I am able to use the below JSON through POSTMAN to run my Databricks notebook.
I want to be able to give a name to the cluster that is created through the "new_cluster" options.
Is there any such option available?
{
"tasks": [
{
"task_key": "Job_Run_Api",
"description": "To see how the run and trigger api works",
"new_cluster": {
"spark_version": "9.0.x-scala2.12",
"node_type_id": "Standard_E8as_v4",
"num_workers": "1",
"custom_tags": {
"Workload": "Job Run Api"
}
},
"libraries": [
{
"maven": {
"coordinates": "net.sourceforge.jtds:jtds:1.3.1"
}
}
],
"notebook_task": {
"notebook_path": "/Shared/POC/Job_Run_Api_POC",
"base_parameters": {
"name": "Junaid Khan"
}
},
"timeout_seconds": 2100,
"max_retries": 0
}
],
"job_clusters": null,
"run_name": "RUN_API_TEST",
"timeout_seconds": 2100
}
When the above API call is done, the cluster created has a name like "job-5975-run-2" and that is not super explanatory.
I have tried to use the tag "cluster_name" inside the "new_cluster" tag but I got an error that I can't do that, like this:
{
"error_code": "INVALID_PARAMETER_VALUE",
"message": "Cluster name should not be provided for jobs."
}
Appreciate any help here
Cluster name for jobs are automatically generated and can't be changed. If you want somehow track specific jobs, use tags.
P.S. If you want to have more "advanced" tracking capability, look onto Overwatch project.
I am currently trying to update a pipeline variable at the scope, DEV however, I am having hard time updating that variable. Is it possible to update the variable at a scope other than "Release"? If so, how? Below is the code that I used and the error that I received.
let reqLink = ' https://vsrm.dev.azure.com/'+ organization +'/'+project+'/_apis/release/releases?api-version=5.1';
let reqBody = {
"definitionId": definitionId,
"variables": {
"someVar":
{
"value": "foo",
"scope": "DEV"
}
}
};
sendHttpRequest('POST',reqLink,reqBody).then(response => {
let data = JSON.parse(response);
console.log(data);
});
This is the error that I am receiving:
{"$id":"1","innerException":null,"message":"Variable(s) someVar do not exist in the release pipeline at scope: Release
Scoped variables are defined not on the root level. But on stage level. So you must modify this here:
Here you have variable SomeVer scoped to Stage 1. The easiest way to achieve this will be hit endpoint with GET, manipulate on json and hit endpoint with PUT.
And what I noticed you are hiting release/releases whereas you should hit rather specific release release/releases/{releaseId}. Or maybe your goal is to update definition itself?
Is it possible to update the variable at a scope other than "Release"? If so, how?
The answer is yes.
The REST API you use is to create a release, if you want to update a release pipeline, using:
PUT https://vsrm.dev.azure.com/{organization}/{project}/_apis/release/definitions?api-version=6.0-preview.4
The request body of the REST API may need detailed information of the release pipeline. Use the following REST API to get it.
GET https://vsrm.dev.azure.com/{organization}/{project}/_apis/release/definitions/{definitionId}?api-version=6.0-preview.4
Then you can modify its response body and use it as the request body of the first REST API.
The property variables doesn't have a property called scope. If you want to update a variable from 'Release' scope to a stage scope, you need to delete the variable's original definition in variables and redefinite it in target environment. Here is an example.
Original script:
{
...
"variables": {
"somevar": {
"value": "foo"
}
},
...
};
The modified script:
{
...
"environments": [
{
"id": {stage id},
"name": DEV
...
"variables": {
"somevar": {
"value": "foo",
},
...
}
],
...
"variables": {},
...
};
Here is the summary: To change the scope of a variable, just move the variable definition to target scope.
I use circleci to build and push the application to aws. I have now managed to create and register a new task definition in the circleci config using the aws cli. This works well. The problem or case i´am having is how do I overwrite the placeholder values using the cli?
Here is how i read the task definition:
aws ecs register-task-definition --cli-input-json file://.circleci/taskdefinition.json
The task definition file:
{
"containerDefinitions": [
{
"cpu": 10,
"environment": [
{
"name": "Secret_api_key",
"value": "placeholder_value"
}
],
"image": "<Image>",
"name": "app-dev"
}
],
"placementConstraints": [],
"memory": "512",
"family": "pp-dev",
"networkMode": "bridge"
}
What I want to know is, how do I update the placeholder_value which I have retrieved from aws secrets manager?
Use sed to replace the placeholders with secret valuables from private environment variables.
