Prof Syd Xu bububa

💭

I may be slow to respond.

bububa / gist:5036347

Created February 26, 2013 06:25

Turnoff mysql unsafe statement warning

SET GLOBAL LOG_WARNINGS = 0

bububa / gist:4749020

Created February 10, 2013 09:58

fix percona conflict

	To achieve this you create a file, i.e.:
	/etc/apt/preferences.d/percona
	and put this inside:

	Package: *
	Pin: release l=percona
	Pin-Priority: 700

bububa / gist:4745678

Created February 9, 2013 15:19

pwdgen algorithm

	base62(base64(sha512(hexstr(md5(encrypt_key+encrypt_salt))+site_id+site_salt)))[0:len]

	// base64 -> base62
	// 'i' -> "ii"
	// '+' -> "ip"
	// '/' -> "is"
	// '=' -> "ie"

	其中encrypt_key是用户输入的加密口令, base62是为了去掉特殊字符.

bububa / gist:4705860

Created February 4, 2013 09:38

remove file by date

find . -mtime +5 -exec rm -rf {} \;

bububa / gist:4682063

Created January 31, 2013 10:47

Nginx限制ip连接数和流量控制

	http {
	limit_conn_zone $binary_remote_addr zone=perip:10m;
	server {
	......
	location {
	limit_conn perip 10;
	}
	......
	}
	}

bububa / gist:4482232

Created January 8, 2013 08:41

skynet setup demo

	export DOOZER_BOOT_URI="doozer:?ca=192.168.99.51:8046&ca=192.168.99.52:8046&ca=192.168.99.53:8046"
	// ON 192.168.99.51
	nohup /var/code/go/bin/doozerd -timeout 5 -l "192.168.99.51:8046" -w false -c "dzns" > /dev/null 2>&1 &
	// ON 192.168.99.52
	nohup /var/code/go/bin/doozerd -timeout 5 -l "192.168.99.52:8046" -w false -c "dzns" -a "192.168.99.51:8046" > /dev/null 2>&1 &
	printf '' \| /var/code/go/bin/doozer -a "doozer:?ca=192.168.99.51:8046" add "/ctl/cal/1"
	// ON 192.168.99.53
	nohup /var/code/go/bin/doozerd -timeout 5 -l "192.168.99.53:8046" -w false -c "dzns" -a "192.168.99.51:8046" > /dev/null 2>&1 &
	printf '' \| /var/code/go/bin/doozer -a "doozer:?ca=192.168.99.51:8046" add "/ctl/cal/2"

bububa / gist:4474239

Created January 7, 2013 11:02

du sort

du | sort -nr | cut -f2- | xargs du -hs

bububa / gist:4460663

Last active December 10, 2015 16:28

xibao mongo and db config

	sh.addShard("rs0/srv-7:27019")
	sh.addShard("rs1/srv-5:27019")
	sh.addShard("rs2/srv-6:27019")
	sh.enableSharding("oplog")
	sh.enableSharding("sem_crawler")
	sh.enableSharding("aggregate")
	sh.enableSharding("keyword_insights")
	sh.enableSharding('crawler')
	sh.enableSharding('words')
	sh.shardCollection("oplog.oplogs", {campaign_id:1})

bububa / gist:4449893

Created January 4, 2013 04:22

use sshfs to mount path from another server

sshfs [email protected]:/var/www /var/www -o idmap=user -o allow_other -o uid=33 -o gid=33

bububa / gist:4391037

Created December 27, 2012 19:08

tmux

	Ctrl+b " - split pane horizontally
	Ctrl+b % - 将当前窗格垂直划分
	Ctrl+b 方向键 - 在各窗格间切换
	Ctrl+b，并且不要松开Ctrl，方向键 - 调整窗格大小
	Ctrl+b c - (c)reate 生成一个新的窗口
	Ctrl+b n - (n)ext 移动到下一个窗口
	Ctrl+b p - (p)revious 移动到前一个窗口.
	Ctrl+b 空格键 - 采用下一个内置布局
	Ctrl+b q - 显示分隔窗口的编号
	Ctrl+b o - 跳到下一个分隔窗口