改变脚本的选项。  
1 export命令设置临时变量：

export DATABASE_PASSWORD=anothersecret
     ./stack.sh

2 命令行上设置：

DATABASE_PASSWORD=simple ./stack.sh

3 在local.conf中设置永久变量

[[local|localrc]]
    DATABASE_PASSWORD=anothersecret
    DATABASE_USER=hellaroot

可以不设置任何环境变量，直接运行整个脚本，这会提示输入账户密码和service token。这会在当前目录生成localrc文件，以保存设置(read\_password函数)。

因为Horizon中的Apache不服务于root用户，stack.sh必须以非root用户运行，执行$TOP\_DIR/tools/create-stack-user.sh创建帐户stack。  
过程的输出信息大致总结出了它的执行过程：  
1.下载并安装 OpenStack 运行所需要的系统软件，大概包括一些 Python 的组件、MySQL、rabbitmq-server 等。  
2.下载 OpenStack 组件，包括 nova 、keystone、glance、noVNC、horizon 等。  
3.下载并安装 OpenStack 源码所依赖的 Python 库和框架 。  
4.安装 OpenStack 各组件。  
5.启动各项服务。

参考：[http://blog.csdn.net/zhaihaifei/article/details/40893823][http_blog.csdn.net_zhaihaifei_article_details_40893823]

## 5.4 openrc ##

openrc配置登录认证信息，以使用命令行工具，如nova, glance等。  
执行：source openrc \[username\] \[tenantname\]

# Configure a set of credentials for $TENANT/$USERNAME:
    #   Set OS_TENANT_NAME to override the default tenant 'demo'
    #   Set OS_USERNAME to override the default user name 'demo'
    #   Set ADMIN_PASSWORD to set the password for 'admin' and 'demo'

参考：

官网：[http://docs.openstack.org/developer/devstack/][http_docs.openstack.org_developer_devstack]  
DevStack in 1 Minute：[http://www.sebastien-han.fr/blog/2013/08/08/devstack-in-1-minute/][http_www.sebastien-han.fr_blog_2013_08_08_devstack-in-1-minute]  
nova-network安装: [ http://networkstatic.net/installing-openstack-grizzly-with-devstack/][http_networkstatic.net_installing-openstack-grizzly-with-devstack]  
Quantum Devstack：[http://networkstatic.net/openstack-folsom-quantum-devstack-installation-tutorial/][http_networkstatic.net_openstack-folsom-quantum-devstack-installation-tutorial]  
[http://packetpushers.net/openstack-quantum-network-implementation-in-linux/][http_packetpushers.net_openstack-quantum-network-implementation-in-linux]

[stack_ubuntu]: mailto:stack@ubuntu:~$
[https_git.openstack.org_openstack-dev_devstack]: https://git.openstack.org/openstack-dev/devstack
[https_wiki.openstack.org_wiki_NeutronDevstack]: https://wiki.openstack.org/wiki/NeutronDevstack
[http_docs.openstack.org_developer_devstack_configuration.html]: http://docs.openstack.org/developer/devstack/configuration.html
[http_blog.csdn.net_zhaihaifei_article_details_40893823]: http://blog.csdn.net/zhaihaifei/article/details/40893823
[http_docs.openstack.org_developer_devstack]: http://docs.openstack.org/developer/devstack/
[http_www.sebastien-han.fr_blog_2013_08_08_devstack-in-1-minute]: http://www.sebastien-han.fr/blog/2013/08/08/devstack-in-1-minute/
[http_networkstatic.net_installing-openstack-grizzly-with-devstack]: http://networkstatic.net/installing-openstack-grizzly-with-devstack/
[http_networkstatic.net_openstack-folsom-quantum-devstack-installation-tutorial]: http://networkstatic.net/openstack-folsom-quantum-devstack-installation-tutorial/
[http_packetpushers.net_openstack-quantum-network-implementation-in-linux]: http://packetpushers.net/openstack-quantum-network-implementation-in-linux/