Load balancing with Linux
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The document discusses different types of load balancing techniques in Linux including service, server, and network load balancing. It describes using DNS round-robin, routing (split access and multihomed), and bonding (sharing load across interfaces) for network load balancing. Configuration examples are provided for routing and bonding load balancing setups. Issues that may come up including interface outages and ARP settings are also mentioned.
Load balancing with Linux
- 1. LoadBalancing с Linux Какво е това нещо LoadBalancer Защо може да ми трябва подобно чудо </WebTech
- 2. LoadBalancing с Linux Видове LoadBalancing Service Server Network </WebTech
- 3. LoadBalancing с Linux Service LoadBalancing Web server balancing Mail server balancing DataBase server balancing </WebTech
- 4. LoadBalancing с Linux DNS Round-robin 1 2 3 + clusters + SAN DNS WEB WEB WEB + друг вид Distributed Network Storage www.site.com address 1 www.site.com address 1 www.site.com address 2 www.site.com address 3 Кой използва тази технолагия? </WebTech
- 5. LoadBalancing с Linux Network LoadBalancing Route (split access) Route (multihomed) Bonding(shared access) Комбинация </WebTech
- 6. LoadBalancing с Linux Route (spit access) /etc/iproute2/rt_tables 255 local 12 isp1 254 main 13 isp2 253 default ip route add $LOCAL_NET dev $IF_LOCAL table isp1 ip route add $NET_ISP1 dev $IF_ISP1 table isp1 ip route add 0/0 via $GW_ISP1 table isp1 ip route add $LOCAL_NET dev $IF_LOCAL table isp2 ip route add $NET_ISP2 dev $IF_ISP2 table isp2 ip route add 0/0 via $GW_ISP2 table isp2 </WebTech
- 7. LoadBalancing с Linux Route (spit access) ip rule add from $IP_ISP1 table isp1 ip rule add from $IP_ISP2 table isp2 iptables -t nat -A POSTROUTING -j SNAT -s $LOCAL_IP –to $IP_ISP1 iptables -t nat -A POSTROUTING -j SNAT -s $LOCAL_IP –to $IP_ISP2 </WebTech
- 8. LoadBalancing с Linux Route (multihomed) ip route add 0/0 nexthop via $GW_ISP1 weight 1 nexthop via $GW_ISP2 weight 2 ip rule add from fwmask 1 table isp1 ip rule add from fwmask 2 table isp2 iptables -A POSTROUTING -t nat -m mark --mark 1 -j SNAT --to $IP_ISP1 iptables -A POSTROUTING -t nat -m mark --mark 2 -j SNAT --to $IP_ISP2 </WebTech
- 9. LoadBalancing с Linux Route (multihomed) iptables -t mangle -A POSTROUTING -j MARK --set-mark 1 -m state --state NEW -o $IF_ISP1 iptables -t mangle -A POSTROUTING -j MARK --set-mark 2 -m state --state NEW -o $IF_ISP2 iptables -t mangle -A POSTROUTING -j CONNMARK --save-mark -m state --state NEW iptables -t mangle -A PREROUTING -j CONNMARK --restore-mark </WebTech
- 10. LoadBalancing с Linux Route (multihomed) patch-o-matic-ng (преди 12.05.2006) модули: random nth </WebTech
- 11. LoadBalancing с Linux Bonding (share load) Какво е представлява Какво може да прави Настройки Проблеми </WebTech
- 12. LoadBalancing с Linux Bonding (share load) Нужен софтуер # gcc -Wall -O -I/usr/src/linux/include ifenslave.c -o ifenslave # cp ifenslave /sbin/ifenslave Настройки /etc/modules.conf /etc/modprobe.conf </WebTech
- 13. LoadBalancing с Linux Bonding (share load) Monitoring arp_interval arp_ip_mon downdelay(ethernet) miimon Пример alias bond0 bonding options bond0 mode=balance-alb miimon=100 primary=eth0 updelay=50 </WebTech
- 14. LoadBalancing с Linux Bonding (share load) Type of bonding mode 0 или balance-rr mode 1 или active-backup mode 2 или balance-xor mode 3 или broadcast mode 4 или 802.3ad(link agregation) mode 5 или balance-tlb mode 6 или balance-alb </WebTech
- 15. LoadBalancing с Linux Bonding (share load) Проблемите ограниченията на ethernet arp_interval & arp_ip_target missing interfaces </WebTech
- 16. LoadBalancing с Linux Комбинации Bonding tunels за Българския трафик Split access за Международният трафик Проблемите </WebTech
- 17. LoadBalancing с Linux ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? Въпроси ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? </WebTech