Recommendations for editing same file on different machines

Our Rails app is scaled at multiple machines, from time to time, we need to change settings at production.yml , right now we have to ssh into each server and do the editing at each machine individually.

What's the right way to handle this case?

asked Jan 29 at 14:05

simo

1033

add a comment |

What's the right way to handle this case?

asked Jan 29 at 14:05

simo

1033

add a comment |

What's the right way to handle this case?

asked Jan 29 at 14:05

simo

1033

What's the right way to handle this case?

synchronization settings deployment yaml

asked Jan 29 at 14:05

simo

1033

asked Jan 29 at 14:05

simo

1033

asked Jan 29 at 14:05

simo

1033

asked Jan 29 at 14:05

simo

1033

asked Jan 29 at 14:05

simo

1033

add a comment |

2 Answers
2

active

oldest

votes

Configuration management systems like Puppet and Chef are made for this exact purpose.

If you don't want to use them, you can use a script to SCP the file to the server:

while read host; do

    scp -i yourKey production.yml user@$host:/destination/production.yml

    # Add an ssh command here if you need to restart any services

done <  hosts.txt;

edited Jan 29 at 16:27

terdon♦

130k32255433

answered Jan 29 at 14:07

Farhan.K

1243

currently we are not using those tools, wouldn't this approach involve full deployment cycle ? we only need this particular sync

– simo
Jan 29 at 14:12

Not necessarily, there's nothing wrong with using them to deploy files outside of the development cycle. Although they might be overkill for something small like this. I've edited my answer

– Farhan.K
Jan 29 at 14:21

thanks allot, that's what I needed

– simo
Jan 29 at 14:26

1

I would consider using one of these tools if I were you. It makes it much easier to manage multiple machines.

– Farhan.K
Jan 29 at 14:27

If there are any chances that those files will be changed by someone else after you modify them , thus causing a configuration drift , I would suggest going with @Farhan.K's suggestion as Puppet and Chef will check periodically if there has been any change to the file and if so , change it to what you define . If not , Puppet and Chef could have an overhead since they are agent based , and in this case I would strongly recommend using Ansible which is agentless and uses SSH to connect to managed hosts. You could manage one file and push it to managed hosts. good luck

– John Doe
Jan 29 at 16:20

|
show 6 more comments

Better to use rsync instead of scp. Advantages of rsync :

First, it will check whether any changes are there or not in source file when compared with file in destination. Only if there is a change then it will transfer so it will take less time and be faster when compared with scp.

while read host

do

    rsync -avzh production.yml userid@$host:/destination_location/production.yml

done < hosts.txt

edited Jan 29 at 16:26

terdon♦

130k32255433

answered Jan 29 at 15:41

Praveen Kumar BS

1,464138

using while read; do ... done < hosts.txt is horrible -- same comment as here. Also @terdon.

– pizdelect
Feb 1 at 9:21

@pizdelect no, it isn't. It is the best and safest way to read lines from a file. The absolute safest is while IFS= read -r var; do..., but this is not needed here. IN any case, using a while read loop instead of something truly awful such as for line in $(cat file) is both standard and the best practice recommended pretty much everywhere. Also see 1, 2, 3, 4, 5.

– terdon♦
Feb 1 at 9:42

add a comment |

Your Answer

StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "106"
};
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: false,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
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');
});

Post as a guest

Name

Required, but never shown

StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f497459%2frecommendations-for-editing-same-file-on-different-machines%23new-answer', 'question_page');
}
);

Post as a guest

Name

Required, but never shown

2 Answers
2

active

oldest

votes

2 Answers
2

active

oldest

votes

Configuration management systems like Puppet and Chef are made for this exact purpose.

If you don't want to use them, you can use a script to SCP the file to the server:

while read host; do

    scp -i yourKey production.yml user@$host:/destination/production.yml

    # Add an ssh command here if you need to restart any services

done <  hosts.txt;

edited Jan 29 at 16:27

terdon♦

130k32255433

answered Jan 29 at 14:07

Farhan.K

1243

currently we are not using those tools, wouldn't this approach involve full deployment cycle ? we only need this particular sync

– simo
Jan 29 at 14:12

Not necessarily, there's nothing wrong with using them to deploy files outside of the development cycle. Although they might be overkill for something small like this. I've edited my answer

– Farhan.K
Jan 29 at 14:21

thanks allot, that's what I needed

– simo
Jan 29 at 14:26

1

I would consider using one of these tools if I were you. It makes it much easier to manage multiple machines.

– Farhan.K
Jan 29 at 14:27

If there are any chances that those files will be changed by someone else after you modify them , thus causing a configuration drift , I would suggest going with @Farhan.K's suggestion as Puppet and Chef will check periodically if there has been any change to the file and if so , change it to what you define . If not , Puppet and Chef could have an overhead since they are agent based , and in this case I would strongly recommend using Ansible which is agentless and uses SSH to connect to managed hosts. You could manage one file and push it to managed hosts. good luck

– John Doe
Jan 29 at 16:20

|
show 6 more comments

Configuration management systems like Puppet and Chef are made for this exact purpose.

