docker network —help

  1. Commands:
  2.   connect     Connect a container to a network
  3.   create      Create a network
  4.   disconnect  Disconnect a container from a network
  5.   inspect     Display detailed information on one or more networks
  6.   ls          List networks
  7.   prune       Remove all unused networks
  8.   rm          Remove one or more networks

docker network create —help

  1. Options:
  2.       --attachable           Enable manual container attachment
  3.       --aux-address map      Auxiliary IPv4 or IPv6 addresses used by Network driver (default map[])
  4.       --config-from string   The network from which to copy the configuration
  5.       --config-only          Create a configuration only network
  6.   -d, --driver string        Driver to manage the Network (default "bridge")
  7.       --gateway strings      IPv4 or IPv6 Gateway for the master subnet   # 网关
  8.       --ingress              Create swarm routing-mesh network
  9.       --internal             Restrict external access to the network
  10.       --ip-range strings     Allocate container ip from a sub-range
  11.       --ipam-driver string   IP Address Management Driver (default "default")
  12.       --ipam-opt map         Set IPAM driver specific options (default map[])
  13.       --ipv6                 Enable IPv6 networking
  14.       --label list           Set metadata on a network
  15.   -o, --opt map              Set driver specific options (default map[])
  16.       --scope string         Control the network's scope
  17.       --subnet strings       Subnet in CIDR format that represents a network segment  #子网

创建网络

  1. # --driver bridge 
  2. # --subnet 192.168.0.0/16
  3. # --gateway 192.168.0.1
  5. docker network create --driver bridge --subnet 192.168.0.0/16 --gateway 192.168.0.1 mynet
  6. 0096a971fd2c66400e53cbae5e53eceedc2f90d5685917e9534640a3535c0ef1
  8. # 查看网卡
  9. [root@--- ~]# ip addr
  10. 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
  11.     link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
  12.     inet 127.0.0.1/8 scope host lo
  13.        valid_lft forever preferred_lft forever
  14. 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
  15.     link/ether 00:16:3e:0a:00:34 brd ff:ff:ff:ff:ff:ff
  16.     inet 172.31.81.32/20 brd 172.31.95.255 scope global dynamic eth0
  17.        valid_lft 291870572sec preferred_lft 291870572sec
  18. 3: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default 
  19.     link/ether 02:42:a4:2f:c5:62 brd ff:ff:ff:ff:ff:ff
  20.     inet 172.17.0.1/16 brd 172.17.255.255 scope global docker0
  21.        valid_lft forever preferred_lft forever
  22. 140: br-799426d70aa2: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default 
  23.     link/ether 02:42:7f:01:1d:00 brd ff:ff:ff:ff:ff:ff
  24.     inet 172.18.0.1/16 brd 172.18.255.255 scope global br-799426d70aa2     # test-network
  25.        valid_lft forever preferred_lft forever
  26. 176: br-0096a971fd2c: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default 
  27.     link/ether 02:42:d9:14:c1:d3 brd ff:ff:ff:ff:ff:ff
  28.     inet 192.168.0.1/16 brd 192.168.255.255 scope global br-0096a971fd2c   # mynet 
  29.        valid_lft forever preferred_lft forever
  31. [root@--- ~]# docker network ls
  32. NETWORK ID     NAME           DRIVER    SCOPE
  33. feafa30d4051   bridge         bridge    local
  34. e8bf4fced9e2   host           host      local
  35. 0096a971fd2c   mynet          bridge    local  # 自定义bridge网桥
  36. 6263db0933b9   none           null      local
  37. 799426d70aa2   test-network   bridge    local
  38. [root@--- ~]# docker network inspect 0096a971fd2c
  39. [
  40.     {
  41.         "Name": "mynet",
  42.         "Id": "0096a971fd2c66400e53cbae5e53eceedc2f90d5685917e9534640a3535c0ef1",
  43.         "Created": "2021-10-04T10:18:09.113847736+08:00",
  44.         "Scope": "local",
  45.         "Driver": "bridge",
  46.         "EnableIPv6": false,
  47.         "IPAM": {
  48.             "Driver": "default",
  49.             "Options": {},
  50.             "Config": [
  51.                 {
  52.                     "Subnet": "192.168.0.0/16",   # mynet 子网
  53.                     "Gateway": "192.168.0.1"      # mynet 网关
  54.                 }
  55.             ]
  56.         },
  57.         "Internal": false,
  58.         "Attachable": false,
  59.         "Ingress": false,
  60.         "ConfigFrom": {
  61.             "Network": ""
  62.         },
  63.         "ConfigOnly": false,
  64.         "Containers": {},
  65.         "Options": {},
  66.         "Labels": {}
  67.     }
  68. ]

