Gearman drives me crazy. I know all the tutorials all the presentations all the How tos but i’m not getting the Information i need.
My plan
I have one client who sends the jobs to the one job-server which is on the localhost. On this Server ( Home-Server ) runs the Website and the DB. Now i have two ( later more Worker-Server ) which we will call W1 and W2. At these Servers the hard work should be done and they should get the Jobs from the Home-Server where Gearman-Job-Server is installed. The Jobs are synchroun, which means that the client waits until the Tasks gets finished.
But I dont know how to do this. Every tutorial i find only told me how to set up Gearman when Clients and Workers are running on the same Machine.
On the Home-Server i installed gearman-job-server and the PHP gearman API with PECL.
At my clients which i handle with supervisord i call:
$gmc = new GearmanClient();
$gmc->addServer();
Which should send the Tasks to the localhost Job-Server which should get than to one of the two free Worker-Server. Right?
At the worker.php on thw Worker-Server W1 and W2 – which get also handled with supervisord – the following is written
$gmworker= new GearmanWorker();
$gmworker->addServer('Home-Server-IP', 4730);
Now the Worker-Server should get the Tasks from the Home-Server? Do I have to install gearman-job-server at W1 and W2 or is the PECL PHP Gearman API everything i need? And do i have to configure the Worker-Server?
I really hope you can explain these questions to me, that i can understand Gearman.
Some more Information:
When I tipe at Home-Server
gearmand -vvv -u root --listen=127.0.0.1
Output is just:
- INFO Starting up
- INFO Listening on 127.0.0.1:4730 (6)
- INFO Creating wakeup pipe
- INFO Creating IO thread wakeup pipe
- INFO Adding event for listening socket (6)
- INFO Adding event for wakeup pipe
- INFO Entering main event loop
After the last line the shell isnt doing anything more. I even cant tipe a new command.
Even more Infos.
I checked that Gearmand is running at the Home-Server.
ps -e|grep gearman
Output:
- 1460 ? 00:00:00 gearmand
When i now give the command on the Worker-Server
/usr/sbin/gearmand -u root -vvv --listen=Home-Server-IP
I got following Error.
- INFO Starting up
- FATAL _listen_init:bind:99
- INFO Shutdown complete
I really did nott get whats going wrong with my application.
What version of gearman are you using? The output of the error message makes me think it is quite old.
Why are you trying to run it as root?