Keepalived健康检查方式配置

HTTP_GET|SSL_GET

HTTP_GET | SSL_GET

{

url {

path /# HTTP/SSL 检查的url 可以是多个

digest <STRING> # HTTP/SSL 检查后的摘要信息 用工具genhash生成

status_code 200# HTTP/SSL 检查返回的状态码

}

connect_port 80 # 连接端口

bindto <IPADD>

connect_timeout 3 # 连接超时时间

nb_get_retry 3 # 重连次数

delay_before_retry 2 #连接间隔时间

}

# END OF HTTP_GET|SSL_GET

TCP健康检查方式

TCP_CHECK {

connect_timeout 5 #连接超时时间

nb_get_retry 3#重连次数

delay_before_retry 3 #重连间隔时间

connect_port 80 #健康检查的端口

} # TCP_CHECK

SMTP健康检查方式

SMTP_CHECK {

host {

connect_ip <IP ADDRESS>

connect_port <PORT> # 默认检查端口25

}

connect_timeout <INTEGER>

retry <INTEGER>

delay_before_retry <INTEGER>

helo_name <STRING>|<QUOTED-STRING> # "请求命令参数，可选

} #SMTP_CHECK

MISC

MISC_CHECK {

misc_path <STRING>|<QUOTED-STRING># 外部程序或者脚本路径

misc_timeout <INT># 执行脚本的超时时间

misc_dynamic#如果设置了misc_dynamic,healthchecker程序的退出状态码会用来动态调整服务器的权重（weight）.

#返回0：健康检查OK，权重不被修改

#返回1：健康检查失败，权重设为0

#返回2-255：健康检查OK，权重设置为：退出状态码-2，比如返回255，那么weight=255-2=253

}

工具genhash使用

[root@localhost bin]# ./genhash -h

genhash v1.0.0 (18/11, 2002)

Usage:

./genhash -s server-address -p port -u url

./genhash -S -s server-address -p port -u url

./genhash -h

./genhash -r

Commands:

Either long or short options are allowed.

./genhash --use-ssl-SUse SSL connection to remote server.

./genhash --server-sUse the specified remote server address.

./genhash --port-pUse the specified remote server port.

./genhash --url-uUse the specified remote server url.

./genhash --use-virtualhost -VUse the specified virtualhost in GET query.

./genhash --verbose-vUse verbose mode output.

./genhash --help-hDisplay this short inlined help screen.

./genhash --release-rDisplay the releas
e359
e number

[root@localhost bin]# ./genhash -s10.7.11.12 -p 80 -u /sysmng/index.jsp

MD5SUM = b7bd8391367e4cf9e4e85263ce313ae8

real_server 10.7.11.12 80 {

weight 1

TCP_CHECK {

connect_timeout 5

nb_get_retry 3

delay_before_retry 3

connect_port 80

}

HTTP_GET {

url {

path /

digest b7bd8391367e4cf9e4e85263ce313ae8

status_code 200

}

#url {

#path /mrtg/

#digest 9b3a0c85a887a256d6939da88aabd8cd

#}

connect_timeout 3

nb_get_retry 3

delay_before_retry 3

}

}

real_server 192.168.191.130 80 {

weight 3

inhibit_on_failure #在服务器健康检查失效时，将其设为0

TCP_CHECK {

connect_timeout 5 #连接超时时间

nb_get_retry 3#重连次数

delay_before_retry 3 #重连间隔时间

connect_port 80 #健康检查的端口

}

}

virtual_server 192.168.200.100 443 {

delay_loop 6

lb_algo rr

lb_kind NAT

persistence_timeout 50

protocol TCP

real_server 192.168.201.100 443 {

weight 1

SSL_GET {

url {

path /

digest ff20ad2481f97b1754ef3e12ecd3a9cc

}

url {

path /mrtg/

digest 9b3a0c85a887a256d6939da88aabd8cd

}

connect_timeout 3

nb_get_retry 3

delay_before_retry 3

}

}

}

real_server 172.16.1.12 25 {

weight 1

SMTP_CHECK {

connect_timeout 10

retry 2

delay_before_retry 5

helo_name "foo.bar.com"

host {

connect_ip 172.16.1.12

connect_port 25

bindto 172.16.1.2

}

host {

connect_ip192.168.155.11

connect_port 25

bindto 192.168.155.2

}

host {

connect_ip64.233.167.100

connect_port 587

}

}

}

real_server 192.168.200.6 1358 {

weight 1

MISC_CHECK {

misc_path "/usr/local/bin/script.sh arg1 arg2"

}

}

real_server 192.168.200.6 1358 {

weight 1

MISC_CHECK {

misc_path /usr/local/bin/script.sh

!misc_dynamic

}

}