有人可以解释以下错误的含义吗/var/log/syslog？我不知道我是否选择了相关部分，日志中有更多信息。
Feb 4 10:57:51 chriad-VirtualBox dockerd[1313]: time="2019-02-04T10:57:51.039077089+01:00" level=warning msg="grpc: addrConn.createTransport failed to connect to {unix:///run/containerd/containerd.sock 0 <nil>}. Err :connection error: desc = \"transport: Error while dialing dial unix /run/containerd/containerd.sock: connect: connection refused\". Reconnecting..." module=grpc
Feb 4 10:57:51 chriad-VirtualBox dockerd[1313]: time="2019-02-04T10:57:51.039751889+01:00" level=warning msg="grpc: addrConn.createTransport failed to connect to {unix:///run/containerd/containerd.sock 0 <nil>}. Err :connection error: desc = \"transport: Error while dialing dial unix /run/containerd/containerd.sock: connect: connection refused\". Reconnecting..." module=grpc
Feb 4 10:57:51 chriad-VirtualBox dockerd[1313]: time="2019-02-04T10:57:51.039822044+01:00" level=error msg="failed to get event" error="rpc error: code = Unavailable desc = all SubConns are in TransientFailure, latest connection error: connection error: desc = \"transport: Error while dialing dial unix /run/containerd/containerd.sock: connect: connection refused\"" module=libcontainerd namespace=plugins.moby
而且这种情况持续了很长一段时间......
我该怎么做才能消除这个错误？
uname -a
Linux chriad-VirtualBox 4.15.0-45-generic #48-Ubuntu SMP Tue Jan 29 16:28:13 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux`
我使用 virtualbox 5.2.26。
systemctl | grep failed
● apport-autoreport.service loaded failed failed Process error reports when automatic reporting is enabled
● containerd.service loaded failed failed containerd container runtime
● vboxadd-service.service loaded failed failed vboxadd-service.service