I was trying to connect TableAU to Cloudera Hadoop on Windows, every time I got an error saying ETIMEDOUT, no other error message can be found.
To solve this, make sure HiveServer 2 can be selected, and for Authentication Mechanism, choose Username and then type ‘hive‘ in the Username text.
HE.net provides free DDNS service, compatible with DynDNS’s update format.
Link: Dynamic DNS on HE.net.
I’m using Ubiquiti EdgeRouter Lite, Dynamic DNS support can be found from web GUI console, but the server address is not configurable.
Here is a copy of my config:
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dns { dynamic { interface pppoe0 { service dyndns { host-name ddns.record.my.domain login ddns.record.my.domain password [PASSWORD] server dyn.dns.he.net } } } } |
You can also configure from CLI.
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ubnt@ubnt:~$ configure [edit] ubnt@ubnt# edit service dns dynamic interface pppoe0 [edit service dns dynamic interface pppoe0] ubnt@ubnt# set service dyndns ubnt@ubnt# set service dyndns host-name ddns.record.my.domain ubnt@ubnt# set service dyndns login ddns.record.my.domain ubnt@ubnt# set service dyndns password PASSWORD ubnt@ubnt# set service dyndns server dyn.dns.he.net ubnt@ubnt# commit ubnt@ubnt# save |
1 Pick the right interface
2 Set server
3 DO NOT SAVE OR UPDATE FROM WEB GUI CONSOLE!
一个项目需求需要过滤HTTP头中的特定cookie项目。
代理使用nginx搭建，编译参数如下：
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./configure --with-cc-opt='-g -O2 -fstack-protector-strong -Wformat -Werror=format-security -D_FORTIFY_SOURCE=2' --with-ld-opt='-Wl,-Bsymbolic-functions -Wl,-z,relro' --prefix=/usr/share/nginx --conf-path=/etc/nginx/nginx.conf --sbin-path=/usr/sbin/nginx --http-log-path=/var/log/nginx/access.log --error-log-path=/var/log/nginx/error.log --lock-path=/var/lock/nginx.lock --pid-path=/run/nginx.pid --http-client-body-temp-path=/var/lib/nginx/body --http-fastcgi-temp-path=/var/lib/nginx/fastcgi --http-proxy-temp-path=/var/lib/nginx/proxy --http-scgi-temp-path=/var/lib/nginx/scgi --http-uwsgi-temp-path=/var/lib/nginx/uwsgi --with-debug --with-pcre-jit --with-ipv6 --with-http_ssl_module --with-http_stub_status_module --with-http_realip_module --with-http_addition_module --with-http_dav_module --with-http_geoip_module --with-http_gzip_static_module --with-http_image_filter_module --with-http_spdy_module --with-http_sub_module --with-http_xslt_module --add-module=/root/ngx_http_substitutions_filter_module/ --add-module=/root/build/lua-nginx-module/ --add-module=/root/build/ngx_devel_kit |
其中用到了两个插件：
https://github.com/simpl/ngx_devel_kit
https://github.com/openresty/lua-nginx-module
参考示例：
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location ~ ^/test/ { proxy_pass http://127.0.0.1:9988; include /etc/nginx/conf.d/filter_cookie.inc; } |
参考过滤脚本：
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# more /etc/nginx/conf.d/filter_cookie.inc set_by_lua $filter_cookie ' function filterCookie(cookie) HEADER = "SSSS" local ret = "" local i, j = string.find(cookie, HEADER .. "=") if (i == nil) then return cookie end if (i > 1) then ret = ret .. string.sub(cookie, 0, i-1) end local m, n = string.find(cookie, ";", j) if (n ~= nil) then ret = ret .. string.sub(cookie, n+1) end return ret end return filterCookie(ngx.var.http_cookie)'; |
测试用例
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print(filterCookie("")) print(filterCookie("aaa=1")) print(filterCookie("aaa=1; SSSS")) print(filterCookie("aaa=1; SSSS=")) print(filterCookie("aaa=1; SSSS=1")) print(filterCookie("aaa=1; SSSS=1;")) print(filterCookie("aaa=1; SSSS=1; ")) print(filterCookie("aaa=1; SSSS=1; a")) print(filterCookie("aaa=1; SSSS=1; a=2")) print(filterCookie("aaa=1; SSSS=1; a=2;")) print(filterCookie("SSSS")) print(filterCookie("SSSS=")) print(filterCookie("SSSS=1")) print(filterCookie("SSSS=1;")) print(filterCookie("SSSS=1; ")) print(filterCookie("SSSS=1; a")) print(filterCookie("SSSS=1; a=2")) print(filterCookie("SSSS=1; a=2;")) |