wlc 5508

LVS Features:1. Strong anti-load capability, using IP load Balancing technology, only to do distribution, so LVS itself does not have much traffic generated;2. Stable, reliable, self-perfect hot-standby program; (eg: lvs+keepalived)3. A wide range of applications can be load-balanced for all applications;4. Do not support regular processing, can not do static and dynamic separation.Four commonly used algorithms:1.RR: Round call, take turns assigning to backend server;2.WRR: The weight of the whe

K9W8, show inventory see the PID will become AIR-LAP1242AG-C-K9 (more than the default factory when a L, meaning lightweight). Lightweight mode requires WLC is often said in the domestic AC, foreign often said "wireless controller" support.Spit slot version of the name, K9W7 is fat, k9w8 is thin, but these two versions of the name in addition to this place, other places do not see any expression it is lightweight or autonomous place. From this URL yo

use a weighted, dynamic scheduling method./sbin/ipvsadm-a-T $VIP: 80-s WLC# now direct packets for this VIP to# The real server IP (RIP) inside the cluster/sbin/ipvsadm-a-T $VIP: 80-r $RIP 1-g-W 1/sbin/ipvsadm-a-T $VIP: 80-r $RIP 2-g-W 2/bin/touch/var/lock/subsys/ipvsadm >/dev/null;;Stop# Stop Forwarding Packetsecho 0 >/proc/sys/net/ipv4/ip_forward# Reset Ipvsadm/sbin/ipvsadm-c# bring down the VIP interface/sbin/ifconfig eth0:1 Down/sbin/route del $V

algorithm: With the current load status of RS, RS load: Overhead.LC: Minimum connection number algorithm (select overhead value is small)------------there is a "starting point problem"*WLC (default algorithm): Weighted minimum join algorithm-------------there is a "starting point problem"SED: The shortest expected latency algorithm-------------solve the starting point problem, there is a "continuous request problem"NQ: Sequence-free queueing algorith

id, should be unique within a network}Vrrp_instance vi_1{State Master #指定keepalived的角色, master Main, slave as slave, backup standbyInterface Eth0 #设置实例绑定到那个网卡virtual_router_id #VRID标记 (0~255), the main preparation to keep the samePriority #优先级, Master is higher than backup (at least 50)Advert_int 1 #检查间隔时间, default 1 secAuthentication {Auth_type PASS #指定要使用那一种认证 (pass| AH)Auth_pass 123456 #指定要使用的密码字符串}virtual_ipaddress {192.168.1.70 #定义虚拟IP (VIP), multi-set, per line-a}}#定义对外提供服务的LVS的VIP以及portVi

, regardless of the actual number of connections and system load on the server.* WRR weighted round call (Weighted Round Robin)The scheduler uses the "Weighted round call" scheduling algorithm to schedule access requests based on the different processing capabilities of the real server. This ensures that the processing capacity of the server handles more access traffic. The scheduler can automatically inquire about the load of the real server and adjust its weights dynamically.* LC Minimum Link

successive4: Weighted minimum connection algorithm (WLC) is to give each server a weight, the scheduler will keep the number of server connections and weights as far as possible balance5: The least-Connection scheduling algorithm based on locality (LBLC) is a scheduling algorithm for the target IP address of the request packet, the algorithm first finds the most recent destination IP address for all used servers based on the destination IP address of

, Marcus Green three sets of questions). 　　3, 61% Pass, suggest to the Sun's Web page before the test to do the first sun-given sample. Sun Sample URL: Https://tmn.sun.com/WLC/servlet/GuestLoginServlet?id=programmer 4, to pay attention to thread, more weight. Add a little to the constructor of every low-level stream, high-level stream, reader and writer of java.io.*, similar to listener, 　　Collection and so on, it is best to compare the JDK inside the

algorithm, which treats each server equally regardless of the actual number of connections and system load on the server. WRR weighted wheel called (Weighted Round Robin)The scheduler dispatches the access request according to the different processing ability of the real server through the "Weighted round call" scheduling algorithm. This ensures that the processing capacity of the server to handle more access traffic. The scheduler can automatically inquire about the load of the real server and

Dont_track_primary #忽略vrrp的interface错误 (default does not set) track_interface{#设置额外的监控, there is a problem in that NIC will switch Eth0 Eth1 } Mcast_src_ip #发送多播包的地址, if you do not set the default primary IP that uses a bound NIC Garp_master_delay #在切换到master状态后, delay gratuitous ARP Request virtual_router_id #VPID标记 Priority #优先级, high priority campaign for master Advert_int 1 #检查间隔, default 1 seconds Nopreempt #设置为不抢占 Note: This configuration can only be set on the backup host, and this host

