Docker,\

Question

docker inspect my_app_net
[
    {
        "Name": "my_app_net",
        "Id": "e136b758e8009e0361168aa0ead14ec85973c8d4f93e65122c22a2ff18f5e61f",
        "Created": "2018-03-22T21:11:51.781623693+01:00",
        "Scope": "local",
        "Driver": "bridge",
        "EnableIPv6": false,
        "IPAM": {
            "Driver": "default",
            "Options": {},
            "Config": [
                {
                    "Subnet": "172.19.0.0/16",
                    "Gateway": "172.19.0.1"
                }
            ]
        },
        "Internal": false,
        "Attachable": false,
        "Ingress": false,
        "ConfigFrom": {
            "Network": ""
        },
        "ConfigOnly": false,
        "Containers": {
            "a966584cd491caff18b25fa347b738a0853e5195ac517b5fb26bb019a271fc10": {
                "Name": "new_pizd",
                "EndpointID": "fdbacbbd564aeacccc57367dd082232e0498976ca485597b6ba8f6c82a0d4240",
                "MacAddress": "02:42:ac:13:00:03",
                "IPv4Address": "172.19.0.3/16",
                "IPv6Address": ""
            },
            "b36f350efca1f2e79bef8027a32f992021091fdd701e4d55d98af78984072150": {
                "Name": "new_nginx2",
                "EndpointID": "38731d2618aba0a7c63debd3b30a4c9b530d83a4fddbda97cdd2498298007120",
                "MacAddress": "02:42:ac:13:00:02",
                "IPv4Address": "172.19.0.2/16",
                "IPv6Address": ""
            }
        },
        "Options": {},
        "Labels": {}
    }
]

docker container exec -it new_pizd ping new_nginx2 
OCI runtime exec failed: exec failed: container_linux.go:348: starting container process caused "exec: \"ping\": executable file not found in $PATH": unknown

docker exec -ti new_nginx2 echo $PATH
/home/milenko/eclipse:/home/milenko/miniconda3/bin:/home/milenko/bin:/home/milenko/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin

milenko@milenko-System-Product-Name:~$ docker exec -ti new_nginx2 bash
root@b36f350efca1:/# echo $PATH
/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin

我检查了垃圾箱，里面没有ping

root@b36f350efca1:/bin# ls ping*
ls: cannot access 'ping*': No such file or directory

Answer 1

输出

OCI runtime exec failed: exec failed: container_linux.go:348: starting container process caused "exec: \"ping\": executable file not found in $PATH": unknown

表示找不到ping命令($PATH配置错误，或ping不可用，或其他原因）。

如何检查docker变量$PATH？

/home/user/.bin:/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games

若要打开交互式控制台以检查/处理容器，请运行$docker exec-ti bash 。

更新

我检查了垃圾箱，里面没有ping

$ apt-get update
$ apt-get install iputils-ping