Ufdjrw

How can I reduce the gap between left and right of cdot with a macro?

Should I use a zero-interest credit card for a large one-time purchase?

How much damage would a cupful of neutron star matter do to the Earth?

Is there a kind of relay only consumes power when switching?

Sum letters are not two different

An adverb for when you're not exaggerating

AppleTVs create a chatty alternate WiFi network

What is "gratricide"?

What is the appropriate index architecture when forced to implement IsDeleted (soft deletes)?

How do I find out the mythology and history of my Fortress?

How do living politicians protect their readily obtainable signatures from misuse?

Why wasn't DOSKEY integrated with COMMAND.COM?

How to react to hostile behavior from a senior developer?

Why is my ESD wriststrap failing with nitrile gloves on?

Is a ledger board required if the side of my house is wood?

Find 108 by using 3,4,6

How to install press fit bottom bracket into new frame

Significance of Cersei's obsession with elephants?

Maximum summed subsequences with non-adjacent items

If Windows 7 doesn't support WSL, then what does Linux subsystem option mean?

Question about debouncing - delay of state change

Generate an RGB colour grid

Is there any word for a place full of confusion?

Central Vacuuming: Is it worth it, and how does it compare to normal vacuuming?

How to mount multiple NFS mounts that point to the same place in a Docker image using docker-compose

.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty height:90px;width:728px;box-sizing:border-box;

0

Different than this one here.

I want to link multiple NFS mounts that point to the same local location in a docker-compose image. I put the following lines in a docker-compose file:

volumes:
 nfs3:
 driver: local
 driver_opts:
 type: nfs
 o: addr=172.16.20.5,rw
 device: ":/tmp/mount1"
 nfs4:
 driver: local
 driver_opts:
 type: nfs
 o: addr=172.16.20.6,rw
 device: ":/tmp/mount2"

And then in the services part, I have a postgres instance that has the following volume config:

volumes:
 - nfs3:/bitnami
 - nfs4:/bitnami

Unfortunately, when I write to /bitnami, it only writes to /tmp/mount2 and not /tmp/mount1. Is there a good way to be able to write to both NFS mounts?

docker docker-compose nfs

share|improve this question

asked Mar 8 at 20:25

AndreasKraljAndreasKralj

326112

add a comment | 

0

Different than this one here.

I want to link multiple NFS mounts that point to the same local location in a docker-compose image. I put the following lines in a docker-compose file:

volumes:
 nfs3:
 driver: local
 driver_opts:
 type: nfs
 o: addr=172.16.20.5,rw
 device: ":/tmp/mount1"
 nfs4:
 driver: local
 driver_opts:
 type: nfs
 o: addr=172.16.20.6,rw
 device: ":/tmp/mount2"

And then in the services part, I have a postgres instance that has the following volume config:

volumes:
 - nfs3:/bitnami
 - nfs4:/bitnami

Unfortunately, when I write to /bitnami, it only writes to /tmp/mount2 and not /tmp/mount1. Is there a good way to be able to write to both NFS mounts?

docker docker-compose nfs

share|improve this question

asked Mar 8 at 20:25

AndreasKraljAndreasKralj

326112

add a comment | 

Different than this one here.

I want to link multiple NFS mounts that point to the same local location in a docker-compose image. I put the following lines in a docker-compose file:

volumes:
 nfs3:
 driver: local
 driver_opts:
 type: nfs
 o: addr=172.16.20.5,rw
 device: ":/tmp/mount1"
 nfs4:
 driver: local
 driver_opts:
 type: nfs
 o: addr=172.16.20.6,rw
 device: ":/tmp/mount2"

And then in the services part, I have a postgres instance that has the following volume config:

volumes:
 - nfs3:/bitnami
 - nfs4:/bitnami

Unfortunately, when I write to /bitnami, it only writes to /tmp/mount2 and not /tmp/mount1. Is there a good way to be able to write to both NFS mounts?

