Class: OpenVZ::Container

Inherits:
Object
  • Object
show all
Defined in:
lib/openvz/container.rb

Overview

OpenVZ::Container

Examples:

Sample Usage

c = Container.new("999")
c.start
c.stop
c.restart
c.mount
c.umount
c.destroy

Configration Access

c = Container.new("999")
puts c.config.privvmpages
c.config.privvmpages = "123:123"

Container Creation

c = Container.new("999")
c.create( :ostemplate => "debian-6.0-bootstrap", :config => "vps.unlimited" )
c.debootstrap( :dist => "squeeze", :mirror => "http://ftp.at.debian.org" )
c.cp_into(:src => "/etc/resolv.conf", :dest => "/etc/resolv.conf")
c.start
c.command("hostname -f")

Author:

  • Stefan Schlesinger

Defined Under Namespace

Classes: Config, StatemachineError

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(ctid = false) ⇒ Container

Returns a new instance of Container.



37
38
39
40
41
42
43
44
45
 
# File 'lib/openvz/container.rb', line 37

def initialize(ctid=false)
    @ctid       = ctid
    @vzctl      = "/usr/sbin/vzctl"
    @vzmigrate  = "/usr/sbin/vzmigrate"
    @configfile = "/etc/vz/conf/#{ctid}.conf"

    @config     = Config.new(load_config_file)
    @config.add_observer(self)
end

Instance Attribute Details

#config ⇒ Object

Returns the value of attribute config.



30
31
32
 
# File 'lib/openvz/container.rb', line 30

def config
  @config
end

#ctid ⇒ Object (readonly)

Returns the value of attribute ctid.



31
32
33
 
# File 'lib/openvz/container.rb', line 31

def ctid
  @ctid
end

#rw config(config) ⇒ Object

OpenVZ::Container

Examples:

Sample Usage

c = Container.new("999")
c.start
c.stop
c.restart
c.mount
c.umount
c.destroy

Configration Access

c = Container.new("999")
puts c.config.privvmpages
c.config.privvmpages = "123:123"

Container Creation

c = Container.new("999")
c.create( :ostemplate => "debian-6.0-bootstrap", :config => "vps.unlimited" )
c.debootstrap( :dist => "squeeze", :mirror => "http://ftp.at.debian.org" )
c.cp_into(:src => "/etc/resolv.conf", :dest => "/etc/resolv.conf")
c.start
c.command("hostname -f")

Author:

  • Stefan Schlesinger



28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
 
# File 'lib/openvz/container.rb', line 28

class Container

    attr_accessor :config
    attr_reader :ctid

    class StatemachineError < StandardError;end
    class Config            < ::OpenVZ::ConfigHash ; end


    def initialize(ctid=false)
        @ctid       = ctid
        @vzctl      = "/usr/sbin/vzctl"
        @vzmigrate  = "/usr/sbin/vzmigrate"
        @configfile = "/etc/vz/conf/#{ctid}.conf"

        @config     = Config.new(load_config_file)
        @config.add_observer(self)
    end


    # Start a container
    #
    def start
        cmd = "#{@vzctl} start #{@ctid}"
        execute(cmd)
    end


    # Stop a container
    #
    def stop
        cmd = "#{@vzctl} stop #{@ctid}"
        execute(cmd)
    end


    # Restart a container
    #
    def restart
        cmd = "#{@vzctl} restart #{@ctid}"
        execute(cmd)
    end


    # Mount a container
    #
    def mount
        cmd = "#{@vzctl} mount #{@ctid}"
        execute(cmd)
    end


    # Umount a container
    #
    def umount
        cmd = "#{@vzctl} umount #{@ctid}"
        execute(cmd)
    end


    # Destroy a container
    #
    def destroy
        cmd = "#{@vzctl} destroy #{@ctid}"
        execute(cmd)
    end


    # Checkpoint the container
    #
    def checkpoint(snapshot_path)
        cmd = "#{@vzctl} chkpnt #{@ctid} --dumpfile #{snapshot_path}"
        execute(cmd)
    end


    # Restore a checkpoint
    #
    def restore(snapshot_path)
        cmd = "#{@vzctl} restore #{@ctid} --dumpfile #{snapshot_path}"
        execute(cmd)
    end
    
