タイトルの通りなんだけども、RHEL 7.3 + etckeeper-1.18.5-1.el7だと設定方法がググった結果と少し違ったので。
# etckeeper init -d /var/named/
# etckeeper commit -d /var/named/ "Initial Commit"
Dailyの自動保存は以下。
# etckeeper vcs diff HEAD^ HEAD
diff --git a/etckeeper/daily b/etckeeper/daily
index f98c6ad..16def11 100755
--- a/etckeeper/daily
+++ b/etckeeper/daily
@@ -13,5 +13,8 @@ if [ -x /usr/bin/etckeeper ] && [ -e /etc/etckeeper/etckeeper.conf ]; then
if etckeeper unclean; then
etckeeper commit "daily autocommit" >/dev/null
fi
+ if etckeeper unclean -d /var/named/; then
+ etckeeper commit -d /var/named/ "daily autocommit" >/dev/null
+ fi
fi
fi