N73上安装putty连接SSH
今天在N73手机上安装了putty for s60 3nd,以后就可以用它来登录njava了。
一 软件下载
1 PuTTY for Symbian OS
http://s2putty.sourceforge.net/
现在已经到PuTTY 1.5.2了
2 因为我已经禁用了ssh的密码登录了，所以只能用密钥登录。要在putty上使用openssh生成的私钥，还需要PuTTYgen来转换密钥。
http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html
二 安装使用
安装putty很简单，按一般s60的程序安装一样，因为开源，不需要破解
n73上的putty程序
Putty的主界面很简洁，就四个设置卡
n73上putty的主界面
n73上putty的主界面ssh设置卡里设置ssh登录端口，ssh版本，私钥位置等等参数
n73上putty的SSH设置
n73上putty的SSH设置显示卡里设置屏幕风辨率和是否全屏显示，这些设置都可以通过快捷键来完成的
n73上putty的显示设置
n73上putty的显示设置日志目录，最好设置到卡里
n73上putty的日志设置
设置服务器地址和用户名
n73上putty的基本设置
bear登录上了njava的服务器
登录njava成功
登录njava成功把分辨率调到了最高，字很小设置putty的字体大小
设置putty的字体大小
N73上的top指令列目录看到的效果
N73上的top指令
ls目录
ls目录
从巴士ping了一下baidu，3个287ms，还不错ping baidu.com
ping baidu.com
看来米国的网络就是好呀，ping米国的google速度嗷嗷的
ping Google.com
断开SSH的链接，
- 断开SSH连接
教程结束。。。。
2010年4月3号Google PR更新
2010年4月3号下午发现Google PR在更新，Njava的PR还是维持3，希望下3个月的周期里能有所上升。虽然说不重要了，但是受应试教育的影响，还是很期待这个分数的。同时今天Apple也正式发售IPAD了，希望有一天能弄一个来玩玩
使用find命令定期删除n天前的日志文件
日志和备份多了，硬盘不够了，所以删除之
bear@njava:/data/log$ find /data/log -mtime +3 -exec rm -rf {} \;
关于find参数-mtime,-ctime,-atime
bear@njava:~$ man find
-mtime n
File's data was last modified n*24 hours ago. See the comments for -atime to understand how rounding
affects the interpretation of file modification times.
-ctime n
File's status was last changed n*24 hours ago. See the comments for -atime to understand how rounding
affects the interpretation of file status change times.
-atime n
File was last accessed n*24 hours ago. When find figures out how many 24-hour periods ago the file
was last accessed, any fractional part is ignored, so to match -atime +1, a file has to have been
accessed at least two days ago.
linux的内存使用查看和实际可用内存计算
使用free,top等工具都可以查看linux的内存使用量，如
使用top命令
bear@njava:/etc/nginx/conf# top Tasks: 36 total, 2 running, 32 sleeping, 2 stopped, 0 zombie Cpu(s): 0.3%us, 0.3%sy, 0.0%ni, 99.3%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 524800k total, 478320k used, 46480k free, 0k buffers Swap: 0k total, 0k used, 0k free, 0k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 15658 www-data 23 0 49188 7280 4104 S 0.0 1.4 0:00.03 php5-cgi 15663 www-data 16 0 57888 28m 16m S 0.0 5.5 0:12.62 php5-cgi 15664 www-data 16 0 60704 32m 18m S 0.0 6.4 0:11.99 php5-cgi 15665 www-data 16 0 59488 29m 16m S 0.0 5.8 0:11.00 php5-cgi 15667 www-data 18 0 58388 30m 17m S 0.0 5.9 0:11.62 php5-cgi 15668 www-data 16 0 58628 28m 16m S 0.0 5.6 0:12.05 php5-cgi 15669 www-data 16 0 58660 29m 16m S 0.0 5.7 0:09.81 php5-cgi 15670 www-data 16 0 56220 26m 16m S 0.0 5.2 0:11.24 php5-cgi 15671 www-data 16 0 59432 29m 16m S 0.0 5.8 0:11.04 php5-cgi 15673 www-data 16 0 54596 25m 16m S 0.0 4.9 0:12.43 php5-cgi 15674 www-data 16 0 58036 27m 15m S 0.0 5.4 0:11.66 php5-cgi 19790 www-data 15 0 10856 2644 1008 S 0.0 0.5 0:02.18 nginx 19791 www-data 18 0 10856 2676 1060 S 0.0 0.5 0:01.55 nginx 19939 www-data 17 0 6936 3136 744 S 0.0 0.6 0:00.11 nginx-fcgi
