Docker: b'json: cannot unmarshal number into Go struct field LogConfig.Config of type string'

Question

I configured my application in docker compose to use rotating logs, following the in the following site: https://medium.com/@Quigley_Ja/rotating-docker-logs-keeping-your-overlay-folder-small-40cfa2155412

my-app:
image: my-app:latest
logging:
    driver: "json-file"
    options:
        max-file: 5
        max-size: 10m

But when I run the program now it cannot start with the following error: b'json: cannot unmarshal number into Go struct field LogConfig.Config of type string'

score 48 · Answer 1 · answered Mar 01 '19 at 07:37

48

Turns out I had to put " " around the values:

my-app:
image: my-app:latest
logging:
    driver: "json-file"
    options:
        max-file: "5"
        max-size: "10m"

answered Mar 01 '19 at 07:37

Tudor

2,224
2
21
24

Capiloky · Answer 2 · 2022-06-20T19:24:58.900

2

If anyone has this problem, just update composer to latest version. How to upgrade docker-compose to latest version

edited Jun 20 '22 at 19:24

answered Jun 20 '22 at 19:24

Capiloky

21
2

Was wondering why I started getting this error.. Turned out I've been always using "docker compose" and mistyped as "docker-compose". – TechGeorgii Aug 31 '23 at 09:52

Docker: b'json: cannot unmarshal number into Go struct field LogConfig.Config of type string'

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