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Option 4: Run multiple intsances/nodes on the same machine. This is like options 2 and 3 except it's simpler because there's no virtualization or containerization. It's all running natively on the host. Here's a list of caveats and recommendations when doing so (from here). Max heap size for each node instance should be < 32Gb. This is because a ...


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There are several ways to install diff-versioned software on the same server but (I think) the best variant is packing your application into different Docker containers.


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The problem is Tomcat waiting for entropy to build up. Try add the following system property: -Djava.security.egd=file:/dev/./urandom See: Tomcat7 hangs on deploying apps



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