如何通过Capistrano 2 Deployment ruby​​脚本在SSH服务器上执行php脚本

Question

I need to execute a php script on the deployment server from capistrano 2 deploy script and need to get the output in a variable. I am trying following command which is used to execute shell in ruby

result =%x[php -q #{myDeployPath}/myfile.php]

I am getting "Could not open file" error , this is because it is trying run this php on my local server from where I am deploying on the required server.I am able to execute normal "run" command on the deployment server but have no idea getting output in a variable "result".

I am able to execute this php on serevr by following command but not able to capture the output in the script back.

 run "php -q #{myDeployPath}/myfile.php"

Please help.. Thanks!!

Answer 1

How about this:

result =%x[ssh username@remote.server php -q #{myDeployPath}/myfile.php]

Some information about setting up SSH to make this possible (I posted this at https://unix.stackexchange.com/questions/112087/broadcast-or-send-machine-readable-code-to-ssh-clients/112093#112093 )

Step #1

First make sure the client box (running that Ruby) has a SSH private key set up on it: ssh-keygen .

Step #2

Then make sure the public key for said private key is on the remote computer. You need to put it at the end of a file with a name like this:

 /home/${user}/.ssh/authorized_keys

${user} is the username on the more powerful computer.

Also, make sure on the powerful computer, /home/${user}/.ssh/ has the permissions 700 ( drwx------ ), and /home/${user}/.ssh/authorized_keys has permissions 600 ( -rw------- ). Use chmod to set permissions:

$ chmod 700 /home/${user}/.ssh/
$ chmod 600 /home/${user}/.ssh/authorized_keys