To override environment variables via CLI we may use --overrides (structure)
according to AWS ECS Commandline Reference.
How to pass name value pairs (structure or JSON) in command line?
[
{ "name" : "NAME", "value" : "123" },
{ "name" : "DATE", "value" : "1234-12-12" },
{ "name" : "SCRIPT", "value" : "123456" }
]
I'm looking for a way to override above environment variables using AWS ECS CLI. Something like:
aws ecs run-task --overrides <<just environment vars here>> --task-definition ...
Documentation is not clear. I googled but couldn't help.
You have to provide a JSON document as documented under the --overrides
option.
{
"containerOverrides": [
{
"name": "string",
"command": ["string", ...],
"environment": [
{
"name": "string",
"value": "string"
}
...
]
}
...
],
"taskRoleArn": "string"
}
You have to specify the name
of the container to get the environment override, and specify a list of environment
key-value pairs.
You can specify the JSON document in-line with your argument or pass a file path argument to the task. I will show both ways.
Your command would look like this (fill in the value CONTAINER_NAME_FROM_TASK
).
aws ecs run-task --overrides '{ "containerOverrides": [ { "name": "CONTAINER_NAME_FROM_TASK", "environment": [ { "name": "NAME", "value": "123" }, { "name": "DATE", "value": "1234-12-12" }, { "name": "SCRIPT", "value": "123456" } ] } ] }' --task-definition (...)
That does look rather ugly though, and would be annoying to edit. It also only works on Unix-y systems and would require quote escaping in Windows.
So alternatively, you can pass a file path to the AWS CLI and have it load your override JSON from a file.
Create a file, let's call it overrides.json
, and put the same JSON into it:
{
"containerOverrides": [{
"name": "CONTAINER_NAME_FROM_TASK",
"environment": [{
"name": "NAME",
"value": "123"
}, {
"name": "DATE",
"value": "1234-12-12"
}, {
"name": "SCRIPT",
"value": "123456"
}]
}]
}
Then, assuming your file is in the current directory:
aws ecs run-task --overrides file://overrides.json --task-definition (..)
If your file is elsewhere in the filesystem and you're on a Linux/Unix-y system:
aws ecs run-task --overrides file:///path/to/overrides.json --task-definition (..)
If your file is elsewhere in the filesystem and you're doing this in Windows:
aws ecs run-task --overrides file://DRIVE_LETTER:\path\to\overrides.json --task-definition (..)