启动容器，并加入mynet网络

  1. # 1、 启动 mynet-centos01, mynet-tomcat01 并加入mynet网络
  2. docker run -it -P --name mynet-tomcat01 --net mynet tomcat
  3. docker run -it -P --name mynet-centos01 --net mynet centos
  5. # 2、查看mynet网桥信息
  6. docker network inspect 0096
  7. [
  8.     {
  9.         "Name": "mynet",
  10.         "Id": "0096a971fd2c66400e53cbae5e53eceedc2f90d5685917e9534640a3535c0ef1",
  11.         "Created": "2021-10-04T10:18:09.113847736+08:00",
  12.         "Scope": "local",
  13.         "Driver": "bridge",
  14.         "EnableIPv6": false,
  15.         "IPAM": {
  16.             "Driver": "default",
  17.             "Options": {},
  18.             "Config": [
  19.                 {
  20.                     "Subnet": "192.168.0.0/16",
  21.                     "Gateway": "192.168.0.1"
  22.                 }
  23.             ]
  24.         },
  25.         "Internal": false,
  26.         "Attachable": false,
  27.         "Ingress": false,
  28.         "ConfigFrom": {
  29.             "Network": ""
  30.         },
  31.         "ConfigOnly": false,
  32.         "Containers": {
  33.             "2fac920eebd505794c4a27ef4efdf531d32805e8663bded93a473bd28236bc27": {
  34.                 "Name": "mynet-centos01",
  35.                 "EndpointID": "3aff0752e641651a446ec490faa000812417855739086b2edb584ac2a95a26dd",
  36.                 "MacAddress": "02:42:c0:a8:00:02",
  37.                 "IPv4Address": "192.168.0.2/16",
  38.                 "IPv6Address": ""
  39.             },
  40.             "3dceda051252b6970fe2156bac7710ba6489a97aac68c49b1c85a2f130d0556f": {
  41.                 "Name": "mynet-tomcat01",
  42.                 "EndpointID": "9f52b19493d35c48fe9b33a319de5dbe54c50de1a5d049103cb4e39bfe645f1b",
  43.                 "MacAddress": "02:42:c0:a8:00:03",
  44.                 "IPv4Address": "192.168.0.3/16",
  45.                 "IPv6Address": ""
  46.             }
  47.         },
  48.         "Options": {},
  49.         "Labels": {}
  50.     }
  51. ]
  53. # 3、进入mynet-centos01 测试连接 mynet-tomcat01
  54. # 发现通过容器ip和容器名都可以连接
  55. [root@--- ~]# docker exec -it 2fac920eebd5 /bin/sh
  56. sh-4.4# ping
  57. sh-4.4# ping 192.168.0.3   # 通过容器ip连接
  58. PING 192.168.0.3 (192.168.0.3) 56(84) bytes of data.
  59. 64 bytes from 192.168.0.3: icmp_seq=1 ttl=64 time=0.140 ms
  60. 64 bytes from 192.168.0.3: icmp_seq=2 ttl=64 time=0.110 ms
  61. ^C
  62. --- 192.168.0.3 ping statistics ---
  63. 4 packets transmitted, 4 received, 0% packet loss, time 3000ms
  64. rtt min/avg/max/mdev = 0.110/0.121/0.140/0.016 ms
  65. sh-4.4# ping mynet-tomcat01   # 通过容器名连接
  66. PING mynet-tomcat01 (192.168.0.3) 56(84) bytes of data.
  67. 64 bytes from mynet-tomcat01.mynet (192.168.0.3): icmp_seq=1 ttl=64 time=0.078 ms
  68. 64 bytes from mynet-tomcat01.mynet (192.168.0.3): icmp_seq=2 ttl=64 time=0.131 ms
  69. ^C
  70. --- mynet-tomcat01 ping statistics ---
  71. 3 packets transmitted, 3 received, 0% packet loss, time 2001ms
  72. rtt min/avg/max/mdev = 0.078/0.110/0.131/0.026 ms
  73. sh-4.4#

