OpenStack常见问题

Maximum number of ports exceeded 最大ports限制

查看 neutron quota-show nova absolute-limits openstack quota show openstack quota set --ports 50000 <project/class> openstack quota set --networks 50 jgcloud_bjdz

LDAP 进程

systemctl restart nslcd.service

删除Libvirt的default默认网卡信息

virsh net-destroy default && virsh net-undefine default

开启网卡多队列

hw_qemu_guest_agent='yes' # agent hw_vif_multiqueue_enabled='true' openstack image set 0f3b6603-1d98-4d28-90cb-5cf5fe95d271 --property hw_qemu_guest_agent=yes --property hw_vif_multiqueue_enabled=true -property hw_vif_multiqueue_enabled=true 多队列

过滤显示

openstack server show 24a4039f-f92a-4fd1-abc4-15983d0165fb |grep -E -w " OS-EXT-SRV-ATTR:host| addresses| flavor| name| id" |awk '{print $4}' |sed -e 's/.example.com//g' -e 's/proint=//g' |sed -e '$!N;s/\n/\ | /g' -e '$!N;s/\n/\ | /g' -e '$!N;s/\n/\ | /g' -e '$!N;s/\n/\ | /g' |awk -F '|' '{print "|| " $5 " | " $2 " | " $3 " | " $4 " | " $1 " ||"}' || bjdz-sys-zbxsrv01 | 172.19.33.12; | 8u16g500GB | 48d82e76-211d-48ff-b40c-5d228e1b2444 | bjdz_cloud_node008_a0902-09_3224 ||

设置cpu内核数量 win系统

openstack flavor set <NAME> --property hw:cpu_sockets=2 --property hw:cpu_cores=4

设置qxl显卡

openstack image set IMG-UUID --property hw_video_model=qxl

添加可用域

openstack aggregate add host lvm bjdz_cloud_node087_a0910-08_4033.example.com openstack aggregate remove host lvm bjdz_cloud_node083_A0910-04_4029.example.com openstack aggregate create bjdz_az1_vlan128_ceph --zone bjdz_az1_vlan128

Mysql 连接过大

检查Mysql最大连接数 show variables like '%connect%'; max_connections 默认为214 如果修改了还是不行，修改启动文件 vim /usr/lib/systemd/system/mariadb.service 增加： [Service] ... LimitNOFILE=65535 LimitNPROC=65535 ... systemctl daemon-reload systemctl restart mariadb set GLOBAL max_connections=1000 临时设置

Cinder 删除lvm服务down

cinder-manage service remove cinder-volume 2c510cg@lvm

Cinder僵尸卷删除方法

删除数据库中的内容： cinder list edf2160e-8812-4a3e-986f-bdcd88ea0c60 #cinder 卷的UUID 查找： select id,status,display_name from volumes where id = 'edf2160e-8812-4a3e-986f-bdcd88ea0c60'; 删除： delete form volumes where id ='059321e9-3b9a-4508-86fa-d7a8531e4c27'; 设置为错误： update volumes set deleted=1 where id ='d267b2d9-24c5-4966-8f85-531188d4d5fb';

1、通过lvdisplay |grep查询cinder对应的卷地址 lvdisplay | grep "3a615ad5-5880-4b68-b1af-f9241ecd9287" 2、通过lsof | grep查询占用cinder卷的端口 lsof| grep "3a615ad5-5880-4b68-b1af-f9241ecd9287" 3、查看是否被打开 dmsetup info -c /dev/cinder-volumes/volume-3a615ad5-5880-4b68-b1af-f9241ecd9287 可以看到open为4说明它被打开了，所以remove不掉。 4、查看是谁打开 fuser -m /dev/cinder-volumes/volume-3a615ad5-5880-4b68-b1af-f9241ecd9287 5、把占用设备的进程杀掉 kill -9 58638 7、重新执行第3和4步，验证是否还有进程占用 8、通过lvremove删除相应的卷 lvremove /dev/cinder-volumes/volume-3a615ad5-5880-4b68-b1af-f9241ecd9287

创建虚拟机卡在Starting up ….

