squid的mgr强大功能介绍(转)
squid的mgr可以提供某台正在运行中的squid的实时监控数据，这些数据不仅可以帮助我们分析squid的运行状态和缓存的效果，而且还有很多很多的秘密和玄机藏在里面噢。很多时候觉得squid已经非常优化，查看mgr之后或许会大吃一惊。
mgr的常用命令行：
/usr/local/squid/bin/squidclient -h 127.0.0.1 -p 80 mgr:info
其中-h指定ip地址，-p指定端口，mgr:info是mgr的最常用的指令，指令还有很多，执行：
/usr/local/squid/bin/squidclient -h 127.0.0.1 -p 80 mgr:
这行语句比前一句少了最后的一个info，这样就会打印出可用的指令了，指令太多，我还没有能摸索完……见附件1
记住几个指令：mgr:info mgr:5min mgr:60min，没事做的时候就敲敲。
mgr:info可以说是最常用的了，它提供了一个概述，请求量、命中率、缓存数量等等都包含在内，我就不一条条说了，不懂英文可找翻译。
另外，这些指令有一些是消耗系统资源比较大的，所以请勿在重要场合尝试，免得造成困扰。如果非要尝试，附件2中倒有一堆测试机。
如果无法正常查看mgr，证明是squid配置中关闭了mgr的访问权限，那么需要在squid配置里加上几句话打开权限：
acl adminBoxes src 127.0.0.1
acl manager proto cache_object
http_access allow manager adminBoxes
http_access deny all
我可以发誓，配置这几句话并不会把你的机器变成一台新的测试机，里面有几行可能跟原来配置重叠，这是强调，并且语句前后顺序也不能变。
其中只有一个常要改的东西，就是ip地址，这里配置的是本机，可以增加：
acl adminBoxes src 127.0.0.1 192.168.1.100
可以支持一个网段：
acl adminBoxes src 127.0.0.1 192.168.1.100 192.168.51.0/24
配好之后要记得reload一下squid
squid -k reconfigure
附件1（mgr指令大全）
mem Memory Utilization public
cbdata Callback Data Registry Contents public
events Event Queue public
squidaio_counts Async IO Function Counters public
config Current Squid Configuration hidden
ipcache IP Cache Stats and Contents public
fqdncache FQDN Cache Stats and Contents public
idns Internal DNS Statistics public
external_acl External ACL stats public
http_headers HTTP Header Statistics public
menu This Cachemanager Menu public
shutdown Shut Down the Squid Process hidden
offline_toggle Toggle offline_mode setting hidden
info General Runtime Information public
filedescriptors Process Filedescriptor Allocation public
objects All Cache Objects public
vm_objects In-Memory and In-Transit Objects public
openfd_objects Objects with Swapout files open public
pending_objects Objects being retreived from the network public
client_objects Objects being sent to clients public
io Server-side network read() size histograms public
counters Traffic and Resource Counters public
peer_select Peer Selection Algorithms public
digest_stats Cache Digest and ICP blob public
5min 5 Minute Average of Counters public
60min 60 Minute Average of Counters public
utilization Cache Utilization public
histograms Full Histogram Counts public
active_requests Client-side Active Requests public
storedir Store Directory Stats public
store_check_cachable_stats storeCheckCachable() Stats public
store_io Store IO Interface Stats public
pconn Persistent Connection Utilization Histograms public
refresh Refresh Algorithm Statistics public
forward Request Forwarding Statistics public
client_list Cache Client List public
asndb AS Number Database public
测试域名
squidclient -h www.youku.com -p 80 mgr:info
squidclient -h www.cctv.com -p 80 mgr:info
squidclient -h www.xinhuanet.com -p 80 mgr:info
squidclient -h www.people.com.cn -p 80 mgr:info
squidclient -h www.kuaiche.com -p 80 mgr:info
squidclient -h www.it168.com -p 80 mgr:info
squidclient -h www.qidian.com -p 80 mgr:info
squidclient -h www.vodone.com -p 80 mgr:info
squidclient -h www.hc360.com -p 80 mgr:info
squidclient -h www.12530.com -p 80 mgr:info
squidclient -h www.verycd.com -p 80 mgr:info
squidclient -h www.9you.com -p 80 mgr:info
squidclient -h www.duowan.com -p 80 mgr:info
squidclient -h www.poco.cn -p 80 mgr:info
squidclient -h www.blogchina.com -p 80 mgr:info
由附件2看来，中国使用squid作前端的网站还是非常多，附件2中有一部分都是CDN来的，机器多维护起来也晕乎晕乎。
现在是2009年3月17日4时，假如他们近期改掉了毛病，那证明这篇文章的传播速度还是挺快的
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另附
[root@D08043450 /root]# date
Thu Oct 29 11:45:46 CST 2009
[root@D08043450 /root]# /usr/local/squid/bin/squidclient -h www.youku.com -p 80 mgr:
HTTP/1.0 200 OK
Server: squid/2.5.STABLE13
Mime-Version: 1.0
Date: Thu, 29 Oct 2009 03:52:50 GMT
Content-Type: text/plain
Expires: Thu, 29 Oct 2009 03:52:50 GMT
Last-Modified: Thu, 29 Oct 2009 03:52:50 GMT
X-Cache: MISS from a05.www
Proxy-Connection: close
mem Memory Utilization public
cbdata Callback Data Registry Contents public
events Event Queue public
squidaio_counts Async IO Function Counters public
diskd DISKD Stats public
config Current Squid Configuration hidden
comm_incoming comm_incoming() stats public
ipcache IP Cache Stats and Contents public
fqdncache FQDN Cache Stats and Contents public
dns Dnsserver Statistics public
external_acl External ACL stats public
http_headers HTTP Header Statistics public
menu This Cachemanager Menu public
shutdown Shut Down the Squid Process hidden
offline_toggle Toggle offline_mode setting hidden
info General Runtime Information public
filedescriptors Process Filedescriptor Allocation public
objects All Cache Objects public
vm_objects In-Memory and In-Transit Objects public
openfd_objects Objects with Swapout files open public
pending_objects Objects being retreived from the network public
client_objects Objects being sent to clients public
io Server-side network read() size histograms public
counters Traffic and Resource Counters public
peer_select Peer Selection Algorithms public
digest_stats Cache Digest and ICP blob public
5min 5 Minute Average of Counters public
60min 60 Minute Average of Counters public
utilization Cache Utilization public
histograms Full Histogram Counts public
active_requests Client-side Active Requests public
storedir Store Directory Stats public
store_check_cachable_stats storeCheckCachable() Stats public
store_io Store IO Interface Stats public
pconn Persistent Connection Utilization Histograms public
refresh Refresh Algorithm Statistics public
forward Request Forwarding Statistics public
client_list Cache Client List public
netdb Network Measurement Database public
asndb AS Number Database public
本文来自CSDN博客，转载请标明出处：http://blog.csdn.net/zzz_781111/archive/2009/10/29/4742263.aspx
