Update same pod with multiple specs

[colinkahn]

Hi,

I am trying to use multiple specs to update a single pod, something where I have many different local to remote mappings I want to watch/sync.

I've tried this and it doesn't seem to work. Any suggestions?

[grampelberg]

Hmm, the underlying implementations would allow it. There must be a disconnect somewhere in the stack. Take a look at the syncthing REST client and trace it back up the stack. Must be something strange in that interaction.

[ssoriche]

I too am having an issue with multiple specs to a single pod.

When ksync watch starts it attempts to communicate with syncthing for one spec, it is successful and adds the configuration.

DEBU[0011] [GWGCQ] 15:28:32 INFO: Completed initial scan of sendonly folder "picked-perch-my-test-64b45f7467-cf4xq" (picked-perch-my-test-64b45f7467-cf4xq)  name=syncthing
DEBU[0011] [GWGCQ] 15:28:33 INFO: Established secure connection to KTRE4PS-RYAPCOO-WMEYAN5-VM7WDEQ-6DCMCF4-RQIXIBP-LHBLMLE-UP3OXQO at 127.0.0.1:61379-127.0.0.1:61329/tcp-client/TLS1.3-TLS_AES_128_GCM_SHA256  name=syncthing
DEBU[0011] [GWGCQ] 15:28:33 INFO: Device KTRE4PS-RYAPCOO-WMEYAN5-VM7WDEQ-6DCMCF4-RQIXIBP-LHBLMLE-UP3OXQO client is "syncthing v1.3.4" named "ksync-qt866" at 127.0.0.1:61379-127.0.0.1:61329/tcp-client/TLS1.3-TLS_AES_128_GCM_SHA256  name=syncthing
DEBU[0011] [GWGCQ] 15:28:33 INFO: Device KTRE4PS-RYAPCOO-WMEYAN5-VM7WDEQ-6DCMCF4-RQIXIBP-LHBLMLE-UP3OXQO folder "picked-perch-my-test-64b45f7467-cf4xq" (picked-perch-my-test-64b45f7467-cf4xq) has a new index ID (0x466290F02BCED84D)  name=syncthing
DEBU[0012] [GWGCQ] 15:28:34 INFO: Adding folder "flowing-oyster-my-test-64b45f7467-cf4xq" (flowing-oyster-my-test-64b45f7467-cf4xq)  name=syncthing
DEBU[0012] [GWGCQ] 15:28:34 INFO: No stored folder metadata for "flowing-oyster-my-test-64b45f7467-cf4xq"; recalculating  name=syncthing
DEBU[0012] error copying from local connection to remote stream: read tcp4 127.0.0.1:61329->127.0.0.1:61379: read: connection reset by peer 
DEBU[0012] lost connection to remote                     node=test-node.local pod=my-test-64b45f7467-cf4xq
DEBU[0012] lost connection to remote                     node=test-node.local pod=my-test-64b45f7467-cf4xq
DEBU[0012] [GWGCQ] 15:28:34 INFO: Connection to KTRE4PS-RYAPCOO-WMEYAN5-VM7WDEQ-6DCMCF4-RQIXIBP-LHBLMLE-UP3OXQO at 127.0.0.1:61379-127.0.0.1:61329/tcp-client/TLS1.3-TLS_AES_128_GCM_SHA256 closed: started folder "flowing-oyster-my-test-64b45f7467-cf4xq" (flowing-oyster-my-test-64b45f7467-cf4xq)  name=syncthing
DEBU[0012] [GWGCQ] 15:28:34 INFO: Ready to synchronize "flowing-oyster-my-test-64b45f7467-cf4xq" (flowing-oyster-my-test-64b45f7467-cf4xq) (sendonly)  name=syncthing
DEBU[0012] restarting local syncthing                   
INFO[0012] finished unary call with code OK              grpc.code=OK grpc.method=RestartSyncthing grpc.service=proto.ksync.Ksync grpc.start_time="2020-04-03T15:28:34-04:00" grpc.time_ns=1027543 peer.address="127.0.0.1:61313" span.kind=server system=grpc

At which point syncthing has been told to restart which removes the first spec and adds the second spec.

DEBU[0012] [GWGCQ] 15:28:34 INFO: QUIC listener ([::]:22000) shutting down  name=syncthing
DEBU[0012] RESTY 2020/04/03 15:28:34 ERROR unexpected EOF, Attempt 1 
INFO[0012] folder sync running                           pod=my-test-64b45f7467-cf4xq spec=flowing-oyster
DEBU[0012] RESTY 2020/04/03 15:28:34 ERROR unexpected EOF, Attempt 1 
DEBU[0012] [GWGCQ] 15:28:34 INFO: Failed initial scan of sendonly folder "flowing-oyster-my-test-64b45f7467-cf4xq" (flowing-oyster-my-test-64b45f7467-cf4xq)  name=syncthing
DEBU[0013] [GWGCQ] 15:28:34 INFO: TCP listener ([::]:22000) shutting down  name=syncthing
DEBU[0013] [GWGCQ] 15:28:34 INFO: Exiting                name=syncthing
DEBU[0013] [monitor] 15:28:34 INFO: Syncthing exited: exit status 3  name=syncthing

The syncthing console will sometimes show that the first spec is being seen as a new folder and ask to add or ignore. Clicking add doesn't allow the spec to be saved. Sometimes it doesn't ask at all, just leaves the second spec running.

DEBU[0015] [GWGCQ] 15:28:37 INFO: Ready to synchronize "flowing-oyster-my-test-64b45f7467-cf4xq" (flowing-oyster-my-test-64b45f7467-cf4xq) (sendonly)  name=syncthing
DEBU[0016] [GWGCQ] 15:28:37 INFO: Unexpected folder "picked-perch-my-test-64b45f7467-cf4xq" (picked-perch-my-test-64b45f7467-cf4xq) sent from device "KTRE4PS-RYAPCOO-WMEYAN5-VM7WDEQ-6DCMCF4-RQIXIBP-LHBLMLE-UP3OXQO"; ensure that the folder exists and that this device is selected under "Share With" in the folder configuration.  name=syncthing

Removing both specs, and adding them again works, but once ksync watch is disconnected, the race to register with the local syncthing starts all over again.

I tried starting syncthing on its own to avoid the condition but ksync watch also tries to start it and fails because the port is already in use.

Hopefully this helps, I can create these errors over and over again so if more details or testing is required, please let me know.