If you don't want to use them, you can use a script to SCP the file to the server:

while read host; do

    scp -i yourKey production.yml user@$host:/destination/production.yml

    # Add an ssh command here if you need to restart any services

done <  hosts.txt;

edited Jan 29 at 16:27

terdon♦

130k32255433

answered Jan 29 at 14:07

Farhan.K

1243

currently we are not using those tools, wouldn't this approach involve full deployment cycle ? we only need this particular sync

– simo
Jan 29 at 14:12

Not necessarily, there's nothing wrong with using them to deploy files outside of the development cycle. Although they might be overkill for something small like this. I've edited my answer

– Farhan.K
Jan 29 at 14:21

thanks allot, that's what I needed

– simo
Jan 29 at 14:26

1

I would consider using one of these tools if I were you. It makes it much easier to manage multiple machines.

– Farhan.K
Jan 29 at 14:27

If there are any chances that those files will be changed by someone else after you modify them , thus causing a configuration drift , I would suggest going with @Farhan.K's suggestion as Puppet and Chef will check periodically if there has been any change to the file and if so , change it to what you define . If not , Puppet and Chef could have an overhead since they are agent based , and in this case I would strongly recommend using Ansible which is agentless and uses SSH to connect to managed hosts. You could manage one file and push it to managed hosts. good luck

– John Doe
Jan 29 at 16:20

|
show 6 more comments

Configuration management systems like Puppet and Chef are made for this exact purpose.

If you don't want to use them, you can use a script to SCP the file to the server:

while read host; do

    scp -i yourKey production.yml user@$host:/destination/production.yml

    # Add an ssh command here if you need to restart any services

done <  hosts.txt;

edited Jan 29 at 16:27

terdon♦

130k32255433

answered Jan 29 at 14:07

Farhan.K

1243

Configuration management systems like Puppet and Chef are made for this exact purpose.

If you don't want to use them, you can use a script to SCP the file to the server:

while read host; do

    scp -i yourKey production.yml user@$host:/destination/production.yml

    # Add an ssh command here if you need to restart any services

done <  hosts.txt;

edited Jan 29 at 16:27

terdon♦

130k32255433

answered Jan 29 at 14:07

Farhan.K

1243

edited Jan 29 at 16:27

terdon♦

130k32255433

edited Jan 29 at 16:27

terdon♦

130k32255433

edited Jan 29 at 16:27

terdon♦

130k32255433

answered Jan 29 at 14:07

Farhan.K

1243

answered Jan 29 at 14:07

Farhan.K

1243

answered Jan 29 at 14:07

Farhan.K

1243

currently we are not using those tools, wouldn't this approach involve full deployment cycle ? we only need this particular sync

– simo
Jan 29 at 14:12

Not necessarily, there's nothing wrong with using them to deploy files outside of the development cycle. Although they might be overkill for something small like this. I've edited my answer

– Farhan.K
Jan 29 at 14:21

thanks allot, that's what I needed

– simo
Jan 29 at 14:26

1

I would consider using one of these tools if I were you. It makes it much easier to manage multiple machines.

– Farhan.K
Jan 29 at 14:27

If there are any chances that those files will be changed by someone else after you modify them , thus causing a configuration drift , I would suggest going with @Farhan.K's suggestion as Puppet and Chef will check periodically if there has been any change to the file and if so , change it to what you define . If not , Puppet and Chef could have an overhead since they are agent based , and in this case I would strongly recommend using Ansible which is agentless and uses SSH to connect to managed hosts. You could manage one file and push it to managed hosts. good luck

– John Doe
Jan 29 at 16:20

|
show 6 more comments

currently we are not using those tools, wouldn't this approach involve full deployment cycle ? we only need this particular sync

– simo
Jan 29 at 14:12

Not necessarily, there's nothing wrong with using them to deploy files outside of the development cycle. Although they might be overkill for something small like this. I've edited my answer

– Farhan.K
Jan 29 at 14:21

thanks allot, that's what I needed

– simo
Jan 29 at 14:26

1

I would consider using one of these tools if I were you. It makes it much easier to manage multiple machines.

– Farhan.K
Jan 29 at 14:27

If there are any chances that those files will be changed by someone else after you modify them , thus causing a configuration drift , I would suggest going with @Farhan.K's suggestion as Puppet and Chef will check periodically if there has been any change to the file and if so , change it to what you define . If not , Puppet and Chef could have an overhead since they are agent based , and in this case I would strongly recommend using Ansible which is agentless and uses SSH to connect to managed hosts. You could manage one file and push it to managed hosts. good luck

– John Doe
Jan 29 at 16:20

currently we are not using those tools, wouldn't this approach involve full deployment cycle ? we only need this particular sync

– simo
Jan 29 at 14:12

Not necessarily, there's nothing wrong with using them to deploy files outside of the development cycle. Although they might be overkill for something small like this. I've edited my answer

– Farhan.K
Jan 29 at 14:21

thanks allot, that's what I needed

– simo
Jan 29 at 14:26

I would consider using one of these tools if I were you. It makes it much easier to manage multiple machines.

