SSH remote control question Post: 302520618

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Operating Systems Linux SSH remote control question Post 302520618 by mgsolid on Sunday 8th of May 2011 06:29:27 PM

05-08-2011

Registered User

SSH remote control question

I am pretty new to linux so forgive me for asking a basic question :P

I am using SSH to control 40 machines. What i am trying to do is remotely bash a shell script on each machine. I am using a for loop to bash every script, code as follows.

code in host machine runallworkers.sh:

Code:

...

i=1

for each $ip[] in ip[]   #just for example, i have saved all ips in a array ip[]
do
SSH -i aaa.rsa ubuntu@${ip[]} 'bash /home/ubuntu/program/runworker.sh'
echo "running worker in node $i"
let i++
done
...

code in each runworker.sh in each worker machine:

Code:

./worker.pl 7000 &
#worker.pl is a socket server program. it takes the parameter 7000 to run. it listens to port 7000

i can manually bash the runworker.sh file in each worker machine. So the worker.pl file should work fine. I can use the for loop to do other stuff on each node, so the loop should work fine too.
But the problem occurs when i run the script in the host machine, it stop responding after the first bashing, so the loop can not go on... the screen shows something like this:

Code:

ubuntu@1.1.1.1:~$ bash runallworkers.sh
running worker in node 1

please someone help me out...
Thanks in advance!!

mgsolid

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LEARN ABOUT DEBIAN

gearman_worker_set_workload_free_fn

GEARMAN_WORKER_SET_WORKLOAD_FREE_FN(3)				     Gearmand				    GEARMAN_WORKER_SET_WORKLOAD_FREE_FN(3)

NAME

       gearman_worker_set_workload_free_fn - Gearmand Documentation, http://gearman.info/

SYNOPSIS

       #include <libgearman/gearman.h>

       gearman_worker_st

       gearman_worker_set_task_context_free_fn

       int gearman_worker_timeout(gearman_worker_st *worker)

       void gearman_worker_set_timeout(gearman_worker_st *worker, int timeout)

       void *gearman_worker_context(const gearman_worker_st *worker)

       void gearman_worker_set_context(gearman_worker_st *worker, void *context)

       void gearman_worker_set_workload_malloc_fn(gearman_worker_st *worker, gearman_malloc_fn *function, void *context)

       void gearman_worker_set_workload_free_fn(gearman_worker_st *worker, gearman_free_fn *function, void *context)

       gearman_return_t gearman_worker_wait(gearman_worker_st *worker)

       gearman_return_t gearman_worker_register(gearman_worker_st *worker, const char *function_name, uint32_t timeout)

       gearman_return_t gearman_worker_unregister(gearman_worker_st *worker, const char *function_name)

       gearman_return_t gearman_worker_unregister_all(gearman_worker_st *worker)

       gearman_job_st *gearman_worker_grab_job(gearman_worker_st *worker, gearman_job_st *job, gearman_return_t *ret_ptr)

       void gearman_job_free_all(gearman_worker_st *worker)

       bool gearman_worker_function_exist(gearman_worker_st *worker, const char *function_name, size_t function_length)

       gearman_return_t gearman_worker_work(gearman_worker_st *worker)

       Link with -lgearman

DESCRIPTION

       gearman_worker_st is used for worker communication with the server.

       gearman_worker_context() and gearman_worker_set_context() can be used to store an arbitrary object for the user.

       gearman_worker_set_task_context_free_fn() sets a trigger that will be called when a gearman_task_st is released.

       gearman_worker_timeout() and gearman_worker_set_timeout() get and set the current timeout value, in milliseconds, for the worker.

       gearman_worker_function_exist() is used to determine if a given worker has a specific function.

       Normally   malloc(3)   and   free(3)   are  used  for  allocation  and  releasing  workloads.  gearman_worker_set_workload_malloc_fn()  and
       gearman_worker_set_workload_free_fn() can be used to replace these with custom functions.

       If you need to remove a function from the server you can call either gearman_worker_unregister_all()  to  remove  all  functions  that  the
       worker has told the gearmand server about, or you can use gearman_worker_unregister() to remove just a single function.

RETURN

       Various

HOME

       To find out more information please check: http://gearman.info/

SEE ALSO

       gearmand(8) libgearman(3)

AUTHOR

       Data Differential http://www.datadifferential.com/

COPYRIGHT

       2012, Data Differential, http://www.datadifferential.com/

0.33								   May 04, 2012 			    GEARMAN_WORKER_SET_WORKLOAD_FREE_FN(3)

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gearman_worker_set_workload_free_fn