我正在使用带有 apache 的乘客来运行我的 ruby 应用程序。我注意到乘客不时崩溃（apache 仍在工作），我需要手动重新启动 apache 以使其再次工作。
查看日志让我觉得它发生在 apache 更改日志文件时（存档当前文件并创建一个新文件）。这是tail -Ftha apache 错误日志文件的样子：
tail: ‘/var/log/apache2/error.log’ has become inaccessible: No such file or directory
tail: ‘/var/log/apache2/error.log’ has appeared; following end of new file
[ 2013-10-06 05:05:27.2678 10498/7f3f0cf82740 agents/Watchdog/Main.cpp:459 ]: Options: { 'analytics_log_user' => 'nobody', 'default_group' => 'nogroup', 'default_python' => 'python', 'default_ruby' => '/usr/bin/ruby1.9.1', 'default_user' => 'nobody', 'log_level' => '0', 'max_instances_per_app' => '0', 'max_pool_size' => '6', 'passenger_root' => '/var/lib/gems/1.9.1/gems/passenger-4.0.14', 'pool_idle_time' => '300', 'temp_dir' => '/tmp', 'union_station_gateway_address' => 'gateway.unionstationapp.com', 'union_station_gateway_port' => '443', 'user_switching' => 'true', 'web_server_pid' => '18659', 'web_server_type' => 'apache', 'web_server_worker_gid' => '1000', 'web_server_worker_uid' => '1001' }
[Sun Oct 06 05:05:27 2013] [error] *** Passenger could not be initialized because of this error: Unable to start the Phusion Passenger watchdog because it encountered the following error during startup: Tried to reuse existing server instance directory /tmp/passenger.1.0.18659, but it has wrong permissions
[Sun Oct 06 05:05:27 2013] [notice] Apache/2.2.22 (Ubuntu) PHP/5.4.9-4ubuntu2.2 Phusion_Passenger/4.0.14 configured -- resuming normal operations
- 该消息提到一个文件的
/tmp权限错误，为什么他们错了？他们应该是什么？如何使它们正确？ - 最后一条消息“恢复正常操作”似乎也是错误的，因为乘客倒下了。它是一个错误吗？这是什么意思？
- 我应该怎么做才能防止这种情况发生？