最近在配置LVS+keepalive+nginx的高可用遇到点问题
大家好,最近在aliyun下配置LVS,四台机器ip分别为:172.16.234.152(keepalived master) 172.16.234.150(keepalived backup) 172.16.234.151(nginx) 172.16.234.153(nginx) VIP:172.16.234.254。(firewalld已经都关闭了)按照教程配置完后访问遇到问题,单独访问realserver(153,151)nginx没有问题。但是通过虚拟IP curl 172.16.234.254 80 出不来。
1. 这个VIP是自己随便写的254, ping能通,但是CURL失败了,从信息看好像已经转发了,但是不知道哪里出了问题,就是看不到正常返回的信息。
2. 如果外部要访问,这个VIP应该如何写?
# curl 172.16.234.254 80(出不来)
# ipvsadm -Ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP172.16.234.254:80 wrr
-> 172.16.234.151:80 Route 9 0 0
-> 172.16.234.153:80 Route 1 0 1
# ipvsadm -lcn
IPVS connection entries
pro expire state source virtual destination
TCP 00:55SYN_RECV 172.16.234.254:58728 172.16.234.254:80172.16.234.151:80
通过ipvsadm查看发现state为SYN_RECV
本帖最后由 xiaoao133 于 2019-09-09 16:06 编辑
配置文件:
172.16.234.152 master keepalived:
global_defs {
notification_email {
}
notification_email_from *@gmail.com
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id LVS_DEVEL
}
vrrp_instance VI_1 {
state MASTER
interface eth0
virtual_router_id 55
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
172.16.234.254
}
}
virtual_server 172.16.234.254 80 {
delay_loop 6
lb_algo wrr
lb_kind DR
nat_mask 255.255.240.0
persistence_timeout 0
protocol TCP
real_server 172.16.234.151 80 {
weight 9
TCP_CHECK {
connect_timeout 10
nb_get_retry 3
delay_before_retry 3
connect_port 80
}
}
real_server 172.16.234.153 80 {
weight 1
TCP_CHECK {
connect_timeout 10
nb_get_retry 3
delay_before_retry 3
connect_port 80
}
}
}
# ip add
1: 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
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
link/ether 00:16:3e:10:ab:09 brd ff:ff:ff:ff:ff:ff
inet 172.16.234.152/20 brd 172.16.239.255 scope global dynamic eth0
valid_lft 314845240sec preferred_lft 314845240sec
inet 172.16.234.254/32 scope global eth0
valid_lft forever preferred_lft forever
先telnet VIP地址的80端口,看看通不通
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