Raw exec can use cgroups to manage PIDs #4350
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client/driver/executor/executor.go
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| @@ -113,6 +113,11 @@ type ExecCommand struct { | |||
| // ResourceLimits determines whether resource limits are enforced by the | |||
| // executor. | |||
| ResourceLimits bool | |||
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| // Cgroup marks whether we put the process in a cgroup. Setting this field | |||
| // doesn't enforce resource limits. To enforce limits, set ResoruceLimits. | |||
| if err := manager.Apply(pid); err != nil { | ||
| e.logger.Printf("[ERR] executor: error applying pid to cgroup subset %v: %v", e.resConCtx.cgPaths, err) | ||
| return err | ||
| } |
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This whole block looks super convoluted, is this the only way to do it though? not an expert here..
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Yeah it is! I did my best to comment every operation since it is confusing. The API of the library we use for cgroups kinda forces this complexity. Couldn't figure out another way to do it!
client/driver/raw_exec_test.go
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| @@ -261,6 +265,92 @@ func TestRawExecDriver_Start_Kill_Wait(t *testing.T) { | |||
| } | |||
| } | |||
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| func TestRawExecDriver_Start_Kill_Wait_Cgroup(t *testing.T) { | |||
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would add a comment that this test verifies that a raw exec task's process gets killed correctly when configured to use cgroup.
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I'm going to lock this pull request because it has been closed for 120 days ⏳. This helps our maintainers find and focus on the active contributions. |
This PR makes it so that the raw exec driver uses cgroups to manage the
launched processes when on Linux and running as root. This can be disabled as
an option in the client map.
Fixes #4218 on Linux w/ cgroups and root