You can't multi-mount any volume that models as a block device, including GCE PD. It just isn't supported by any filesystems in common use. Unless you have something like NFS or gluster, this won't work.
On Tue, Feb 28, 2017 at 9:36 PM, Montassar Dridi <[email protected]> wrote: > I'm running multiple web pods for the same application and I have this > folder where clients can upload their files. > So I want that folder in this directory > /usr/local/tomcat/webapps/ROOT/uploadfiles to be shared between all the web > pods, > in case the client login to a random session within a specific web POD1 and > upload some files there, can find them next time he logs in to another > random session within another web POD2 > > On Wednesday, March 1, 2017 at 12:22:42 AM UTC-5, Tim Hockin wrote: >> >> Yeah, I'm trying to figure out what you are trying to achieve with a >> volume? Volumes don't share files that already exist, they are a >> place to put files. So you can copy it from somewhere in your image >> to that shared dir, or get it from git or something... >> >> On Tue, Feb 28, 2017 at 9:04 PM, Montassar Dridi >> <[email protected]> wrote: >> > so I should add the war file after the mount , no need for the >> > Dockerfile at >> > the beginning >> > >> > On Tuesday, February 28, 2017 at 11:59:14 PM UTC-5, Rodrigo Campos >> > wrote: >> >> >> >> Then your are mounting the volume where your war file is. >> >> >> >> Then, as mount works (nothing special about containers), you lose >> >> visibility of the war file and now see your volume. >> >> >> >> That will never work. >> >> >> >> On Wednesday, March 1, 2017, Montassar Dridi <[email protected]> >> >> wrote: >> >>> >> >>> I thought i did when I created the Dockerfile for the web application >> >>> docker image that I pushed to the google container registry and then >> >>> listed >> >>> it in my web application kubernetes depolyment yaml file : >> >>> >> >>> FROM tomcat:8-jre8 >> >>> ADD sample.war /usr/local/tomcat/webapps/ >> >>> CMD ["catalina.sh", "run"] >> >>> -------------------------- >> >>> spec: >> >>> containers: >> >>> - image: gcr.io/projectid/web-application-image:v >> >>> name: web-pod >> >>> ports: >> >>> - containerPort: 8080 >> >>> volumeMounts: >> >>> - name: persistent-storage >> >>> mountPath: /usr/local/tomcat/webapps >> >>> volumes: >> >>> - name: persistent-storage >> >>> persistentVolumeClaim: >> >>> claimName: web-pv-claim >> >>> >> >>> >> >>> On Tuesday, February 28, 2017 at 11:43:50 PM UTC-5, Tim Hockin wrote: >> >>>> >> >>>> Put some stuff in that directory? Where is the content coming from? >> >>>> How do you expect it to end up in that directory? >> >>>> >> >>>> On Tue, Feb 28, 2017 at 8:37 PM, Montassar Dridi >> >>>> <[email protected]> wrote: >> >>>> > right !! I got an empty directory !! >> >>>> > so what should i do ? >> >>>> > On Tuesday, February 28, 2017 at 11:30:58 PM UTC-5, Tim Hockin >> >>>> > wrote: >> >>>> >> >> >>>> >> If you mount an empty dir (be that a new PD or an emptyDir) you >> >>>> >> will, >> >>>> >> in fact, have an empty directory - which would give you exactly >> >>>> >> what >> >>>> >> you're seeing, wouldn't it? >> >>>> >> >> >>>> >> On Tue, Feb 28, 2017 at 6:44 PM, Montassar Dridi >> >>>> >> <[email protected]> wrote: >> >>>> >> > No errors is showing in the log pods !!! >> >>>> >> > I used the same volume structure for MYSQL database and was able >> >>>> >> > to >> >>>> >> > share >> >>>> >> > any file in var/lib/mysql directory between the database pods >> >>>> >> > with >> >>>> >> > no >> >>>> >> > issue >> >>>> >> > >> >>>> >> > On Tuesday, February 28, 2017 at 9:35:19 PM UTC-5, Rodrigo >> >>>> >> > Campos >> >>>> >> > wrote: >> >>>> >> >> >> >>>> >> >> But what is the error kubernetes shows in kubectl pod describe? >> >>>> >> >> What >> >>>> >> >> about >> >>>> >> >> the containers logs? Etc. This is a crucial part, nothing can't >> >>>> >> >> really >> >>>> >> >> be >> >>>> >> >> said without it. >> >>>> >> >> >> >>>> >> >> Also, as a general guidance, try to isolate the problem. Maybe >> >>>> >> >> try >> >>>> >> >> running >> >>>> >> >> an example for using volumes (that maybe use a public docker >> >>>> >> >> image), to >> >>>> >> >> understand how to use them first. Also, you may want to run >> >>>> >> >> just a >> >>>> >> >> sleep or >> >>>> >> >> something and connect to the pod and see what's there, etc. >> >>>> >> >> >> >>>> >> >> On Tuesday, February 28, 