Hi!
I'm facing an issue with running docker containers by docker-compose. Before writing here, I tried all possible solutions, did research in google an so on. Still no luck! Hope, folks here can help me to figure out my issue related to docker running containers.
Expected behavior
Running 4 containers from same image
Application running in docker container generates random data and creates json string.
Each application running inside containers should generate/create unique values inside docker containers.
Actual behavior
Running 4 containers from same image
Applications running inside docker containers mixing a values and almost 70% is the same value.
Assuming, issue with containers "shared" memory.
Same application(s) running outside of docker container works perfect and generates unique values.
Tested with PHP, Node.js, Golang. The issue is the same.
Steps to reproduce the behavior
It's very complicated to reproduce the issue.
But in some words you can imagine:
Without docker containers creation, running 4 copies of the same application: Generates unique random values.
Inside docker containers, applications running and 70% of values is the same.
Assuming, a problem comes from container's memory stack.
Using docker-compose to deploy containers:
all 4 containers using the same image
container A Using Image "Myimg"
container B Using Image "Myimg"
container C Using Image "Myimg"
container D Using Image "Myimg"
Output of docker version:
Docker version 20.10.12, build e91ed57
Output of docker info:
Client:
Context: default
Debug Mode: false
Plugins:
app: Docker App (Docker Inc., v0.9.1-beta3)
buildx: Docker Buildx (Docker Inc., v0.7.1-docker)
scan: Docker Scan (Docker Inc., v0.12.0)
Server:
Containers: 8
Running: 6
Paused: 0
Stopped: 2
Images: 41
Server Version: 20.10.12
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: 7b11cfaabd73bb80907dd23182b9347b4245eb5d
runc version: v1.0.2-0-g52b36a2
init version: de40ad0
Security Options:
apparmor
seccomp
Profile: default
cgroupns
Kernel Version: 5.13.0-22-generic
Operating System: Ubuntu 21.10
OSType: linux
Architecture: x86_64
CPUs: 4
Total Memory: 15.54GiB
Name: david-Macmini
ID: FNY6:BSVD:L7JK:BFCW:ZCMP:6OMK:HM3I:U22T:WB2W:FCXM:4WC5:XS7B
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
Running the docker in: Ubuntu 21.10 ( bare metal )
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