    # Migrate container to another node
    #
    def migrate(destination_address, options=%w(--remove-area yes --online --rsync=-az))
        cmd = "#{@vzmigrate} #{options.join ' '} #{destination_address} #{@ctid}"
        execute(cmd)
    end


    # Update one or multiple Container properties and keep the configration
    # object up to date
    #
    # @param [Hash] The options to update, eg. `{ :privvmpages => '123:123' }`
    def set(options = {})
        # Construct a set command
        cmd = "#{@vzctl} set #{@ctid} --save"

        options.each do |opt,val|
            cmd << " --#{opt}"
            cmd << " #{val}"
        end

        execute(cmd)

        # Each time we update a setting, reload the configuration.
        @config.load(@ctid)
    end


    # Create a new empty instance from a template.
    #
    # @example Create a new empty container from a template.
    #   The following example will create a container, from an empty
    #   template, which can be used to bootstrap the whole installation
    #   later on. It will as well apply the vps.unlimited template config.
    #
    #   container.create(:ostemplate => "debian-6.0-bootstrap", :config => "vps.unlimited")
    #
    # @param [Hash] options you want to pass to the create statement.
    def create(options={})
        unless options[:ostemplate]
            # We need at least a valid ostemplate
            raise ArgumentError, "Create requires argument :ostemplate."
        end

        cmd = "#{@vzctl} create #{@ctid}"

        options.each do |opt,val|
            cmd << " --#{opt}"
            cmd << " #{val}"
        end

        execute(cmd)

        Log.debug("Reading new container configuration file: #{@configfile}")
        @config     = Config.new(load_config_file)
        @config.add_observer(self)
    end


    # Bootstrap a Debian container, this requires /usr/sbin/debootstrap to
    # be installed. Executing this function usually takes a while.
    #
    # @example Debootstrap a container object.
    #   container.debootstrap(:dist => "squeeze", :mirror => "http://cdn.debian.net/debian")
    #
    # @example Debootstrap a container, include and exclude certain packages.
    #   container.debootstrap(
    #       :dist    => "squeeze",
    #       :mirror  => "http://cdn.debian.net/debian",
    #       :include => "libreadline6,screen,file,less,dnsutils,tcpdump,vim-nox,puppet,facter",
    #       :exclude => "dhcp-client,dhcp3-client,dhcp3-common,dmidecode,gcc-4.2-base,module-init-tools,tasksel,tasksel-data,libdb4.4,libsasl2-2,libgnutls26,libconsole,libgnutls13,libtasn1-3,liblzo2-2,libopencdk10,libgcrypt11",
    #   )
    #
    # @param [Hash] options you want to pass to the bootstrapping tool.
    def debootstrap(options={})
        cmd  = "/usr/sbin/debootstrap"

        options.each do |opt,val|
            unless opt.to_s =~ /dist|dest|mirror/
                cmd << " --#{opt} #{val}"
            end
        end

        cmd << " #{options[:dist]}"
        cmd << " #{@config.ve_private}"
        cmd << " #{options[:mirror]}"

        execute(cmd)

        # FIXME - Remove gettys from inititab automatically. We
        # Need a searchandreplace function first... :-)
        #
        # Util.searchandreplace( "#{@config.ve_private}/etc/inittab",
        #                        "/^(?!#)(.*\/sbin\/getty)/", 
        #                        '#\1')
    end

    # Write into or copy a file into a container
    #
    # The destination file will be prepended with the containers private directory. If
    # you specify a source, this is relative to the virtualization hosts root directory.
    #
    #
    # @example Create /etc/hostname
    #
    #   container.file('/etc/hostname', :content => 'vm01')
    #
    # @example Copy a file from /etc/vz/template.conf/hosts (host) to /etc/hosts (container)
    #
    #   container.file('/etc/hosts', :source => '/etc/hosts'
    #
    #
    # @param filename Destination filename, relative to the containers root
    # @param :source  The source filename, relative to the virtualization hosts root directory
    # @param :content Pass a string which will be written to the file.
    # @param :mode    Specify the file mode.
    def file(filename, options={})
        unless filename
            raise ArgumentError, "file requires destination filename as first argument."
        end

        if options[:source] and options[:content]
            raise ArgumentError, "file can either take :source or :content as an argument."
        end

        destination ="#{@config.ve_private}/#{filename}"

        if options[:source]
            FileUtils.cp(options[:source], destination)
        end

        if options[:content]
            File.open(destination, 'w') { |file|
                file.write(options[:content])
            }
        end

        if options[:mode]
            FileUtils.chmod options[:mode], destination
        end
    end


