This allows a user to send a signal to all the processes in the
container within a single atomic action to avoid new processes being
forked off before the signal can be sent.
This is basically taking functionality that we already use being
`delete` and exposing it ok the `kill` command by adding a flag.
Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
This patch enhance the `runc delete` command as following
1) when `runc delete` without one container-id
```
$ runc delete
runc: "delete" requires a minimum of 1 argument
```
2) we can delete more containers at one command
for example:
```
$ runc list
ID PID STATUS BUNDLE CREATED
a 8490 created /mycontainer 2016-09-18T03:49:32.259760434Z
b 8520 running /mycontainer 2016-09-18T03:49:36.999299944Z
c 8535 created /mycontainer 2016-09-18T03:49:40.975277538Z
d 8549 created /mycontainer 2016-09-18T03:49:42.675282602Z
e 8562 running /mycontainer 2016-09-18T03:49:44.175400931Z
$ runc delete a b cc
cannot delete container b that is not stopped: running
container cc is not exist
$ runc list
ID PID STATUS BUNDLE CREATED
b 8520 running /mycontainer 2016-09-18T03:49:36.999299944Z
c 8535 created /mycontainer 2016-09-18T03:49:40.975277538Z
d 8549 created /mycontainer 2016-09-18T03:49:42.675282602Z
e 8562 running /mycontainer 2016-09-18T03:49:44.175400931Z
$ runc delete -f b c d e
$ runc list
ID PID STATUS BUNDLE CREATED
```
Signed-off-by: Wang Long <long.wanglong@huawei.com>
If the container's state is `created` when runc delete is called make
sure that the init is killed before deleting the on system state.
Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
There are 3 types of EXAMPLE title in manual and code:
1: "# EXAMPLE"
runc-delete.8.md
runc-exec.8.md
runc-kill.8.md
2: "EXAMPE:"
runc-spec.8.md
3: EXAMPLE title exist in manual, but not exist in code's --help output
delete.go
exec.go
kill.go
This patch unified above format, and deleted some useless blanks.
Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
If runc was SIGKILL'd or something happened and the container was not
able to start and runc died as well then we could get into the state
where `$root/<containerid>` exists but `$root/<containerid>/state.json`
does not. This will not allow libcontainer to load the container to
call the delete function as it has no data on the container other than
its id. We should just remove it in runc so that that system matches
what runc sees for the container.
Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
By adding detach to runc the container process is the only thing running
on the system is the containers process.
This allows better usage of memeory and no runc process being long
lived. With this addition you also need a delete command because the
detached container will not be able to remove state and the left over
cgroups directories.
Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
Zhang Wei
Michael Crosby
allencloud
Wang Long
Kenfe-Mickael Laventure
Mrunal Patel
Zhao Lei
Qiang Huang
Amit Krishnan
Mike Brown