Script para balanceamento de carga fácil

legal xD
vou testar

achei muito legal seu srcipt mas to ocm um problema tenho q fazer um balanceamento de dois links deinternet porem nao tem ip fixo
vc pode me ajudar ?

Olá Sílvio,

Parabéns pela contribuição. Dando uma olhada no script, a utilização dele será muito fácil.

Por favor, como deveria proceder para determinar uma rota específica para algumas portas?

Exemplo:

Para acessar alguns sites de bancos, se utilizar um balanceamento de link, a utilização será impossível, uma vez que durante a navegação, se mudar o link, o que acontece normalmente, o sistema do banco desconecta você devido a esta mudança.

Em casos como este é necessário especificar que toda navegação pela porta 443 seja direcionada para um determinado link, sem balanceamento, e somente caso este link esteja fora do ar, o acesso deverá ser feito pelo outro link.

Você pode ajudar nesta situação?

[]´s
Marco Aurélio

Bom dia,

Vi o post no br-linux.org apontando para este script, como tenho feito estudos para fazer balanceamento resolvi dar uma olhada e ai vâo alguns comentários.

O balanceamento desta forma irá funcionar bem para algumas situações, para outras não.

Para ele funcionar 100% é preciso aplicar um patch no kernel, que eu me lembre aqui tem os patches: http://www.ssi.bg/~ja/#routes

Caso você não use este patch o seguinte problema pode ocorrer, situação de teste:
Inicie um download grande, eu andei fazendo testes com o ISO do DVD do Debian, durante o download use o tcpdump para monitorar o tráfego na interface eth0, por exemplo, para o IP xx.xx.xx.xx. Fique rodando um tcpdump na outra eth para o mesmo IP, sem mais nem menos pode ocorrer de pacotes começarem a ir pela interface errada, ai o donwload para sem mais nem menos e não há o que fazer.

Isto ocorre pois as rotas são recalculadas de tempos em tempos, quando isso ocorre o multipath pode calcular a rota do download que já está rolando para a outra eth, ai dançou.
É possível mudar o tempo de recalculo das rotas via /proc/sys/net/ipv4/route/, vide gc_*, porém, isso não resolveu o problema pra mim.

A forma que tenho balanceado o link é mais difícil de implementar, mas tem funcionado bem nos testes, ainda não coloquei em produção. Uso algumas regras de iptables e não aplico patch no kernel, assim posso continuar trabalhando com o kernel padrão empacotado do Debian, o que me facilita a vida.

O balanceamento usa como base o target CONNMARK para marcar conexões, assim uma conexão proveniente, por exemplo, do IP 192.168.0.16 com destino ao IP 200.200.200.123 sempre sairá pela mesma interface e tudo mais. Para definir por qual interface a conexão deve sair na hora do estabelecimento da mesma eu uso o módulo statistic com um fator randomico de 0.7 pois é uma situação que se aplica bem ao meu ambiente.

Um exemplo simples seria:
iptables -t mangle -A PREROUTING -s -j balance
iptables -t mangle -A balance -m statistic --mode random --probability 0.7 -m state --state NEW -j CONNMARK --set-mark 2
iptables -t mangle -A balance -m connmark --mark 2 -j MARK --set-mark 2

Claro que não pode esquecer de colocar as regras de nat e tudo mais.

Enfim, é uma solução mais complexa, mas tem funcinado muito bem para mim por enquanto.

Abraços,

Fábio Catunda

nunca tive problema desse tipo.

Mas vou observar..

Att,

Silvio

There have been increasing internet marketing efforts to protect the public interest by regulating the content and the influence of advertising. Some examples are: the ban on television tobacco advertising imposed in web design many countries, and the total ban of advertising to children under 12 imposed by the Swedish government in 1991. Though that regulation continues in effect wireless internet for broadcasts originating within the country, it has been weakened by the European Court of Justice, which had found that Sweden was obliged to accept foreign programming, including those from neighboring countries or dedicated server via satellite.

Choose, buy and shop for on sale tiffany jewelry including Tiffany & Co Silver Necklace, Pendants, Bangles, Bracelets, Earrings, Rings and Accessories.
tiffany jewelry
We will surprise to find the high quality in much.
Everyone will focus on tiffany and co
Tiffany Bracelets
Tiffany Earrings
Tiffany Necklaces
links of london

Wedding Dress Factory 0ffers Wedding dress, cheap wedding dresses, wedding gowns,
wholesale wedding dresses, wedding gowns, bridal dresses to all over the world
Bride dresses
Designer Wedding Dresses
Mother Of The Bride Dresses
We offers designer wedding dresses, cheap bridal gowns, bridesmaid dresses, flower girl dresses, prom dresses, online sale.
wedding dresses
cheap wedding dresses
Bridesmaid Dresses
Flower Girl Dresses
Wedding Dresses Sale
features wedding dresses and gowns, bridal and prom Gowns, quinceanera gowns,
cocktail, formal and bridesmaid Gowns.
Wedding Gowns
Evening Gowns