思考问题： 其它网络下的容器可以直接访问mynet网络下的容器吗？ 答案：不可以 解决方法： 让别的网络下的容器加入到mynet网络下

image.png

实现容器互联

其它网络下的容器加入mynet网络，实现一个容器两个ip地址

网络集群

  1. # 1、加入网络
  2. docker network connect mynet centos01
  3. # 2、查看mynet网络
  4. [root@--- ~]# docker network inspect 0096
  5. [
  6.     {
  7.         "Name": "mynet",
  8.         "Id": "0096a971fd2c66400e53cbae5e53eceedc2f90d5685917e9534640a3535c0ef1",
  9.         "Created": "2021-10-04T10:18:09.113847736+08:00",
  10.         "Scope": "local",
  11.         "Driver": "bridge",
  12.         "EnableIPv6": false,
  13.         "IPAM": {
  14.             "Driver": "default",
  15.             "Options": {},
  16.             "Config": [
  17.                 {
  18.                     "Subnet": "192.168.0.0/16",
  19.                     "Gateway": "192.168.0.1"
  20.                 }
  21.             ]
  22.         },
  23.         "Internal": false,
  24.         "Attachable": false,
  25.         "Ingress": false,
  26.         "ConfigFrom": {
  27.             "Network": ""
  28.         },
  29.         "ConfigOnly": false,
  30.         "Containers": {
  31.             "2fac920eebd505794c4a27ef4efdf531d32805e8663bded93a473bd28236bc27": {
  32.                 "Name": "mynet-centos01",
  33.                 "EndpointID": "3aff0752e641651a446ec490faa000812417855739086b2edb584ac2a95a26dd",
  34.                 "MacAddress": "02:42:c0:a8:00:02",
  35.                 "IPv4Address": "192.168.0.2/16",
  36.                 "IPv6Address": ""
  37.             },
  38.             "3dceda051252b6970fe2156bac7710ba6489a97aac68c49b1c85a2f130d0556f": {
  39.                 "Name": "mynet-tomcat01",
  40.                 "EndpointID": "9f52b19493d35c48fe9b33a319de5dbe54c50de1a5d049103cb4e39bfe645f1b",
  41.                 "MacAddress": "02:42:c0:a8:00:03",
  42.                 "IPv4Address": "192.168.0.3/16",
  43.                 "IPv6Address": ""
  44.             },
  45.             "cb1922b95b9316d129b54f3545fad9729092926e10a1d5517f8928db42706151": {
  46.                 "Name": "centos01",
  47.                 "EndpointID": "0ba210710980230079b17d9bfa360bcee10a310ac7ee88c4e0174c4c6cc425cf",
  48.                 "MacAddress": "02:42:c0:a8:00:04",
  49.                 "IPv4Address": "192.168.0.4/16",   # 新加入的centos01容器
  50.                 "IPv6Address": ""
  51.             }
  52.         },
  53.         "Options": {},
  54.         "Labels": {}
  55.     }
  56. ]
  57. [root@--- ~]# docker ps
  58. CONTAINER ID   IMAGE       COMMAND                  CREATED          STATUS          PORTS                     NAMES
  59. 3dceda051252   tomcat      "catalina.sh run"        18 minutes ago   Up 18 minutes   0.0.0.0:49164->8080/tcp   mynet-tomcat01
  60. 2fac920eebd5   centos      "/bin/bash"              19 minutes ago   Up 19 minutes                             mynet-centos01
  61. cb1922b95b93   centos      "/bin/bash"              13 hours ago     Up 2 hours                                centos01
  62. 29298987c51b   mysql:5.7   "docker-entrypoint.s…"   13 hours ago     Up 13 hours     3306/tcp, 33060/tcp       mysql01
  64. # 3、查看centos01的容器信息
  65. # 可以看到Networks下面存在mynet、test-network两个网络连接信息
  66. # 一个容器两个ip地址
  67. [root@--- ~]# docker inspect cb19
  68. [
  69.     {
  70.         "Id": "cb1922b95b9316d129b54f3545fad9729092926e10a1d5517f8928db42706151",
  71.         "Created": "2021-10-03T13:39:00.942877668Z",
  72.         "Path": "/bin/bash",
  73.         "Args": [],
  74.         "State": {
  75.             "Status": "running",
  76.             "Running": true,
  77.             "Paused": false,
  78.             "Restarting": false,
  79.             "OOMKilled": false,
  80.             "Dead": false,
  81.             "Pid": 759,
  82.             "ExitCode": 0,
  83.             "Error": "",
  84.             "StartedAt": "2021-10-04T00:48:39.302485163Z",
  85.             "FinishedAt": "2021-10-04T00:48:11.86395321Z"
  86.         },
  87.         "Image": "sha256:5d0da3dc976460b72c77d94c8a1ad043720b0416bfc16c52c45d4847e53fadb6",
  88.         "ResolvConfPath": "/var/lib/docker/containers/cb1922b95b9316d129b54f3545fad9729092926e10a1d5517f8928db42706151/resolv.conf",
  89.         "HostnamePath": "/var/lib/docker/containers/cb1922b95b9316d129b54f3545fad9729092926e10a1d5517f8928db42706151/hostname",
  90.         "HostsPath": "/var/lib/docker/containers/cb1922b95b9316d129b54f3545fad9729092926e10a1d5517f8928db42706151/hosts",