修改nova配置中将cpu模式改为 cpu_mode = none

cpu、内存和硬盘资源超配

它们默认的超配比为： • CPU: CONF.cpu_allocation_ratio = 16 • RAM: CONF.ram_allocation_ratio = 1.5 • DISK: CONF.disk_allocation_ratio = 1.0 在生产环境中的利用率建议cpu:vcpu 1:1.5 mem 1:1 disk 1:1

开机自动启动虚拟机

修改 /etc/nova.conf，添加两个选项 start_guests_on_host_boot = True resume_guests_state_on_host_boot =True 注意的是，如果使用了nova-volume，则自动启动还是有问题的。这时，需要自己写脚本，进行启动。 这两个选项在文档中没有说明，大家可以参见代码： nova/compute/manager.py: if ((expect_running and FLAGS.resume_guests_state_on_host_boot) or FLAGS.start_guests_on_host_boot): LOG.info(_(‘Rebooting instance after nova-compute restart.’), locals(), instance=instance) self.reboot_instance(context, instance[‘uuid’]) elif drv_state == power_state.RUNNING: # Hyper-V and VMWareAPI drivers will raise an exception try: net_info = self._get_instance_nw_info(context, instance) self.driver.ensure_filtering_rules_for_instance(instance, self._legacy_nw_info(net_info)) except NotImplementedError: LOG.warning(_(‘Hypervisor driver does not support ‘ ‘firewall rules’))

openstack 计算节点 virsh console 无法 登陆问题

关闭虚拟机 virsh destroy instance-000007a2 导出xml virsh dumpxml instance-000007a2 > test.xml 修改xml vim test.xml 把 <serial type='file'> <source path='/var/lib/nova/instances/1d9fa13c-ff0b-4afd-b3dc-e93b66f19a74/console.log'/> <target port='0'/> <alias name='serial0'/> </serial> <console type='file'> <source path='/var/lib/nova/instances/1d9fa13c-ff0b-4afd-b3dc-e93b66f19a74/console.log'/> <target type='serial' port='0'/> <alias name='serial0'/> </console> 修改为: <serial type='pty'> <target port='0'/> </serial> <console type='pty'> <target type='serial' port='0'/> </console> 从xml文件定义虚拟机 virsh define test.xml 启动虚拟机 virsh start instance-000007a2 登陆虚拟机 virsh console instance-000007a2

Openstack Pike Dashboard不能正常访问，出现以下错误的解决方法

# 错误日志 httpd [Fri Dec 08 11:32:48.251386 2017] [suexec:notice] [pid 79126] AH01232: suEXEC mechanism enabled (wrapper: /usr/sbin/suexec) [Fri Dec 08 11:32:48.266330 2017] [auth_digest:notice] [pid 79126] AH01757: generating secret for digest authentication ... [Fri Dec 08 11:32:48.267016 2017] [lbmethod_heartbeat:notice] [pid 79126] AH02282: No slotmem from mod_heartmonitor [Fri Dec 08 11:32:48.277801 2017] [mpm_prefork:notice] [pid 79126] AH00163: Apache/2.4.6 (CentOS) mod_wsgi/3.4 Python/2.7.5 configured -- resuming normal operations [Fri Dec 08 11:32:48.277830 2017] [core:notice] [pid 79126] AH00094: Command line: '/usr/sbin/httpd -D FOREGROUND' [Fri Dec 08 11:32:55.489711 2017] [autoindex:error] [pid 79144] [client 192.168.20.67:6612] AH01276: Cannot serve directory /var/www/html/: No matching DirectoryIndex (index.html) found, and server-generated directory index forbidden by Options directive [Fri Dec 08 11:37:59.339107 2017] [core:error] [pid 79142] [client 192.168.20.67:6611] End of script output before headers: django.wsgi # 解决方法 vim /etc/httpd/conf.d/openstack-dashboard.conf ----------------------------------- WSGIDaemonProcess dashboard WSGIProcessGroup dashboard WSGISocketPrefix run/wsgi WSGIApplicationGroup %{GLOBAL} 增加此行内容，这样就可以正常访问了 WSGIScriptAlias /dashboard /usr/share/openstack-dashboard/openstack_dashboard/wsgi/django.wsgi Alias /dashboard/static /usr/share/openstack-dashboard/static <Directory /usr/share/openstack-dashboard/openstack_dashboard/wsgi> Options All AllowOverride All Require all granted </Directory> <Directory /usr/share/openstack-dashboard/static> Options All AllowOverride All Require all granted </Directory> -------------------------------------