1、停服务
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systemctl stop neutron-server.service
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2、插入调试代码段
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import pdb;pdb.set_trace()
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代码路径 /usr/lib/python2.7/site-packages/neutron/plugins/
3、查看服务状态，手动停服务，打断点，手动启服务
systemctl status/stop neutron-server.servicepgrep neutron-serverpkill neutron-server
查看服务启动项/加载项
cat /usr/lib/systemd/system/neutron-server.service
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[root@controller ~]# cat /usr/lib/systemd/system/neutron-server.service
[Unit]
Description=OpenStack Neutron Server
After=syslog.target network.target
[Service]
Type=notify
User=neutron
ExecStart=/usr/bin/neutron-server --config-file /usr/share/neutron/neutron-dist.conf --config-dir /usr/share/neutron/server --config-file /etc/neutron/neutron.conf --config-file /etc/neutron/plugin.ini --config-dir /etc/neutron/conf.d/common --config-dir /etc/neutron/conf.d/neutron-server --log-file /var/log/neutron/server.log
PrivateTmp=true
NotifyAccess=all
KillMode=process
Restart=on-failure
TimeoutStartSec=0
[Install]
WantedBy=multi-user.target
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手动启服务[neutron]
su -s /bin/sh -c 'ExecStart' User
''替换加载项(ExecStart)，带单引号；User替换对应节点的服务的用户
4、neutron cli/web进行跟进
5、举例
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su -s /bin/sh -c '/usr/bin/neutron-server --config-file /usr/share/neutron/neutron-dist.conf --config-dir /usr/share/neutron/server --config-file /etc/neutron/neutron.conf --config-file /etc/neutron/plugin.ini --config-dir /etc/neutron/conf.d/common --config-dir /etc/neutron/conf.d/neutron-server --log-file /var/log/neutron/server.log' neutron
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