On 12/15/2015 06:12 AM, Chris wrote: > Hello, > > > > I'm looking for a solution to automatically yum update security relevant > packages on a couple hundred Centos6/7 servers. The deployment/trigger would > be Ansible. > > I looked into the "yum-plugin-security" and tested it on a CentOS 6 > installation but always found no security relevant updates (yum > list-security/yum --security update) where there should be at least a couple > ones. I read around it and found that this solution is not working for > CentOS (can you please confirm). What is the best practice to upgrade > security relevant packages on live systems without service interruption? I will do the obligatory point out that JUST installing security updates and NOT also installing all the other updates that the security updates were built against is NOT supported in either CentOS or RHEL. For example, look at this errata : https://rhn.redhat.com/errata/RHSA-2015-2655.html Read the Solution section, where it says: "Before applying this update, make sure all previously released errata relevant to your system have been applied." This does not say all previous security errata or some selected group of packages .. it says 'all previously released errata'. That means all Bugfix, Enhancement, and Security updates that were released before this errata was released .. and that means run a 'yum update' and install all updates. If you are picking only security updates and all not all updates, then that is not a tested secure solution. The only supported and tested solution is all updates.
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