【独家发布】Apache Mesos Cookbook

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1. Apache Mesos Cookbook
   
2. By 作者: David Blomquist – Tomasz Janiszewski
   
3. 
   
4. ISBN-10 书号: 178588462X
   
5. 
   
6. ISBN-13 书号: 9781785884627
   
7. 
   
8. Release 出版日期: 2017-08-04
   
9. 
   
10. pages 页数: (247)
    
11. 
    
12. List Price: $34.99

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关键词：Cookbook apache mesos Book Cook

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【独家发布】Apache Mesos Cookbook
1 个回复 - 141 次查看**** 本内容被作者隐藏 ****2017-8-13 01:20 - Reader's - winbugs专版
Apache Mesos Essentials
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Mesos in Action
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Building Applications on Mesos
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Big Data SMACK: A Guide to Apache Spark, Mesos, Akka, Cassandra, and Kafka
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[Lecture Notes]Datacenter Management with Apache Mesos
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1. How to do it...
   
2. When Mesos is installed from pre-built packages, the logs are by default
   
3. stored in /var/log/mesos/. When installing from a source build, storing logs is
   
4. disabled by default. To change the log store location, we need to edit
   
5. /etc/default/mesos and set the LOGS variable to the desired destination. For
   
6. some reason, mesos-init-wrapper does not transfer the contents of
   
7. /etc/mesos/log_dir to the --log_dir flag. That's why we need to set the log's
   
8. destination in the environment variable.
   
9. Remember that only Mesos logs will be stored there. Logs from third-party
   
10. applications (for example, ZooKeeper) will still be sent to STDERR.
    
11. Changing the default logging level can be done in one of two ways: by
    
12. specifying the --logging_level flag or by sending a request and changing the
    
13. logging level at runtime for a specific period of time.
    
14. For example, to change the logging level to INFO, just put it in the following
    
15. code:
    
16. /etc/mesos/logging_level
    
17. echo INFO > /etc/mesos/logging_level
    
18. The possible levels are INFO, WARNING, and ERROR.
    
19. For example, to change the logging level to the most verbose for 15 minutes
    
20. for debug purposes, we need to send the following request to the
    
21. logging/toggle endpoint:
    
22. curl -v -X POST localhost:5050/logging/toggle?level=3\&duration=15mins

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1. How to do it...
   
2. Monitoring is enabled by default. Mesos does not provide any way to
   
3. automatically push metrics to the registry. However, it exposes them as a
   
4. JSON that can be periodically pulled and saved into the metrics registry:
   
5. 1. Install Diamond using following command:
   
6. pip install diamond
   
7. 2. If additional packages are required to install them, run:
   
8. sudo apt-get install python-pip python-dev build-essential.
   
9. pip (Pip Installs Packages) is a Python package manager
   
10. used to install software written in Python.
    
11. 3. Configure the metrics handler and interval. Open
    
12. /etc/diamond/diamond.conf and ensure that there is a section for graphite
    
13. configuration:
    
14. [handler_graphite]
    
15. class = handlers.GraphiteHandler
    
16. host = <graphite.host>
    
17. port = <graphite.port>
    
18. Remember to replace graphite.host and graphite.port with
    
19. real graphite details.
    
20. 4. Enable the default Mesos Collector. Create configuration files diamondsetup
    
21. -C MesosCollector. Check whether the configuration has proper
    
22. values and edit them if needed. The configuration can be found in
    
23. /etc/diamond/collectors/MesosCollector.conf. On master, this file should
    
24. look like this:
    
25. enabled = True
    
26. host = localhost
    
27. port = 5050
    
28. Download from finelybook www.finelybook.com
    
29. 112

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1. How to do it...
   
2. Let's assume our cluster contains agents with SSD and HDD drives. Disk
   
3. resources will unify SSD and HDD, but from the user's perspective they are
   
4. different and some tasks need to be run on SSD. We can label agents with the
   
5. disk attributes hdd or ssd, depending on the disk type, hence allowing the user
   
6. to decide which disk should be used for the job.
   
7. To create an attribute, we need to place the file in /etc/mesos-slave/attributes.
   
8. The following command will create this directory:
   
9. mkdir -p /etc/mesos-slave/attributes
   
10. The filename will be the attribute label and the content will be a value. To
    
11. create the disk:ssd attribute, simply create a file with the following contents:
    
12. echossd> /etc/mesos-slave/attributes/disk

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1. How to do it...
   
2. Roles are part of the resources definition. We define resources and roles for
   
3. each agent. For example, we want to change the default port range to 51000-
   
4. 52000 and the offered disk space to 4096 GB. To do this, we need to explicitly
   
5. override the default values. You need to edit /etc/mesos-slave/resources and
   
6. put the desired resources:
   
7. echo 'disk(*):4096; ports(*):[51000-52000]'> /etc/mesos-slave/resources
   
8. In a similar way, we can define other resources such as CPUs, memory, or
   
9. GPUs just by adding the corresponding entry. The preceding configuration
   
10. defines the default roles - (*).
    
11. To assign the resource to a specific role, put the role name after the resource
    
12. in brackets. For example, we want to run role development and test on one
    
13. cluster. We want to distinguish ports offered to these roles. The development
    
14. tasks will be run on ports 31000-32000 and be tested on 41000-42000. To do it, we
    
15. define the following resources:
    
16. echo 'ports(develop):[31000-32000]; ports(test):[41000-42000]'> /etc/mesos-slave/resources
    
17. With multiple frameworks deployed on Mesos, there is a chance that some of
    
18. them are more important than others and should receive resource offers more
    
19. often. We can achieve this with weighted roles.
    
20. Weights are configured with roles and mean what fraction of offers should be
    
21. presented to frameworks with the given role. Offers will be presented
    
22. proportionally more often to frameworks with higher weights. By default,
    
23. each role has a weight of 1 but this could be changed using the Weights
    
24. operator API.

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