Docker: what does runc:[2:INIT] mean?

Recently we have upgraded our Linux kernel of web server from 3.12.57-60.35 to 3.12.62-60.62.1.

After the upgrade, all docker containers can't be well started.

Each time when I try to start my container, a brand new runc:[2:INIT] process will be created and hang there, which takes 100% cpu load.

Meanwhile, the container failed to be started.

What does runc:[2:INIT] mean?
How to fix it?

enter image description here

Some background information

> docker -v
Docker version 17.04.0-ce, build 78d1802

> uname -r
3.12.74-60.64.96-default

> containerd -v
containerd version 0.2.3

> docker-runc -v
runc version spec: 1.0.0-rc2-dev

Docker info

docker info
Containers: 1
 Running: 0
 Paused: 0
 Stopped: 1
Images: 28
Server Version: 17.04.0-ce
Storage Driver: overlay
 Backing Filesystem: xfs
 Supports d_type: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
 Volume: local
 Network: bridge host macvlan null overlay
Swarm: inactive
Runtimes: oci runc
Default Runtime: runc
Init Binary:
containerd version:  (expected: 422e31ce907fd9c3833a38d7b8fdd023e5a76e73)
runc version: N/A (expected: 9c2d8d184e5da67c95d601382adf14862e4f2228)
init version: N/A (expected: 949e6facb77383876aeff8a6944dde66b3089574)
Security Options:
 apparmor
 seccomp
  Profile: default
Kernel Version: 3.12.74-60.64.96-default
Operating System: SUSE Linux Enterprise Server 12 SP1
OSType: linux
Architecture: x86_64
CPUs: 8
Total Memory: 15.19GiB
Name: pc23jamdevops01
ID: 5V4L:E4FT:6FYQ:JCNJ:GPKC:UZBW:O33D:PMKF:Y5X5:7T2X:GFG6
Docker Root Dir: /docker
Debug Mode (client): false
Debug Mode (server): false
Registry: https://index.docker.io/v1/
Experimental: false
Insecure Registries:
  xxxxxxx(it's masked by me.)
Live Restore Enabled: false
WARNING: No swap limit support
WARNING: No kernel memory limit support

Trace

enabled the debug mode of docker
kill -SIGUSR1 $(pidof dockerd)

