Skip to content

Latest commit

 

History

History
126 lines (118 loc) · 3.43 KB

Note.md

File metadata and controls

126 lines (118 loc) · 3.43 KB
Raw

lvscare release note

lvscare care --vs 10.103.97.12:6443 --rs 192.168.0.2:6443 --rs 192.168.0.3:6443 --rs 192.168.0.4:6443 \
--health-path / --health-schem http

Test

Clean your environment:

ip link del dev sealyun-ipvs
ipvsadm -C

start some nginx as realserver

docker run -p 8081:80 --name nginx1 -d nginx
docker run -p 8082:80 --name nginx2 -d nginx
docker run -p 8083:80 --name nginx3 -d nginx

lvscare care --vs 10.103.97.12:6443 --rs 127.0.0.1:8081 --rs 127.0.0.1:8082 --rs 127.0.0.1:8083 \
--health-path / --health-schem http

check ipvs rules:

ipvsadm -Ln
[root@iZj6c9fiza9orwscdhate4Z ~]# ipvsadm -Ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
TCP  10.103.97.12:6443 rr
  -> 127.0.0.1:8081               Masq    1      0          0         
  -> 127.0.0.1:8082               Masq    1      0          0         
  -> 127.0.0.1:8083               Masq    1      0          0

As you can see, all the real server added. You can curl vip:

[root@iZj6c9fiza9orwscdhate4Z ~]# curl 10.103.97.12:6443 
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
    body {
        width: 35em;
        margin: 0 auto;
        font-family: Tahoma, Verdana, Arial, sans-serif;
    }
</style>
</head>

delete a nginx

[root@iZj6c9fiza9orwscdhate4Z ~]# docker stop nginx1
nginx1
[root@iZj6c9fiza9orwscdhate4Z ~]# ipvsadm -Ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
TCP  10.103.97.12:6443 rr
  -> 127.0.0.1:8082               Masq    1      0          0         
  -> 127.0.0.1:8083               Masq    1      0          1

delete one more:

[root@iZj6c9fiza9orwscdhate4Z ~]# docker stop nginx2
nginx2
[root@iZj6c9fiza9orwscdhate4Z ~]# ipvsadm -Ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
TCP  10.103.97.12:6443 rr
  -> 127.0.0.1:8083               Masq    1      0          0

your vip still accessable:

[root@iZj6c9fiza9orwscdhate4Z ~]# curl 10.103.97.12:6443 
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
    body {
        width: 35em;
        margin: 0 auto;
        font-family: Tahoma, Verdana, Arial, sans-serif;
    }
</style>
</head>

delete all the real server:

[root@iZj6c9fiza9orwscdhate4Z ~]# docker stop nginx3
nginx3
[root@iZj6c9fiza9orwscdhate4Z ~]# ipvsadm -Ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
TCP  10.103.97.12:6443 rr
[root@iZj6c9fiza9orwscdhate4Z ~]# curl 10.103.97.12:6443 
curl: (7) Failed connect to 10.103.97.12:6443; 拒绝连接

all ipvs destination removed

Add then back:

[root@iZj6c9fiza9orwscdhate4Z ~]# docker start nginx1 nginx2 nginx3
nginx1
nginx2
nginx3
[root@iZj6c9fiza9orwscdhate4Z ~]# ipvsadm -Ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
TCP  10.103.97.12:6443 rr
  -> 127.0.0.1:8081               Masq    1      0          0         
  -> 127.0.0.1:8082               Masq    1      0          0         
  -> 127.0.0.1:8083               Masq    1      0          0

Welcom back!