Config flags don't work

[DamianZaremba]

The -config flag is documented @ https://github.com/VerizonDigital/vflow/blob/master/docs/config.md, as well as in --help.

Using it to specify an alternate config file doesn't appear to function as expected;

# vflow -config test.conf
[vflow] 2017/04/24 08:37:27 open /usr/local/vflow/etc/vflow.conf: no such file or directory

Strace confirms the binary isn't attempting to open the test file;

openat(AT_FDCWD, "/proc/sys/net/core/somaxconn", O_RDONLY|O_CLOEXEC) = 3
openat(AT_FDCWD, "/usr/local/vflow/etc/vflow.conf", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/share/zoneinfo//:/etc/localtime", O_RDONLY) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/share/lib/zoneinfo//:/etc/localtime", O_RDONLY) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/lib/locale/TZ//:/etc/localtime", O_RDONLY) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/lib64/go/lib/time/zoneinfo.zip", O_RDONLY) = -1 ENOENT (No such file or directory)
[vflow] 2017/04/24 08:38:17 open /usr/local/vflow/etc/vflow.conf: no such file or directory
openat(AT_FDCWD, "/var/run/vflow.pid", O_RDONLY|O_CLOEXEC) = 3
openat(AT_FDCWD, "/dev/null", O_RDONLY|O_CLOEXEC) = 3
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2017, si_status=1, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/var/run/vflow.pid", O_WRONLY|O_CREAT|O_CLOEXEC, 0666) = 3
+++ exited with 1 +++

The message broker config appears to exhibit the same behaviour;
(/usr/local/vflow/etc/vflow.conf has been created in this example)

openat(AT_FDCWD, "/proc/sys/net/core/somaxconn", O_RDONLY|O_CLOEXEC) = 3
openat(AT_FDCWD, "/usr/local/vflow/etc/vflow.conf", O_RDONLY|O_CLOEXEC) = 3
openat(AT_FDCWD, "/var/run/vflow.pid", O_RDONLY|O_CLOEXEC) = 3
openat(AT_FDCWD, "/dev/null", O_RDONLY|O_CLOEXEC) = 3
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11094, si_status=1, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/var/run/vflow.pid", O_WRONLY|O_CREAT|O_CLOEXEC, 0666) = 3
[vflow] 2017/04/24 08:40:08 sflow has been disabled
[vflow] 2017/04/24 08:40:08 starting stats web server ...
[vflow] 2017/04/24 08:40:08 ipfix is running (workers#: 200)
[vflow] 2017/04/24 08:40:08 ipfix RPC enabled
[vflow] 2017/04/24 08:40:09 kafka: client has run out of available brokers to talk to (Is your cluster reachable?)
+++ exited with 1 +++

This has been tested against the 0.3.0 tag and the current master.

[mehrdadrad]

@DamianZaremba Thank you for reporting this. I could duplicate the vflow.conf issue but not for broker config.