start-controller.sh failed with error: Argument list too long

[zhangzujian]

Expected Behavior

Actual Behavior

kube-ovn-controller failed with the following logs:

/kube-ovn/start-controller.sh: line 22: /usr/bin/sed: Argument list too long
/kube-ovn/start-controller.sh: line 22: /usr/bin/sed: Argument list too long
/kube-ovn/start-controller.sh: line 24: /usr/bin/sed: Argument list too long
/kube-ovn/start-controller.sh: line 22: /usr/bin/sed: Argument list too long
/kube-ovn/start-controller.sh: line 22: /usr/bin/sed: Argument list too long
/kube-ovn/start-controller.sh: line 24: /usr/bin/sed: Argument list too long
/kube-ovn/start-controller.sh: line 37: /kube-ovn/kube-ovn-controller: Argument list too long

Maybe it's related to #1799 in which case the value of the OVN_NB_DAEMON environment variable is too long.

We should also validate the environment variable in the shell script.

Steps to Reproduce the Problem

Additional Info

• Kubernetes version:

  Output of kubectl version:

  (paste your output here)
  

• kube-ovn version:

  (paste your output here)
  

• operation-system/kernel version:

  Output of awk -F '=' '/PRETTY_NAME/ { print $2 }' /etc/os-release:
  Output of uname -r:

  (paste your output here)