    # Copy a file from the hardware node into the container. (OBSOLETE)
    #
    # @example Copy resolv.conf
    #     container.cp_into(
    #          :src => '/etc/resolv.conf',
    #          :dst => '/etc/resolv.conf'
    #     )
    #
    # @param [Hash] define
    def cp_into(options={})
        cmd = "/bin/cp #{options[:src]} #{@config.ve_private}/#{options[:dst]}"
        execute(cmd)
    end


    # Run a shell command within the container.
    #
    # @example Update the package sources.
    #    container.command("aptitude update")
    #
    # @param [String] Command to be executed.
    def command(command)
        cmd = "#{@vzctl} exec2 #{@ctid} "
        cmd << command
        execute(cmd)
    end


    # Return the current machine status string.
    # 
    # @example
    #   puts container.status()
    #   exist mounted running
    def status
        cmd = "#{@vzctl} status #{@ctid}"
        status = execute(cmd).split(/\s/)
        Log.debug("Container (#{@ctid}) status requested: #{status}")
        status.drop(2)
    end


    # Return the current uptime in seconds.
    # Return zero if the container is not running.
    #
    # @example
    #   puts container.uptime()
    #   1188829
    def uptime
      return 0 unless status.include? "running"
      raw = command "cat /proc/uptime"
      Log.debug("Container (#{@ctid}) uptime requested: #{raw}")
      raw.split(/\W/).first.to_i
    end

    # Add veth to a CT
    # vzctl set <CTID> --netif_add <ifname>[,<mac>,<host_ifname>,<host_mac>,<bridge>]
    #
    # @param [Hash] interface settings (keys as listed above)
    def add_veth veth
      cmd = "#{@vzctl} set #{@ctid} --netif_add #{veth[:ifname]},#{veth[:mac]},#{veth[:host_ifname]}," \
            "#{veth[:host_mac]}, #{veth[:bridge]}"
      execute(cmd)
    end


    ####
    #### Helper methods
    ####


    def state_require(*opts)
        current_state = status
        if current_state & opts
            puts "req: #{opts.join("-")}, cur: #{current_state.join("-")}"
            return true
        else
          raise StateMachineError, "Required container status not met for this action. req: #{opts.join("-")}, cur: #{current_state.join("-")}"
        end
    end


    # Check whether current_state == :require||:validate
    #
    def state(mode, action)
        current_state = self.status()

        if current_state & @statemachine_options[action.to_sym][mode.to_sym]
            return true
        end

        raise StateMachineError,
           "Required container status not met. req: #{@state_control[:action]}, cur: #{state}"
    end


    # Notify Method! :-) Config objects will notify, as soon as they are changed.
    #
    def update(key, value)
        set(key.to_sym => value)
    end


    # Load the container configration file.
    #
    def load_config_file
        data = {}
        if File.exists?(@configfile)
            File.open(@configfile, "r").each_line do |line|
                # strip blank spaces, tabs etc. off the lines
                line.gsub!(/\s*$/, "")
    
                if (line =~ /^([^=]+)="([^=]*)"$/)
                    key = $1.downcase
                    val = $2
    
                    case key
                        when /^ve_(private|root)$/
                            data[key] = val.gsub!(/\$VEID/, @ctid)
                        else
                            data[key] = val
                    end
                end
            end
        end
        data
    end


    # TODO: implement :-)
    #
    # NETIF="ifname=eth0,
    #        bridge=vzbr303,
    #        mac=02:01:79:15:03:02,
    #        host_ifname=veth17915.303,
    #        host_mac=12:01:79:15:03:02"
    #def load_net_config
    #    if @config.netif ### DOES THAT WORK?
    #        str = @config.netif