  91.         "LogPath": "/var/lib/docker/containers/cb1922b95b9316d129b54f3545fad9729092926e10a1d5517f8928db42706151/cb1922b95b9316d129b54f3545fad9729092926e10a1d5517f8928db42706151-json.log",
  92.         "Name": "/centos01",
  93.         "RestartCount": 0,
  94.         "Driver": "overlay2",
  95.         "Platform": "linux",
  96.         "MountLabel": "",
  97.         "ProcessLabel": "",
  98.         "AppArmorProfile": "",
  99.         "ExecIDs": [
  100.             "d39fc0fc13115437b06798b6fc532ed583b3e892dbf7d774bd0fdb624df1f451",
  101.             "d662b224c2328f3af7b6c50c1674180032e6a1aa52560f3b486b037389f0e222",
  102.             "55cf9726e50882f5c2312ccaa3d474f4efd451920ef3305bf3204a8dcb4d7d28",
  103.             "81f3a14ac90512b85e5e74778242b4c688976ee08283ca390726e230fea99e42",
  104.             "ac96a35a3d5275b00ae18868374518fa47d7b0d95b753686510e3a7881198284"
  105.         ],
  106.         "HostConfig": {
  107.             "Binds": null,
  108.             "ContainerIDFile": "",
  109.             "LogConfig": {
  110.                 "Type": "json-file",
  111.                 "Config": {}
  112.             },
  113.             "NetworkMode": "default",
  114.             "PortBindings": {},
  115.             "RestartPolicy": {
  116.                 "Name": "no",
  117.                 "MaximumRetryCount": 0
  118.             },
  119.             "AutoRemove": false,
  120.             "VolumeDriver": "",
  121.             "VolumesFrom": null,
  122.             "CapAdd": null,
  123.             "CapDrop": null,
  124.             "CgroupnsMode": "host",
  125.             "Dns": [],
  126.             "DnsOptions": [],
  127.             "DnsSearch": [],
  128.             "ExtraHosts": null,
  129.             "GroupAdd": null,
  130.             "IpcMode": "private",
  131.             "Cgroup": "",
  132.             "Links": null,
  133.             "OomScoreAdj": 0,
  134.             "PidMode": "",
  135.             "Privileged": false,
  136.             "PublishAllPorts": false,
  137.             "ReadonlyRootfs": false,
  138.             "SecurityOpt": null,
  139.             "UTSMode": "",
  140.             "UsernsMode": "",
  141.             "ShmSize": 67108864,
  142.             "Runtime": "runc",
  143.             "ConsoleSize": [
  144.                 0,
  145.                 0
  146.             ],
  147.             "Isolation": "",
  148.             "CpuShares": 0,
  149.             "Memory": 0,
  150.             "NanoCpus": 0,
  151.             "CgroupParent": "",
  152.             "BlkioWeight": 0,
  153.             "BlkioWeightDevice": [],
  154.             "BlkioDeviceReadBps": null,
  155.             "BlkioDeviceWriteBps": null,
  156.             "BlkioDeviceReadIOps": null,
  157.             "BlkioDeviceWriteIOps": null,
  158.             "CpuPeriod": 0,
  159.             "CpuQuota": 0,
  160.             "CpuRealtimePeriod": 0,
  161.             "CpuRealtimeRuntime": 0,
  162.             "CpusetCpus": "",
  163.             "CpusetMems": "",
  164.             "Devices": [],
  165.             "DeviceCgroupRules": null,
  166.             "DeviceRequests": null,
  167.             "KernelMemory": 0,
  168.             "KernelMemoryTCP": 0,
  169.             "MemoryReservation": 0,
  170.             "MemorySwap": 0,
  171.             "MemorySwappiness": null,
  172.             "OomKillDisable": false,
  173.             "PidsLimit": null,
  174.             "Ulimits": null,
  175.             "CpuCount": 0,
  176.             "CpuPercent": 0,
  177.             "IOMaximumIOps": 0,
  178.             "IOMaximumBandwidth": 0,
  179.             "MaskedPaths": [
  180.                 "/proc/asound",
  181.                 "/proc/acpi",
  182.                 "/proc/kcore",
  183.                 "/proc/keys",
  184.                 "/proc/latency_stats",
  185.                 "/proc/timer_list",
  186.                 "/proc/timer_stats",
  187.                 "/proc/sched_debug",
  188.                 "/proc/scsi",
  189.                 "/sys/firmware"
  190.             ],
  191.             "ReadonlyPaths": [
  192.                 "/proc/bus",
  193.                 "/proc/fs",
  194.                 "/proc/irq",
  195.                 "/proc/sys",
  196.                 "/proc/sysrq-trigger"
  197.             ]
  198.         },
  199.         "GraphDriver": {
  200.             "Data": {
