虚拟机使用lvm管理新增磁盘

2015/04/28 | 常用软件,运维 | Zhiming Zhang | 暂无评论 | 2773 views

1：在虚拟机设置中添加两个新的磁盘，1个2G，1个5G（我挂载两个是因为另外一个我要做swap的实验，如果只用Lvm的话挂载一个5G即可） 2：登录系统，使用fdisk -l查看磁盘信息（看不到的请重启） 3：lvm管理 a)创建逻辑分区 fdisk /dev/sdc #因为磁盘是空的，所以我先创建了一个主分区玩玩，大小是1G n (新……

如何通过acl 让其他组的某个用户拥有读写权限

2015/04/22 | 基本知识,运维 | Zhiming Zhang | 暂无评论 | 2661 views

用户1：test1 组test1 用户2：test2 组test2 通过test1在/tmp下创建文件text touch test1.txt 查看权限： ls -al test1.txt 权限如下： -rw-rw-r– 切换到test2用户尝试修改test1.txt内容 ‘readonly’ opti……

Fedora21启用iptables服务及使用firewalld服务注意事项

2015/04/15 | 基本知识,运维 | Zhiming Zhang | 暂无评论 | 2526 views

安装Iptables 服务： yum install iptables-services 停止firewalld： systemctl stop firewalld mask firewalld: systemctl mask firewalld service iptables save ========================……

yum downgrade

2015/03/25 | 基本知识,运维 | Zhiming Zhang | 暂无评论 | 1553 views

yum downgrade vsftpd-2.0.5-12.el5

1	yum downgrade vsftpd-2.0.5-12.el5

shell中使用while循环ssh读取一行纪录

2015/03/16 | shell | Zhiming Zhang | 暂无评论 | 2773 views

cat 33.txt |while read LINE
do
  result=`ssh -n root@192.168.0.101 date`
  echo $result
done

1

2

3

4

5

cat 33.txt |while read LINE

do

result=`ssh -n root@192.168.0.101 date`

echo $result

done

-n

ruby regular Expressions

2015/03/03 | 基本知识,运维 | Zhiming Zhang | 暂无评论 | 1467 views

#!/usr/local/bin/ruby -w
def show_regexp(a,re)
  if a =~ re
    "#{$`}&lt;&lt;#{$&amp;}&gt;&gt;#{$'}"
  else
    "no match"
  end
end

puts show_regexp('very interesting',/t/)

puts show_regexp('Fats Waller',/a/)

1

2

3

4

5

6

7

8

9

10

11

12

#!/usr/local/bin/ruby -w

def show_regexp(a,re)

if a =~ re

"#{$`}<<#{$&}>>#{$'}"

else

"no match"

end

puts show_regexp('very interesting',/t/)

puts show_regexp('Fats Waller',/a/)

ruby block each

2015/02/27 | 基本知识,运维 | Zhiming Zhang | 暂无评论 | 1435 views

#!/usr/local/bin/ruby -w
#
#
#
def call_each
   animals = %w{ant bee cat dog elk}
   for animal in animals
     yield animal
   end
end

call_each {|animal_block| puts animal_block}

1

2

3

4

5

6

7

8

9

10

11

12

#!/usr/local/bin/ruby -w

#

def call_each

animals = %w{ant bee cat dog elk}

for animal in animals

yield animal

end

call_each {|animal_block| puts animal_block}

attr_reader,attr_writer

2015/02/27 | 基本知识,运维 | Zhiming Zhang | 暂无评论 | 1685 views

#!/usr/local/bin/ruby -w
#
class Song
   attr_reader :name,:artist,:duration
   attr_writer :name
   def initialize(name,artist,duration)
        @name = name
        @artist = artist
        @duration = duration
   end

