I have created a Azure Container Instance using a yml file where in, I gave a command to run.
command:
- python
- Location to Python file inside the container
I have also attached the Azure File Share as volume so that the, output of the command will be copied to the volume. The container instance gets created successfully and the command runs but the output is not copied to Azure File Share. When i checked in Azure CLI, the status of container is succeeded and the state shows of container is in "waiting".
I tried connecting to the Container using "exec" command in iteractive mode but the terminal was blank for a couple of minutes and there was no response later.
az container exec -g RESOURCE_GROUP_NAME --name CONTAINER_NAME --exec-command "/bin/bash
How to connect to the container in interactive mode and why is command output not copied to Azure File Share ?
Add this header to your Python script
#!/usr/bin/python
and then just execute this script on the container:
az container exec -g RESOURCE_GROUP_NAME --name CONTAINER_NAME --exec-command "/root/your-python-script"
Related
I run these docker commands locally to copy a file to a volume, this works fine:
docker container create --name temp_container -v temp_vol:/target hello-world
docker cp somefile.txt temp_container:/target/.
Now I want to do the same, but with volumes located in Azure. I have an image azureimage that I pushed and it's located in Azure, and I need to access from the container a volume with a file that I have in my local disk.
I can create the volume in an Azure context like so:
docker context use azaci
docker volume create test-volume --storage-account mystorageaccount
But when I try to copy a file to the volume pointed by a container:
docker context use azaci
docker container create --name temp_container2 -v test-volume:/target azureimage
docker cp somefile.txt temp_container2:/target/.
I get that the container and copy commands cannot be executed in the Azure context:
Command "container" not available in current context (azaci), you can
use the "default" context to run this command
Command "cp" not available in current context (azaci), you can use
the "default" context to run this command
How to copy a file from my local disk to volume in Azure context? Do I have to upload it to Azure first? Do I have to copy it to the file share?
As I know, when you mount the Azure File Share to the ACI, then you should upload the files into the File Share and the files will exist in the container instance that you mount. You can use the Azure CLI command az storage file upload or AzCopy to upload the files.
The command docker cp aims to copy files/folders between a container and the local filesystem. But the File Share is in the Azure Storage, not local. And the container is also in the Azure ACI.
I'm trying to remotely interact with a container instance in Azure.
I've performed following steps:
Loaded local image on local registry
docker load -i ima.tar
Loggin in to remote ACR
docker login --username --password + login-server
Tagged the image
docker tag local-image:tag <login-server/repository-name:tag>
Pushed imaged
docker push <login-server/repository-name:tag>
If I try to run a command like this:
az container exec --resource-group myResourceGroup --name <name of cotainer group> --container-name <name of container app> --exec-command "/bin/bash"
I can successfully login to bash interactively.
My Goal is to process local file to the a remote ACI using the ACR image, something like this:
docker run -t -i --entrypoint=./executables/run.sh -v "%cd%"\..:/opt/test remote_image:tag
Is it there a way to do so? How can I run ACI e remote push file via AZ CLI?
Thx
For your purpose, I recommend you mount the Azure File Share to the ACI and then upload the files to the File Share. Finally, you can access the files in the File Share inside the ACI. Follow the steps here to mount the File Share.
My goal is to run a python script, which is passed to a docker container containing source code and dependencies. This is to be run using Azure container instances (ACI). On my home machine I can do this in docker (setting ENTRYPOINT or CMD to "python") with
docker run myimage "myscript.py"
provided I spin up the container from a directory containing myscript.py.
After some reading I thought a similar thing could be achieved on azure using az container create --command-line as indicated here. My container creation would be something like
az container create \
--resource-group myResourceGroup \
--name my-container \
--image myimage:latest \
--restart-policy Never \
--command-line "python 'myscript.py'"
However the container is unable to find myscript.py. I am using the Azure Cloud Shell. I have tried spinning up the container from a directory containing myscript.py, and I have also tried adding a file share with myscript.py inside. In both cases I get the error
python3: can't open file 'myscript.py': [Errno 2] No such file or
directory
I think I simply do not understand the containers and how they interact with the host directory structure on azure. Can anyone provide some suggestions or pointers to resources?
provided I spin up the container from a directory containing
myscript.py.
From where you issue the command to start an container instance does not matter at all. The files need to be present inside your image. Or you can also mount storage into it and read from there.
I am running an R Shiny app inside a container in Azure Container Instance. Via a DevOps pipeline whenever I change the source code of my App, I recreate the container in the Build pipeline and update the Container Instance via an Azure Cli command in the Release pipline via az container create and az container restart.
After spinning it up I need to run a bash command - namely, automatically adjusting a file within the created container.
In local Docker this would be
docker exec {containerName} /bin/bash -c "echo `"var1 = \`"val1`"`" >> /home/shiny/.Renviron"
This means: run a bash command in the container to push some text into the .Renviron file within the container.
Now the Azure Container Instance says you cannot pass command arguments for az container exec: https://learn.microsoft.com/en-us/azure/container-instances/container-instances-exec
How would you then in an automated build/release process in Azure go for building, releasing and configuring a container?
I do not want to set those values within the build pipeline as I want to use the same image for different staging areas setting those values accordingly.
Many thanks in advance for your help.
I am very new to azure container instances, so I may not understand your aims but it seems another way of achieving this:
I do not want to set those values within the build pipeline as I want
to use the same image for different staging areas setting those values
accordingly.
could be to modify your parameter values upon container creation using the --command-line flag mentioned here. Something like
az container create -g MyResourceGroup --name myapp --image myimage:latest --command-line "/bin/sh -c '/path to/myscript.sh val1 val2'"
in which myscript.sh runs your app with the indicated values.
Is it possible to execute command in a container which is running under Azure WebApp service by Docker Compose?
When I create single container by az container create ..., then it works.
But when I create set of containers by Docker compose script using az webapp create --multicontainer-config-type compose ..., then it does not work.
From logs I see that there is running container myWebApp_myContainer_1 so I try:
az container exec -g myResourceGroup -n myWebApp_myContainer_1 --exec-command "/bin/bash"
With this result:
The Resource 'Microsoft.ContainerInstance/containerGroups/myWebApp_myContainer_1'
under resource group 'myResourceGroup' was not found.
Then I try:
az container exec -g myResourceGroup -n myWebApp --container-name myWebApp_myContainer_1 --exec-command "/bin/bash"
With this result:
The Resource 'Microsoft.ContainerInstance/containerGroups/myWebApp' under resource group 'myResourceGroup' was not found.
Note that it is normally possible to execute commands in containers started by Docker compose script on local Docker (out of Azure).
Update I don't like to install SSH server into Docker images. It is a bad approach. I'm looking for a way of direct exec like az container exec does.
Thank you for any hint.
For your issue, when the web app created from a Docker image, it's just a web app, not a container. So you cannot use the command az container exec to connect to it.
If you really want to connect to the web app that created from a Docker image, there are two ways as I know to achieve it.
The one is that I describe in the comment, you should install the OpenSSH server in the Docker image. Then ssh into the web app from the port exposed to the Internet.
The other one as you wish is using the command az webapp remote-connection. For more details, you can read Open SSH session from remote shell.