  201.                 "LowerDir": "/var/lib/docker/overlay2/5bf033bfa1f6c088bd948a2d49f973f6062fc98d4acc5ee33ca4881137b55460-init/diff:/var/lib/docker/overlay2/d6e4be0166eac21b08ff7e34bb088bd7488086c5fd04603879424af35f8e6190/diff",
  202.                 "MergedDir": "/var/lib/docker/overlay2/5bf033bfa1f6c088bd948a2d49f973f6062fc98d4acc5ee33ca4881137b55460/merged",
  203.                 "UpperDir": "/var/lib/docker/overlay2/5bf033bfa1f6c088bd948a2d49f973f6062fc98d4acc5ee33ca4881137b55460/diff",
  204.                 "WorkDir": "/var/lib/docker/overlay2/5bf033bfa1f6c088bd948a2d49f973f6062fc98d4acc5ee33ca4881137b55460/work"
  205.             },
  206.             "Name": "overlay2"
  207.         },
  208.         "Mounts": [],
  209.         "Config": {
  210.             "Hostname": "cb1922b95b93",
  211.             "Domainname": "",
  212.             "User": "",
  213.             "AttachStdin": true,
  214.             "AttachStdout": true,
  215.             "AttachStderr": true,
  216.             "Tty": true,
  217.             "OpenStdin": true,
  218.             "StdinOnce": true,
  219.             "Env": [
  220.                 "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
  221.             ],
  222.             "Cmd": [
  223.                 "/bin/bash"
  224.             ],
  225.             "Image": "centos",
  226.             "Volumes": null,
  227.             "WorkingDir": "",
  228.             "Entrypoint": null,
  229.             "OnBuild": null,
  230.             "Labels": {
  231.                 "org.label-schema.build-date": "20210915",
  232.                 "org.label-schema.license": "GPLv2",
  233.                 "org.label-schema.name": "CentOS Base Image",
  234.                 "org.label-schema.schema-version": "1.0",
  235.                 "org.label-schema.vendor": "CentOS"
  236.             }
  237.         },
  238.         "NetworkSettings": {
  239.             "Bridge": "",
  240.             "SandboxID": "ac455100992ba8412440bbb5e166e42c5b927876129526e4a7d9365751821bda",
  241.             "HairpinMode": false,
  242.             "LinkLocalIPv6Address": "",
  243.             "LinkLocalIPv6PrefixLen": 0,
  244.             "Ports": {},
  245.             "SandboxKey": "/var/run/docker/netns/ac455100992b",
  246.             "SecondaryIPAddresses": null,
  247.             "SecondaryIPv6Addresses": null,
  248.             "EndpointID": "",
  249.             "Gateway": "",
  250.             "GlobalIPv6Address": "",
  251.             "GlobalIPv6PrefixLen": 0,
  252.             "IPAddress": "",
  253.             "IPPrefixLen": 0,
  254.             "IPv6Gateway": "",
  255.             "MacAddress": "",
  256.             "Networks": {
  257.                 "mynet": {
  258.                     "IPAMConfig": {},
  259.                     "Links": null,
  260.                     "Aliases": [
  261.                         "cb1922b95b93"
  262.                     ],
  263.                     "NetworkID": "0096a971fd2c66400e53cbae5e53eceedc2f90d5685917e9534640a3535c0ef1",
  264.                     "EndpointID": "0ba210710980230079b17d9bfa360bcee10a310ac7ee88c4e0174c4c6cc425cf",
  265.                     "Gateway": "192.168.0.1",
  266.                     "IPAddress": "192.168.0.4",
  267.                     "IPPrefixLen": 16,
  268.                     "IPv6Gateway": "",
  269.                     "GlobalIPv6Address": "",
  270.                     "GlobalIPv6PrefixLen": 0,
  271.                     "MacAddress": "02:42:c0:a8:00:04",
  272.                     "DriverOpts": {}
  273.                 },
  274.                 "test-network": {
  275.                     "IPAMConfig": {},
  276.                     "Links": null,
  277.                     "Aliases": [
  278.                         "cb1922b95b93"
  279.                     ],
  280.                     "NetworkID": "799426d70aa28b73b4a777c85b338186eafadd1558b13c43e07a9fd9a8b545e7",
  281.                     "EndpointID": "c5cac97189a8f9994ccd73ae9df1e0d28aa16dfde923dc241e2f3a3a4fda01b5",
  282.                     "Gateway": "172.18.0.1",
  283.                     "IPAddress": "172.18.0.3",
  284.                     "IPPrefixLen": 16,
  285.                     "IPv6Gateway": "",
  286.                     "GlobalIPv6Address": "",
  287.                     "GlobalIPv6PrefixLen": 0,
  288.                     "MacAddress": "02:42:ac:12:00:03",
  289.                     "DriverOpts": {}
  290.                 }
  291.             }
  292.         }
  293.     }
  294. ]