MASTER #本实例启动状态: master/BACKUPInterfaceeth0 #监控的网络接口 virtual_router_idWuyi#vrrp实例 (same as a group master and standby server settings) priority -#优先级高的为master, not more than 255. (Backup can be set to Advert_int)1#均衡器检测间隔1秒 (server settings are the same) authentication {#验证类型及密码 (same as server settings) Auth_type PASS #认证方式, Pass or AH Auth_pass123456#认证密码} virtual_ipaddress {#虚拟ip地址virtual_ipaddress, you can define multiple192.168.1.150}} virtual_server192.168.1.150 3306{#定义虚拟服务器, just like t

Primary = 192.168.20.15 Service = LVs Backup_active = 1 Backup = 192.168.20.16 Heartbeat = 1 Heartbeat_port = 539 KeepAlive = 6 Deadtime = 18 Network = Direct Debug_level = NONE Monitor_links = 1 Virtual MYSQL { Active = 1 Address = 192.168.20.17 Eth0:1 Vip_nmask = 255.255.255.0 Port = 3306 expect = "OK" Use_regex = 0 Send_program = "/usr/local/bin/mysql_running_test%h" Load_monitor = None Scheduler = WLC p

, pwd, rm, rmalias chdg, chkdg, dropdg, iostat, lsdsk, lsod, mk Dg, mount offline, online, rebal, remap, umount dsget, dsset, lsop, shutdown, spbackup, spcopy, spget spmove, spset, startup chtmpl, lstmpl, mktmpl, rmtmpl chgrp, chmod, chown, groups, kgmod, lsgrp, wlc, lsusr mkgrp, mkusr, orapwusr, passwd, rmgrp, rmusr volcreate, voldelete, voldisable, volenable, volinfo volresize, volset, volstat ASMCMD> cp/tmp/rman. dbf + DATA/racdb/datafile/rman. dbf

AP, and how to use WLC to manage AP3. basic wireless security knowledge, including WEP, WPA, and wpa2. debugging and connection of wireless application software 5. maintain and configure the management of the WCS server and learn about the content of the wireless site survey. 6. Learn the Design and Implementation of Small wireless networks through comprehensive tests and real project explanations. Lan Network Security Solution Handling of ARP att

configuration file of the master ctorVim/etc/keepalived. conf // Add the following:Vrrp_instance VI_1 {State MASTER # BACKUP on the slave serverInterface eth1Virtual_router_id 51Priority 100 # priority. The higher the value, the higher the priority. The backup server is 90.Advert_int 1Authentication {Auth_type PASSAuth_pass 1111}Virtual_ipaddress {192.168.11.110}}Virtual_server 192.168.11.110 80 {Delay_loop 6 # (query the realserver status every 6 seconds and check whether the status is alive)L

equally, regardless of the actual number of connections and system load on the server. The Weighted Round Robin Scheduler uses the Weighted Round Robin Scheduling Algorithm to schedule access requests based on different processing capabilities of the Real Server. This ensures that servers with high processing capabilities can process more access traffic. The scheduler can automatically query the actual server load and dynamically adjust its weight. The Least Connections scheduler uses the "Leas

Service.-U: indicates that the virtual server provides the UDP Service.-F: indicates the service type marked by iptables.-S: scheduling algorithm used. Common options include rr | wrr | lc | wlc | lblc | lblcr | dh | sh | sed | nq-P: Persistent Service-R: Real Server-G: Specify the LVS working mode as direct routing mode.-I: Specify the LVS working mode as tunnel mode.-M: Specify the LVS working mode as NAT-W: actual server weight-C: displays the num

implementation in the browser usually has two policies: VcD48cD4xoaKx6rzHx + Wz/wlc + MrVvK + 3vcq9ysex6rzHx + Wz/agjpc9wpjxwpjxpbwcgc3jjjpq = "http://www.2cto.com/uploadfile/Collfiles/20140513/20140513090654230.jpg" alt = "\"/> When a variable enters the environment (for example, declaring a variable in a function), it is marked as "entering the environment". When the variable leaves the environment, it is marked as "out of the environment" and can

eth0Lvs_sync_daemon_inteface eth0Virtual_router_id 51Priority 100 # change 100 to 90 on the backup serviceAdvert_int 5Authentication {Auth_type PASSAuth_pass 1111}Virtual_ipaDdRess {192.168.9.200# (If there are multiple VIPs, enter the new line .)}}Virtual_server 192.168.9.200 80 {Delay_loop 6 # (query realserver status every 6 seconds)Lb_algo wlc # (lvs algorithm)Lb_kind DR # (Direct Route)Persistence_timeout 60 # (connections from the same IP addre

higher than the other high Preempt_delay #抢占延时, the default 5 minutes debug #debug级别 Authentication {#设置认证 Auth_type PASS #认证方式 auth_pass111111#认证密码} virtual_ipaddress {#设置vip192.168.202.200 }}Part IV: Virtual Server Virtual_server definition block, Virtual server definition is the most important project of keepalived framework, it is an essential part of keepalived.conf. This part is used to manage LVS, is to implement keepalive and LVS combination of modules. Ipvsadm commands can be implem