Openstack Folsom Centos6.3 計算節點的安裝

1. 安裝epel庫。因爲現在主要的Centos上的openstack的相關package都在epel上。

wget http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
wget http://rpms.famillecollet.com/enterprise/remi-release-6.rpm
sudo rpm -Uvh remi-release-6*.rpm epel-release-6*.rpm

注：在樓下的機器下，只需要把172.16.0.1機器/etc/yum.repos/下的文件都複製到要擴展的節點的/etc/yum.repos/目錄下即可。

2. 關閉iptables和selinux

關閉iptables

chkconfig iptables off
service iptables stop

關閉selinux或者設置爲permissive

vim /etc/sysconfig/selinux

以下是我的selinux文件

# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
#     enforcing - SELinux security policy is enforced.
#     permissive - SELinux prints warnings instead of enforcing.
#     disabled - No SELinux policy is loaded.
SELINUX=permissive
# SELINUXTYPE= can take one of these two values:
#     targeted - Targeted processes are protected,
#     mls - Multi Level Security protection.
SELINUXTYPE=targeted 

3. 設置Ntp client

你可以設置本地的ntp服務器 然後設置那個server爲你本地時間同步的server.過程如下。

yum install ntp
vim /etc/ntp.conf

在ntp.conf里加入一行 

server  your_local_ntp_server_ip

注：在樓下的MDC中，your_local_ntp_server_ip 爲172.19.1.220.  即在ntp.conf 裏添加一行 

server 172.19.1.220

4.  因爲現在的一些bug，要改下 /etc/sysctl.conf. 確保下面的三個配置如下，

net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
net.bridge.bridge-nf-call-arptables = 1

5.建一個文件  /etc/sysconfig/modules/openstack-quantum-linuxbridge.modules  內容爲

#!/bin/sh

modprobe -b bridge >/dev/null 2>&1

exit 0

6. 改變文件的權限

chmod ugo+x /etc/sysconfig/modules/openstack-quantum-linuxbridge.modules

7. 重啓，使上面的配置生效

reboot

8. 安裝openstack-utils 和dnsmasq

 yum install openstack-utils dnsmasq-utils

9. 安裝nova相關的包

yum install openstack-nova python-cinderclient

10. 更改nova.conf 和api-paste

我的nova.conf 示例

[DEFAULT]
logdir = /var/log/nova
state_path = /var/lib/nova
lock_path = /var/lib/nova/tmp
volumes_dir = /etc/nova/volumes
dhcpbridge = /usr/bin/nova-dhcpbridge
dhcpbridge_flagfile = /etc/nova/nova.conf
force_dhcp_release = True
injected_network_template = /usr/share/nova/interfaces.template
libvirt_nonblocking = True
libvirt_inject_partition = -1
network_manager = nova.network.manager.FlatDHCPManager
iscsi_helper = tgtadm
sql_connection = mysql://nova:[email protected]/nova
compute_driver = libvirt.LibvirtDriver
firewall_driver = nova.virt.libvirt.firewall.IptablesFirewallDriver
rpc_backend = nova.openstack.common.rpc.impl_qpid
rootwrap_config = /etc/nova/rootwrap.conf
auth_strategy = keystone
flat_interface = eth0
public_interface = eth0
####
flat_network_bridge=br100
fixed_range=10.0.0.0/24
network_size=256
#flat_injected=False
connection_type=libvirt
multihost=True

ec2_dmz_host=172.19.1.220 
routing_source_ip=172.19.1.220
my_ip=172.16.0.1
###

volume_api_class = nova.volume.cinder.API
enabled_apis = ec2,osapi_compute,metadata
qpid_hostname = 172.19.1.220
glance_api_servers = 172.19.1.220:9292
glance_host = 172.19.1.220
libvirt_type = qemu
#network setup
#network_api_class = nova.network.quantumv2.api.API
#quantum_admin_username = quantum
#quantum_admin_password = quantum
#quantum_admin_auth_url = http://172.19.1.220:35357/v2.0/
#quantum_auth_strategy = keystone
#quantum_admin_tenant_name = service
#quantum_url = http://172.19.1.220:9696/
#libvirt_vif_driver = nova.virt.libvirt.vif.QuantumLinuxBridgeVIFDriver
# NOVNC CONSOLE
novnc_enabled=True
novncproxy_base_url=http://155.69.146.51:6080/vnc_auto.html
xvpvncproxy_base_url = http://155.69.146.51:6081/console
#vncserver_proxyclient_address和vncserver_listen的ip要和節點ip一樣
vncserver_proxyclient_address=172.16.0.1
vncserver_listen=172.16.0.1
#########
[keystone_authtoken]
admin_tenant_name = admin
admin_user = admin
admin_password = admin
auth_host = 172.19.1.220
auth_port = 35357
auth_protocol = http
signing_dir = /tmp/keystone-signing-nova

如果要新增其他的compute節點，只需要改變三個配置。他們是

my_ip=172.16.0.1

vncserver_proxyclient_address=172.16.0.1

vncserver_listen=172.16.0.1

分別配置爲那臺機器的ip。其餘的配置都一樣。

注：對於樓下的MDC而言，直接從172.16.0.1機器的/etc/nova/nova.conf 複製這個配置文件到新機器的/etc/nova/下，然後用sed -i 命令將172.16.0.1 字符統一替換爲新機器的ip。（也可以手動更改上面提到的三個配置。將my_ip,vncserver_proxyclient_address,vncserver_listen配置爲新機器的ip）

對於api-paste.ini

openstack-config --set /etc/nova/api-paste.ini filter:authtoken admin_token your_admin_token

注：注意把your_admin_token修改爲你們在配置controller時確定的admin_token。對於樓下而言，直接複製172.16.0.1機器中的/etc/nova/api-paste.ini文件到其他機器的對應目錄下就好。

11. 更改  /etc/libvirt/qemu.conf。在末尾添加以下幾行。

clear_emulator_capabilities = 0
user = "root"
group = "root"

cgroup_device_acl = [
   "/dev/null", "/dev/full", "/dev/zero",
   "/dev/random", "/dev/urandom",
   "/dev/ptmx", "/dev/kvm", "/dev/kqemu",
   "/dev/rtc", "/dev/hpet", "/dev/net/tun",
]

注：如果你也是使用的qemu（樓下是使用的qemu，故需要以下的步驟），請添加一個超鏈接，然後重啓libvirt服務。

sudo ln -s /usr/libexec/qemu-kvm /usr/bin/qemu-system-x86_64
sudo service libvirtd restart

12. 啓動相關服務。

chkconfig libvirtd on
chkconfig messagebus on
service libvirtd start
service messagebus start
virsh net-destroy default
virsh net-autostart default --disable

啓動nova-network，nova-compute和nova-metadata-api

chkconfig openstack-nova-network on
chkconfig openstack-nova-compute on
chkconfig openstack-nova-metadata-api on
service openstack-nova-network start
service openstack-nova-compute start
service openstack-nova-metadata-api start

13. 檢驗是否成功安裝Compute節點

ps -ax | grep nova 查看下有沒有成功運行nova-compute,nova network, metadata-api 這三個進程。如果已經運行了。表示安裝就成功了。