test-network网卡下的centos01访问mynet网卡下的mynet-centos01、mynet-tomcat01

容器ip和容器名都可以连接

  1. [root@--- ~]# docker exec -it cb19 /bin/bash
  2. [root@cb1922b95b93 /]# ping 192.168.0.3
  3. PING 192.168.0.3 (192.168.0.3) 56(84) bytes of data.
  4. 64 bytes from 192.168.0.3: icmp_seq=1 ttl=64 time=0.186 ms
  5. 64 bytes from 192.168.0.3: icmp_seq=2 ttl=64 time=0.123 ms
  6. ^C
  7. --- 192.168.0.3 ping statistics ---
  8. 7 packets transmitted, 7 received, 0% packet loss, time 6000ms
  9. rtt min/avg/max/mdev = 0.090/0.127/0.186/0.029 ms
  10. [root@cb1922b95b93 /]# ping mynet-centos01
  11. PING mynet-centos01 (192.168.0.2) 56(84) bytes of data.
  12. 64 bytes from mynet-centos01.mynet (192.168.0.2): icmp_seq=1 ttl=64 time=0.105 ms
  13. 64 bytes from mynet-centos01.mynet (192.168.0.2): icmp_seq=2 ttl=64 time=0.130 ms
  14. ^C
  15. --- mynet-centos01 ping statistics ---
  16. 3 packets transmitted, 3 received, 0% packet loss, time 2001ms
  17. rtt min/avg/max/mdev = 0.105/0.116/0.130/0.013 ms
  18. [root@cb1922b95b93 /]# ping mynet-tomcat01
  19. PING mynet-tomcat01 (192.168.0.3) 56(84) bytes of data.
  20. 64 bytes from mynet-tomcat01.mynet (192.168.0.3): icmp_seq=1 ttl=64 time=0.085 ms
  21. 64 bytes from mynet-tomcat01.mynet (192.168.0.3): icmp_seq=2 ttl=64 time=0.102 ms
  22. ^C
  23. --- mynet-tomcat01 ping statistics ---
  24. 2 packets transmitted, 2 received, 0% packet loss, time 1001ms
  25. rtt min/avg/max/mdev = 0.085/0.093/0.102/0.012 ms
  26. [root@cb1922b95b93 /]#