docker docker-compose nfs

share|improve this question

asked Mar 8 at 20:25

AndreasKraljAndreasKralj

326112

volumes:
 nfs3:
 driver: local
 driver_opts:
 type: nfs
 o: addr=172.16.20.5,rw
 device: ":/tmp/mount1"
 nfs4:
 driver: local
 driver_opts:
 type: nfs
 o: addr=172.16.20.6,rw
 device: ":/tmp/mount2"

volumes:
 - nfs3:/bitnami
 - nfs4:/bitnami

share|improve this question

asked Mar 8 at 20:25

AndreasKraljAndreasKralj

326112

share|improve this question

asked Mar 8 at 20:25

AndreasKraljAndreasKralj

326112

asked Mar 8 at 20:25

AndreasKraljAndreasKralj

326112

asked Mar 8 at 20:25

AndreasKraljAndreasKralj

326112

1 Answer
1

active

oldest

votes

1

The docker volume system uses the linux mount interface. Only one thing can be mounted at a time for a particular location. The most recent mount is the mount that is accessible.

This question discusses what happens to files that were in a particular location when a mount happens.

In your example, if files are only showing up on your /tmp/mount2 nfs share, then that was the most recent filesystem to be mounted at /bitnami.

Similarly, if I try to mount two USB drives at the same location on a linux host, only the most recently mounted one will be the one available at that location.

share|improve this answer

answered Mar 8 at 20:33

programmerqprogrammerq

3,606928

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Gotcha, thanks for the answer! Do you recommend an alternate method of storing data from one Docker container to multiple devices at the same time?
  
  – AndreasKralj
  Mar 8 at 20:40
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  I don't see this as a docker specific question. Docker is just a thing that starts processes and sets up mounts for you, so you could restate your question as follows: How would one store data written by my process/application in more than one location?" There are lots of answers-- unison, rsync, change your application to write in two places, etc...
  
  – programmerq
  Mar 8 at 20:42
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thanks. I'll look into those. The specific application I'm using is postgresql so I'll try and find a way to do that with postgresql.
  
  – AndreasKralj
  Mar 8 at 20:43
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Postgres does have replication features built in, but that usually means that you will be running different instances of postgres. What is your motivation to have one postgres with data in multiple places? It isn't really a common postgres question.
  
  – programmerq
  Mar 8 at 20:45
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  The main motivation is so that if one NFS server goes down, we have another that the postgresql container will write to as permanent storage. The reason to have the external storage on NFS servers is so that if the server hosting the Docker container goes down, we'll still have the posgresql data. If there's a better way, please let me know.
  
  – AndreasKralj
  Mar 8 at 20:50
  
  

  
  
  
  

add a comment | 

Your Answer

StackExchange.ifUsing("editor", function ()
StackExchange.using("externalEditor", function ()
StackExchange.using("snippets", function ()
StackExchange.snippets.init();
);
);
, "code-snippets");

StackExchange.ready(function()
var channelOptions =
tags: "".split(" "),
id: "1"
;
initTagRenderer("".split(" "), "".split(" "), channelOptions);

StackExchange.using("externalEditor", function()
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled)
StackExchange.using("snippets", function()
createEditor();
);

else
createEditor();

);

function createEditor()
StackExchange.prepareEditor(
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader:
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
,
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
);



);

draft saved

draft discarded

Sign up or log in

StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);

Sign up using Google

Sign up using Facebook

Sign up using Email and Password

Post as a guest

Name

Email

Required, but never shown

StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f55070520%2fhow-to-mount-multiple-nfs-mounts-that-point-to-the-same-place-in-a-docker-image%23new-answer', 'question_page');

);

Post as a guest

Name

Email

Required, but never shown

1

The docker volume system uses the linux mount interface. Only one thing can be mounted at a time for a particular location. The most recent mount is the mount that is accessible.

This question discusses what happens to files that were in a particular location when a mount happens.

In your example, if files are only showing up on your /tmp/mount2 nfs share, then that was the most recent filesystem to be mounted at /bitnami.