使用free命令
bear@njava:/etc/nginx/conf# free
total used free shared buffers cached
Mem: 524800 476756 48044 0 0 0
-/+ buffers/cache: 476756 48044
Swap: 0 0 0
bear@njava:/etc/nginx/conf#
又那么多的内存参数字段：used,free,shared,buffers,cached
怎么计算实际剩余可用内存呢？
公式如下：
空闲内存=free+buffers+cached
看上去巴士的vps不适合做这个例子，呵呵，当作留存吧
ubuntu修改时区
查看时区
bear@njava:# date -R
修改为+8时区的上海
bear@njava:# cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
nginx的stub_status状态信息解释
打开nginx的stub_status可以通过页面链接看到如下信息
Active connections: 353 server accepts handled requests 532423 532423 3283276 Reading: 1 Writing: 1 Waiting: 351
他们是啥意思呢，解释如下
active connections：353 ＃nginx 正处理的活动连接数 353个。
server accepts handled requests
nginx启动到现在共处理了 532423个连接 ,
nginx启动到现在共成功创建 532423 次握手 ,
请求丢失数=(握手-连接),可以看出，我们没丢请求
总共处理了3283276 次请求。
Reading ：nginx 读取到客户端的 Header 信息数。
Writing ： nginx 返回给客户端的 Header 信息数。
Waiting ： Nginx 已经处理完正在等候下一次请求指令的驻留连接。开启 keep-alive 的情况下，这个值等于 active – (reading + writing)。
cacti的rrdtool画不出图来的问题
1 习惯性的把rrd的文件rm -rf *掉了，发现cron过了好多次都没画出图来
2 检查权限，权限ok的,cron的执行用户和/var/www/cacti/rra目录的拥有者是同一个用户
bear@njava:/var/www/cacti/rra$ sudo vi /etc/crontab # /etc/crontab: system-wide crontab # Unlike any other crontab you don't have to run the `crontab' # command to install the new version when you edit this file # and files in /etc/cron.d. These files also have username fields, # that none of the other crontabs do. SHELL=/bin/sh PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin # m h dom mon dow user command 17 * * * * root cd / && run-parts --report /etc/cron.hourly 25 6 * * * root test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.daily ) 47 6 * * 7 root test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.weekly ) 52 6 1 * * root test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.monthly ) */5 * * * * www-data php /var/www/cacti/poller.php > /dev/null 2>&1
3 把Poller Type由spine改成cmd.php，奇迹发生了，图被画出来了，之后再改回spine,运转正常
cacti通过snmp监控ubuntu9.10网卡流量遇到的问题
折腾无线，snmp总是链接不上，debug报如下错误；
+ Running data query [1]. + Found type = '3' [snmp query]. + Found data query XML file at '/var/www/cacti/resource/snmp_queries/interface.xml' + XML file parsed ok. + Executing SNMP walk for list of indexes @ '.1.3.6.1.2.1.2.2.1.1' + No SNMP data returned + Found data query XML file at '/var/www/cacti/resource/snmp_queries/interface.xml' + Found data query XML file at '/var/www/cacti/resource/snmp_queries/interface.xml' + Found data query XML file at '/var/www/cacti/resource/snmp_queries/interface.xml'
谷歌百度，终于找到解决办法，记录之。。。
bear@njava:/var/www/njava$ sudo vi /etc/snmp/snmpd.conf # First, map the community name (COMMUNITY) into a security name # (local and mynetwork, depending on where the request is coming # from): # sec.name source community #com2sec paranoid default public #com2sec paranoid default njava com2sec readonly default public bear@njava:/var/www/njava$ sudo /etc/init.d/snmpd restart
