Docker Change Cgroup Driver to Systemd

docker change cgroup driver to systemd

Since I have two configuration file I need to add the entry in the second config file also -- /etc/systemd/system/docker.service.d/docker-thinpool.conf:

--exec-opt native.cgroupdriver=systemd \

when change exec-opt native.cgroupdriver to cgroupfs ，docker can not run correct?

Docker 1.12.6 ("community edition") is EOL and no longer supported;

We can install the latest docker version refer to 'https://docs.docker.com/engine/installation/linux/centos/'.

When using the latest docker version ,this issue is no longer reproduce !

[root@surenode1 ~]# docker info
Containers: 0
 Running: 0
 Paused: 0
 Stopped: 0
Images: 0
Server Version: 17.05.0-ce
Storage Driver: devicemapper
 Pool Name: docker-253:1-393732-pool
 Pool Blocksize: 65.54kB
 Base Device Size: 10.74GB
 Backing Filesystem: xfs
 Data file: /dev/loop0
 Metadata file: /dev/loop1
 Data Space Used: 11.8MB
 Data Space Total: 107.4GB
 Data Space Available: 50.86GB
 Metadata Space Used: 581.6kB
 Metadata Space Total: 2.147GB
 Metadata Space Available: 2.147GB
 Thin Pool Minimum Free Space: 10.74GB
 Udev Sync Supported: true
 Deferred Removal Enabled: false
 Deferred Deletion Enabled: false
 Deferred Deleted Device Count: 0
 Data loop file: /var/lib/docker/devicemapper/devicemapper/data
 Metadata loop file: /var/lib/docker/devicemapper/devicemapper/metadata
 Library Version: 1.02.135-RHEL7 (2016-11-16)
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins: 
 Volume: local
 Network: bridge host macvlan null overlay
Swarm: inactive
Runtimes: runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 9048e5e50717ea4497b757314bad98ea3763c145
runc version: 9c2d8d184e5da67c95d601382adf14862e4f2228
init version: 949e6fa
Security Options:
 seccomp
  Profile: default
Kernel Version: 3.10.0-514.16.1.el7.x86_64
Operating System: CentOS Linux 7 (Core)
OSType: linux
Architecture: x86_64
CPUs: 1
Total Memory: 3.702GiB
Name: surenode1
ID: NIYU:7BRX:JIQP:ZJMW:ZV6N:3336:5JSB:MWVQ:WR72:AO7J:QOEW:CHCA
Docker Root Dir: /var/lib/docker
Debug Mode (client): false
Debug Mode (server): false
Registry: https://index.docker.io/v1/
Experimental: false
Insecure Registries:
 127.0.0.0/8
Live Restore Enabled: false

[root@surenode1 ~]# docker version
Client:
 Version:      17.05.0-ce
 API version:  1.29
 Go version:   go1.7.5
 Git commit:   89658be
 Built:        Thu May  4 22:10:29 2017
 OS/Arch:      linux/amd64

Server:
 Version:      17.05.0-ce
 API version:  1.29 (minimum version 1.12)
 Go version:   go1.7.5
 Git commit:   89658be
 Built:        Thu May  4 22:10:29 2017
 OS/Arch:      linux/amd64
 Experimental: false

[root@surenode1 tmp]# docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
mysql               latest              e799c7f9ae9c        3 weeks ago         407MB
[root@surenode1 tmp]# ps -ef | grep docker
root     10173     1  1 17:31 ?        00:00:03 /usr/bin/dockerd **--exec-opt native.cgroupdriver=cgroupfs**
root     10177 10173  0 17:31 ?        00:00:00 docker-containerd -l unix:///var/run/docker/libcontainerd/docker-containerd.sock --metrics-interval=0 --start-timeout 2m --state-dir /var/run/docker/libcontainerd/containerd --shim docker-containerd-shim --runtime docker-runc
root     10535  9634  0 17:34 pts/0    00:00:00 grep --color=auto docker
[root@surenode1 tmp]# docker run -p 3307:3307 -e MYSQL_ROOT_PASSWORD=123456 -d mysql
8f2d30ea779b872604bdf0d3d500de16e17d1409cdc5b2688893202bfcebbf16
[root@surenode1 tmp]# 

Also,We can find a bug description about this issue.

https://bugzilla.redhat.com/show_bug.cgi?id=1444662

Change cgroup pid.max value?

After a long back and forth with my server hoster, they finally spilled the beans.

I was renting a V-Server with very beefy hardware for very little money. The catch? You can only run 700 concurrent tasks. That's where the pids.max value came from and overruled the TasksMax and numprocs values.

Environment Variable error while initializing kubernetes

The issued to be with the various versions of the softwares/modules that are needed. I was able to find a simple installation steps to accomplish the same

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