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https://github.com/openshift/ose/pull/847
Test on OCP3.4+rhel7.3 /OCP3.4+rhel7.4 oc v3.4.1.44.17 kubernetes v1.4.0+776c994 iptables v1.4.21 Use an infinite loop to keep creating services which have same endpoint from master side. On the node side, check the process which is opening the /run/xtables.lock file. [root@ip-172-18-1-166 ~]# while true ; do lsof +c0 /run/xtables.lock ; done COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME iptables-restor 130893 root 3rW REG 0,18 0 25053 /run/xtables.lock COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME iptables-restor 438 root 3rW REG 0,18 0 25053 /run/xtables.lock COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME iptables-restor 451 root 3r REG 0,18 0 25053 /run/xtables.lock COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME iptables-restor 501 root 3r REG 0,18 0 25053 /run/xtables.lock COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME iptables-restor 530 root 3rW REG 0,18 0 25053 /run/xtables.lock COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME iptables-restor 559 root 3rW REG 0,18 0 25053 /run/xtables.lock COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME iptables-restor 630 root 3rW REG 0,18 0 25053 /run/xtables.lock COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME iptables-restor 645 root 3rW REG 0,18 0 25053 /run/xtables.lock And no "Resource temporarily unavailable (exit status 4)" in node log.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2017:2670