Hello i have a problem regarding the docker api cpu_stats:
When i run an api call against my docker api, which is running on a windows machine, the json contains a key named “cpu_stats”. when i run the same api call on the api running on a debian machine, it does not contain the json key “cpu_stats”. Why? And how can i “solve” this problem.
The api clearly provides it: https://docs.docker.com/engine/api/v1.42/#tag/Container/operation/ContainerStats
Please share docker info and docker version from both installations.
On Linux Server:
>>> docker version
Client: Docker Engine - Community
Version: 20.10.22
API version: 1.41
Go version: go1.18.9
Git commit: 3a2c30b
Built: Thu Dec 15 22:28:22 2022
OS/Arch: linux/amd64
Context: default
Experimental: true
Server: Docker Engine - Community
Engine:
Version: 20.10.22
API version: 1.41 (minimum version 1.12)
Go version: go1.18.9
Git commit: 42c8b31
Built: Thu Dec 15 22:26:14 2022
OS/Arch: linux/amd64
Experimental: false
containerd:
Version: 1.6.14
GitCommit: 9ba4b250366a5ddde94bb7c9d1def331423aa323
runc:
Version: 1.1.4
GitCommit: v1.1.4-0-g5fd4c4d
docker-init:
Version: 0.19.0
GitCommit: de40ad0
>>> docker info
Client:
Context: default
Debug Mode: false
Plugins:
app: Docker App (Docker Inc., v0.9.1-beta3)
buildx: Docker Buildx (Docker Inc., v0.9.1-docker)
compose: Docker Compose (Docker Inc., v2.14.1)
scan: Docker Scan (Docker Inc., v0.23.0)
Server:
Containers: 27
Running: 27
Paused: 0
Stopped: 0
Images: 191
Server Version: 20.10.22
Storage Driver: overlay2
Backing Filesystem: extfs
Supports d_type: true
Native Overlay Diff: true
userxattr: false
Logging Driver: json-file
Cgroup Driver: systemd
Cgroup Version: 2
Plugins:
Volume: local
Network: bridge host ipvlan macvlan null overlay
Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
Swarm: inactive
Runtimes: io.containerd.runc.v2 io.containerd.runtime.v1.linux runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 9ba4b250366a5ddde94bb7c9d1def331423aa323
runc version: v1.1.4-0-g5fd4c4d
init version: de40ad0
Security Options:
apparmor
seccomp
Profile: default
cgroupns
Kernel Version: 5.10.0-20-amd64
Operating System: Debian GNU/Linux 11 (bullseye)
OSType: linux
Architecture: x86_64
CPUs: 2
Total Memory: 7.585GiB
Name: <ANONYMIZED>
ID: <ANONYMIZED>
Docker Root Dir: /var/lib/docker
Debug Mode: false
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
127.0.0.0/8
Live Restore Enabled: false
WARNING: API is accessible on http://172.20.1.1:2375 without encryption.
Access to the remote API is equivalent to root access on the host. Refer
to the 'Docker daemon attack surface' section in the documentation for
more information: https://docs.docker.com/go/attack-surface/
On Windows:
>>> docker version
Client:
Cloud integration: v1.0.29
Version: 20.10.22
API version: 1.41
Go version: go1.18.9
Git commit: 3a2c30b
Built: Thu Dec 15 22:36:18 2022
OS/Arch: windows/amd64
Context: default
Experimental: true
Server: Docker Desktop 4.16.3 (96739)
Engine:
Version: 20.10.22
API version: 1.41 (minimum version 1.12)
Go version: go1.18.9
Git commit: 42c8b31
Built: Thu Dec 15 22:26:14 2022
OS/Arch: linux/amd64
Experimental: false
containerd:
Version: 1.6.14
GitCommit: 9ba4b250366a5ddde94bb7c9d1def331423aa323
runc:
Version: 1.1.4
GitCommit: v1.1.4-0-g5fd4c4d
docker-init:
Version: 0.19.0
GitCommit: de40ad0
>>> docker info
Client:
Context: default
Debug Mode: false
Plugins:
buildx: Docker Buildx (Docker Inc., v0.10.0)
compose: Docker Compose (Docker Inc., v2.15.1)
dev: Docker Dev Environments (Docker Inc., v0.0.5)
extension: Manages Docker extensions (Docker Inc., v0.2.17)
sbom: View the packaged-based Software Bill Of Materials (SBOM) for an image (Anchore Inc., 0.6.0)
scan: Docker Scan (Docker Inc., v0.23.0)
Server:
Containers: 2
Running: 2
Paused: 0
Stopped: 0
Images: 22
Server Version: 20.10.22
Storage Driver: overlay2
Backing Filesystem: extfs
Supports d_type: true
Native Overlay Diff: true
userxattr: false
Logging Driver: json-file
Cgroup Driver: cgroupfs
Cgroup Version: 1
Plugins:
Volume: local
Network: bridge host ipvlan macvlan null overlay
Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
Swarm: inactive
Runtimes: runc io.containerd.runc.v2 io.containerd.runtime.v1.linux
Default Runtime: runc
Init Binary: docker-init
containerd version: 9ba4b250366a5ddde94bb7c9d1def331423aa323
runc version: v1.1.4-0-g5fd4c4d
init version: de40ad0
Security Options:
seccomp
Profile: default
Kernel Version: 5.10.16.3-microsoft-standard-WSL2
Operating System: Docker Desktop
OSType: linux
Architecture: x86_64
CPUs: 8
Total Memory: 7.67GiB
Name: <ANONYMIZED>
ID: <ANONYMIZED>
Docker Root Dir: /var/lib/docker
Debug Mode: false
HTTP Proxy: http.docker.internal:3128
HTTPS Proxy: http.docker.internal:3128
No Proxy: hubproxy.docker.internal
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
hubproxy.docker.internal:5000
127.0.0.0/8
Live Restore Enabled: false
WARNING: No blkio throttle.read_bps_device support
WARNING: No blkio throttle.write_bps_device support
WARNING: No blkio throttle.read_iops_device support
WARNING: No blkio throttle.write_iops_device support
Your Debian system uses cgroup v2 (which makes it use systemd as cgroup and add the security option cgroupns). It works like a charm on Ubuntu with cgroup v1. Your DDfWindows uses cgroup v1 as well.
I have no idea if changing to cgroup v1 will work for you: https://docs.docker.com/config/containers/runmetrics/#changing-cgroup-version
The api docs indicate why it might not be working:
If you feel this is a bug, then you might want to raise an issue in the moby github project:
But how I understand it only one specific key under cpu_stats will not work. I don’t know which one exactly since I don’t have the documentation right now but that’s what I understand from the api docs.
Is there any way to get the cpu stats of a container in any other way? When I use shell tools like ctop I can view them normally and everything works fine.