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"
Jun 22 11:15:38 openstack dockerd: time="2022-06-22T11:15:38.691966214+08:00" level=info msg="parsed scheme: \"unix\"" module=grpc
7 i7 W2 I( g# W% W9 c) Y( N- _$ B" IJun 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
% N: g2 K: x7 C) h3 G- ]# q  N6 [5 G( VJun 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
7 R8 z+ p4 U# \; i2 f5 @% N, KJun 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
Jun 22 11:15:38 openstack dockerd: time="2022-06-22T11:15:38.694155125+08:00" level=info msg="parsed scheme: \"unix\"" module=grpc
Jun 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
4 K8 X) Z  |& _* M* X) _3 z" iJun 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 Y2 o( s2 F) {& L4 u4 pJun 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"

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：
' _# N/ `8 Z' c. R2 ?# r- l5 n9 l2 k编辑文件：
[root@openstack ~]# vim /etc/docker/daemon.json
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- a$ x/ b: B" B! ]1 M0 }3 R2 Z1 L{
4 q& m3 _: i( C* N* @     "bip": "150.17.10.1/16"
}

[root@openstack ~]# vim /etc/systemd/system/docker.service.d/kolla.conf
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' i% o3 v# K# y[Service]
( f" }, p- ?2 E! RMountFlags=shared
$ f: b0 E- L" s& X- A. X# cExecStart=
ExecStart=/usr/bin/dockerd --insecure-registry xx.xx.xx.xx:4000 --log-opt max-file=5 --log-opt max-size=50m
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系统重新reload
! O2 @6 r+ l% z( m1 u% u2 ^/ {3 \systemctl daemon-reload
& t0 b1 G7 D& E7 b3 u  x重启docker服务：
systemctl restart docker.service
检查：
7 g; d8 ]0 j& L( b+ M[root@openstack ~]# docker ps  
CONTAINER ID   IMAGE                                                  COMMAND                  CREATED             STATUS                         PORTS     NAMES
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8 |) ?7 ?+ M/ m5 j) z2 \
. R9 K& ^' p6 j: R+ \[root@openstack ~]#  docker info
Client:
+ t1 t8 m' m! D) y7 A+ e Context:    default
Debug Mode: false
; h! a  e6 S! X. M  a Plugins:
# O1 u0 C$ A) S9 g5 x, w7 x  app: Docker App (Docker Inc., v0.9.1-beta3)
  w5 b8 s7 o+ S1 @  buildx: Docker Buildx (Docker Inc., v0.8.2-docker)
- N5 W4 k) H$ n& o4 R9 b1 z6 `  scan: Docker Scan (Docker Inc., v0.17.0)

) s9 Q2 z0 `$ C% S, A4 VServer:
Containers: 31
  Running: 30
$ E) E4 N7 s; u4 v: h) b  Paused: 0
3 A) G5 e2 b: P( d8 c5 I5 r- J6 G  Stopped: 1
" S, \1 }9 o9 q" d, W2 b' K' X Images: 31
! b+ U# G7 Z) [ Server Version: 20.10.17
$ d  P: D/ ~2 |4 v4 n. k2 s" E+ U Storage Driver: overlay2
$ b- c$ B  S/ K4 ]$ y  y; \  Backing Filesystem: xfs
9 t: Y. ~* _& H+ B7 R" E  Supports d_type: true
  Native Overlay Diff: true
6 X  L' J) X, Y( I  userxattr: false
) _9 K( ?2 m) ^, p# Y0 k5 I Logging Driver: json-file
Cgroup Driver: cgroupfs
Cgroup Version: 1
7 q' ^; z& E% s( U Plugins:
8 }+ r# x7 }# m9 J6 b+ F; A' B! G  Volume: local
# F# a: Y2 j9 {! W: v4 `9 [  Network: bridge host ipvlan macvlan null overlay
0 k9 c- T! c" x* M) S# i  Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
) T+ b9 A; j/ r' W5 A Swarm: inactive
. @. j* Z' ^7 w- D% @4 ] Runtimes: io.containerd.runc.v2 io.containerd.runtime.v1.linux runc
  M0 x4 E. _2 s0 h$ p( G Default Runtime: runc
0 j& p- Y! [" `8 H, ]4 i Init Binary: docker-init
7 ]# v4 n5 w* E. f9 x) c containerd version: 10c12954828e7c7c9b6e0ea9b0c02b01407d3ae1
runc version: v1.1.2-0-ga916309
" G# {' O% ^6 _( j. Q/ q8 _ init version: de40ad0
Security Options:
  seccomp
% f3 U" Y  O' O$ Z+ a- K: }" ]) K   Profile: default
8 Z( n  `" w/ ~. D" Z& |+ U Kernel Version: 3.10.0-1160.el7.x86_64
* g' B1 f& s/ i; d' G; \ Operating System: CentOS Linux 7 (Core)
OSType: linux
# U+ x; V& @# p9 y Architecture: x86_64
, n% p) x' j( A* t8 i CPUs: 16
) s# d; F9 M7 G) T2 t7 E: A( a0 t Total Memory: 15.51GiB
: l' ?" k' v! i  w; v: | Name: openstack.novalocal
# y; x" p' Z! T" [8 s7 ~$ Y ID: IL2Z:QYIC:CVO4:DKSU:RAVA:ONC2:ZSBT:JLHA:FBWV:JY7W:E7SS:W7AA
Docker Root Dir: /var/lib/docker
0 J8 H  `6 g2 `% |+ R' `2 v/ j; m Debug Mode: false
* m/ Z. n- W$ b# F; |( D! c% z Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
0 E/ c8 O+ R4 K  192.168.0.75:4000
$ z: L- B- D" S6 `2 i9 H  k8 s  127.0.0.0/8
9 b1 u7 P. u0 E Live Restore Enabled: false
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