Foreman-porxy负载均衡搭建
本文接上篇puppet负载均衡的环境实验。
Foreman-proxy可以采用四层或者七层负载，都可以实现，在foreman的web界面添加一个smart-proxy，后端多个真实foreman-proxy处理的目的
个人采用的是haproxy实现的四层和七层代理，pm01和pm03是foreman-proxy服务器，ag01是foreman服务器，lvs是负载均衡服务器（vip在lvs01服务器上），上面代理了puppet，foreman-proxy业务。
5.1 Foreman-proxy七层负载均衡
因为七层在做https的代理时候，出现ssl证书验证问题，于是根据官方配置文件的提示，采用http代理，而不是https代理，同时将所有的ssl证书替换为lvs代理的ssl证书。
5.1.1 修改foreman-proxy配置文件
[root@pm01 puppet]# grep -v "#" /etc/foreman-proxy/settings.yml | grep -v "^$"
---
:settings_directory: /etc/foreman-proxy/settings.d
:ssl_ca_file: /var/lib/puppet/ssl/certs/ca.pem
:ssl_certificate: /var/lib/puppet/ssl/certs/lvs.jq.com.pem
:ssl_private_key: /var/lib/puppet/ssl/private_keys/lvs.jq.com.pem
:trusted_hosts:
- pm01.jq.com
- pm02.jq.com
- pm03.jq.com
- ag01.jq.com
- ag02.jq.com
- ag03.jq.com
- ca01.jq.com
- ca02.jq.com
- lvs01.jq.com
- lvs02.jq.com
- pc.jq.com
- lvs.jq.com
:daemon: true
:bind_host: 0.0.0.0
:http_port: 8000 #默认此处为:https_port:8443
:virsh_network: default
:log_file: /var/log/foreman-proxy/proxy.log
:log_level: DEBUG
5.1.2 修改foreman-proxy的foreman配置文件
[root@pm01 puppet]# cat /etc/puppet/foreman.yaml
---
:url: "https://ag01.jq.com"
:ssl_ca: "/var/lib/puppet/ssl/certs/ca.pem"
:ssl_cert: "/var/lib/puppet/ssl/certs/lvs.jq.com.pem"
:ssl_key: "/var/lib/puppet/ssl/private_keys/lvs.jq.com.pem"
:user: ""
:password: ""
:puppetdir: "/var/lib/puppet"
:puppetuser: "puppet"
:facts: true
:timeout: 10
:threads: null
5.1.3 Haproxy代理配置
[root@lvs01 haproxy]# grep -v "#" /etc/haproxy/haproxy.cfg | grep -v "^$"
global
maxconn 40000
ulimit-n 500000
log 127.0.0.1 local0 info
uid 99
gid 99
chroot /tmp
daemon
defaults
log global
retries 2
option redispatch
option dontlognull
option httpclose
balance roundrobin
timeout connect 30000ms
timeout client 30000ms
timeout server 30000ms
timeout check 2000
listen admin_stats
bind 0.0.0.0:8080
mode http
stats refresh 5s
stats enable
stats hide-version
stats realm Haproxy\ Statistics
stats uri /haproxy
stats auth admin:password
listen puppetmaster *:8140
mode tcp
option ssl-hello-chk
balance source
server pm01 pm01.jq.com:8140 check inter 2000 fall 3
server pm03 pm03.jq.com:8140 check inter 2000 fall 3
frontend foremanproxy
bind 0.0.0.0:8000
mode http
log global
option httplog
reqadd X-Forwarded-Proto:\ https
default_backend web_server
backend web_server
mode http
log global
option httplog
balance source
cookie SERVERID insert indirect nocache
server pm01 pm01.jq.com:8000 check inter 2000 fall 3
server pm03 pm03.jq.com:8000 check inter 2000 fall 3
同时，foreman-proxy运行在8000端口，也是安全的，
上图可以看出，信息到了8000端口，最后还是https在处理。
5.2 Foreman-proxy四层负载均衡
四层采用的是https的代理，haproxy配置如下：
listen foreman-proxy *:8443
mode tcp
option ssl-hello-chk
option tcplog
# #balance source
balance roundrobin
# #balance source
server pm01 pm01.jq.com:8443 check inter 2000 fall 3
server pm03 pm03.jq.com:8443 check inter 2000 fall 3
5.3 foreman web添加smart_proxy
foreman web界面添加smart_proxy，只需要添加lvs服务器上的foreman-proxy即可，如下：
四层负载：
http://lvs.jq.com:8000
七层负载：
https://lvs.jq.com:8443
5.4 负载测试
采用分别停止pm01和pm03服务器上foreman-proxy进程的方式测试，每次测试之前删除foreman页面上的主机和smart_proxy，然后再在web添加foreman-proxy地址，在pm01，pm03,ag01上执行puppet agent -t，可以发现，主机成功添加到主机页面。