    #        if str =~ /ifname=([^,]+),bridge=([^,]+),mac=([^,]+),host_ifname=([^,]+),host_mac=([^,]+)/
    #            @net.ifname      = $1
    #            @net.bridge      = $2
    #            @net.mac         = $3
    #            @net.host_ifname = $4
    #            @net.host_mac    = $5
    #            @net.type        = "bridged"
    #            ### MISSING: IP, SUBNET, GATEWAY within VM
    #        end
    #    end
    #end

    # This will give us a nicer object feeling and dynamically
    # exposes variables to the outside.
    #
    # @examples Setting and getting a variable
    # container.config.ipaddress = 1.2.3.4
    #
    #
    #def method_missing(sym, *args)
    #  if sym.to_s =~ /(.+)=$/
    #    self[$1] = args.first
    #  else
    #    self[sym]
    #  end
    #end


    # Execute a System Command
    def execute(cmd)
        Util.execute(cmd)
    end
end

Instance Method Details

#add_veth(veth) ⇒ Object

Add veth to a CT vzctl set <CTID> –netif_add <ifname>

Parameters:

  • interface (Hash) —

    settings (keys as listed above)



312
313
314
315
316
 
# File 'lib/openvz/container.rb', line 312

def add_veth veth
  cmd = "#{@vzctl} set #{@ctid} --netif_add #{veth[:ifname]},#{veth[:mac]},#{veth[:host_ifname]}," \
        "#{veth[:host_mac]}, #{veth[:bridge]}"
  execute(cmd)
end

#checkpoint(snapshot_path) ⇒ Object

Checkpoint the container



98
99
100
101
 
# File 'lib/openvz/container.rb', line 98

def checkpoint(snapshot_path)
    cmd = "#{@vzctl} chkpnt #{@ctid} --dumpfile #{snapshot_path}"
    execute(cmd)
end

#command(command) ⇒ Object

Run a shell command within the container.

Examples:

Update the package sources.

container.command("aptitude update")

Parameters:

  • Command (String) —

    to be executed.



275
276
277
278
279
 
# File 'lib/openvz/container.rb', line 275

def command(command)
    cmd = "#{@vzctl} exec2 #{@ctid} "
    cmd << command
    execute(cmd)
end

#cp_into(options = {}) ⇒ Object

Copy a file from the hardware node into the container. (OBSOLETE)

Examples:

Copy resolv.conf

container.cp_into(
     :src => '/etc/resolv.conf',
     :dst => '/etc/resolv.conf'
)

Parameters:

  • define (Hash) 


263
264
265
266
 
# File 'lib/openvz/container.rb', line 263

def cp_into(options={})
    cmd = "/bin/cp #{options[:src]} #{@config.ve_private}/#{options[:dst]}"
    execute(cmd)
end

#create(options = {}) ⇒ Object

Create a new empty instance from a template.

Examples:

Create a new empty container from a template.

The following example will create a container, from an empty
template, which can be used to bootstrap the whole installation
later on. It will as well apply the vps.unlimited template config.

container.create(:ostemplate => "debian-6.0-bootstrap", :config => "vps.unlimited")

Parameters:

  • options (Hash) (defaults to: {}) —

    you want to pass to the create statement.



149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
 
# File 'lib/openvz/container.rb', line 149

def create(options={})
    unless options[:ostemplate]
        # We need at least a valid ostemplate
        raise ArgumentError, "Create requires argument :ostemplate."
    end

    cmd = "#{@vzctl} create #{@ctid}"

    options.each do |opt,val|
        cmd << " --#{opt}"
        cmd << " #{val}"
    end

    execute(cmd)

    Log.debug("Reading new container configuration file: #{@configfile}")
    @config     = Config.new(load_config_file)
    @config.add_observer(self)
end

#debootstrap(options = {}) ⇒ Object

Bootstrap a Debian container, this requires /usr/sbin/debootstrap to be installed. Executing this function usually takes a while.

