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Running multiple instances
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Running multiple instances
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< h1 > Running multiple instances< / h1 >
< p > 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 < a href = "https://containrrr.github.io/watchtower/arguments/#filter_by_scope" > scope< / a > to each running instance. < / p >
< p > 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;< / p >
< p > To define an instance monitoring scope, use the < code > --scope< / code > argument or the < code > WATCHTOWER_SCOPE< / code > environment variable on startup and set the < em > com.centurylinklabs.watchtower.scope< / em > label with the same value for the containers you want to include in this instance's scope (including the instance itself).< / p >
< p > For example, in a Docker Compose config file:< / p >
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