Wiki source code of Volume Mapping (On-premise)

Version 47.1 by Erik Bakker on 2022/10/31 15:15

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Erik Bakker 21.1 1 {{container}}{{container layoutStyle="columns"}}(((
Erik Bakker 40.1 2
Erik Bakker 38.1 3 When you need to read and write files from an on-premise disk, you need to know the path in which the data is stored and make sure that the docker container in your runtime(s) running has access to this path. There are several ways of dealing with this challenge. First, this microlearning will discuss the various alternatives and best approaches in these scenarios.
eMagiz 1.1 4
Erik Bakker 21.1 5 Should you have any questions, please contact [[academy@emagiz.com>>mailto:academy@emagiz.com]].
eMagiz 1.1 6
7 == 1. Prerequisites ==
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9 * Basic knowledge of the eMagiz platform
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11 == 2. Key concepts ==
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Erik Bakker 38.1 13 This microlearning centers around learning how to set up your volume mapping correctly so you can exchange file-based data on-premise.
eMagiz 1.1 14
Erik Bakker 38.1 15 By volume mapping, we mean: Creating a configuration through which the docker container can read and write data on a specific path on an on-premise machine.
eMagiz 1.1 16
Erik Bakker 38.1 17 There are several options for volume mapping for your on-premise machine.
18 * Volume
19 * Bind mount
20 * Temporary file system
21 * Named pipe
eMagiz 1.1 22
Erik Bakker 38.1 23 == 3. Volume Mapping (On-premise) ==
eMagiz 1.1 24
Erik Bakker 38.1 25 When you need to read and write files from an on-premise disk, you need to know the path in which the data is stored and make sure that the docker container in your runtime(s) running has access to this path. There are several ways of dealing with this challenge. First, this microlearning will discuss the various alternatives and best approaches in these scenarios.
eMagiz 1.1 26
Erik Bakker 38.1 27 There are several options for volume mapping for your on-premise machine.
28 * Volume
29 * Bind mount
30 * Temporary file system
31 * Named pipe
eMagiz 1.1 32
Erik Bakker 38.1 33 Below we will explain the differences between the various options available for your volume mapping. But before we do, we first explain how to set up this configuration within eMagiz. Then, you must navigate to Deploy -> Architecture on the model level. In this overview, you can access the Volume mapping per runtime deployed on-premise. To do so, you can right-click on the runtime to access the context menu.
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35 [[image:Main.Images.Microlearning.WebHome@novice-file-based-connectivity-volume-mapping-on-premise--volume-option-context-menu.png]]
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37 When you click this option, you will see the following pop-up. In this pop-up, you can define the machine-level and runtime-level volumes. More on that later. This is the starting point for configuring your volume mapping. We will walk through each available option and explain how they work and should be configured.
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39 [[image:Main.Images.Microlearning.WebHome@novice-file-based-connectivity-volume-mapping-on-premise--volume-mapping-pop-up.png]]
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Erik Bakker 41.1 41 {{info}}Note that you should be in "Start editing" mode to make any changes to the configuration of your volume mapping.{{/info}}
Erik Bakker 38.1 42
43 === 3.1 Volume ===
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Erik Bakker 44.1 45 The first type available to you is Volume. With this option you create one or more folders on docker that is relevant for that runtime to read and/or write **persistent** data. To configure this type you need to link the runtime volume to a machine volume that you can create within the same pop-up. This means that you can re-use a "Machine volume" over multiple runtimes (i.e. containers).
Erik Bakker 43.1 46
47 So, at first we open the tab called "Machine volume". By pressing the "New" button we can define a new "Machine volume". In the pop-up that follows we can define the name of a machine volume and tell whether the volume already exists on your docker installation or not.
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49 [[image:Main.Images.Microlearning.WebHome@novice-file-based-connectivity-volume-mapping-on-premise--machine-volumes-configuration.png]]
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51 Once you have done so we press "Save" and switch back to the "Runtime volumes" tab. In here we press the "New" button to create a new "Runtime volume". In the pop-up that follows we first need to select the Type we want to use. For this example we use the type called "Volume". Based on your selection the relevant input fields will change.
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53 [[image:Main.Images.Microlearning.WebHome@novice-file-based-connectivity-volume-mapping-on-premise--runtime-volumes-configuration-type-volume.png]]
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55 The first thing we need to select is the "Machine volume". Once we have selected our "Machine volume" we need to select the Target that is specific for this runtime. This target defines the second part of the path to which the runtime will gain access. For example, when you fill in "/target" we can combine this with the "Machine volume" name to arrive at the correct directory from which eMagiz needs to read data (or write data to). So in our case this would be "/file-directory/target."
