Beberapa waktu yang lalu saya baru menyadari bahwa sebuah server saya, yang ditaruh di datacenter SoftLayer.com, ternyata cuma terdeteksi 1 core/CPU oleh operating systemnya; yaitu Ubuntu 8.04 (hardy). Padahal spec server tersebut adalah Quad-core Xeon.
Karena sebelumnya SoftLayer.com juga keliru mendeploy server tersebut – saya pesan 4 GB RAM dan 500 GB HD, namun hanya mereka pasang separuhnya; maka saya kira mereka juga keliru dalam pemasangan CPU-nya ini. No problem, lalu saya kirim lagi support request kepada customer service mereka.
Ternyata, menurut mereka, sudah betul terpasang CPU Xeon quad-core. Lho, tapi kenapa tidak terdeteksi oleh Ubuntu ya ?
Setelah saya cek dengan perintah uname -a yang muncul adalah output sbb :
Linux xxx.abangadek.com 2.6.24-19-386
Kemudian saya menanyakan masalah ini di channel #ubuntu di server irc.freenode.com
Luar biasa, ternyata dalam waktu beberapa menit saja saya sudah mendapatkan solusinya, yaitu :
apt-get install linux-image-generic
shutdown -r now
Karena ada proses instalasi kernel baru, maka sebelum melakukan perintah-perintah tersebut diatas, saya backup dulu data-data yang ada di server tersebut. Setelah itu, saya ketikkan perintah-perintah tersebut, dan menunggu dengan harap-harap cemas.
Bukan apa-apa, 3 jam lagi akan peak-time di Amerika, dan akan tiba ratusan ribu pengunjung yang mendatangi berbagai situs yang di hosting di server tersebut. Kalau sampai ada masalah dan terus berlanjut sampai peak time tersebut, maka jelas ini akan menimbulkan banyak kesulitan.
Alhamdulillah, worst-case scenario tersebut tidak terjadi 🙂
Proses pergantian kernel ini berjalan dengan sangat mulus. Dalam waktu 10 menit saja server tersebut sudah online & live kembali.
Kini perintah uname -a menampilkan output sbb :
Linux xxx.abangadek.com 2.6.24-19-generic #1 SMP
Yesss…. dan pada output di perintah top, jika saya menekan angka 1 (satu), maka statistik untuk 4 buah core muncul. Tidak lagi cuma 1 core 🙂
Syukurlah tidak ada yang serius. Ternyata teknisi SoftLayer hanya keliru memasang kernel – dia pasang kernel linux-image-386, yang tidak mendukung SMP (Symmetric Multi Processing). Padahal, seperti yang dicantumkan diatas, seharusnya yang dipasang adalah kernel linux-image-generic
Happy, and easy, ending.
Semoga bermanfaat.
Wah wah wah.. asik bener sepertinya.. 🙂
Buat yang ndak mudheng linux tapi punya kompie ganas bisa berabe yakz..
Tak kirain ngoprek mas………
bagaimana cara melihat perintah2 di linux bingung nih
Mas harry, tolong beri pencerahan donk… begini ceritanya, saya mau install suse11 dalam ubuntu 8.04 pk virtualbox bawaan reponya, tapi waktu mau running muncul pesan error spt ini :
Make sure that the user has write permissions for /dev/vboxdrv by adding them to the vboxusers groups. You will need to logout for the change to take effect..
VBox status code: -1909 (VERR_VM_DRIVER_NOT_ACCESSIBLE)
Kenapa ya ? tolong dibantu… Mas wkt itu saya ikutan kopdar opensuse di rumah mas vavai. kalo mau iktan komunitas ubuntu yg gak cuman lewat forum/milis, tapi interaktif tatap muka dimana ya? sy tinggal di jakarta. thanks ya tolong kirim ke email sya.
P Harry mo tanya karnel 2.6.24-19-386 apa stabil?
btw, itu ubuntu server kan?
@agung – wah maaf komentarnya terlewat oleh saya. Tapi memang saya juga tidak begitu paham soal virtualbox juga.
.
Komunitas ubuntu tidak terlalu sering kopdar. Kalau ada yang mau kopdar, biasanya ada pengumumannya di milis.
.
Thanks
@alfian – stabil, dan ini beban servernya cukup berat (jutaan hits per bulan)
.
Thanks
terima kasih atas infonya..
hahaha wah repot mas klo quad core kedetek singgle core
klo dualcore sih masih agak mending….
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terima kasih atas infonya..
makasih infonya mas…
nice info 😉 Thanks
wah ga mudeng..
makasih infonya..
aaa
postnya pad berat..
mudeng bro
repot mas klo quad core kedetek singgle core
klo dualcore sih masih agak mending….
sepertinya akan bermanfaat buat saya pak. terima kasih
matur nuwun bos, tahu linux carmic ?
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Agak kurang ngerti bahasan si bos nih
Memang begitu adanya
agak nggak ngerti nih soal ubuntu
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nggak ngerti dari dulu nih soal ubuntu
Nggak ngerti nih soal ubuntu
but nice share
great share tips and solutions..
belajar solusi dulu ahhh
Nice share sob..
keep post..
Great share sob..
keeping share…
Terimaksih Inponya mas. Sangat membantu
nggak ngerti tuh sob soal Ubuntu..
but nice share
great share friends..
keeping share..
Where else could anyone get that kind of information in such a complete way of writing? I have a presentation incoming week, and I am on the lookout for such information
artikelnya keren sob..
thanks for share
Nggak ngerti bahasannya sob…
hehhehe
Thank you for another essential article. Where else could anyone get that kind of information in such a complete way of writing? I have a presentation incoming week, and I am on the lookout for such information
Wah brow kalo soal ubuntu ane baru coba-coba nich… masih katro… tapi salut dech artikelnya keren.. ;-P
tambah ilmu lagi nih…
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wah ga mudeng nih
Im sure youll reach so many people with what youve got to say.
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Linux… kayaknya bagus ya..
tapi aku masih setia ma windows.. hihihi. kali aja aku kapan2 mau coba linux. TQ infonya mas harry
What youre saying is completely true. I know that everybody must say the same thing, but I just think that you put it in a way that everyone can understand.
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I know that computer is a necessary for most of people. People can’t work without computer. With the development of tech. More high speed computer was develped and people can improve the work easily. Happy every body.
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