In Cloudformation I have two stacks (one nested).
Nested stack "ec2-setup":
{
"AWSTemplateFormatVersion" : "2010-09-09",
"Parameters" : {
// (...) some parameters here
"userData" : {
"Description" : "user data to be passed to instance",
"Type" : "String",
"Default": ""
}
},
"Resources" : {
"EC2Instance" : {
"Type" : "AWS::EC2::Instance",
"Properties" : {
"UserData" : { "Ref" : "userData" },
// (...) some other properties here
}
}
},
// (...)
}
Now in my main template I want to refer to nested template presented above and pass a bash script using the userData parameter. Additionally I do not want to inline the content of user data script because I want to reuse it for few ec2 instances (so I do not want to duplicate the script each time I declare ec2 instance in my main template).
I tried to achieve this by setting the content of the script as a default value of a parameter:
{
"AWSTemplateFormatVersion": "2010-09-09",
"Parameters" : {
"myUserData": {
"Type": "String",
"Default" : { "Fn::Base64" : { "Fn::Join" : ["", [
"#!/bin/bash \n",
"yum update -y \n",
"# Install the files and packages from the metadata\n",
"echo 'tralala' > /tmp/hahaha"
]]}}
}
},
(...)
"myEc2": {
"Type": "AWS::CloudFormation::Stack",
"Properties": {
"TemplateURL": "s3://path/to/ec2-setup.json",
"TimeoutInMinutes": "10",
"Parameters": {
// (...)
"userData" : { "Ref" : "myUserData" }
}
But I get following error while trying to launch stack:
"Template validation error: Template format error: Every Default
member must be a string."
The error seems to be caused by the fact that the declaration { Fn::Base64 (...) } is an object - not a string (although it results in returning base64 encoded string).
All works ok, if I paste my script directly into to the parameters section (as inline script) when calling my nested template (instead of reffering to string set as parameter):
"myEc2": {
"Type": "AWS::CloudFormation::Stack",
"Properties": {
"TemplateURL": "s3://path/to/ec2-setup.json",
"TimeoutInMinutes": "10",
"Parameters": {
// (...)
"userData" : { "Fn::Base64" : { "Fn::Join" : ["", [
"#!/bin/bash \n",
"yum update -y \n",
"# Install the files and packages from the metadata\n",
"echo 'tralala' > /tmp/hahaha"
]]}}
}
but I want to keep the content of userData script in a parameter/variable to be able to reuse it.
Any chance to reuse such a bash script without a need to copy/paste it each time?
Here are a few options on how to reuse a bash script in user-data for multiple EC2 instances defined through CloudFormation:
1. Set default parameter as string
Your original attempted solution should work, with a minor tweak: you must declare the default parameter as a string, as follows (using YAML instead of JSON makes it possible/easier to declare a multi-line string inline):
AWSTemplateFormatVersion: "2010-09-09"
Parameters:
myUserData:
Type: String
Default: |
#!/bin/bash
yum update -y
# Install the files and packages from the metadata
echo 'tralala' > /tmp/hahaha
(...)
Resources:
myEc2:
Type: AWS::CloudFormation::Stack
Properties
TemplateURL: "s3://path/to/ec2-setup.yml"
TimeoutInMinutes: 10
Parameters:
# (...)
userData: !Ref myUserData
Then, in your nested stack, apply any required intrinsic functions (Fn::Base64, as well as Fn::Sub which is quite helpful if you need to apply any Ref or Fn::GetAtt functions within your user-data script) within the EC2 instance's resource properties:
AWSTemplateFormatVersion: "2010-09-09"
Parameters:
# (...) some parameters here
userData:
Description: user data to be passed to instance
Type: String
Default: ""
Resources:
EC2Instance:
Type: AWS::EC2::Instance
Properties:
UserData:
"Fn::Base64":
"Fn::Sub": !Ref userData
# (...) some other properties here
# (...)
2. Upload script to S3
You can upload your single Bash script to an S3 bucket, then invoke the script by adding a minimal user-data script in each EC2 instance in your template:
AWSTemplateFormatVersion: "2010-09-09"
Parameters:
# (...) some parameters here
ScriptBucket:
Description: S3 bucket containing user-data script
Type: String
ScriptKey:
Description: S3 object key containing user-data script
Type: String
Resources:
EC2Instance:
Type: AWS::EC2::Instance
Properties:
UserData:
"Fn::Base64":
"Fn::Sub": |
#!/bin/bash
aws s3 cp s3://${ScriptBucket}/${ScriptKey} - | bash -s
# (...) some other properties here
# (...)
3. Use preprocessor to inline script from single source
Finally, you can use a template-preprocessor tool like troposphere or your own to 'generate' verbose CloudFormation-executable templates from more compact/expressive source files. This approach will allow you to eliminate duplication in your source files - although the templates will contain 'duplicate' user-data scripts, this will only occur in the generated templates, so should not pose a problem.