   #same as attr_reader:name
   #def name
   #  @name
   #end

   #same as attr_writer:artist
   def artist=(new_artist)
      @artist=new_artist
   end
   def to_s
      "Song:#@name--#@artist(#@duration)"
   end

   def duration_in_minutes
       @duration/60.0
   end
   def duration_in_minutes=(new_duration)
       @duration = (new_duration*60).to_i
   end
end


song=Song.new("Bicyclops","Fleck",260)
puts song.to_s
puts song.name
song.name = "abc"
puts song.name

puts song.duration_in_minutes

song.duration_in_minutes = 6

puts song.duration_in_minutes

puts song.duration
puts song.artist
song.artist="gaga"
puts song.artist

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

#!/usr/local/bin/ruby -w

#

class Song

attr_reader :name,:artist,:duration

attr_writer :name

def initialize(name,artist,duration)

@name = name

@artist = artist

@duration = duration

end

#same as attr_reader:name

#def name

# @name

#end

#same as attr_writer:artist

def artist=(new_artist)

@artist=new_artist

end

def to_s

"Song:#@name--#@artist(#@duration)"

end

def duration_in_minutes

@duration/60.0

end

def duration_in_minutes=(new_duration)

@duration = (new_duration*60).to_i

end

song=Song.new("Bicyclops","Fleck",260)

puts song.to_s

puts song.name

song.name = "abc"

puts song.name

puts song.duration_in_minutes

song.duration_in_minutes = 6

puts song.duration_in_minutes

puts song.duration

puts song.artist

song.artist="gaga"

puts song.artist

Reason: java.io.IOException: Failed to create dir

2015/02/09 | 基本知识,运维 | Zhiming Zhang | 暂无评论 | 1754 views

do: mkdir -p /usr/share/activemq/activemq-data/localhost/KahaDB3 chmod 777 -R /usr/share/activemq/activemq-data/localhost/KahaDB /etc/init.d/activemq start check : netsta……

python 读取yahoo 天气api 获取北京天气情况

2015/01/30 | python,常用软件,运维 | Zhiming Zhang | 暂无评论 | 2680 views

代码如下：

#!/usr/bin/env python
# coding=utf-8
import urllib2
import xml.dom.minidom
try:
    url="http://weather.yahooapis.com/forecastrss?u=c&amp;w=2151330"
    request = urllib2.Request(url)
    response = urllib2.urlopen(request)
    print "Geting data from yahooapis...."
    data = response.read()
    #print data
    dom = xml.dom.minidom.parseString(data)

    root = dom.documentElement
    location = root.getElementsByTagName('yweather:location')
    city = location[0].getAttribute("city")
    weather_conditions=root.getElementsByTagName('yweather:condition')
    weather = weather_conditions[0].getAttribute('text')
    temp = weather_conditions[0].getAttribute('temp')
    print "City:",city
    print "weather:",weather
    print "temp:",temp
except Exception:
    print("there is something wrong")

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

#!/usr/bin/env python

# coding=utf-8

import urllib2

import xml.dom.minidom

try:

url="http://weather.yahooapis.com/forecastrss?u=c&w=2151330"

request = urllib2.Request(url)

response = urllib2.urlopen(request)

print "Geting data from yahooapis...."

data = response.read()

#print data

dom = xml.dom.minidom.parseString(data)

root = dom.documentElement

location = root.getElementsByTagName('yweather:location')

city = location[0].getAttribute("city")

weather_conditions=root.getElementsByTagName('yweather:condition')

weather = weather_conditions[0].getAttribute('text')

temp = weather_conditions[0].getAttribute('temp')

print "City:",city

print "weather:",weather

print "temp:",temp

except Exception:

print("there is something wrong")

熟悉Ansible,Docker,Zabbix,Python,Shell,Iptables的这么一个devops

标签目录：旧博客迁移

虚拟机使用lvm管理新增磁盘

如何通过acl 让其他组的某个用户拥有读写权限

Fedora21启用iptables服务及使用firewalld服务注意事项

yum downgrade

shell中使用while循环ssh读取一行纪录

ruby regular Expressions

ruby block each

attr_reader,attr_writer

Reason: java.io.IOException: Failed to create dir

python 读取yahoo 天气api 获取北京天气情况