Openstack: Too many open Files 错误解决办法

Openstack WebUI页面无法打开，页面报500错误，查看httpd->error_log日志报如下错误:[Tue Apr 02 14:01:05.658276 2019] [:error] [pid 9245] File “/usr/lib/python2.7/site-packages/requests/sessions.py”, line 518, in request[Tue Apr 02 14:01:05.658280 2019] [:error] [pid 9245] File “/usr/lib/python2.7/site-packages/requests/sessions.py”, line 639, in send[Tue Apr 02 14:01:05.658284 2019] [:error] [pid 9245] File “/usr/lib/python2.7/site-packages/requests/adapters.py”, line 438, in send[Tue Apr 02 14:01:05.658287 2019] [:error] [pid 9245] File “/usr/lib/python2.7/site-packages/requests/packages/urllib3/connectionpool.py”, line 588, in urlopen[Tue Apr 02 14:01:05.658291 2019] [:error] [pid 9245] File “/usr/lib/python2.7/site-packages/requests/packages/urllib3/connectionpool.py”, line 241, in _get_conn[Tue Apr 02 14:01:05.658296 2019] [:error] [pid 9245] File “/usr/lib/python2.7/site-packages/requests/packages/urllib3/util/connection.py”, line 27, in is_connection_dropped[Tue Apr 02 14:01:05.658300 2019] [:error] [pid 9245] File “/usr/lib/python2.7/site-packages/requests/packages/urllib3/util/wait.py”, line 33, in wait_for_read[Tue Apr 02 14:01:05.658304 2019] [:error] [pid 9245] File “/usr/lib/python2.7/site-packages/requests/packages/urllib3/util/wait.py”, line 22, in _wait_for_io_events[Tue Apr 02 14:01:05.658308 2019] [:error] [pid 9245] File “/usr/lib/python2.7/site-packages/requests/packages/urllib3/util/selectors.py”, line 581, in DefaultSelector[Tue Apr 02 14:01:05.658312 2019] [:error] [pid 9245] File “/usr/lib/python2.7/site-packages/requests/packages/urllib3/util/selectors.py”, line 394, in init[Tue Apr 02 14:01:05.658316 2019] [:error] [pid 9245] IOError: [Errno 24] Too many open files解决方式：修改操作系统打开的文件数；登录到Controller节点，执行:[root@controller ~]# ulimit -acore file size (blocks, -c) 0data seg size (kbytes, -d) unlimitedscheduling priority (-e) 0file size (blocks, -f) unlimitedpending signals (-i) 60587max locked memory (kbytes, -l) 64max memory size (kbytes, -m) unlimitedopen files (-n) 1024pipe size (512 bytes, -p) 8POSIX message queues (bytes, -q) 819200real-time priority (-r) 0stack size (kbytes, -s) 8192cpu time (seconds, -t) unlimitedmax user processes (-u) 60587virtual memory (kbytes, -v) unlimitedfile locks (-x) unlimited系统默认设置为1024。使用命令查看当前打开文件数:[root@controller ~]# lsof | wc -l174911修改vim /etc/security/limits.conf，在文件最后加入如下信息：* soft nofile 1024000* hard nofile 1024000*表示所有用户，修改后重启服务器，配置生效。