glance无法正常启动

笔者日前部署openstack-ocata遇到一坑 glance服务无法正常启动
首先就是服务正常使用

然后好好的，好好的 突然之间glance就不嫩用了！
查一下是服务没有启动，手动启动一下，发现提示服务重启次数太多，然后就自己挂了

● openstack-glance-api.service - OpenStack Image Service (code-named Glance) API server
Loaded: loaded (/usr/lib/systemd/system/openstack-glance-api.service; enabled; vendor preset: disabled)
Active: failed (Result: start-limit) since Thu 2017-07-13 15:12:24 CST; 313ms ago
Process: 81979 ExecStart=/usr/bin/glance-api (code=exited, status=1/FAILURE)
Main PID: 81979 (code=exited, status=1/FAILURE)

Jul 13 15:12:24 node01 systemd[1]: Unit openstack-glance-api.service entered failed state.
Jul 13 15:12:24 node01 systemd[1]: openstack-glance-api.service failed.
Jul 13 15:12:24 node01 systemd[1]: openstack-glance-api.service holdoff time over, scheduling restart.
Jul 13 15:12:24 node01 systemd[1]: start request repeated too quickly for openstack-glance-api.service
Jul 13 15:12:24 node01 systemd[1]: Failed to start OpenStack Image Service (code-named Glance) API server.
Jul 13 15:12:24 node01 systemd[1]: Unit openstack-glance-api.service entered failed state.
Jul 13 15:12:24 node01 systemd[1]: openstack-glance-api.service failed.

● openstack-glance-registry.service - OpenStack Image Service (code-named Glance) Registry server
Loaded: loaded (/usr/lib/systemd/system/openstack-glance-registry.service; enabled; vendor preset: disabled)
Active: failed (Result: start-limit) since Thu 2017-07-13 15:12:24 CST; 319ms ago
Process: 81980 ExecStart=/usr/bin/glance-registry (code=exited, status=1/FAILURE)
Main PID: 81980 (code=exited, status=1/FAILURE)

Jul 13 15:12:24 node01 systemd[1]: Unit openstack-glance-registry.service entered failed state.
Jul 13 15:12:24 node01 systemd[1]: openstack-glance-registry.service failed.
Jul 13 15:12:24 node01 systemd[1]: openstack-glance-registry.service holdoff time over, scheduling restart.
Jul 13 15:12:24 node01 systemd[1]: start request repeated too quickly for openstack-glance-registry.service
Jul 13 15:12:24 node01 systemd[1]: Failed to start OpenStack Image Service (code-named Glance) Registry server.
Jul 13 15:12:24 node01 systemd[1]: Unit openstack-glance-registry.service entered failed state.
Jul 13 15:12:24 node01 systemd[1]: openstack-glance-registry.service failed.

于是

#grep 'fail' /lib/systemd/system/openstack-glance-api.service
Restart=on-failure
#sed -i '/fail/ s/^/#/g' /lib/systemd/system/openstack-glance-api.service
#systemctl daemon-reload

再次重启服务，报错信息变成

● openstack-glance-api.service - OpenStack Image Service (code-named Glance) API server
Loaded: loaded (/usr/lib/systemd/system/openstack-glance-api.service; enabled; vendor preset: disabled)
Active: failed (Result: exit-code) since Thu 2017-07-13 15:18:42 CST; 10s ago
Process: 83673 ExecStart=/usr/bin/glance-api (code=exited, status=1/FAILURE)
Main PID: 83673 (code=exited, status=1/FAILURE)
Jul 13 15:18:41 node01 systemd[1]: Started OpenStack Image Service (code-named Glance) API server.
Jul 13 15:18:41 node01 systemd[1]: Starting OpenStack Image Service (code-named Glance) API server...
Jul 13 15:18:42 node01 glance-api[83673]: ERROR: Unable to locate paste config file for glance-api.
Jul 13 15:18:42 node01 systemd[1]: openstack-glance-api.service: main process exited, code=exited, status=1/FAILURE
Jul 13 15:18:42 node01 systemd[1]: Unit openstack-glance-api.service entered failed state.
Jul 13 15:18:42 node01 systemd[1]: openstack-glance-api.service failed.
● openstack-glance-registry.service - OpenStack Image Service (code-named Glance) Registry server
Loaded: loaded (/usr/lib/systemd/system/openstack-glance-registry.service; enabled; vendor preset: disabled)
Active: failed (Result: exit-code) since Thu 2017-07-13 15:18:42 CST; 10s ago
Process: 83674 ExecStart=/usr/bin/glance-registry (code=exited, status=1/FAILURE)
Main PID: 83674 (code=exited, status=1/FAILURE)
Jul 13 15:18:41 node01 systemd[1]: Started OpenStack Image Service (code-named Glance) Registry server.
Jul 13 15:18:41 node01 systemd[1]: Starting OpenStack Image Service (code-named Glance) Registry server...
Jul 13 15:18:42 node01 glance-registry[83674]: ERROR: Unable to locate paste config file for glance-registry.
Jul 13 15:18:42 node01 systemd[1]: openstack-glance-registry.service: main process exited, code=exited, status=1/FAILURE
Jul 13 15:18:42 node01 systemd[1]: Unit openstack-glance-registry.service entered failed state.
Jul 13 15:18:42 node01 systemd[1]: openstack-glance-registry.service failed.

发现无法找到paste文件，再次回头来看看glance-api.conf 发现这么一行

#If the paste configuration file is not found, the service will not start.
#
……………………
#  (string value)
#config_file = glance-api-paste.ini

那么找找这个文件呢

#rpm -ql openstack-glance|grep glance-api-paste.ini > /dev/null
# echo $?
1

木有，煤油，麻油！！

就是找不到了哦！难怪找不到
于是乎

ln -s/usr/share/glance/glance-api-dist-paste.ini   /usr/share/glance/glance-api-paste.ini
ln -s/usr/share/glance/glance-registry-dist-paste.ini  /usr/share/glance/glance-registry-paste.ini

再次重启服务，一切正常了>>>>>