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6a18ee911e
* Adds scopeUID config to enable multiple instances of Watchtower * Adds tests for multiple instance support with scopeuid * Adds docs on scope monitoring and multiple instance support * Adds multiple instances docs to mkdocs config file * Changes multiple instances check and refactors naming for scope feature * Applies linter suggestions * Fixes documentation on Watchtower monitoring scope
1.2 KiB
1.2 KiB
By default, Watchtower will clean up other instances and won't allow multiple instances running on the same Docker host or swarm. It is possible to override this behavior by defining a scope to each running instance.
Notice that:
- Multiple instances can't run with the same scope;
- An instance without a scope will clean up other running instances, even if they have a defined scope;
To define an instance monitoring scope, use the --scope argument or the WATCHTOWER_SCOPE environment variable on startup and set the com.centurylinklabs.watchtower.scope label with the same value for the containers you want to include in this instance's scope (including the instance itself).
For example, in a Docker Compose config file:
version: '3'
services:
app-monitored-by-watchtower:
image: myapps/monitored-by-watchtower
labels:
- "com.centurylinklabs.watchtower.scope=myscope"
watchtower:
image: containrrr/watchtower
volumes:
- /var/run/docker.sock:/var/run/docker.sock
command: --interval 30 --scope myscope
labels:
- "com.centurylinklabs.watchtower.scope=myscope"