My problem is this, where can i find the mysql container? I have just said to marathon to rim a wordpress docker container, without specify mysql one. Il 26/apr/2016 17:39, "Aaron Carey" <[email protected]> ha scritto:
> If you run the wordpress container on a different host to the mysql > container and use --link on the command line, does that work? > > -- > > Aaron Carey > Production Engineer - Cloud Pipeline > Industrial Light & Magic > London > 020 3751 9150 > > ------------------------------ > *From:* Stefano Bianchi [[email protected]] > *Sent:* 26 April 2016 16:23 > *To:* [email protected] > *Subject:* RE: Launch docker container from Marathon UI > > Hi Aaron > Actually both mesos-dns and calico are running even though these > containers im running are not, yet, using the calico ipaddr specific in > json description. > So i guess it is a problem of bridging, i guess simply specify HOST option > on container field in Marathon UI > Il 26/apr/2016 16:59, "Aaron Carey" <[email protected]> ha scritto: > >> --link in docker should really be avoided when using marathon/mesos as it >> implies the containers are on the same host, but this will not always be >> the case when mesos schedules your containers (also I think it's being >> deprecated in docker anyway.. not sure though?). >> >> This problem looks like one of service discovery within the mesos >> cluster: how does one service contact the other when it doesn't know which >> host the other service may have landed on? >> >> There are several different solutions for service discovery, you can look >> into some like Project Calico to offer a network layer to docker or try dns >> based solutions like Mesos-dns or Consul (along with mesos-consul). I think >> marathon also has some concept of service discovery built in too if you use >> something like haproxy. >> >> I hope this helps! >> >> Aaron >> >> -- >> >> Aaron Carey >> Production Engineer - Cloud Pipeline >> Industrial Light & Magic >> London >> 020 3751 9150 >> >> ------------------------------ >> *From:* June Taylor [[email protected]] >> *Sent:* 26 April 2016 15:22 >> *To:* [email protected] >> *Subject:* Re: Launch docker container from Marathon UI >> >> Stefano, >> >> The docker run flag --link is intended to connect the container to >> another running container. I do not know how this would operate in >> marathon. Perhaps it would be an application group which starts up the >> mysql docker image first, then the Wordpress docker image after it. >> >> >> Thanks, >> June Taylor >> System Administrator, Minnesota Population Center >> University of Minnesota >> >> On Tue, Apr 26, 2016 at 9:20 AM, Stefano Bianchi <[email protected]> >> wrote: >> >>> Thanks *Rad* Gruchalski, actually i'm trying to make a json file that >>> "translate" this command in marathon: >>> >>> docker run --name some-wordpress --link some-mysql:mysql -d wordpress >>> >>> i guess the error is relate to the fact that i'm not specifying --link >>> some-mysql:mysql >>> My problem is that i don't know how to do that, i tried to fill >>> environment variable fields: >>> >>> Key = link >>> Value = some-mysql:mysql >>> >>> But in this way the app does not work as well. How can i configure these >>> env variables? >>> >>> 2016-04-26 16:01 GMT+02:00 Rad Gruchalski <[email protected]>: >>> >>>> It says exactly what the problem is. >>>> >>>> Start a marathon task with correct environment variables in env and you >>>> will be fine. >>>> >>>> Best regards, >>>> Radek Gruchalski >>>> [email protected] <[email protected]> >>>> de.linkedin.com/in/radgruchalski/ >>>> >>>> >>>> *Confidentiality: *This communication is intended for the above-named >>>> person and may be confidential and/or legally privileged. >>>> If it has come to you in error you must take no action based on it, nor >>>> must you copy or show it to anyone; please delete/destroy and inform the >>>> sender immediately. >>>> >>>> On Tuesday, 26 April 2016 at 15:56, Stefano Bianchi wrote: >>>> >>>> jupyter is working fine. >>>> i tried to run wordpress and i get this error in stderr of mesos: >>>> >>>> error: missing WORDPRESS_DB_HOST and MYSQL_PORT_3306_TCP environment >>>> variables >>>> >>>> Did you forget to --link some_mysql_container:mysql or set an >>>> external db >>>> >>>> with -e WORDPRESS_DB_HOST=hostname:port? >>>> >>>> >>>> >>>> Some one of you know this issue? >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> 2016-04-26 15:51 GMT+02:00 Stefano Bianchi <[email protected]>: >>>> >>>> However thank you so much to all! >>>> >>>> 2016-04-26 15:22 GMT+02:00 Stefano Bianchi <[email protected]>: >>>> >>>> i found the answer by my self sorry if i disturbed you. >>>> >>>> 2016-04-26 15:19 GMT+02:00 Stefano Bianchi <[email protected]>: >>>> >>>> Now that it is running, how can i check the User Interface? >>>> >>>> >>>> 2016-04-26 15:18 GMT+02:00 Stefano Bianchi <[email protected]>: >>>> >>>> Yes, now it's running!!! June you are awesome!!! >>>> >>>> 2016-04-26 15:16 GMT+02:00 Stefano Bianchi <[email protected]>: >>>> >>>> i have done these 2 commands, now jupyter is in deploying in marathon, >>>> staging in mesos. >>>> Is there some additional configuration needed? >>>> >>>> 2016-04-26 15:13 GMT+02:00 Stefano Bianchi <[email protected]>: >>>> >>>> June i tried to run your json, but the task is waiting, and if starts >>>> it failed immediately. >>>> >>>> I guess because i did not type this commands: >>>> >>>> >>>> 1. >>>> >>>> echo 'docker,mesos' > /etc/mesos-slave/containerizers >>>> >>>> 2. >>>> >>>> $ echo '5mins' > /etc/mesos-slave/executor_registration_timeout >>>> >>>> >>>> Could it be the problem? >>>> >>>> 2016-04-26 15:02 GMT+02:00 Stefano Bianchi <[email protected]>: >>>> >>>> Thank you June taylor, it is axactly what i was intending. >>>> if it is not disturbing you, i try jupyter notebook as well, just to >>>> make some tests on how to launch marathon. >>>> stay tuned :) >>>> >>>> 2016-04-26 14:58 GMT+02:00 Stefano Bianchi <[email protected]>: >>>> >>>> thanks haosdent. >>>> actually i have run this kind of apps through rest api. >>>> Now i want learn how to laung docker files. I found this exaple: >>>> >>>> { >>>> "container": { >>>> "type": "DOCKER", >>>> "docker": { >>>> "network": "HOST", >>>> "image": "group/image" >>>> }, >>>> "volumes": [ >>>> { >>>> "containerPath": "/etc/a", >>>> "hostPath": "/var/data/a", >>>> "mode": "RO" >>>> }, >>>> { >>>> "containerPath": "/etc/b", >>>> "hostPath": "/var/data/b", >>>> "mode": "RW" >>>> } >>>> ] >>>> }} >>>> >>>> >>>> I am able to link the correspondent field in the marathon UI with what >>>> is written in this json. >>>> What i need to understand is, what i should write in: >>>> >>>> "image": "group/image" >>>> >>>> i mean, with what i have to replace group and image? >>>> For instance, if i would run wordpress container on docker hub what i >>>> should put replacing "group/image" ? >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> 2016-04-26 14:30 GMT+02:00 haosdent <[email protected]>: >>>> >>>> This is marathon REST API document: >>>> https://mesosphere.github.io/marathon/docs/rest-api.html#post-v2-apps >>>> . Usually we define a task json file and call the rest api. >>>> >>>> For example, create tasks.json which content is >>>> >>>> ``` >>>> { >>>> "id": "/test-sleep", >>>> "cmd": "sleep 200" >>>> } >>>> ``` >>>> >>>> And >>>> >>>> ``` >>>> curl -X POST -H "Content-type: application/json" >>>> http://${YOUR_MARATHON_ADDR}:8080/v2/apps >>>> -d @tasks.json >>>> ``` >>>> >>>> You could find more field definitions in their document. >>>> >>>> On Tue, Apr 26, 2016 at 8:24 PM, Stefano Bianchi <[email protected]> >>>> wrote: >>>> >>>> Hi guys >>>> >>>> i'm trying to follow the instructions on mesosphere documentation, but >>>> it is a little bit unlear for me that i am new to this world. >>>> i' would like to launch a wordpress container, present on docker hub >>>> here https://hub.docker.com/_/wordpress/ , from marathon UI but i >>>> don't understand the mechanism. >>>> I understood that i don't have to specify a command in "Command" field, >>>> but i don't know how to fill the dockers fields in marathon UI to launch >>>> wordpress container. >>>> Could you please help me or tell me where i can find a clearer >>>> documentation? >>>> >>>> Thanks. >>>> >>>> >>>> >>>> >>>> -- >>>> Best Regards, >>>> Haosdent Huang >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>> >>