2017, Montassar Dridi >> >>>> >> >> <[email protected]> >> >>>> >> >> wrote: >> >>>> >> >>> >> >>>> >> >>> I used the emptyDir...get the same error >> >>>> >> >>> >> >>>> >> >>> On Tuesday, February 28, 2017 at 8:45:19 PM UTC-5, Montassar >> >>>> >> >>> Dridi >> >>>> >> >>> wrote: >> >>>> >> >>>> >> >>>> >> >>>> I'm using Google Cloud Platform container engine and Google >> >>>> >> >>>> persistent >> >>>> >> >>>> disk as persistent volume >> >>>> >> >>>> apiVersion: v1 >> >>>> >> >>>> kind: PersistentVolumeClaim >> >>>> >> >>>> metadata: >> >>>> >> >>>> name: web-pv-claim >> >>>> >> >>>> labels: >> >>>> >> >>>> name: web-pod >> >>>> >> >>>> version: v1 >> >>>> >> >>>> spec: >> >>>> >> >>>> accessModes: >> >>>> >> >>>> - ReadWriteOnce >> >>>> >> >>>> resources: >> >>>> >> >>>> requests: >> >>>> >> >>>> storage: 10Gi >> >>>> >> >>>> ------------------ >> >>>> >> >>>> spec: >> >>>> >> >>>> containers: >> >>>> >> >>>> - image: gcr.io/projectid/demo:v1 >> >>>> >> >>>> name: web-pod >> >>>> >> >>>> ports: >> >>>> >> >>>> - containerPort: 8080 >> >>>> >> >>>> volumeMounts: >> >>>> >> >>>> - name: persistent-storage >> >>>> >> >>>> mountPath: /usr/local/tomcat/webapps >> >>>> >> >>>> volumes: >> >>>> >> >>>> - name: persistent-storage >> >>>> >> >>>> persistentVolumeClaim: >> >>>> >> >>>> claimName: web-pv-claim >> >>>> >> >>>> volumes: >> >>>> >> >>>> - name: web-persistent-storage >> >>>> >> >>>> persistentVolumeClaim: >> >>>> >> >>>> claimName: web-pv-claim >> >>>> >> >>>> >> >>>> >> >>>> I get this error from the browser >> >>>> >> >>>> >> >>>> >> >>>> This page can’t be found >> >>>> >> >>>> >> >>>> >> >>>> No webpage was found for the web address: >> >>>> >> >>>> https://35.185.13.141/ >> >>>> >> >>>> >> >>>> >> >>>> HTTP ERROR 404 >> >>>> >> >>>> >> >>>> >> >>>> On Tuesday, February 28, 2017 at 8:24:22 PM UTC-5, Rodrigo >> >>>> >> >>>> Campos >> >>>> >> >>>> wrote: >> >>>> >> >>>>> >> >>>> >> >>>>> Also, if you just want to share a folder, you can use an >> >>>> >> >>>>> emptyDir. >> >>>> >> >>>>> It >> >>>> >> >>>>> really >> >>>> >> >>>>> depends on what you want, what you should use. But as Tim >> >>>> >> >>>>> says, >> >>>> >> >>>>> more >> >>>> >> >>>>> info is >> >>>> >> >>>>> definitely needed to *try* to help. >> >>>> >> >>>>> >> >>>> >> >>>>> Please make sure to see log messages, read docs, etc. And >> >>>> >> >>>>> then, >> >>>> >> >>>>> if >> >>>> >> >>>>> not >> >>>> >> >>>>> working, >> >>>> >> >>>>> ask again with a more clear picture. Without a single error >> >>>> >> >>>>> shown, >> >>>> >> >>>>> not >> >>>> >> >>>>> even the >> >>>> >> >>>>> claims, cloud provider, etc. is really hard to help :-( >> >>>> >> >>>>> >> >>>> >> >>>>> >> >>>> >> >>>>> On Tue, Feb 28, 2017 at 05:19:19PM -0800, 'Tim Hockin' via >> >>>> >> >>>>> Kubernetes >> >>>> >> >>>>> user discussion and Q&A wrote: >> >>>> >> >>>>> > Not enough information: What cloud environment? What does >> >>>> >> >>>>> > the PV >> >>>> >> >>>>> > claim object look like? What does "doesn't load" mean? >> >>>> >> >>>>> > >> >>>> >> >>>>> > On Tue, Feb 28, 2017 at 5:14 PM, Montassar Dridi >> >>>> >> >>>>> > <[email protected]> wrote: >> >>>> >> >>>>> > > Hello!! >> >>>> >> >>>>> > > The Dockerfile for my web application image, that I >> >>>> >> >>>>> > > deployed >> >>>> >> >>>>> > > within >> >>>> >> >>>>> > > Kubernetes, looks like this : >> >>>> >> >>>>> > > FROM tomcat:8-jre8 >> >>>> >> >>>>> > > ADD sample.war /usr/local/tomcat/webapps/ >> >>>> >> >>>>> > > CMD ["catalina.sh", "run"] >> >>>> >> >>>>> > > >> >>>> >> >>>>> > > It works fine without volumes!! >> >>>> >> >>>>> > > But when I try something like the script below, so I can >> >>>> >> >>>>> > > include >> >>>> >> >>>>> > > volumes, my >> >>>> >> >>>>> > > website doesn't load : >> >>>> >> >>>>> > > spec: >> >>>> >> >>>>> > > containers: >> >>>> >> >>>>> > > - image: gcr.io/projectid/demo:v1 >> >>>> >> >>>>> > > name: web-pod >> >>>> >> >>>>> > > ports: >> >>>> >> >>>>> > > - containerPort: 8080 >> >>>> >> >>>>> > > volumeMounts: >> >>>> >> >>>>> > > - name: persistent-storage >> >>>> >> >>>>> > > mountPath: /usr/local/tomcat/webapps >> >>>> >> >>>>> > > volumes: >> >>>> >> >>>>> > > - name: persistent-storage >> >>>> >> >>>>> > > persistentVolumeClaim: >> >>>> >> >>>>> > > claimName: web-pv-claim >> >>>> >> >>>>> > > >> >>>> >> >>>>> > > I just wanna share a folder between my web pods ?!?! 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