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--- litespeed_wiki:lslb:ha [2018/08/02 20:49]
Jackson Zhang created
+++ litespeed_wiki:lslb:ha [2020/11/18 15:36] (current)
Lisa Clarke Redirect to new Documentation Site
@@ Line 1: / Line 1: @@
-====== How to enable HA for Web ADC? ======
+~~REDIRECT>https://docs.litespeedtech.com/products/lsadc/settings/~~
-LiteSpeed Web ADC HA setup provides a failover setup for two ADC Nodes. When one node is temporarily unavailable, the other one will automatically detect and take over the traffic.
-LiteSpeed Web ADC HA will use keepalived to detect the failover.
-===== Install and configure keepalived =====
-Before you configure ADC HA, You should install keepalived on both node 1 and node 2.
-On CentOS, you can do yum install:
-  yum install keepalived
-or on Ubuntu/Debian, you can do apt-get:
-  apt-get install keepalived
-Node1: 10.10.30.96
-Node2: 10.10.30.97
-Virtual IP: 10.10.31.31
-on Node1:
-vi /etc/keepalived/keepalived.conf
-  ###### start of VI_5 ######
-  vrrp_instance VI_5 {
-    state BACKUP
-    interface ens160
-    lvs_sync_daemon_inteface ens160
-    garp_master_delay 2
-    virtual_router_id 110
-    priority 170
-    advert_int 1
-    authentication {
-        auth_type PASS
-        auth_pass test123
-    }
-    virtual_ipaddress {
-.10.31.31
-    }
-  }
-  ###### end of VI_5 ######
-on Node2:
-vi /etc/keepalived/keepalived.conf
-  ###### start of VI_5 ######
-  vrrp_instance VI_5 {
-    state MASTER
-    interface ens160
-    lvs_sync_daemon_inteface ens160
-    garp_master_delay 2
-    virtual_router_id 110
-    priority 150
-    advert_int 1
-    authentication {
-        auth_type PASS
-        auth_pass test123
-    }
-    virtual_ipaddress {
-.10.31.31
-    }
-  }
-  ###### end of VI_5 ######
-Note: node1 virtual_router_id should be the same as node2; **"state MASTER/BACKUP"** doesn't really matter, since Higher priority one will be MASTER.
-Start keepalived:
-  service keepalived start
-On note 1, verify:
-  root@ha1-ubuntu:~# ip a
-: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
-    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
-    inet 127.0.0.1/8 scope host lo
-       valid_lft forever preferred_lft forever
-    inet6 ::1/128 scope host
-       valid_lft forever preferred_lft forever
-: ens160: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
-    link/ether 00:0c:29:c4:09:80 brd ff:ff:ff:ff:ff:ff
-    inet 10.10.30.96/16 brd 10.10.255.255 scope global ens160
-       valid_lft forever preferred_lft forever
-    inet 10.10.31.31/32 scope global ens160
-       valid_lft forever preferred_lft forever
-    inet6 fe80::20c:29ff:fec4:980/64 scope link
-       valid_lft forever preferred_lft forever
-On node 2:
-  root@ha2-ubuntu:~# ip a
-: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
-    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
-    inet 127.0.0.1/8 scope host lo
-       valid_lft forever preferred_lft forever
-    inet6 ::1/128 scope host
-       valid_lft forever preferred_lft forever
-: ens160: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
-    link/ether 00:0c:29:95:67:6d brd ff:ff:ff:ff:ff:ff
-    inet 10.10.30.97/16 brd 10.10.255.255 scope global ens160
-       valid_lft forever preferred_lft forever
-    inet6 fe80::20c:29ff:fe95:676d/64 scope link
-       valid_lft forever preferred_lft forever
-The VIP 10.10.31.31 is assigned to Higher priority Node 1 at the moment( node 1 priority 170, while node 2  priority 150).
-===== Configure HA on LiteSpeed Web ADC =====
- login to node 1 ADC Web Admin Console: sample configuration
-  Server Address	10.10.30.96:11122
-  Replication Cluster	10.10.30.96:11122,10.10.30.97:11122
-  Heart Beat Interval (secs)	10
-  Heart Beat Timeout (secs)	30
-  Is Gzip Stream	       Yes
-  Enable incremental sync      Yes
-  Is File Cache Enabled	       Yes
-  File Cache Server Address  10.10.30.96:1447
-{{ :litespeed_wiki:lslb:adc-ha-configuration-ha1.png?600 |}}