If you saw my previous post on TLSv1.0 (https://www.percona.com/blog/2016/05/23/percona-disabling-tlsv1-0-may-31st-2016/), you’ll know I wanted to deprecate TLSv1.0 well ahead of PCI’s changes. We made the changes May 31st.
Unfortunately, it has become apparent that EL 5, which is in the final phases of End Of Life, does not support TLSv1.1 or TLSv1.2. As such, I have had to re-enable TLSv1.0 support so that these users employing EL 5 can still receive updates from our repositories.
If you are running EL 5 (RHEL 5 / CentOS 5 / Scientific Linux 5 / etc …), I encourage you to update as soon as possible. As of March 31st, 2017 there will be no more updates at all, and at present EL 5 is effectively receiving very few updates. It also has known vulnerabilities.
Removal of TLSv1.0 support will now take place March 31st, 2017. If there are any EL 5 backports that bring support for TLSv1.1 / TLSv1.2 in the interim, I will seek to remove support earlier.