the trace shows

goroutine 795 [select, 29 minutes]:
github.com/docker/docker/vendor/google.golang.org/grpc/transport.(*Stream).waitOnHeader(0xc420774ff0, 0x10, 0xc4209caa80)
  /home/abuild/rpmbuild/BUILD/docker-18.09.0_ce/components/engine/.gopath/src/github.com/docker/docker/vendor/google.golang.org/grpc/transport/transport.go:222 +0x101
github.com/docker/docker/vendor/google.golang.org/grpc/transport.(*Stream).RecvCompress(0xc420774ff0, 0x7f24a3df3ab0, 0xc4209cab40)
  /home/abuild/rpmbuild/BUILD/docker-18.09.0_ce/components/engine/.gopath/src/github.com/docker/docker/vendor/google.golang.org/grpc/transport/transport.go:233 +0x2d
github.com/docker/docker/vendor/google.golang.org/grpc.(*csAttempt).recvMsg(0xc421c98dd0, 0x7f24a3c5e920, 0xc420b80840, 0x0, 0x0)
  /home/abuild/rpmbuild/BUILD/docker-18.09.0_ce/components/engine/.gopath/src/github.com/docker/docker/vendor/google.golang.org/grpc/stream.go:515 +0x63b
github.com/docker/docker/vendor/google.golang.org/grpc.(*clientStream).RecvMsg(0xc421954280, 0x7f24a3c5e920, 0xc420b80840, 0x0, 0x0)
  /home/abuild/rpmbuild/BUILD/docker-18.09.0_ce/components/engine/.gopath/src/github.com/docker/docker/vendor/google.golang.org/grpc/stream.go:395 +0x45
github.com/docker/docker/vendor/google.golang.org/grpc.invoke(0x7f24a3e29980, 0xc421534090, 0x7f24a33f206d, 0x2a, 0x7f24a3c63380, 0xc42090e0e0, 0x7f24a3c5e920, 0xc420b80840, 0xc4209a0000, 0xc420978420, ...)
  /home/abuild/rpmbuild/BUILD/docker-18.09.0_ce/components/engine/.gopath/src/github.com/docker/docker/vendor/google.golang.org/grpc/call.go:83 +0x185
github.com/docker/docker/vendor/github.com/containerd/containerd.namespaceInterceptor.unary(0x7f24a339c737, 0x4, 0x7f24a3e29900, 0xc42003e028, 0x7f24a33f206d, 0x2a, 0x7f24a3c63380, 0xc42090e0e0, 0x7f24a3c5e920, 0xc420b80840, ...)
  /home/abuild/rpmbuild/BUILD/docker-18.09.0_ce/components/engine/.gopath/src/github.com/docker/docker/vendor/github.com/containerd/containerd/grpc.go:35 +0xf6
github.com/docker/docker/vendor/github.com/containerd/containerd.(namespaceInterceptor).(github.com/docker/docker/vendor/github.com/containerd/containerd.unary)-fm(0x7f24a3e29900, 0xc42003e028, 0x7f24a33f206d, 0x2a, 0x7f24a3c63380, 0xc42090e0e0, 0x7f24a3c5e920, 0xc420b80840, 0xc4209a0000, 0x7f24a3df3b20, ...)
  /home/abuild/rpmbuild/BUILD/docker-18.09.0_ce/components/engine/.gopath/src/github.com/docker/docker/vendor/github.com/containerd/containerd/grpc.go:51 +0xf6
github.com/docker/docker/vendor/google.golang.org/grpc.(*ClientConn).Invoke(0xc4209a0000, 0x7f24a3e29900, 0xc42003e028, 0x7f24a33f206d, 0x2a, 0x7f24a3c63380, 0xc42090e0e0, 0x7f24a3c5e920, 0xc420b80840, 0x0, ...)
  /home/abuild/rpmbuild/BUILD/docker-18.09.0_ce/components/engine/.gopath/src/github.com/docker/docker/vendor/google.golang.org/grpc/call.go:35 +0x10b
github.com/docker/docker/vendor/google.golang.org/grpc.Invoke(0x7f24a3e29900, 0xc42003e028, 0x7f24a33f206d, 0x2a, 0x7f24a3c63380, 0xc42090e0e0, 0x7f24a3c5e920, 0xc420b80840, 0xc4209a0000, 0x0, ...)
  /home/abuild/rpmbuild/BUILD/docker-18.09.0_ce/components/engine/.gopath/src/github.com/docker/docker/vendor/google.golang.org/grpc/call.go:60 +0xc3
github.com/docker/docker/vendor/github.com/containerd/containerd/api/services/tasks/v1.(*tasksClient).Create(0xc420a5c5b0, 0x7f24a3e29900, 0xc42003e028, 0xc42090e0e0, 0x0, 0x0, 0x0, 0x0, 0xc420ec4a40, 0x1e)
  /home/abuild/rpmbuild/BUILD/docker-18.09.0_ce/components/engine/.gopath/src/github.com/docker/docker/vendor/github.com/containerd/containerd/api/services/tasks/v1/tasks.pb.go:412 +0xd4
github.com/docker/docker/vendor/github.com/containerd/containerd.(*container).NewTask(0xc42124f7e0, 0x7f24a3e29900, 0xc42003e028, 0xc4223f5360, 0xc42000e9c8, 0x1, 0x1, 0x0, 0x0, 0x0, ...)
  /home/abuild/rpmbuild/BUILD/docker-18.09.0_ce/components/engine/.gopath/src/github.com/docker/docker/vendor/github.com/containerd/containerd/container.go:250 +0x70a
github.com/docker/docker/libcontainerd.(*client).Start(0xc420a125b0, 0x7f24a3e29900, 0xc42003e028, 0xc4215fce40, 0x40, 0x0, 0x0, 0xc4210bd000, 0xc4207fd6f0, 0x0, ...)