Similarly, if I try to mount two USB drives at the same location on a linux host, only the most recently mounted one will be the one available at that location.

share|improve this answer

answered Mar 8 at 20:33

programmerqprogrammerq

3,606928

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Gotcha, thanks for the answer! Do you recommend an alternate method of storing data from one Docker container to multiple devices at the same time?
  
  – AndreasKralj
  Mar 8 at 20:40
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  I don't see this as a docker specific question. Docker is just a thing that starts processes and sets up mounts for you, so you could restate your question as follows: How would one store data written by my process/application in more than one location?" There are lots of answers-- unison, rsync, change your application to write in two places, etc...
  
  – programmerq
  Mar 8 at 20:42
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thanks. I'll look into those. The specific application I'm using is postgresql so I'll try and find a way to do that with postgresql.
  
  – AndreasKralj
  Mar 8 at 20:43
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Postgres does have replication features built in, but that usually means that you will be running different instances of postgres. What is your motivation to have one postgres with data in multiple places? It isn't really a common postgres question.
  
  – programmerq
  Mar 8 at 20:45
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  The main motivation is so that if one NFS server goes down, we have another that the postgresql container will write to as permanent storage. The reason to have the external storage on NFS servers is so that if the server hosting the Docker container goes down, we'll still have the posgresql data. If there's a better way, please let me know.
  
  – AndreasKralj
  Mar 8 at 20:50
  
  

  
  
  
  

add a comment | 

1

The docker volume system uses the linux mount interface. Only one thing can be mounted at a time for a particular location. The most recent mount is the mount that is accessible.

This question discusses what happens to files that were in a particular location when a mount happens.

In your example, if files are only showing up on your /tmp/mount2 nfs share, then that was the most recent filesystem to be mounted at /bitnami.

Similarly, if I try to mount two USB drives at the same location on a linux host, only the most recently mounted one will be the one available at that location.

share|improve this answer

answered Mar 8 at 20:33

programmerqprogrammerq

3,606928

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Gotcha, thanks for the answer! Do you recommend an alternate method of storing data from one Docker container to multiple devices at the same time?
  
  – AndreasKralj
  Mar 8 at 20:40
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  I don't see this as a docker specific question. Docker is just a thing that starts processes and sets up mounts for you, so you could restate your question as follows: How would one store data written by my process/application in more than one location?" There are lots of answers-- unison, rsync, change your application to write in two places, etc...
  
  – programmerq
  Mar 8 at 20:42
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thanks. I'll look into those. The specific application I'm using is postgresql so I'll try and find a way to do that with postgresql.
  
  – AndreasKralj
  Mar 8 at 20:43
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Postgres does have replication features built in, but that usually means that you will be running different instances of postgres. What is your motivation to have one postgres with data in multiple places? It isn't really a common postgres question.
  
  – programmerq
  Mar 8 at 20:45
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  The main motivation is so that if one NFS server goes down, we have another that the postgresql container will write to as permanent storage. The reason to have the external storage on NFS servers is so that if the server hosting the Docker container goes down, we'll still have the posgresql data. If there's a better way, please let me know.
  
  – AndreasKralj
  Mar 8 at 20:50
  
  

  
  
  
  

add a comment | 

The docker volume system uses the linux mount interface. Only one thing can be mounted at a time for a particular location. The most recent mount is the mount that is accessible.

This question discusses what happens to files that were in a particular location when a mount happens.

In your example, if files are only showing up on your /tmp/mount2 nfs share, then that was the most recent filesystem to be mounted at /bitnami.

Similarly, if I try to mount two USB drives at the same location on a linux host, only the most recently mounted one will be the one available at that location.

share|improve this answer

answered Mar 8 at 20:33

programmerqprogrammerq

3,606928

share|improve this answer

answered Mar 8 at 20:33

programmerqprogrammerq

3,606928

answered Mar 8 at 20:33

programmerqprogrammerq

3,606928

answered Mar 8 at 20:33

programmerqprogrammerq

3,606928