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57 The last setting we need to configure is to define which rights we will grant our runtime on the volume we are creating. The default setting is read/write rights for the runtime which is sufficient in most cases. The result of following these steps will be the following.
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59 [[image:Main.Images.Microlearning.WebHome@novice-file-based-connectivity-volume-mapping-on-premise--runtime-volumes-configuration-type-volume-filled-in.png]]
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61 {{warning}}Note, that when you use the Volume option the external system with which you exchange data on-premise via a file based method need to be able to write or read the data from the volume (i.e. directory) you have configured in Docker. Should this be a problem the Bind mount alternative discussed below should be considered.{{/warning}}
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Erik Bakker 42.1 63 === 3.2 Bind mount ===
eMagiz 1.1 64
Erik Bakker 44.1 65 An alternative option to read and write **persistent** data is to use the "Bind mount" option avaiable. In general we advice to use the "Volume" option because they have better performance and bind mounts are dependent on the directory structure and OS of the host machine. Having said that not all external systems can adapt to this that easily. That is why the "Bind mount" option can be of interest in your use case.
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Erik Bakker 46.1 67 [[image:Main.Images.Microlearning.WebHome@novice-file-based-connectivity-volume-mapping-on-premise--runtime-volumes-configuration-type-bind-mount.png]]
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Erik Bakker 44.1 69 To configure a "Bind mount" you need to define a source and a target directory that are linked to each other. The source directory defines the directory on your local system (that might already be in use currently to exchange files). The target directory defines a directory on your docker installation that can be accessed by the runtime.
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Erik Bakker 46.1 71 {{warning}}Note, that when the source directory does not exists the runtimes cannot be deployed correctly.{{/warning}}
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73 [[image:Main.Images.Microlearning.WebHome@novice-file-based-connectivity-volume-mapping-on-premise--runtime-volumes-configuration-type-bind-mount-filled-in.png]]
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75 {{info}}Note, that when you use this option your directory reference in your flow should refer to the "target" directory configured here.{{/info}}
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Erik Bakker 42.1 77 === 3.3 Temporary file system ===
eMagiz 1.1 78
Erik Bakker 47.1 79 If you do not want to work with **persistent** data but have a need for **non-persistent** data the temporary file system option is for you. This way you can increase the container’s performance by avoiding writing into the container’s writable layer.
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81 [[image:Main.Images.Microlearning.WebHome@novice-file-based-connectivity-volume-mapping-on-premise--runtime-volumes-configuration-type-temp-file-storage.png]]
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83 To configure this option you need a target location. On top of that you can define the maximum size of the temporary file system.
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85 [[image:Main.Images.Microlearning.WebHome@novice-file-based-connectivity-volume-mapping-on-premise--runtime-volumes-configuration-type-temp-file-storage-filled-in.png]]
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87 {{warning}}We strongly advice to define this number as that way you can limit the potential impact this solution can have on the stability of your machine.{{/warning}}
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Erik Bakker 42.1 89 === 3.4 Named pipe ===
eMagiz 1.1 90
Erik Bakker 45.1 91 The named pipe option can be selected but we yet have to see a valid use case within the context of eMagiz for using this option. Therefore we won't discuss this option further in this microlearning.
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eMagiz 1.1 93 == 4. Assignment ==
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Erik Bakker 33.1 95 Configure an entry in which you build the archiving and the clean up of the archiving.
eMagiz 1.1 96 This assignment can be completed with the help of the (Academy) project that you have created/used in the previous assignment.
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98 == 5. Key takeaways ==
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Erik Bakker 33.1 100 * Archiving is used for audit purposes
101 * Archiving is used for retry scenarios
102 * Ensure that data is cleaned after a retention period to keep in control of the data
103 * Don't forget the max messages per poll
eMagiz 1.1 104
105 == 6. Suggested Additional Readings ==
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Erik Bakker 33.1 107 If you are interested in this topic and want more information on it please read the help text provided by eMagiz and check out the following store content:
eMagiz 1.1 108
Erik Bakker 36.1 109 * [[File Archiving>>doc:Main.eMagiz Store.Accelerators.File Archiving.WebHome||target="blank"]]
110 * [[Delete Folder(s)>>doc:Main.eMagiz Store.Accelerators.Delete Folder(s).WebHome||target="blank"]]
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eMagiz 1.1 112 == 7. Silent demonstration video ==
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114 This video demonstrates how you could have handled the assignment and gives you some context on what you have just learned.
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Erik Bakker 32.1 116 {{video attachment="novice-file-based-connectivity-characterset.mp4" reference="Main.Videos.Microlearning.WebHome"/}}
eMagiz 1.1 117
Erik Bakker 21.1 118 )))((({{toc/}}))){{/container}}{{/container}}