After investigation was found, that we don't use pinning for Centos 7 version. Update to Centos 7.2(http://mirror.centos.org/centos-7/7.2.1511/) has brought regression during the operation of master node, network driver for e1000 doesn't work correctly. We have to investigate in more details why it happens and how RAM size and/or CPU count are correlated with issue.
For avoiding such regressions we must do pinning of Centos version and don't update major version of OS after FF.
After investigation was found, that we don't use pinning for Centos 7 version. Update to Centos 7.2(http:// mirror. centos. org/centos- 7/7.2.1511/) has brought regression during the operation of master node, network driver for e1000 doesn't work correctly. We have to investigate in more details why it happens and how RAM size and/or CPU count are correlated with issue.
For avoiding such regressions we must do pinning of Centos version and don't update major version of OS after FF.