ansible搭建apache+haproxy+keepalived
apache部分
1.创建角色
[devops@server1 ansible]$ mkdir roles
[devops@server1 ansible]$ cd roles
[devops@server1 roles]$ ls
[devops@server1 roles]$ ansible-galaxy init apache
- apache was created successfully
[devops@server1 roles]$ ls
apache
[devops@server1 roles]$ cd apache/
[devops@server1 apache]$ ls
defaults files handlers meta README.md tasks templates tests vars
2.编写任务
[devops@server1 apache]$ cd tasks/
[devops@server1 tasks]$ ls
main.yml
[devops@server1 tasks]$ \vi main.yml
---
- name: install httpd
yum:
name: httpd
state: present
- name: copy index.html
copy:
content: "{{ ansible_facts['hostname'] }}"
dest: /var/www/html/index.html
- name: configure httpd
copy:
src: httpd.conf
dest: /etc/httpd/conf/httpd.conf
ower: root
group: root
mode: 644
notify: restart httpd
- name : start httpd and firewalld
service:
name: "{{ item }}"
state: started
loop:
- httpd
- firewalld
- name: configure firewalld
firewalld:
service: http
permanent: yes
immediate: yes
state: enabled
里面有激发器，所以我们需要编写激发器
3.
- name: restart httpd
service:
name: httpd
state: restarted
- 把httpd和haproxy的配置文件放在templates目录下，有需求可以修改修改
[devops@server1 apache]$ cd templates/
[devops@server1 templates]$ ls
httpd.conf
haproxy部分
1.建立角色
[devops@server1 roles]$ ansible-galaxy init haproxy
[devops@server1 roles]$ cd haproxy/
[devops@server1 haproxy]$ ls
defaults files handlers meta README.md tasks templates tests vars
[devops@server1 tasks]$ \vi main.yml
-
name: install
yum:
name: haproxy
state: present -
name: configure haproxy
template:
src: haproxy.cfg.j2
dest: /etc/haproxy/haproxy.cfg
notify: restart haproxy -
name: start haproxy
service:
name: haproxy
state: started
3.复制haproxy配置文件到templates目录下
#---------------------------------------------------------------------
# Example configuration for a possible web application. See the
# full configuration options online.
#
# http://haproxy.1wt.eu/download/1.4/doc/configuration.txt
#
#---------------------------------------------------------------------
#---------------------------------------------------------------------
# Global settings
#---------------------------------------------------------------------
global
# to have these messages end up in /var/log/haproxy.log you will
# need to:
#
# 1) configure syslog to accept network log events. This is done
# by adding the '-r' option to the SYSLOGD_OPTIONS in
# /etc/sysconfig/syslog
#
# 2) configure local2 events to go to the /var/log/haproxy.log
# file. A line like the following can be added to
# /etc/sysconfig/syslog
#
# local2.* /var/log/haproxy.log
#
log 127.0.0.1 local2
chroot /var/lib/haproxy
pidfile /var/run/haproxy.pid
maxconn 4000
user haproxy
group haproxy
# turn on stats unix socket
stats socket /var/lib/haproxy/stats
#---------------------------------------------------------------------
# common defaults that all the 'listen' and 'backend' sections will
# use if not designated in their block
#---------------------------------------------------------------------
defaults
mode http
log global
option httplog
option dontlognull
option http-server-close
option forwardfor except 127.0.0.0/8
option redispatch
retries 3
timeout http-request 10s
timeout queue 1m
timeout connect 10s
timeout client 1m
timeout server 1m
timeout http-keep-alive 10s
timeout check 10s
maxconn 3000
stats uri /status
#---------------------------------------------------------------------
# main frontend which proxys to the backends
#---------------------------------------------------------------------
frontend main *:80
acl url_static path_beg -i /static /images /javascript /stylesheets
acl url_static path_end -i .jpg .gif .png .css .js
default_backend app
#---------------------------------------------------------------------
# static backend for serving up images, stylesheets and such
#---------------------------------------------------------------------
#---------------------------------------------------------------------
# round robin balancing between the various backends
#---------------------------------------------------------------------
backend app
balance roundrobin
{% for host in groups ['webserver'] %}
server {{ hostvars[host]['ansible_facts']['hostname'] }} {{ hostvars[host]['ansible_facts']['eth0']['ipv4']['address'] }}:80 check
{% endfor %}
3.编辑playbook
- hosts: webserver
roles:- apache
- hosts: lb
roles:- haproxy
4，
[devops@server1 ansible]$ vim inventory
[lb]
localhost
172.25.1.4
[test]
172.25.1.2
[prod]
172.25.1.3
[webserver:children]
prod
test
- haproxy
keepalived部分
1.建立角色
[devops@server1 roles]$ ansible-galaxy init keepalived
[devops@server1 roles]$ cd keepalived/
[devops@server1 keepalived]$ ls
defaults files handlers meta tasks templates vars
2。创建任务
-
name: install
yum:
name: keepalived
state: present -
name: configure keepalived
template:
src: keepalived.conf.j2
dest: /etc/keepalived/keepalived.conf
notify: restart keepalived -
name: start keepalived
service:
name: keepalived
state: started
3。编辑激发器
- name: restart keepalived
service:
name: keepalived
state: restarted
4.编辑模板
[devops@server1 templates]$ cp /etc/keepalived/keepalived.conf .
[devops@server1 templates]$ mv keepalived.conf keepalived.conf.j2
[devops@server1 templates]$ vim keepalived.conf.j2
! Configuration File for keepalived
global_defs {
notification_email {
[email protected]
[email protected]
[email protected]
}
notification_email_from [email protected]
smtp_server 192.168.200.1
smtp_connect_timeout 30
router_id LVS_DEVEL
}
vrrp_instance VI_1 {
state {{ STATE }}
interface eth0
virtual_router_id 23
priority {{ VRID }}
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
172.25.1.100
}
}
[devops@server1 ansible]$ vim apache.yml
–
- hosts: webserver
roles:- apache
- hosts: lb
roles:- haproxy
- hosts: lb
roles:- keepalived
[devops@server1 ansible]$ vim inventory
[lb]
localhost STATE=MASTER VRID=100
172.25.1.4 STATE=BACKUP VRID=50
[test]
172.25.1.2
[prod]
172.25.1.3
[webserver:children]
prod
test
检测
[devops@server1 ansible]$ ansible-playbook -C apache.yml
[devops@server1 ansible]$ ansible-playbook apache.yml 运行
测试
查看master节点vip,关掉master的keepalived后，在看，vip已经漂移到backup的节点，
网页还能访问到