How to set systemd and let rust run in background?

help
1

Hi everyone,i tried different ways to have systemd call rust to run in the background, but none of them succeeded.

Let systemd call the shell to execute the cargo run: the error is that it reads only ''cargo'', but treats 'run' as another parameter, so it won't run.

Use cargo-deb and call it: the error is thread 'main' panicked at called Option::unwrap() on a None value, src/libcore/option.rs:355:21 and note: Run with RUST_BACKTRACE=1 for a backtrace.

Is there any better way?

Note: I use iron to set up a web service, enter url to execute cassandra's query

2

You just need to point the service file at the compiled binary, not cargo. cargo run tells you the pathname.

3

Yes, I have set the location of the compiled binary, but the problem is still the error described in the second.

The following is the file content of systemd(ExecStart is a binary file):

[Unit]
Description=cassandra-rs-driver
After=network.target

[Service]
User=root
ExecStart=/usr/bin/cassandra-rs-driver

[Install]
WantedBy=multi-user.target
4

The second error tells you it is running your binary but there's a bug. You're unwrapping something that is None.

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5

I found the problem, it is about the use of CombinedLogger. So, I have to find a new log lib to replace it.

1 Like