  /home/abuild/rpmbuild/BUILD/docker-18.09.0_ce/components/engine/.gopath/src/github.com/docker/docker/libcontainerd/client_daemon.go:289 +0x446
github.com/docker/docker/daemon.(*Daemon).containerStart(0xc420948000, 0xc421a458c0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0)
  /home/abuild/rpmbuild/BUILD/docker-18.09.0_ce/components/engine/.gopath/src/github.com/docker/docker/daemon/start.go:185 +0x55f
github.com/docker/docker/daemon.(*Daemon).ContainerStart(0xc420948000, 0xc420731517, 0x40, 0x0, 0x0, 0x0, 0x0, 0x0, 0x7f24a3a00640, 0xc421dd7601)
  /home/abuild/rpmbuild/BUILD/docker-18.09.0_ce/components/engine/.gopath/src/github.com/docker/docker/daemon/start.go:95 +0x1c4
github.com/docker/docker/api/server/router/container.(*containerRouter).postContainersStart(0xc420ea83c0, 0x7f24a3e29980, 0xc4211cf290, 0x7f24a3e27d80, 0xc420854fc0, 0xc420690400, 0xc4211cf1d0, 0x7f24a339d6d5, 0x5)
  /home/abuild/rpmbuild/BUILD/docker-18.09.0_ce/components/engine/.gopath/src/github.com/docker/docker/api/server/router/container/container_routes.go:203 +0x26a
github.com/docker/docker/api/server/router/container.(*containerRouter).(github.com/docker/docker/api/server/router/container.postContainersStart)-fm(0x7f24a3e29980, 0xc4211cf290, 0x7f24a3e27d80, 0xc420854fc0, 0xc420690400, 0xc4211cf1d0, 0x7f24a1ee64cc, 0x7f24a3c663a0)
  /home/abuild/rpmbuild/BUILD/docker-18.09.0_ce/components/engine/.gopath/src/github.com/docker/docker/api/server/router/container/container.go:52 +0x6b
github.com/docker/docker/api/server/middleware.ExperimentalMiddleware.WrapHandler.func1(0x7f24a3e29980, 0xc4211cf290, 0x7f24a3e27d80, 0xc420854fc0, 0xc420690400, 0xc4211cf1d0, 0x7f24a3e29980, 0xc4211cf290)
  /home/abuild/rpmbuild/BUILD/docker-18.09.0_ce/components/engine/.gopath/src/github.com/docker/docker/api/server/middleware/experimental.go:26 +0xda
github.com/docker/docker/api/server/middleware.VersionMiddleware.WrapHandler.func1(0x7f24a3e29980, 0xc4211cf230, 0x7f24a3e27d80, 0xc420854fc0, 0xc420690400, 0xc4211cf1d0, 0x18, 0xc421dd78f8)
  /home/abuild/rpmbuild/BUILD/docker-18.09.0_ce/components/engine/.gopath/src/github.com/docker/docker/api/server/middleware/version.go:62 +0x401
github.com/docker/docker/pkg/authorization.(*Middleware).WrapHandler.func1(0x7f24a3e29980, 0xc4211cf230, 0x7f24a3e27d80, 0xc420854fc0, 0xc420690400, 0xc4211cf1d0, 0x7f24a1daefd7, 0x7f24a3571380)
  /home/abuild/rpmbuild/BUILD/docker-18.09.0_ce/components/engine/.gopath/src/github.com/docker/docker/pkg/authorization/middleware.go:59 +0x7ab
github.com/docker/docker/api/server/middleware.DebugRequestMiddleware.func1(0x7f24a3e29980, 0xc4211cf230, 0x7f24a3e27d80, 0xc420854fc0, 0xc420690400, 0xc4211cf1d0, 0x7f24a3e29980, 0xc4211cf230)
  /home/abuild/rpmbuild/BUILD/docker-18.09.0_ce/components/engine/.gopath/src/github.com/docker/docker/api/server/middleware/debug.go:25 +0x8db
github.com/docker/docker/api/server.(*Server).makeHTTPHandler.func1(0x7f24a3e27d80, 0xc420854fc0, 0xc420690400)
  /home/abuild/rpmbuild/BUILD/docker-18.09.0_ce/components/engine/.gopath/src/github.com/docker/docker/api/server/server.go:141 +0x19a
net/http.HandlerFunc.ServeHTTP(0xc4214f36a0, 0x7f24a3e27d80, 0xc420854fc0, 0xc420690400)
  /usr/lib64/go/1.10/src/net/http/server.go:1947 +0x46
github.com/docker/docker/vendor/github.com/gorilla/mux.(*Router).ServeHTTP(0xc421ceba40, 0x7f24a3e27d80, 0xc420854fc0, 0xc420690400)
  /home/abuild/rpmbuild/BUILD/docker-18.09.0_ce/components/engine/.gopath/src/github.com/docker/docker/vendor/github.com/gorilla/mux/mux.go:103 +0x228
github.com/docker/docker/api/server.(*routerSwapper).ServeHTTP(0xc421a77360, 0x7f24a3e27d80, 0xc420854fc0, 0xc420690400)
  /home/abuild/rpmbuild/BUILD/docker-18.09.0_ce/components/engine/.gopath/src/github.com/docker/docker/api/server/router_swapper.go:29 +0x72
net/http.serverHandler.ServeHTTP(0xc42020c4e0, 0x7f24a3e27d80, 0xc420854fc0, 0xc420690400)
  /usr/lib64/go/1.10/src/net/http/server.go:2697 +0xbe
net/http.(*conn).serve(0xc420fe2320, 0x7f24a3e298c0, 0xc421196800)
  /usr/lib64/go/1.10/src/net/http/server.go:1830 +0x653
created by net/http.(*Server).Serve
  /usr/lib64/go/1.10/src/net/http/server.go:2798 +0x27d