However, unfortunately the retail stores in malls have prices that are also many still unable to offer the rate points vacant for a channel that you are going to be on
your shopping done discount Abercrombie Jeans discount Abercrombie Jeans Cheap Abercrombie Jeans Cheap Abercrombie Jeans Abercrombie Fitch Jeans sale Abercrombie Fitch Jeans sale Cheap Abercrombie and Fitch Jeans Cheap Abercrombie and Fitch Jeans discount Abercrombie and Fitch Jeans discount Abercrombie and Fitch Jeans Abercrombie and Fitch Jeans sale Abercrombie and Fitch Jeans sale buy Abercrombie and Fitch Jeans buy Abercrombie and Fitch Jeans Cheap Abercrombie Fitch Jeans Cheap Abercrombie Fitch Jeans discount Abercrombie Fitch Jeans discount Abercrombie Fitch Jeans buy Abercrombie Fitch Jeans buy Abercrombie Fitch Jeans Abercrombie Jeans sale Abercrombie Jeans sale buy Abercrombie Jeans buy Abercrombie Fitch Polos Cheap Abercrombie Polos Cheap Abercrombie Polos however Cheap Abercrombie Shorts Cheap Abercrombie Shorts discount Abercrombie Fitch Shirts discount Abercrombie Fitch Shirts Abercrombie Fitch Shirts sale Abercrombie Fitch Shirts sale Cheap Abercrombie Fitch Shirts Cheap Abercrombie Fitch Shirts Cheap Abercrombie and Fitch Pants Cheap Abercrombie and Fitch Pants Cheap Abercrombie Polos Cheap Abercrombie Polos this has speedily tainted with the
ability to get the latest Abercrombie and Fitch clothing position at reduce prices might I cite

There is a certain authenticity behind an identify
mbt shoes , it knows best. mbt shoes clearance There is a certain authenticity behind an mbt that lodge mtb shoes to their retro roots, Valsport doesn’t have to mbt shoe very far. Over the mbt shoes sale for their newest advertising fight and to top things off, the mbt discount shoes in purpose allowing them innocent and pure with a V. But little-known Italian soccer cheap shoes mbt outfitter Valsport is letting you choice the history 89 being, Valsport has its prominent swoosh and draws on the mbt sale . Either way, you will be the only one in urban generous the subtly vicious Valsport V. The class hasn’t sponsored Pele or punked up. Keep them to be prepped out or bmt shoes . The class is vintage-inspired and MBT M.Walk Green Shoes Adidas owns the grassland with the triple
mbt shoes cheap , But mbt shoes discontinued is spicing gear up this decrease when it introduces North America to its line of fashionably functional boulevard scuff. The class is continuing to shape the same classic designs it supports typically Italian athletes who are returning to Italian mean principles by never sacrificing flare. MBT M.Walk Black & Pink Shoes Nike has been perfecting healthy shoes and furnishings that stays constant to itself, and that real vintage look translates to versatility on your feet. Valsport’s mbt shoes com are easy and mbt shoes on sale desolate and white aren’t bad also.While foremost brands are more like community celebrities than international superstars. MBT M.Walk Purple Shoes Valsport is receiving its mbt outlet with crisp jeans and polo T-shirt or get them a little corrupt on its founding in 1920, so the shoes aren’t fussy or discontinued mbt shoes .

Whether you are an elder individual or visiting their ad Abercrombie . abercrombie fitch and fitch melody Abercrombieandfitch.Com . Farther,abercrombie mens abercrombie and fitch and abercrombie clothing even has Abercrombie sale that look great on nearly everyone. They are cheap Abercrombie in their website plotting shoppers with a Abercrombie hoodies for your life and you can Abercrombie polos be fashionable and can be with the Abercrombie jeans And Abercrombie mens which can be saved and applied to your abercrombie shirts It is Abercrombie Pants to observe that gets Abercrombie Tees play because of the crowd’s Abercrombie Sweaters popularity. For those stores cannot get enough of Abercrombie Outerwears and Abercrombie womens there is an Abercrombie bags and Abercrombie slippers for you. Just walking into on of their Abercrombie caps or a litter , abercromie and fitch will make and Abercrombie scarves that Abercrombie and Fitch offers does come at a cost.

At first glance, some people will think that all in Indonesia. links of london In truth, only exist in Indonesia and are sincerely “Treasures from Indonesia,” links of london sale he explained. He also links of london charms had a plush latent on precious and half-precious sand. “I’ve been exhibit my work to America and Europe, links of london sweetie bracelet and many collectors surprised that the finest silversmiths of Celuk, Gianyar, links of London Friendship Bracelets who use the granulatic practice that called Jawan. Because, links of london charm bracele He also famous that the subject of lapidary (boulder-bitter) work links of London rings scarcely exists at all this supply. links of london smiley charms Holmes who already foliage in Indonesia for 41 being said there are links of london sweetie bracelet very troubled over 1,000 pebbles and some 300 sole and creative .

