問題二

1. quantum-dhcp 啟動失敗。
   

   [root@kvm4 ~(keystone_quantum)]# /etc/init.d/quantum-dhcp-agent restart
   Stopping quantum-dhcp-agent:                               [  OK  ]
   Starting quantum-dhcp-agent:                               [  OK  ]
   [root@kvm4 ~(keystone_quantum)]# egrep 'ERROR|CRITICAL' /var/log/quantum/dhcp-agent.log 
   2015-04-12 15:35:07    ERROR [quantum.agent.dhcp_agent] Unable to enable dhcp.
   2015-04-12 15:35:15    ERROR [quantum.agent.dhcp_agent] Unable to enable dhcp.
   

2. 解決方式：安裝 kernel-2.6.32-358.114.1.openstack。
   

   [root@kvm4 ~(keystone_quantum)]# yum install -y kernel iproute \
   --enablerepo=openstack && reboot
   
   [root@kvm4 ~]# source keystonerc_quantum
   [root@kvm4 ~(keystone_quantum)]# rm /var/log/quantum/dhcp-agent.log 
   rm: remove regular file `/var/log/quantum/dhcp-agent.log'? y
   [root@kvm4 ~(keystone_quantum)]# /etc/init.d/quantum-dhcp-agent restart
   Stopping quantum-dhcp-agent:                               [  OK  ]
   Starting quantum-dhcp-agent:                               [  OK  ]
   [root@kvm4 ~(keystone_quantum)]# egrep 'ERROR|CRITICAL' /var/log/quantum/dhcp-agent.log