无法启动 Phusion 乘客看门狗

Question

I am trying to run rails with passenger and nginx. Nginx wont redirect to my rails app instead proceeding to its default index.html page, and I got this error:

Unable to start the Phusion Passenger watchdog because it encountered the following error during startup: Cannot create a subdirectory inside instance registry directory /tmp: No such file or directory (errno=2) (-1: Unknown error)

Answer 1

Try

echo 0 | sudo tee /proc/sys/kernel/yama/ptrace_scope
echo 1 | sudo tee /proc/sys/kernel/yama/ptrace_scope
echo 0 | sudo tee /proc/sys/kernel/yama/ptrace_scope
sudo sh -c 'echo 0 > /proc/sys/kernel/yama/ptrace_scope'
sudo sh -c 'echo 1 > /proc/sys/kernel/yama/ptrace_scope'
sudo netstat -tnlp | grep :22222

good luck!