hi, according to this bug https://bugzilla.redhat.com/show_bug.cgi?id=1142311 rh silently replace iputils with the same version with a fixed capabilities. unfortunately official base centos-7 (ie. latest 7.2) docker images are build with the wrong version, so these images should have to be rebuild with the proper version. currently in the official centos7 docker images: ------------------------------------- # rpm -qi iputils Name : iputils Version : 20121221 Release : 7.el7 Architecture: x86_64 Install Date: Wed 23 Dec 2015 06:09:24 PM UTC Group : System Environment/Daemons Size : 368577 License : BSD and GPLv2+ Signature : RSA/SHA256, Wed 25 Nov 2015 02:43:41 PM UTC, Key ID 24c6a8a7f4a80eb5 Source RPM : iputils-20121221-7.el7.src.rpm Build Date : Fri 20 Nov 2015 07:12:19 PM UTC Build Host : worker1.bsys.centos.org Relocations : (not relocatable) Packager : CentOS BuildSystem http://bugs.centos.org Vendor : CentOS URL : http://www.skbuff.net/iputils Summary : Network monitoring tools including ping Description : The iputils package contains basic utilities for monitoring a network, including ping. The ping command sends a series of ICMP protocol ECHO_REQUEST packets to a specified network host to discover whether the target machine is alive and receiving network traffic. -------------------------------------
while in the centos repo: ------------------------------------- # rpm -qi iputils Name : iputils Version : 20121221 Release : 7.el7 Architecture: x86_64 Install Date: Tue 15 Dec 2015 03:15:22 PM CET Group : System Environment/Daemons Size : 368577 License : BSD and GPLv2+ Signature : RSA/SHA256, Wed 25 Nov 2015 03:43:41 PM CET, Key ID 24c6a8a7f4a80eb5 Source RPM : iputils-20121221-7.el7.src.rpm Build Date : Fri 20 Nov 2015 08:12:19 PM CET Build Host : worker1.bsys.centos.org Relocations : (not relocatable) Packager : CentOS BuildSystem http://bugs.centos.org Vendor : CentOS URL : http://www.skbuff.net/iputils Summary : Network monitoring tools including ping Description : The iputils package contains basic utilities for monitoring a network, including ping. The ping command sends a series of ICMP protocol ECHO_REQUEST packets to a specified network host to discover whether the target machine is alive and receiving network traffic. ------------------------------------- imho it's a bug! without it ping not working from any docker container based on centos7.