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docker_volume_synchronizator's Issues

Use the endpoint /events to poll containers

Instead of issuing the command "docker service ps .." command in order to check if some variation occurred, it should be used the endpoint /events exposed by the unix socket.
This approach will reduce a lot the CPU consumed.
In first attempt, /events can be used just to see if some changes occurred and then use the same command as before to verify if interesting changes occurred.
After a better approach can be use, filtering on which events are interesting.

Error: Service to sync not found

Hi,

I've tried running this Docker service (https://hub.docker.com/r/fabrizio2210/docker_volume_synchronizer) as I want to sync two data volumes, but ran into and error. In the logs I can see:

++ service=core_sync_squid
++ '[' -z core_sync_squid ']'
+++ findValueByLabel core_sync_squid async.service
+++ _my_service=core_sync_squid
+++ _label=async.service
++++ docker service ls --format '{{print .Name}}'
+++ for _service in $(docker service ls --format '{{print .Name}}')
+++ '[' core_sync_squid == core_squid ']'
+++ for _service in $(docker service ls --format '{{print .Name}}')
+++ '[' core_sync_squid == core_sync_squid ']'
+++ docker service inspect core_sync_squid '--format={{ index .Spec.Labels "async.service"}}'
+ set +x
+++ return
++ serviceToSync=
++ '[' -z '' ']'
++ echo 'Service to sync not found'
Service to sync not found
++ exit 2
cat: '/var/run/*.pid': No such file or directory

If I run this command from the command prompt:

docker service inspect core_sync_squid '--format={{ index .Spec.Labels "async.service"}}'

I get no results, which I would expect to see as it replicates the log. However, if I run:

docker service inspect core_sync_squid  --format="{{ index .Spec.TaskTemplate.ContainerSpec.Labels \"async.service\" }}"

then it returns :

squid

which is what I think the script is expecting to see. So, I think that there may be an error on line 253, of src/lib.sh could be incorrect.

I've tried changing this, and building the docker container locally, but a native build on ARM hardware fails at RUN [ "cross-build-start" ] with an exec error, so presumably this is incorrect architecture.

If I run the build on my amd64 hardware, it compiles successfully, but I get the same exec error when the node is deployed to the ARM hardware I'm running it on.

Any help would be greatly appreciated.

Filter just own changes in http://localhost/events

The watchdog is identifying changes although they are not related to the service.
The problem is that other services are triggering events and the watchdog doesn't filter by name of the service.

For example the following event is triggering the watchdog

{"status":"exec_die","id":"cc928e18ce819b5222464bc70e73c6d9f31e8c6bf0ff9b9a2cdfb72c95a140d5","from":"fabrizio2210/zabbix-server-mysql-alpine:armhf","Type":"container","Action":"exec_die","Actor":{"ID":"cc928e18ce819b5222464bc70e73c6d9f31e8c6bf0ff9b9a2cdfb72c95a140d5","Attributes":{"com.docker.stack.namespace":"Zabbix","com.docker.swarm.node.id":"bjjftibfnf5w38400ub4b1k3g","com.docker.swarm.service.id":"p6v8m5qcwpmqr2bdrh5lx0zj3","com.docker.swarm.service.name":"Zabbix_zabbix-server","com.docker.swarm.task":"","com.docker.swarm.task.id":"q17kmb507ddoxqulpf28xefyw","com.docker.swarm.task.name":"Zabbix_zabbix-server.1.q17kmb507ddoxqulpf28xefyw","com.zabbix.company":"Zabbix SIA","com.zabbix.component":"zabbix-server","com.zabbix.dbtype":"mysql","com.zabbix.description":"Zabbix server with MySQL database support","com.zabbix.os":"alpine","execID":"3a866dc33edeb6a403b2e67ed7f2181688863794183105f373e52403f41eb0ec","exitCode":"0","image":"fabrizio2210/zabbix-server-mysql-alpine:armhf","io.balena.architecture":"rpi","io.balena.device-type":"raspberry-pi","io.balena.qemu.version":"4.0.0+balena-arm","maintainer":"Alexey Pustovalov \[email protected]\u003e","name":"Zabbix_zabbix-server.1.q17kmb507ddoxqulpf28xefyw","org.label-schema.build-date":"","org.label-schema.description":"Zabbix server with MySQL database support","org.label-schema.docker.cmd":"docker run --name zabbix-server-mysql --link mysql-server:mysql -p 10051:10051 -d zabbix-server-mysql:alpine-4.2.5","org.label-schema.license":"GPL v2.0","org.label-schema.name":"zabbix-server-mysql-alpine","org.label-schema.schema-version":"1.0","org.label-schema.url":"https://zabbix.com/","org.label-schema.usage":"https://www.zabbix.com/documentation/4.2/manual/installation/containers","org.label-schema.vcs-ref":"","org.label-schema.vcs-url":"https://git.zabbix.com/scm/zbx/zabbix.git","org.label-schema.vendor":"Zabbix LLC","org.label-schema.version":"4.2.5"}},"scope":"local","time":1601755506,"timeNano":1601755506720369721}

The file to change is https://github.com/fabrizio2210/Docker_Volume_Synchronizator/blob/master/src/wd_conf.sh
in line 61

sync without swarm

Hello,
thank-you for your work.

can I help you to make a version for use without swarm and just for syncronise two folders via docker.

Thanks

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