open source load balancer linux

1. Introduction to Linux virtual serversLinux virtual server (LVS) is a high-availability server Load balancer cluster system. The system can provide Load Capacity proportional to the number and performance of server nodes, effectively improving service throughput, reliability, redundancy, adaptability, and high perfor

I. Main Server Load balancer Technologies 1. Cisco Ethernet channel network balancing) 2. WindowsNLB Technology 3. LinuxLVS Technology 4. Server Load balancer (such as F5) Ii. Redundancy Technology 1. CsicoHSRP Hot Backup route 2. Windows Cluster Technology 3. LinuxHA cluster technology 4. IBMAIX Cluster The

1 overviewIn order to guarantee the stable operation of the bastion host-instruction channel, it is necessary to implement the load balance of instruction channel, and study to determine the use of LVS software.LVS is the abbreviation for Linux virtual server, that is, the Linux server, the official site is: www.linuxvirtualserver.org2 LVS ArchitectureLVS set up

1. Install JDK properly under liunx. Not tired 2. Configure the server Load balancer server apache2.2.101. Download apache2.2.10 and install related components.Http://www.sunfreeware.com/indexintel10.htmldownload httpd-2.2.10.tar.gzInstallation Method:Decompression: tar-zxvf httpd-2.2.10.tar.gz . /Configure -- prefix =/usr/local/apache2 -- enable-auth-Anon -- enable-auth-dBm -- enable-Cache -- enable-disk-

.[Email protected] ~]# ipvsadm-a-t 192.168.60.200:80-r 192.168.60.132:80–g[Email protected] ~]# ipvsadm-a-t 192.168.60.200:80-r 192.168.60.144:80–gThe above two settings indicate that two new real server records are added to the virtual server 192.168.60.200, two real server IPs are 192.168.60.132 and 192.168, respectively. 60.144, Parameter "-G" Specifies that the operating mode of the virtual server is the direct route mode, which is the DR mode.After this is set up, when the user accesses the

. Instead of executing the LVS script we configured above, because Ldirectord will automatically call Ipvsadm to create the LVS routing table, we have described above using the IPVSADM command line to configure LVS in order to give readers a deeper understanding of IPVSADM implementation details and implementation mechanisms.If you are configuring LVS through the Piranha tool, you do not need to use the Ldirectord,piranha tool for the system process is pluse, this process will also automatically

I. preparations:1. VMWare workstaion 5.0 can install three Linux instances on Windows. You don't need it if you have multiple PCs.VMware 5.0 serial number, always has one for you-------------- For reference only !!!For Windows:6a8j6-ftjm7-l8q15-48h98WC9WN-N2U0G-804FG-4M8N6E2EU9-XYV26-Z2NFA-4Y9N3XLWPN-W476D-68NDF-5PTX3X24FW-90T4M-H8H6C-4MDX76a8l6-f2tqj-le7dp-4t1v0KJWPN-FKT48-505FK-4RHL060evk-fv5pk-l42f6-4khudT2405-V27DD-A8M6A-4WXQKELH4M-66LFV-D81DA-4PR

192.168.60.132:80–g[Email protected] ~]# ipvsadm-a-t 192.168.60.200:80-r 192.168.60.144:80–gThe above two settings indicate that two new real server records are added to the virtual server 192.168.60.200, two real server IPs are 192.168.60.132 and 192.168, respectively. 60.144, Parameter "-G" Specifies that the operating mode of the virtual server is the direct route mode, which is the DR mode.After this is set up, when the user accesses the 192.168.60.200 80 service, LVS assigns the request to

In Linux Streaming Server Load balancer, Layer7 identifies data streams (Connection Tracking ).1. the nf_conntrack that supports Layer7 does not really need to be destroyed. After that, you will feel that you need to change "data streams based on quintuple" to "data streams with fixed offsets based on application layer protocols, the sooner the better! Therefore,

Identification of Layer7 data streams (Connection Tracking) in Linux Streaming Server Load balancer 1. nf_conntrack supporting Layer7 is really unnecessary After the fire, you will feel the need to quickly change "data streams based on quintuple" to "data streams with fixed offset based on the application layer protocol". The sooner the better! Therefore, this pe

certificate verification probably failed due to a problem with the certificate (it might be expired, or the name might not match the domain name in the URL).If you‘d like to turn off curl‘s verification of the certificate, use the -k (or --insecure) option.Explanation: This issue was flagged as untrusted because the certificate was issued by us, but was actually successfully configured.7. Access using the browserFirst in the Windows system to add the hosts to resolve the aming.com, if you can n