Examples:

Debootstrap a container object.

container.debootstrap(:dist => "squeeze", :mirror => "http://cdn.debian.net/debian")

Debootstrap a container, include and exclude certain packages.

container.debootstrap(
    :dist    => "squeeze",
    :mirror  => "http://cdn.debian.net/debian",
    :include => "libreadline6,screen,file,less,dnsutils,tcpdump,vim-nox,puppet,facter",
    :exclude => "dhcp-client,dhcp3-client,dhcp3-common,dmidecode,gcc-4.2-base,module-init-tools,tasksel,tasksel-data,libdb4.4,libsasl2-2,libgnutls26,libconsole,libgnutls13,libtasn1-3,liblzo2-2,libopencdk10,libgcrypt11",
)

Parameters:

  • options (Hash) (defaults to: {}) —

    you want to pass to the bootstrapping tool.



185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
 
# File 'lib/openvz/container.rb', line 185

def debootstrap(options={})
    cmd  = "/usr/sbin/debootstrap"

    options.each do |opt,val|
        unless opt.to_s =~ /dist|dest|mirror/
            cmd << " --#{opt} #{val}"
        end
    end

    cmd << " #{options[:dist]}"
    cmd << " #{@config.ve_private}"
    cmd << " #{options[:mirror]}"

    execute(cmd)

    # FIXME - Remove gettys from inititab automatically. We
    # Need a searchandreplace function first... :-)
    #
    # Util.searchandreplace( "#{@config.ve_private}/etc/inittab",
    #                        "/^(?!#)(.*\/sbin\/getty)/", 
    #                        '#\1')
end

#destroy ⇒ Object

Destroy a container



90
91
92
93
 
# File 'lib/openvz/container.rb', line 90

def destroy
    cmd = "#{@vzctl} destroy #{@ctid}"
    execute(cmd)
end

#execute(cmd) ⇒ Object

Execute a System Command



422
423
424
 
# File 'lib/openvz/container.rb', line 422

def execute(cmd)
    Util.execute(cmd)
end

#file(filename, options = {}) ⇒ Object

Write into or copy a file into a container

The destination file will be prepended with the containers private directory. If you specify a source, this is relative to the virtualization hosts root directory.

Examples:

Create /etc/hostname


container.file('/etc/hostname', :content => 'vm01')

Copy a file from /etc/vz/template.conf/hosts (host) to /etc/hosts (container)


container.file('/etc/hosts', :source => '/etc/hosts'

Parameters:

  • filename —

    Destination filename, relative to the containers root

  • :source —

    The source filename, relative to the virtualization hosts root directory

  • :content —

    Pass a string which will be written to the file.

  • :mode —

    Specify the file mode.



227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
 
# File 'lib/openvz/container.rb', line 227

def file(filename, options={})
    unless filename
        raise ArgumentError, "file requires destination filename as first argument."
    end

    if options[:source] and options[:content]
        raise ArgumentError, "file can either take :source or :content as an argument."
    end

    destination ="#{@config.ve_private}/#{filename}"

    if options[:source]
        FileUtils.cp(options[:source], destination)
    end

    if options[:content]
        File.open(destination, 'w') { |file|
            file.write(options[:content])
        }
    end

    if options[:mode]
        FileUtils.chmod options[:mode], destination
    end
end

#load_config_file ⇒ Object

Load the container configration file.



358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
 
# File 'lib/openvz/container.rb', line 358

def load_config_file
    data = {}
    if File.exists?(@configfile)
        File.open(@configfile, "r").each_line do |line|
            # strip blank spaces, tabs etc. off the lines
            line.gsub!(/\s*$/, "")

            if (line =~ /^([^=]+)="([^=]*)"$/)
                key = $1.downcase
                val = $2

                case key
                    when /^ve_(private|root)$/
                        data[key] = val.gsub!(/\$VEID/, @ctid)
                    else
                        data[key] = val
                end
            end
        end
    end
    data
end

#migrate(destination_address, options = %w(--remove-area yes --online --rsync=-az))) ⇒ Object

Migrate container to another node



113
114
115
116
 
# File 'lib/openvz/container.rb', line 113

def migrate(destination_address, options=%w(--remove-area yes --online --rsync=-az))
    cmd = "#{@vzmigrate} #{options.join ' '} #{destination_address} #{@ctid}"
    execute(cmd)
end

