MARATHON启动DOCKER时增加额外的启动参数

如果你用的ceph文件系统做你的后台存储，你就需要在docker  run的时候增加两个参数.

for example:

docker run -it –net=host -v /data:/mnt/ceph  –cap-add SYS_ADMIN –device /dev/fuse centos:7 /bin/bash

启动之后会在配置中找到这样的启动项：

“HostConfig”: { “Binds”: null, “CapAdd”: ["SYS_ADMIN"], “CapDrop”: null, “ContainerIDFile”: “”, “Devices”: [{"CgroupPermissions": "rwm","PathInContainer": "/dev/fuse","PathOnHost": "/dev/fuse"}], “Dns”: null, “DnsSearch”: null, “ExtraHosts”: null, “Links”: null, “LxcConf”: [], “NetworkMode”: “host”, “PortBindings”: {}, “Privileged”: false, “PublishAllPorts”: false, “RestartPolicy”: { “MaximumRetryCount”: 0, “Name”: “” }, “SecurityOpt”: null, “VolumesFrom”: null }

但是在Marathon启动app的时候怎么增加这些额外的参数呢：

{
    "id": "privileged-job",
    "container": {
        "docker": {
            "image": "mesosphere/inky",
            "privileged": true,
            "parameters": [
                { "key": "hostname", "value": "a.corp.org" },
                { "key": "volumes-from", "value": "another-container" },
                { "key": "lxc-conf", "value": "..." }
            ]
        },
        "type": "DOCKER",
        "volumes": []
    },
    "args": ["hello"],
    "cpus": 0.2,
    "mem": 32.0,
    "instances": 1
}

你可以像上面这样，就是这个parameters的参数，你只用key和value弄好，marathon就会在启动docker容器的时候携带好这里的参数，用法跟docker的cli没啥区别，很简单的。