國外代理伺服器ip推薦，代理訪問是什麼意思

背景：

最近貨運倉庫訪問伺服器有超時的情況。

需求：

需要抓到客戶端訪問請求的具體id和其耗時。

解決：

1、使用倉庫伺服器中的一台虛機作為代理，讓操作客戶端通過代理訪問服務端，通過日誌記錄具體的請求信息和響應耗時。

在代理伺服器上安裝squid

yum -y install squid
cat >> /etc/squid/squid.conf << EOF
logformat combined   %tl %6tr %>a "%rm %ru %rp HTTP/%rv" %>Hs %<st  %Ss:%Sh/%<a
access_log /var/log/squid/access.log combined
EOF
systemctl enable squid --now

具體的logformat釋義如下：

ts Seconds since epoch

tu subsecond time (milliseconds)

tr Response time (milliseconds)

>a Client source IP address

ui User name from ident

un A user name. Expands to the first available name

from the following list of information sources:

– authenticated user name, like %ul

– user name supplied by an external ACL, like %ue

– SSL client name, like %us

– ident user name, like %ui

tl Local time. Optional strftime format argument

default %d/%b/%Y:%H:%M:%S %z

[http::]rm Request method (GET/POST etc)

[http::]ru Request URL from client (historic, filtered for logging)

rp Request URL path excluding hostname

[http::]rv Request protocol version

[http::]>Hs HTTP status code sent to the client

[http::]<st Total size of reply sent to client (after adaptation)

[http::]>h Original received request header.

Usually differs from the request header sent by

Squid, although most fields are often preserved.

Accepts optional header field name/value filter

argument using name[:[separator]element] format.

Ss Squid request status (TCP_MISS etc)

Sh Squid hierarchy status (DEFAULT_PARENT etc)

在客戶端pc上設置代理伺服器：

l 直接搜索「代理」 ，點擊「代理伺服器設置」。

l 打開使用代理；輸入代理伺服器設置10.168.79.227 3128，並保存。關閉代理則將開關置為關即可。

l 打開客戶端能進行正常操作即配置成功。

在伺服器上/var/log/squid/access.log的輸出日誌如下，

通過filebeat採集到內網elk。

能通過各種維度分析請求的數據，比如分析url請求耗時的統計排序，請求耗時分布等，非常有助於分析系統問題！