Waiting for a container to be created to start it

[Thomesc]

Hi there,
I'm currently trying to create a web interface with my proxmox server with this API : https://github.com/CpuID/pve2-api-php-client, this interface is to create and configure openvz containers automaticly,
I already managed to create and start containers with the API, but I would like to make it automatic that's why I need to know when the containers is done being created so I can launch the start command.
Is there a way to catch datas such as the TASK OK we can see in the proxmox interface ?

I hope this is the right place to post and I thank you in advance for your answers.

 

[fabian]

you are probably looking for either

GET /api2/json/nodes/{node}/tasks/{upid}/status

or

GET /api2/json/nodes/{node}/tasks/{upid}/log

where upid is the task ID.

 

[Thomesc]

I was using GET /api2/json/nodes/{node}/tasks/{upid}/status to try to get some infos but the status is always the same during and after the creation,
I'm going to try with GET /api2/json/nodes/{node}/tasks/{upid}/log but I can't figure out what upid is, where can I found it for the create task ?

 

[fabian]

the UPID is contained in the response for the API call that starts the worker (i.e., the POST to "/api2/json/nodes/{node}/lxc") (vzcreate works the same, it's the same API call )

for example:

{"data":"UPID:myhost:00004D26:00044B89:57986E1F:vzrestore:50001:root@pam:","success":1}

then you can query the status with "GET /nodes/myhost/tasks/UPID:myhost:00004D26:00044B89:57986E1F:vzrestore:50001:root@pam:/status":

{
   "id" : "50001",
   "node" : "myhost",
   "pid" : 19750,
   "pstart" : 281481,
   "starttime" : 1469607455,
   "status" : "running",
   "type" : "vzrestore",
   "upid" : "UPID:myhost:00004D26:00044B89:57986E1F:vzrestore:50001:root@pam:",
   "user" : "root@pam"
}

as you can see the status is "running", so the task worker has not finished yet. after waiting a little longer, the same request returns different output:

{
   "exitstatus" : "OK",
   "id" : "50001",
   "node" : "myhost",
   "pid" : 19750,
   "pstart" : 281481,
   "starttime" : 1469607455,
   "status" : "stopped",
   "type" : "vzrestore",
   "upid" : "UPID:myhost:00004D26:00044B89:57986E1F:vzrestore:50001:root@pam:",
   "user" : "root@pam"
}

note the "exitstatus" and "status" elements.

this works for all the API calls that spawn a worker to do the actual long running task.