1325c2f8be
Hard-coding the tests to use /tmp/device_plugin for sockets is problematic because it prevents running tests in parallel on the same machine (perhaps because there are multiple developers, perhaps because testing is done independently on different code checkouts). /tmp/device_plugin also was not removed after testing. This is probably not that relevant. But more importantly, this change also fixes https://github.com/kubernetes/kubernetes/issues/59488. "make test" failed in TestDevicePluginReRegistration because something removed /tmp/device_plugin/device-plugin.sock while something else tried to connect to it: 2018/02/07 14:34:39 Starting to serve on /tmp/device_plugin/device-plugin.sock [pid 29568] connect(14, {sa_family=AF_UNIX, sun_path="/tmp/device_plugin/server.sock"}, 33) = 0 [pid 29568] unlinkat(AT_FDCWD, "/tmp/device_plugin/server.sock", 0) = 0 [pid 29568] unlinkat(AT_FDCWD, "/tmp/device_plugin/device-plugin.sock", 0) = 0 [pid 29568] --- SIGPIPE {si_signo=SIGPIPE, si_code=SI_USER, si_pid=29568, si_uid=1000} --- [pid 29568] connect(6, {sa_family=AF_UNIX, sun_path="/tmp/device_plugin/device-plugin.sock"}, 40) = -1 ENOENT (No such file or directory) E0207 14:34:39.961321 29568 endpoint.go:117] listAndWatch ended unexpectedly for device plugin mock with error rpc error: code = Unavailable desc = transport is closing strace: Process 29623 attached [pid 29574] connect(3, {sa_family=AF_UNIX, sun_path="/tmp/device_plugin/device-plugin.sock"}, 40) = -1 ENOENT (No such file or directory) [pid 29623] connect(3, {sa_family=AF_UNIX, sun_path="/tmp/device_plugin/device-plugin.sock"}, 40) = -1 ENOENT (No such file or directory) [pid 29574] connect(3, {sa_family=AF_UNIX, sun_path="/tmp/device_plugin/device-plugin.sock"}, 40) = -1 ENOENT (No such file or directory) E0207 14:34:49.961324 29568 endpoint.go:60] Can't create new endpoint with path /tmp/device_plugin/device-plugin.sock err failed to dial device plugin: context deadline exceeded E0207 14:34:49.961390 29568 manager.go:340] Failed to dial device plugin with request &RegisterRequest{Version:v1alpha2,Endpoint:device-plugin.sock,ResourceName:fake-domain/resource,}: failed to dial device plugin: context deadline exceeded panic: test timed out after 2m0s It's not entirely certain which code was to blame for this unlinkat() calls (perhaps some cleanup code from a previous test running in a goroutine?) but this no longer happened after switching to per-test socket directories.
Kubernetes
Kubernetes is an open source system for managing containerized applications across multiple hosts; providing basic mechanisms for deployment, maintenance, and scaling of applications.
Kubernetes builds upon a decade and a half of experience at Google running production workloads at scale using a system called Borg, combined with best-of-breed ideas and practices from the community.
Kubernetes is hosted by the Cloud Native Computing Foundation (CNCF). If you are a company that wants to help shape the evolution of technologies that are container-packaged, dynamically-scheduled and microservices-oriented, consider joining the CNCF. For details about who's involved and how Kubernetes plays a role, read the CNCF announcement.
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You have a working Go environment.
$ go get -d k8s.io/kubernetes
$ cd $GOPATH/src/k8s.io/kubernetes
$ make
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$ git clone https://github.com/kubernetes/kubernetes
$ cd kubernetes
$ make quick-release
For the full story, head over to the developer's documentation.
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