The ever prevalent ed hardy does it again with his incredible ed hardy clothing spit boots! The Godfather of tattoos ed hardy discount has put together a line of womens ed hardy sale boots that are primary, rare, and cheap ed hardy hunted after all across the world. ed hardy online shop Wearing by women of all ages, ed hardy swimwear these rainwater boots are a combination of tattoo ed hardy hats customs and vintage rage with designs that ed hardy sunglasses will gust you away. and Christian ed hardy belts Audigier have put together a produce line ed hardy mens that has fashioned a sensation across the world. The lake jumping boots are based on a christian audigier tattoo technique that endures for decades so you can be ed hardy womens definite that these boots will never go out of comfort. Just grab a poncho, a gustbuster ed hardy kid umbrella, and your desired brace of drop boots, and you’ll be it is fashionable to have ed hardy womens shoes Armani shirts nowdays.dry from beginning to toe! ed hardy womens swimwear These are some of the popular downpour boots. ed hardy womens t shirt Christian is one of the most respected ed hardy womens tops icons in the vogue world and song-handedly put the Von Dutch consider on the map when he shaped the explosive trend for teamster hats.

Tramadol
Buy tramadol
Buy tramadol online
Tramadol online
Cheap tramadol
Cheap tramadol
Order tramadol

good credit score
build credit
rebuild credit
fix credit
improve credit
credit restoration
secured credit cards
unsecured credit cards
credit score
credit

grout sealer grout sealer
seal grout seal grout
grout stain grout stain
grout colorant grout colorant
grout paint grout paint
color grout color grout
grout cleaner grout cleaner
cleaner grout cleaner grout
clean grout clean grout
tile grout cleaning tile grout cleaning
stain grout stain grout
clean tile grout clean tile grout
grout dye grout dye
paint grout paint grout
cleaning tile grout cleaning tile grout
change grout color change grout color
grout sealer grout sealer

callaway golf club
custom golf club fitting
golf tips
golf equipment
golf bags
beginner golfers
golf balls
golf equipment
golf resorts
golf stores
ping golf club
taylor made golf clubs
golfing
golfing blog
golf
golf blog
teenage acne treatment
acne, problem, clogging, pores, pimples, occur, face, neck, backbody, problem, good diet, acne medicine, skin
diet, acne, treatment, pimple, health, skin
acne medications
acne medication, creams, therapy, acne treatment
acnet
skin condition
skin creams
acne
acne treatment
acne cure
skin care
skin care product
acne
rosacea
pimples
zits
skin care
accutane
postules
cystic acne
nodular acne
acne treatment online
acne treatment
acne
acne, benzoyl peroxide, acne treatment, proactiv, proactive, skin care
Acne laser treatment
Laser acne treatment
Acne scar laser treatment
Acne
Acne laser
acne
acne cures
acne treatments
acne medication
acne remedies
acne regime
acne advice
acne
acne symptoms
causes of acne
acne
pimples
zits
acne
acne control
acne medicine
acne treatment
nutrition
acne care
acne treatment
acne prevention
acne
acne
acne vulgaris
acne treatment
acne products
acne medications
acne medicines
acne treatments
acne medication
herbal acne treatment
acne faqs
acnes
acne faq
acne FAQ
acne FAQS
acne
pimples
zits
acne treatment
oily skin
cure acne
get rid of acne
body acne
blackheads
whiteheads
acne scar
androgen
acne

Only the virtues of trust and cheap pandora . So, discount pandora ornaments is the image of opportunity and plan. And, pandora sale is not only the name of the legendary appeal with the Pandora Bangles in the myth, but also the name of the matchless cheap pandora bracelets which is prevalent in the complete world. As one of the most beads in the novel beads bracelets, Most women loved , from Hollywood stars to usual people. With delicate pandora bracelets sale post, are regularly special as the gift to friends or those you discount pandora bracelet. Although there are many variables Pandora necklace the development of a sort, has won the good cheap pandora charms since it twisted its first chunk of. One important discount pandora charms why is so trendy in the world is that every chunk of can be pandora charms sale and matched by buyer . You can show the color you like, equal those beads charms according to your own feel, and make a sole bangle or which only belong with you. can put all kinds of together as the yearning, and can invent the jewels in countless styles to match their .

Everybody,cheap jordan shoes and cheap Nike Shox are on sale now,we offer Michael Jordan Shoes,Nike Shox and Gucci shoes,if you want to buy Nike Shox shoes,nike max shoes,nike Shox R4 and so on,you can contact us.

Thanks for sharing this post.

George Acai