You'll have to look outside the template to provide the same user data to multiple templates. A common approach here would be to abstract your template one step further, or "template the template". Use the same method to create both templates, and you'll keep them both DRY.
I'm a huge fan of cloudformation and use it to create most all my resources, especially for production-bound uses. But as powerful as it is, it isn't quite turn-key. In addition to creating the template, you'll also have to call the coudformation API to create the stack, and provide a stack name and parameters. Thus, automation around the use of cloudformation is a necessary part of a complete solution. This automation can be simplistic ( bash script, for example ) or sophisticated. I've taken to using ansible's cloudformation module to automate "around" the template, be it creating a template for the template with Jinja, or just providing different sets of parameters to the same reusable template, or doing discovery before the stack is created; whatever ancillary operations are necessary. Some folks really like troposphere for this purpose - if you're a pythonic thinker you might find it to be a good fit. Once you have automation of any kind handling the stack creation, you'll find it's easy to add steps to make the template itself more dynamic, or assemble multiple stacks from reusable components.
At work we use cloudformation quite a bit and are tending these days to prefer a compositional approach, where we define the shared components of the templates we use, and then compose the actual templates from components.
the other option would be to merge the two stacks, using conditionals to control the inclusion of the defined resources in any particular stack created from the template. This works OK in simple cases, but the combinatorial complexity of all those conditions tends to make this a difficult solution in the long run, unless the differences are really simple.
Actually I found one more solution than already mentioned. This solution on the one hand is a little "hackish", but on the other hand I found it to be really useful for "bash script" use case (and also for other parameters).
The idea is to create an extra stack - "parameters stack" - which will output the values. Since outputs of a stack are not limited to String (as it is for default values) we can define entire base64 encoded script as a single output from a stack.
The drawback is that every stack needs to define at least one resource, so our parameters stack also needs to define at least one resource. The solution for this issue is either to define the parameters in another template which already defines existing resource, or create a "fake resource" which will never be created becasue of a Condition which will never be satisified.
Here I present the solution with fake resource. First we create our new paramaters-stack.json as follows:
{
"AWSTemplateFormatVersion": "2010-09-09",
"Description": "Outputs/returns parameter values",
"Conditions" : {
"alwaysFalseCondition" : {"Fn::Equals" : ["aaaaaaaaaa", "bbbbbbbbbb"]}
},
"Resources": {
"FakeResource" : {
"Type" : "AWS::EC2::EIPAssociation",
"Condition" : "alwaysFalseCondition",
"Properties" : {
"AllocationId" : { "Ref": "AWS::NoValue" },
"NetworkInterfaceId" : { "Ref": "AWS::NoValue" }
}
}
},
"Outputs": {
"ec2InitScript": {
"Value":
{ "Fn::Base64" : { "Fn::Join" : ["", [
"#!/bin/bash \n",
"yum update -y \n",
"# Install the files and packages from the metadata\n",
"echo 'tralala' > /tmp/hahaha"
]]}}
}
}
}
Now in the main template we first declare our paramters stack and later we refer to the output from that parameters stack:
{
"AWSTemplateFormatVersion": "2010-09-09",
"Resources": {
"myParameters": {
"Type": "AWS::CloudFormation::Stack",
"Properties": {
"TemplateURL": "s3://path/to/paramaters-stack.json",
"TimeoutInMinutes": "10"
}
},
"myEc2": {
"Type": "AWS::CloudFormation::Stack",
"Properties": {
"TemplateURL": "s3://path/to/ec2-setup.json",
"TimeoutInMinutes": "10",
"Parameters": {
// (...)
"userData" : {"Fn::GetAtt": [ "myParameters", "Outputs.ec2InitScript" ]}
}
}
}
}
Please note that one can create up to 60 outputs in one stack file, so it is possible to define 60 variables/paramaters per single stack file using this technique.
My Kraken config in config.json
envConfig : {
prod : {
host : "....",
desc : "..."
},
qa : {
host : "....",
desc : "..."
},
}
Can I access this in my dust template as I wanted to dynamically populate my list or would I have to add it again in my context object for the template
I used ContextDump helper to find that the config is not accessible.I think it makes sense too as we should not expose the configuration information to the client side via dust