In docker-compose.yml, three containers are defined to run the code in src/main.go.
In container dns-test-175x and dns-test-18, the code works fine, but in
container dns-test-175, it complains that it cannot connect to Elasticsearch:
panic: no Elasticsearch node available
goroutine 1 [running]:
panic(0x653d80, 0xc42000d280)
/usr/local/go/src/runtime/panic.go:500 +0x1a1
main.main()
/go/src/github.com/YanhaoYang/debug-dns-problem/main.go:17 +0x206
exit status 2
The debugging process can be found in Debug a DNS problem with Go 1.7.5 in Docker container.