一、裝置環境說明
有兩組web業務伺服器，組名分别為web1group與web2group，裝置硬體配置、web根目錄存在異常，見下圖：
二、master配置說明
1、關鍵配置定義：
nodegroups:
web1group: 'L@SN2012-07-010,SN2012-07-011,SN2012-07-012'
web2group: 'L@SN2013-08-021,SN2013-08-022'
file_roots:
base:
- /srv/salt
pillar_roots:
- /srv/pillar
2、定義的檔案樹結構（具體檔案後續說明）
三、自定義grains_module
1）#vi /srv/salt/_grains/nginx_config.py
import os,sys,commands
def NginxGrains():
'''
return Nginx config grains value
'''
grains = {}
max_open_file=65536
#Worker_info={'cpus2':'01 10','cpus4':'1000 0100 0010 0001','cpus8':'10000000 01000000 00100000 00010000 00001000 00000100 00000010 00000001'}
try:
getulimit=commands.getstatusoutput('source /etc/profile;ulimit -n')
except Exception,e:
pass
if getulimit[0]==0:
max_open_file=int(getulimit[1])
grains['max_open_file'] = max_open_file
return grains
2)同步grains子產品
salt '*' saltutil.sync_all
3)重新整理子產品(讓minion編譯子產品)
salt '*' sys.reload_modules
4)驗證max_open_file key的value
[root@SN2013-08-020 _grains]# salt '*' grains.item max_open_file
SN2013-08-022:
max_open_file: 1024
SN2013-08-021:
SN2012-07-011:
SN2012-07-012:
SN2012-07-010:
四、配置pillar
本例使用分組規則定義pillar，即不同分組引用各自的sls屬性
1)定義入口top.sls
#vi /srv/pillar/top.sls
base:
web1group:
- match: nodegroup
- web1server
web2group:
- web2server
2)定義私有配置，本例隻配置web_root的資料，當然可以根據不同需求進行定制，格式為python的字典形式，即"key:value"。
#vi /srv/pillar/web1server.sls
nginx:
root: /www
#vi /srv/pillar/web2server.sls
root: /data
3）驗證配置結果：
#salt 'SN2013-08-021' pillar.data nginx
----------
root:
/data
#salt 'SN2012-07-010' pillar.data nginx
/www
五、配置States
1）定義入口top.sls
#vi /srv/salt/top.sls
'*':
- nginx
2)定義nginx配置及重新開機服務SLS,其中salt://nginx/nginx.conf為配置模闆檔案位置。
#vi /srv/salt/nginx.sls
pkg:
- installed
file.managed:
- source: salt://nginx/nginx.conf
- name: /etc/nginx/nginx.conf
- user: root
- group: root
- mode: 644
- template: jinja
service.running:
- enable: True
- reload: True
- watch:
- file: /etc/nginx/nginx.conf
- pkg: nginx
3）Nginx配置檔案（引用jinja模闆）
功能點：
1、worker_processes參數采用grains['num_cpus'] 上報值（與裝置CPU核數一緻）；
2、worker_cpu_affinity配置設定多核CPU根據目前裝置核數進行比對，分别為2\4\8\其它核；
3、worker_rlimit_nofile參數與grains['max_open_file'] 擷取的系統ulimit -n一緻；
4、worker_connections 參數理論上為grains['max_open_file']；
5、 root參數為定制的pillar['nginx']['root']值。
#vi /srv/salt/nginx/nginx.conf
# For more information on configuration, see:
user nginx;
worker_processes {{ grains['num_cpus'] }};
{% if grains['num_cpus'] == 2 %}
worker_cpu_affinity 01 10;
{% elif grains['num_cpus'] == 4 %}
worker_cpu_affinity 1000 0100 0010 0001;
{% elif grains['num_cpus'] >= 8 %}
worker_cpu_affinity 00000001 00000010 00000100 00001000 00010000 00100000 01000000 10000000;
{% else %}
{% endif %}
worker_rlimit_nofile {{ grains['max_open_file'] }};
error_log /var/log/nginx/error.log;
#error_log /var/log/nginx/error.log notice;
#error_log /var/log/nginx/error.log info;
pid /var/run/nginx.pid;
events {
worker_connections {{ grains['max_open_file'] }};
}
http {
include /etc/nginx/mime.types;
default_type application/octet-stream;
log_format main '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';
access_log /var/log/nginx/access.log main;
sendfile on;
#tcp_nopush on;
#keepalive_timeout 0;
keepalive_timeout 65;
#gzip on;
# Load config files from the /etc/nginx/conf.d directory
# The default server is in conf.d/default.conf
#include /etc/nginx/conf.d/*.conf;
server {
listen 80 default_server;
server_name _;
#charset koi8-r;
#access_log logs/host.access.log main;
location / {
root {{ pillar['nginx']['root'] }};
index index.html index.htm;
}
error_page 404 /404.html;
location = /404.html {
root /usr/share/nginx/html;
# redirect server error pages to the static page /50x.html
#
error_page 500 502 503 504 /50x.html;
location = /50x.html {
}
4)同步配置
#salt '*' state.highstate
（由于非第一次運作，看不到配置檔案比對的資訊）
5）驗證結果：
1、登入root@SN2013-08-021
#vi /etc/nginx/nginx.conf
2、登入root@SN2012-07-010