عَنْ عُمَرَ بْنِ الْخَطَّابِ : أنّه کَانَ إِذَا قَحَطُوا اسْتَسْقَى بِالْعَبَّاسِ بْنِ عَبْدِالْمُطَّلِبِ ، فَقَالَ: اللَّهُمَّ إِنَّا کُنَّا نَتَوَسَّلُ إِلَیْکَ بِنَبِیِّنَا فَتَسْقِينَا، وَإِنَّا نَتَوَسَّلُ إِلَیْکَ بِعَمِّ نَبِیِّنا فَاسْقِنَا، قَالَ: فَیُسْقَوْنَ. صحیح البخاری - البخاری - ج 4 - ص 209
( محمد ابن اسماعیل البخاری ، صحیح البخاری باب المناقب عباس ابن عبد المطلب حدیث 3710، النشر الثالث ،بیروت ؛ دارالکتب العلمیه)
In accordance with a narration in Sahih Al-Bukhari, when there was famine in Medina, Omer ibn Khatab recoursed to the honor of Abbas ibn Abdol Motaleb (the Prophet's uncle) and said: o God, we have recoursed to the honor of your Prophet and you gave us rain, now we recourse to the honor of his uncle and ask you rain.
(Sahih Al Bukhari - Al-Bukhari - V4 - pg 209)
I was heard from a person that Sunnis don't agree with Tawassol (recourse) and even many of them assume that it is like Shirk. But when I saw the hadith (narration) above, I did not believe the speech of that person. Since if there is such narration(s) (that I mentioned from Sahih Al-Bukhari), hence it shows and even perhaps demosntrates that Omar agreed with Recourse and this is not Shirk.
How do Sunnis interpret this hadith?