Openshift 错误解决 "修改docker cgroup driver"

一、Openshift 错误解决 "修改docker cgroup driver"

  一、错误如下

failed to run Kubelet: failed to create kubelet: misconfiguration: kubelet cgroup driver: "systemd" is different from docker cgroup driver: "cgroupfs"

  二、系统环境

　　1、系统信息

# cat /etc/redhat-release 
CentOS Linux release 7.3.1611 (Core) 
# uname -a
Linux jumpserver 3.10.0-514.el7.x86_64 #1 SMP Tue Nov 22 16:42:41 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

　　2、OpenShift版本

# openshift version
openshift v3.9.0+191fece
kubernetes v1.9.1+a0ce1bc657
etcd 3.2.16

　　3、oc版本

# oc version
oc v3.9.0+191fece
kubernetes v1.9.1+a0ce1bc657
features: Basic-Auth GSSAPI Kerberos SPNEGO

　　4、docker版本

# docker version 
Client:
 Version:      18.03.1-ce
 API version:  1.37
 Go version:   go1.9.5
 Git commit:   9ee9f40
 Built:        Thu Apr 26 07:20:16 2018
 OS/Arch:      linux/amd64
 Experimental: false
 Orchestrator: swarm

Server:
 Engine:
  Version:      18.03.1-ce
  API version:  1.37 (minimum version 1.12)
  Go version:   go1.9.5
  Git commit:   9ee9f40
  Built:        Thu Apr 26 07:23:58 2018
  OS/Arch:      linux/amd64
  Experimental: false

　　docker info信息

# docker info
Containers: 2
 Running: 0
 Paused: 0
 Stopped: 2
Images: 1
Server Version: 18.03.1-ce
Storage Driver: devicemapper
 Pool Name: docker-253:0-51214265-pool
 Pool Blocksize: 65.54kB
 Base Device Size: 10.74GB
 Backing Filesystem: xfs
 Udev Sync Supported: true
 Data file: /dev/loop0
 Metadata file: /dev/loop1
 Data loop file: /var/lib/docker/devicemapper/devicemapper/data
 Metadata loop file: /var/lib/docker/devicemapper/devicemapper/metadata
 Data Space Used: 1.586GB
 Data Space Total: 107.4GB
 Data Space Available: 11GB
 Metadata Space Used: 3.355MB
 Metadata Space Total: 2.147GB
 Metadata Space Available: 2.144GB
 Thin Pool Minimum Free Space: 10.74GB
 Deferred Removal Enabled: true
 Deferred Deletion Enabled: true
 Deferred Deleted Device Count: 0
 Library Version: 1.02.146-RHEL7 (2018-01-22)
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
 Volume: local
 Network: bridge host macvlan null overlay
 Log: awslogs fluentd gcplogs gelf journald json-file logentries splunk syslog
Swarm: inactive
Runtimes: runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 773c489c9c1b21a6d78b5c538cd395416ec50f88
runc version: 4fc53a81fb7c994640722ac585fa9ca548971871
init version: 949e6fa
Security Options:
 seccomp
  Profile: default
Kernel Version: 3.10.0-514.el7.x86_64
Operating System: CentOS Linux 7 (Core)
OSType: linux
Architecture: x86_64
CPUs: 4
Total Memory: 9.608GiB
Name: jumpserver
ID: JMUS:EDNQ:FY7N:3PJJ:IK6K:FUSS:HTCC:VJME:T7NI:CE6M:4UUH:AYYY
Docker Root Dir: /var/lib/docker
Debug Mode (client): false
Debug Mode (server): false
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
 127.0.0.0/8
Live Restore Enabled: false

WARNING: devicemapper: usage of loopback devices is strongly discouraged for production use.
         Use `--storage-opt dm.thinpooldev` to specify a custom block storage device.

  三、解决方法

　　1、更改docker的启动参数

　　vim /usr/lib/systemd/system/docker.service

#ExecStart=/usr/bin/dockerd
ExecStart=/usr/bin/dockerd --exec-opt native.cgroupdriver=systemd

　　2、重启docker

systemctl daemon-reload
systemctl restart docker