What is runc init?

runc - Open Container Initiative runtime runc is a command line client for running applications packaged according to the Open Container Initiative (OCI) format and is a compliant implementation of the Open Container Initiative specification Runc is a so-called “container runtime”.

What does init do in Docker?

The docker app init command is used to initialize a new Docker application project. If you run it on its own, it initializes a new empty project. If you point it to an existing docker-compose. yml file, it initializes a new project based on the Compose file.

What is runc container?

runc: This is the low-level container runtime, or the thing that actually creates and runs containers). It includes libcontainer, a native Go-based implementation for creating containers.

What is runc in Kubernetes?

What is runc? Very briefly, runc is the low-level tool which does the heavy lifting of spawning a Linux container. Other tools like Docker, Containerd, and CRI-O sit on top of runc to deal with things like data formatting and serialization, but runc is at the heart of all of these systems.

This is 2-years old at this point with no answers. It looks like the OP didn't follow up. As a point of interest for future readers though...

Although I don't know what was specifically causing the issue with docker, the question in the title does have a specific answer. In Linux the ps command will show the command and arguments that started the process. If it cannot do so it will show other useful information. In this case, it is showing the command, runc, followed by the run level of the process and the parent process:

command:[run-level:parent-process]

So, init is the parent and the process is at run-level 2.

Full details can be found on this unix.stackexchange question and it's answers.

Docker: what does runc:[2:INIT] mean?

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docker

containers

Some background information

Docker info

Trace

Ryan Lyu

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Docker: what does runc:[2:INIT] mean?

Tags:

docker

containers

Some background information

Docker info

Trace

Ryan Lyu

People also ask

Video Answer

1 Answers

Software Engineer

Related questions

Recent Activity

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