According to securityspace's October-November delta, nearly half a million web hosts jumped to httpd 2.2.31 in the past month alone (almost entirely from older 2.2.x servers) while 11k downgraded to an older 2.2 or upgraded 2.2.31 to 2.4.x.
Half a million in 31 days? This is triple the 2.2.31 adoption from the Sept time-frame. http://www.securityspace.com/s_survey/data/man.201510/srvch.html?server=Apache&revision=Apache%2F2.2.31 The httpd 2.4.12 - 2.4.17 series experienced about 142k upgrades vs. 16k downgrades over the same period, and similar numbers in Sept-Oct. Those releases are essentially concurrent with the 2.2.31 release, and I didn't look back into 2014's releases on either branch since 2.2.29 and 2.4.10 are both over a year old. Here are some tallies to give you a rough idea of what happened last month; FromToFromTo2.2.x-2.2.314723592.2.312.4.x26972.4.x+2.2.3119162.2.312.2.x- 1634Other2.2.31246702.2.31Other6697498945110282.4.x-2.4.x613082.4.x2.4.x-800 2.2.x2.4.x419742.4.x2.2.x-2715Other2.4.x385992.4.xOther1238114188115896 Upgrades640826Downgrades26924 2.4.x refers to the 2.4.12 - 2.4.17 releases (past 12 mos, the same basic lifespan as 2.2.31), but I tallied our earlier 2.4.x release counts for any +/- upgrade/downgrade deltas. E.g. 2.2.4 -> 2.4.7 isn't counted anywhere, but 2.4.16 -> 2.4.7 is counted as a 2.4.x- downgrade. I counted 2.4.12 -> 2.4.16 only once, in the 2.4.x+ upgrade tally. 2.2.x refers to 2.2 flavors prior to 2.2.31, but .31 is tallied but I tallied 2.2.31 into +/- upgrade/downgrade deltas. I did re-count 2.4.x+ -> 2.2.31 conversion in the 2.4.x -> 2.2.x- downgrade tally. "Other" may be pre-2.4.x, or a non-specific Apache/2 Server string, or too small a proportion to call out individually. On the one hand, I'm ecstatic that users are clearly upgrading at maybe the fastest pace in forever. On the other hand, I am stuck wondering how we have made the 2.4.x transition effectively 3x harder than upgrading within the 2.2 lineage, and puzzling over what we can improve as a project to ease this transition for millions of deployed 2.2.x instances.
