TiKV servers are not assigned regions

[noirgif]

I'm using Archlinux, 5.4.1 kernel. Docker version Docker version 19.03.5-ce, build 633a0ea838.

Steps to reproduce:

1. Follow the instructions for docker-compose, but use network=host, and comment everything out except TiKV and PD sections.
2. call pd-ctl region
   It showed only one peer in the region, other two are missing.

Calling pd-ctl region store <id> on the stores attests to the results(only one of the store has a region).

Calling pd-ctl store show will return all the stores, so I assume all TiKVs are connected to PDs.

Caling pd-ctl member showed that all PDs are connected.

This can be reproduced with the docker swarm as well. I created a container with pd-ctl in it to access nodes in the overlay network, and the results are the same as above.

[noirgif]

pd-ctl region output
pd-ctl store show output
TiKV logs for start, key insertion, and shutdown
PD logs

[tennix]

@noirgif Thank you for reporting this. Here are what I can get from your context:

• First, I tried to reproduce this on my Linux machine. But the regions are spread on 3 TiKVs.
• Second, from the pd-0 log file, there is gRPC context canceled error and pd continue reporting store has no leader and store has no follower.

@nolouch Could you take a look at this issue?

[nolouch]

Hi, @noirgif . according to the log:

[2019/12/06 19:55:09.678 +00:00] [DEBUG] [replica_checker.go:80] ["region has fewer than max replicas"] [region-id=4] [peers=1]
[2019/12/06 19:55:09.680 +00:00] [DEBUG] [replica_checker.go:122] ["no best store to add replica"] [region-id=4]
[2019/12/06 19:55:09.779 +00:00] [DEBUG] [replica_checker.go:80] ["region has fewer than max replicas"] [region-id=4] [peers=1]
[2019/12/06 19:55:09.779 +00:00] [DEBUG] [replica_checker.go:122] ["no best store to add replica"] [region-id=4]

The problem is that the available capacity : 13G is too low to compare to capacity:108 G. you can change the tikv config:

[raftstore]
capacity = "10GB"