CoreOS Systemd sidekick unit unable to start

Question

I have a service with this for a sidekick unit and keep receiving the error: [/run/fleet/units/[email protected]:11] Trailing garbage, ignoring. [email protected] has no ExecStart= setting, which is only allowed for RemainAfterExit=yes services. Refusing.

I have seemingly tried every different combination I can think of and have successfully tested the command from the terminal without issue. If I remove the first call to etcdctl the second set command also works in the service file without issue. Any ideas as to where I am going wrong here?

[Unit] Description=Tomcat web server etcd registration # Requirements Requires=etcd.service Requires=tomcat@%i.service # Dependency ordering and binding After=etcd.service After=tomcat@%i.service BindsTo=tomcat@%i.service [Service] # Get CoreOS environmental variables EnvironmentFile=/etc/environment # Start ExecStart=/bin/bash -c "\ while true; do \ etcdctl set /services/tomcat/tomcat-%i/ip ${COREOS_PRIVATE_IPV4}:$(docker inspect --format='{{(index (index .NetworkSettings.Ports "8080/tcp") 0).HostPort}}' tomcat.%i) --ttl 180; \ etcdctl set /services/bind/tomcat-%i ${COREOS_PRIVATE_IPV4} --ttl 180; \ sleep 60; \ done" # Stop ExecStop=/usr/bin/etcdctl rm --recursive /services/tomcat/tomcat-%i [X-Fleet] # Schedule on the same machine as the associated Apache service MachineOf=tomcat@%i.service 

Answer 1

I was able to correct the error by using single quotes around the /bin/bash -c command, using double quotes around the --format and double escape the port number. The final full ExecStart command is:

ExecStart=/bin/bash -c '\ while true; do \ etcdctl set /services/tomcat/tomcat-%i/ip ${COREOS_PRIVATE_IPV4}:$(docker inspect --format="{{(index (index .NetworkSettings.Ports \\"8080/tcp\\") 0).HostPort}}" tomcat.%i) --ttl 180; \ etcdctl set /services/bind/tomcat-%i ${COREOS_PRIVATE_IPV4} --ttl 180; \ sleep 60; \ done'