记一次docker启动失败问题总结Cannot connect to the Docker daemon at unix:/var/run/docker.soc

admin

Jun 22 11:15:38 openstack dockerd: time="2022-06-22T11:15:38.688767002+08:00" level=info msg="Starting up"
' y5 p  o) D- [( U# eJun 22 11:15:38 openstack dockerd: time="2022-06-22T11:15:38.691966214+08:00" level=info msg="parsed scheme: \"unix\"" module=grpc
Jun 22 11:15:38 openstack dockerd: time="2022-06-22T11:15:38.692007875+08:00" level=info msg="scheme \"unix\" not registered, fallback to default scheme" module=grpc
Jun 22 11:15:38 openstack dockerd: time="2022-06-22T11:15:38.692053506+08:00" level=info msg="ccResolverWrapper: sending update to cc: {[{unix:///run/containerd/containerd.sock  <nil> 0 <nil>}] <nil> <nil>}" module=grpc
# \  A+ F1 B3 l2 X2 hJun 22 11:15:38 openstack dockerd: time="2022-06-22T11:15:38.692095723+08:00" level=info msg="ClientConn switching balancer to \"pick_first\"" module=grpc
( e1 v1 V9 t& e; {! p9 lJun 22 11:15:38 openstack dockerd: time="2022-06-22T11:15:38.694155125+08:00" level=info msg="parsed scheme: \"unix\"" module=grpc
# G- a0 B) G$ tJun 22 11:15:38 openstack dockerd: time="2022-06-22T11:15:38.694200596+08:00" level=info msg="scheme \"unix\" not registered, fallback to default scheme" module=grpc
Jun 22 11:15:38 openstack dockerd: time="2022-06-22T11:15:38.694221675+08:00" level=info msg="ccResolverWrapper: sending update to cc: {[{unix:///run/containerd/containerd.sock  <nil> 0 <nil>}] <nil> <nil>}" module=grpc
Jun 22 11:15:38 openstack dockerd: time="2022-06-22T11:15:38.694237395+08:00" level=info msg="ClientConn switching balancer to \"pick_first\"" module=grpc
9 u+ R6 G$ l5 K& }) v' tJun 22 11:15:38 openstack dockerd: time="2022-06-22T11:15:38.782587671+08:00" level=info msg="[graphdriver] using prior storage driver: overlay2"
Jun 22 11:15:38 openstack dockerd: time="2022-06-22T11:15:38.923229051+08:00" level=info msg="Loading containers: start."
Jun 22 11:15:41 openstack dockerd: time="2022-06-22T11:15:41.746420451+08:00" level=error msg="ecd807d55b2549900134475d67ba42c6f692c0d2db9058c5acc43c5d1a3651fb cleanup: failed to delete container from containerd: no such container"
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1、Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?

答：

docker这种报错一般情况都是docker未启动对于这种情况只用重启docker就行了：

service docker restart  

还有一种情况则是docker配置文件出错按照提示查看报错，并找到相应位置进行更改：

systemctl status docker.service   或    journalctl -xn

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admin

解决过程：
0 O  O) w* J; h$ Z编辑文件：
* q# p. C1 D5 ?& v8 ?; q: z9 h4 u[root@openstack ~]# vim /etc/docker/daemon.json
% t8 N& o; I, d3 ?
' `: N% T: r* a: P/ Q- B" Y{
     "bip": "150.17.10.1/16"
2 k+ A( n; E, `! q: w5 p% { }

[root@openstack ~]# vim /etc/systemd/system/docker.service.d/kolla.conf
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[Service]
0 r/ l6 j  h- [1 d; ^" OMountFlags=shared
9 C. L6 `% q. s! FExecStart=
ExecStart=/usr/bin/dockerd --insecure-registry xx.xx.xx.xx:4000 --log-opt max-file=5 --log-opt max-size=50m

系统重新reload
systemctl daemon-reload
重启docker服务：
systemctl restart docker.service
检查：
8 M/ j: H7 N  t9 O% ][root@openstack ~]# docker ps  
CONTAINER ID   IMAGE                                                  COMMAND                  CREATED             STATUS                         PORTS     NAMES


[root@openstack ~]#  docker info
Client:
Context:    default
! R! q# C( ~' W- ^ Debug Mode: false
Plugins:
4 }9 D4 y+ P+ [# }5 S- A% H& O  app: Docker App (Docker Inc., v0.9.1-beta3)
& G# j, m$ V; U1 ]- v  buildx: Docker Buildx (Docker Inc., v0.8.2-docker)
; H) ^5 n" J+ C/ o) P4 g7 ?) }  scan: Docker Scan (Docker Inc., v0.17.0)
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Server:
0 d$ I1 j  t9 V4 f" q Containers: 31
  Running: 30
  Paused: 0
! R6 O7 z% c7 M  Stopped: 1
Images: 31
$ U' K! W4 a+ V, g Server Version: 20.10.17
7 Q0 q: K) |) N1 ^+ y6 N: [ Storage Driver: overlay2
; k( g" E7 h: G6 D' [% Z1 K2 k  Backing Filesystem: xfs
  Supports d_type: true
8 @8 t- t6 P3 _9 R" F" M  Native Overlay Diff: true
  userxattr: false
3 X: }* Q5 ^, e2 O Logging Driver: json-file
, U8 s7 i2 L$ d& ?0 E0 P# D Cgroup Driver: cgroupfs
8 K/ ~9 s1 l: s( ]9 J  b0 p Cgroup Version: 1
# C5 o1 z, q" f" y6 _ Plugins:
  Volume: local
0 _# r3 _1 J0 x# E" ?* X! k  Network: bridge host ipvlan macvlan null overlay
  Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
! F* A" F: t- w' z Swarm: inactive
+ y" k7 Z; q( F2 a) | Runtimes: io.containerd.runc.v2 io.containerd.runtime.v1.linux runc
Default Runtime: runc
% }0 S+ V6 _/ |$ f8 P Init Binary: docker-init
5 [0 G: E! r6 `& H+ T9 _ containerd version: 10c12954828e7c7c9b6e0ea9b0c02b01407d3ae1
runc version: v1.1.2-0-ga916309
5 q6 h# c0 u. }( }/ m init version: de40ad0
Security Options:
: r" L2 Q$ F0 c4 N  W4 n( W  seccomp
   Profile: default
0 p* \/ s' ~+ B. H; ?  y. ?! s Kernel Version: 3.10.0-1160.el7.x86_64
Operating System: CentOS Linux 7 (Core)
OSType: linux
4 j* g  u: a7 }  `7 e5 ?" ` Architecture: x86_64
3 S* e& R+ e& H5 V' F CPUs: 16
Total Memory: 15.51GiB
1 R1 y; s, f$ V6 A5 F Name: openstack.novalocal
ID: IL2Z:QYIC:CVO4:DKSU:RAVA:ONC2:ZSBT:JLHA:FBWV:JY7W:E7SS:W7AA
Docker Root Dir: /var/lib/docker
Debug Mode: false
Registry: https://index.docker.io/v1/
Labels:
" `4 u+ \0 [9 Q Experimental: false
Insecure Registries:
  192.168.0.75:4000
  127.0.0.0/8
Live Restore Enabled: false
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