0.0 112680 976 pts/0 R+ 18:25 0:00 grep --color=auto keepAlso need to be performed on two RSsh /usr/local/sbin/lvs_dr_rs.sh4. TestingTest Method 1:Enter the VIP in the browser 192.168.242.110 and then deliberately stop an RS nginx service, then refresh the browser to see the results.Test Method 2:In the scheduler, execute the relevant command to view the number of connections:[[emailprotected] ~]# ipvsadm -lnIP Virtual Server version 1.2.1 (size=4096)Prot LocalAddress:Port Scheduler F

Haproxy + Apache for Linux Server Load balancer Software Haproxy provides high availability, Server Load balancer, and reverse proxy Based on TCP and HTTP applications, especially for websites with extremely high loads that usually require session persistence or layer-7 proc

balancemember are members in the cluster. Port 8009 is the AJP port name of Tomcat. The above amendment: This was neglected during the test yesterday and was discovered only during the test at the company today. You must note that route = worker1 and route = worker2 in the balancermember line cannot be added. Once added, distributed access will not be performed through the Apache designation, therefore, you must remove it here. Otherwise, operations will only be performed in a tomcat container.

|+--------------------+|information_schema| | mysql| | node2| | test|+-------- ------------+4rowsinset (0.00sec) [[Emailprotected]~]#mysql -uroot-h172.16.16.2-p123456//Test once again mysql>showdatabases;+---- ----------------+|database|+---------- ----------+|information_schema| | mysql| | node2| | test|+--------------------+4rowsinset (0.00sec) 650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M02/74/50/wKioL1YZG5iDoufGAAEZu0M7444628.jpg "title=" Qq20151010220649.png "alt=" Wkiol1yzg5ido

Linux Server Load balancer TOP Command-display kernel chip Cache Information The Linux kernel needs to allocate memory for temporary objects such as tasks, device structures, and nodes. The cache distributor manages the cache of these types of objects. The cache distributor is deployed in the modern

Http://tcsrvs;}Use NGINX-T to check the configuration file for errors.[Email protected] nginx]# nginx-tNginx:the configuration file/etc/nginx/nginx.conf syntax is OKNginx:configuration file/etc/nginx/nginx.conf Test is successful[Email protected] nginx]#Then the browser verification: a refresh to jump to the other two up, indicating that the test was successful.650) this.width=650; "Src=" https://s3.51cto.com/wyfs02/M00/A3/3B/wKioL1mj7c_Tb7AeAABDYdw0gtE085.jpg-wh_500x0-wm_ 3-wmp_4-s_1794468385.

Add the following to the Nginx configuration file "/etc/nginx/nginx.conf" http node:such as domain name: admin.wxh.com load to two servershttp{//... Omit this line above other configuration content upstreamadmin.wxh.com{ server10.0.0.11:9000weight=1;server 10.0.0.11:8000weight=3;}server{ listen80; server_nameadmin.wxh.com;location/ {proxy_pass http://admin.mewxh.com; proxy_set_headerHost $host; proxy_set_headerx-real-ip $remote _addr; proxy_set_heade

Load BalancerIpvs:http://kb.linuxvirtualserver.org/wiki/ipvsNat:http://kb.linuxvirtualserver.org/wiki/lvs/natVip:http://kb.linuxvirtualserver.org/wiki/vipArp:http://kb.linuxvirtualserver.org/wiki/arp_issues_in_lvs/dr_and_lvs/tun_clustersTun:http://kb.linuxvirtualserver.org/wiki/lvs/tunHttp://www.linuxvirtualserver.org/VS-IPTunneling.htmlDr:http://kb.linuxvirtualserver.org/wiki/lvs/drHttp://www.linuxvirtualserver.org/VS-DRouting.htmlFnat:[Network] Ipvs

/arp_ignoreecho 0 >/proc/sys/net/ipv4/conf/lo/arp_announceecho 0 >/proc/sys/net/ipv4/conf/all/arp_ignoreecho 0 >/proc/sys/net/ipv4/conf/all/arp_announce;;Status# Status of Lvs-dr Real server.Islothere= '/sbin/ifconfig lo:0 | grep $VIP 'Isrothere= ' Netstat-rn | grep "lo:0" | grep $VIP 'if [! "$islothere"-O! "Isrothere"];then# either the route or the lo:0 device# not found.echo "LVS-DR Real server Stopped."Elseecho "LVS-DR Real server Running."Fi;;*)# Invalid entry.echo "$0:usage: $ {start|status