获取到后的数据源
+ Running data query [1]. + Found type = '3' [snmp query]. + Found data query XML file at '/var/www/cacti/resource/snmp_queries/interface.xml' + XML file parsed ok. + Executing SNMP walk for list of indexes @ '.1.3.6.1.2.1.2.2.1.1' + Index found at OID: '1.3.6.1.2.1.2.2.1.1.1' value: '1' + Index found at OID: '1.3.6.1.2.1.2.2.1.1.2' value: '2' + Index found at OID: '1.3.6.1.2.1.2.2.1.1.3' value: '3' + Located input field 'ifIndex' [walk] + Executing SNMP walk for data @ '.1.3.6.1.2.1.2.2.1.1' + Found item [ifIndex='1'] index: 1 [from value] + Found item [ifIndex='2'] index: 2 [from value] + Found item [ifIndex='3'] index: 3 [from value] + Located input field 'ifOperStatus' [walk] + Executing SNMP walk for data @ '.1.3.6.1.2.1.2.2.1.8' + Found item [ifOperStatus='Up'] index: 1 [from value] + Found item [ifOperStatus='Up'] index: 2 [from value] + Found item [ifOperStatus='Down'] index: 3 [from value] + Located input field 'ifDescr' [walk] + Executing SNMP walk for data @ '.1.3.6.1.2.1.2.2.1.2' + Found item [ifDescr='lo'] index: 1 [from value] + Found item [ifDescr='eth0'] index: 2 [from value] + Found item [ifDescr='eth1'] index: 3 [from value] + Located input field 'ifName' [walk] + Executing SNMP walk for data @ '.1.3.6.1.2.1.31.1.1.1.1' + Found item [ifName='lo'] index: 1 [from value] + Found item [ifName='eth0'] index: 2 [from value] + Found item [ifName='eth1'] index: 3 [from value] + Located input field 'ifAlias' [walk] + Executing SNMP walk for data @ '.1.3.6.1.2.1.31.1.1.1.18' + Found item [ifAlias=''] index: 1 [from value] + Found item [ifAlias=''] index: 2 [from value] + Found item [ifAlias=''] index: 3 [from value] + Located input field 'ifType' [walk] + Executing SNMP walk for data @ '.1.3.6.1.2.1.2.2.1.3' + Found item [ifType='softwareLoopback(24)'] index: 1 [from value] + Found item [ifType='ethernetCsmacd(6)'] index: 2 [from value] + Found item [ifType='ethernetCsmacd(6)'] index: 3 [from value] + Located input field 'ifSpeed' [walk] + Executing SNMP walk for data @ '.1.3.6.1.2.1.2.2.1.5' + Found item [ifSpeed='10000000'] index: 1 [from value] + Found item [ifSpeed='100000000'] index: 2 [from value] + Found item [ifSpeed='0'] index: 3 [from value] + Located input field 'ifHwAddr' [walk] + Executing SNMP walk for data @ '.1.3.6.1.2.1.2.2.1.6' + Found item [ifHwAddr=''] index: 1 [from value] + Found item [ifHwAddr='00:0D:60:D4:BC:04'] index: 2 [from value] + Found item [ifHwAddr='00:0D:60:D4:BC:05'] index: 3 [from value] + Located input field 'ifIP' [walk] + Executing SNMP walk for data @ '.1.3.6.1.2.1.4.20.1.2' + Found item [ifIP='127.0.0.1'] index: 1 [from regexp oid parse] + Found item [ifIP='8.8.8.8'] index: 2 [from regexp oid parse] + Found data query XML file at '/var/www/cacti/resource/snmp_queries/interface.xml' + Found data query XML file at '/var/www/cacti/resource/snmp_queries/interface.xml' + Found data query XML file at '/var/www/cacti/resource/snmp_queries/interface.xml' + Found data query XML file at '/var/www/cacti/resource/snmp_queries/interface.xml' + Found data query XML file at '/var/www/cacti/resource/snmp_queries/interface.xml' + Found data query XML file at '/var/www/cacti/resource/snmp_queries/interface.xml'
参考：http://www.linuxquestions.org/questions/linux-networking-3/cacti-traffic-stats-snmp-config-prob-378983/
ubuntu网卡流量实时查看
1 工具iftop
bear@njava:~# sudo apt-get install iftop bear@njava:~# sudo iftop
2 工具nload
bear@njava:~# sudo apt-get install nload bear@njava:~# nload
Nginx的防盗链模块NginxHttpAccessKeyModule
1 下载
bear@njava:/$wget http://wiki.nginx.org/images/5/51/Nginx-accesskey-2.0.3.tar.gz
2 配置
bear@njava:/$tar -xzvf Nginx-accesskey-2.0.3.tar.gz bear@njava:/$vi ../nginx-accesskey-2.0.3/config USE_MD5=YES USE_SHA1=YES ngx_addon_name=ngx_http_accesskey_module #HTTP_MODULES="$HTTP_MODULES $HTTP_ACCESSKEY_MODULE" HTTP_MODULES="$HTTP_MODULES ngx_http_accesskey_module" NGX_ADDON_SRCS="$NGX_ADDON_SRCS $ngx_addon_dir/ngx_http_accesskey_module.c"
3 重编译nginx
bear@njava:~/nginx-0.8.34# ./configure --conf-path=/etc/nginx/nginx.conf \--error-log-path=/var/log/nginx/error.log --pid-path=/var/run/nginx.pid --lock-path=/var/lock/nginx.lock --http-log-path=/var/log/nginx/access.log --http-client-body-temp-path=/var/lib/nginx/body --http-proxy-temp-path=/var/lib/nginx/proxy --http-fastcgi-temp-path=/var/lib/nginx/fastcgi --with-debug --with-http_stub_status_module --with-http_flv_module --with-http_ssl_module --with-http_dav_module --with-http_gzip_static_module --with-mail --with-mail_ssl_module --with-ipv6 --with-http_realip_module --with-http_geoip_module --with-http_xslt_module --with-http_image_filter_module --with-sha1=/usr/include/openssl --with-md5=/usr/include/openssl --add-module=../gnosek-nginx-upstream-fair-2131c73 --add-module=../nginx-accesskey-2.0.3
4 配置NginxHttpAccessKeyModule
bear@njava:~/nginx-0.8.34$ vi /etc/nginx/sites-available/njava
location /test {
accesskey on;
accesskey_hashmethod md5;
accesskey_arg "abc";
accesskey_signature "njavakey$remote_addr";
}
5 重启nginx
6 使用
使用的时候参考代码如下：
function get_acc_url($url){
return $url."?abc=" . md5('njavakey' . $_SERVER['REMOTE_ADDR']);
}
7 代码测试
http://www.njava.com/a.php
标签云
.htaccess 301 2010 Android apache cache cacti CSS date ddos discuz django fastcgi freebsd git google http iftop linux macos mysql nginx njava php pr python sed seo snmp ssh ubuntu ubuntu10.04 wordpress xdebug 优化 密码 文件 时区 用户 登录 监控 缓存 网站 脚本 颜色
WP Cumulus Flash tag cloud by Roy Tanck and Luke Morton requires Flash Player 9 or better.
近期评论
文章归档
链接表
QR Code