#mount ⇒ Object

Mount a container



74
75
76
77
 
# File 'lib/openvz/container.rb', line 74

def mount
    cmd = "#{@vzctl} mount #{@ctid}"
    execute(cmd)
end

#restart ⇒ Object

Restart a container



66
67
68
69
 
# File 'lib/openvz/container.rb', line 66

def restart
    cmd = "#{@vzctl} restart #{@ctid}"
    execute(cmd)
end

#restore(snapshot_path) ⇒ Object

Restore a checkpoint



106
107
108
109
 
# File 'lib/openvz/container.rb', line 106

def restore(snapshot_path)
    cmd = "#{@vzctl} restore #{@ctid} --dumpfile #{snapshot_path}"
    execute(cmd)
end

#set(options = {}) ⇒ Object

Update one or multiple Container properties and keep the configration object up to date

Parameters:

  • The (Hash) —

    options to update, eg. ‘{ :privvmpages => ’123:123’ }‘



123
124
125
126
127
128
129
130
131
132
133
134
135
136
 
# File 'lib/openvz/container.rb', line 123

def set(options = {})
    # Construct a set command
    cmd = "#{@vzctl} set #{@ctid} --save"
    
    options.each do |opt,val|
        cmd << " --#{opt}"
        cmd << " #{val}"
    end

    execute(cmd)

    # Each time we update a setting, reload the configuration.
    @config.load(@ctid)
end

#start ⇒ Object

Start a container



50
51
52
53
 
# File 'lib/openvz/container.rb', line 50

def start
    cmd = "#{@vzctl} start #{@ctid}"
    execute(cmd)
end

#state(mode, action) ⇒ Object

Check whether current_state == :require||:validate

Raises:

  • (StateMachineError) 


337
338
339
340
341
342
343
344
345
346
 
# File 'lib/openvz/container.rb', line 337

def state(mode, action)
    current_state = self.status()

    if current_state & @statemachine_options[action.to_sym][mode.to_sym]
        return true
    end

    raise StateMachineError,
       "Required container status not met. req: #{@state_control[:action]}, cur: #{state}"
end

#state_require(*opts) ⇒ Object 



324
325
326
327
328
329
330
331
332
 
# File 'lib/openvz/container.rb', line 324

def state_require(*opts)
    current_state = status
    if current_state & opts
        puts "req: #{opts.join("-")}, cur: #{current_state.join("-")}"
        return true
    else
      raise StateMachineError, "Required container status not met for this action. req: #{opts.join("-")}, cur: #{current_state.join("-")}"
    end
end

#status ⇒ Object

Return the current machine status string.

Examples:

puts container.status()
exist mounted running


287
288
289
290
291
292
 
# File 'lib/openvz/container.rb', line 287

def status
    cmd = "#{@vzctl} status #{@ctid}"
    status = execute(cmd).split(/\s/)
    Log.debug("Container (#{@ctid}) status requested: #{status}")
    status.drop(2)
end

#stop ⇒ Object

Stop a container



58
59
60
61
 
# File 'lib/openvz/container.rb', line 58

def stop
    cmd = "#{@vzctl} stop #{@ctid}"
    execute(cmd)
end

#umount ⇒ Object

Umount a container



82
83
84
85
 
# File 'lib/openvz/container.rb', line 82

def umount
    cmd = "#{@vzctl} umount #{@ctid}"
    execute(cmd)
end

#update(key, value) ⇒ Object

Notify Method! :-) Config objects will notify, as soon as they are changed.



351
352
353
 
# File 'lib/openvz/container.rb', line 351

def update(key, value)
    set(key.to_sym => value)
end

#uptime ⇒ Object

Return the current uptime in seconds. Return zero if the container is not running.

Examples:

puts container.uptime()
1188829


301
302
303
304
305
306
 
# File 'lib/openvz/container.rb', line 301

def uptime
  return 0 unless status.include? "running"
  raw = command "cat /proc/uptime"
  Log.debug("Container (#{@ctid}) uptime requested: #{raw}")
  raw.split(/\W/).first.to_i
end