– Farhan.K
Jan 29 at 14:27

If there are any chances that those files will be changed by someone else after you modify them , thus causing a configuration drift , I would suggest going with @Farhan.K's suggestion as Puppet and Chef will check periodically if there has been any change to the file and if so , change it to what you define . If not , Puppet and Chef could have an overhead since they are agent based , and in this case I would strongly recommend using Ansible which is agentless and uses SSH to connect to managed hosts. You could manage one file and push it to managed hosts. good luck

– John Doe
Jan 29 at 16:20

|
show 6 more comments

Better to use rsync instead of scp. Advantages of rsync :

while read host

do

    rsync -avzh production.yml userid@$host:/destination_location/production.yml

done < hosts.txt

edited Jan 29 at 16:26

terdon♦

130k32255433

answered Jan 29 at 15:41

Praveen Kumar BS

1,464138

using while read; do ... done < hosts.txt is horrible -- same comment as here. Also @terdon.

– pizdelect
Feb 1 at 9:21

@pizdelect no, it isn't. It is the best and safest way to read lines from a file. The absolute safest is while IFS= read -r var; do..., but this is not needed here. IN any case, using a while read loop instead of something truly awful such as for line in $(cat file) is both standard and the best practice recommended pretty much everywhere. Also see 1, 2, 3, 4, 5.

– terdon♦
Feb 1 at 9:42

add a comment |

Better to use rsync instead of scp. Advantages of rsync :

while read host

do

    rsync -avzh production.yml userid@$host:/destination_location/production.yml

done < hosts.txt

edited Jan 29 at 16:26

terdon♦

130k32255433

answered Jan 29 at 15:41

Praveen Kumar BS

1,464138

using while read; do ... done < hosts.txt is horrible -- same comment as here. Also @terdon.

– pizdelect
Feb 1 at 9:21

@pizdelect no, it isn't. It is the best and safest way to read lines from a file. The absolute safest is while IFS= read -r var; do..., but this is not needed here. IN any case, using a while read loop instead of something truly awful such as for line in $(cat file) is both standard and the best practice recommended pretty much everywhere. Also see 1, 2, 3, 4, 5.

– terdon♦
Feb 1 at 9:42

add a comment |

Better to use rsync instead of scp. Advantages of rsync :

while read host

do

    rsync -avzh production.yml userid@$host:/destination_location/production.yml

done < hosts.txt

edited Jan 29 at 16:26

terdon♦

130k32255433

answered Jan 29 at 15:41

Praveen Kumar BS

1,464138

Better to use rsync instead of scp. Advantages of rsync :

while read host

do

    rsync -avzh production.yml userid@$host:/destination_location/production.yml

done < hosts.txt

edited Jan 29 at 16:26

terdon♦

130k32255433

answered Jan 29 at 15:41

Praveen Kumar BS

1,464138

edited Jan 29 at 16:26

terdon♦

130k32255433

edited Jan 29 at 16:26

terdon♦

130k32255433

edited Jan 29 at 16:26

terdon♦

130k32255433

answered Jan 29 at 15:41

Praveen Kumar BS

1,464138

answered Jan 29 at 15:41

Praveen Kumar BS

1,464138

answered Jan 29 at 15:41

Praveen Kumar BS

1,464138

using while read; do ... done < hosts.txt is horrible -- same comment as here. Also @terdon.

– pizdelect
Feb 1 at 9:21

@pizdelect no, it isn't. It is the best and safest way to read lines from a file. The absolute safest is while IFS= read -r var; do..., but this is not needed here. IN any case, using a while read loop instead of something truly awful such as for line in $(cat file) is both standard and the best practice recommended pretty much everywhere. Also see 1, 2, 3, 4, 5.

– terdon♦
Feb 1 at 9:42

add a comment |

using while read; do ... done < hosts.txt is horrible -- same comment as here. Also @terdon.

– pizdelect
Feb 1 at 9:21

@pizdelect no, it isn't. It is the best and safest way to read lines from a file. The absolute safest is while IFS= read -r var; do..., but this is not needed here. IN any case, using a while read loop instead of something truly awful such as for line in $(cat file) is both standard and the best practice recommended pretty much everywhere. Also see 1, 2, 3, 4, 5.

– terdon♦
Feb 1 at 9:42

using while read; do ... done < hosts.txt is horrible -- same comment as here. Also @terdon.

– pizdelect
Feb 1 at 9:21

@pizdelect no, it isn't. It is the best and safest way to read lines from a file. The absolute safest is while IFS= read -r var; do..., but this is not needed here. IN any case, using a while read loop instead of something truly awful such as for line in $(cat file) is both standard and the best practice recommended pretty much everywhere. Also see 1, 2, 3, 4, 5.

– terdon♦
Feb 1 at 9:42

add a comment |

draft saved

draft discarded

Thanks for contributing an answer to Unix & Linux Stack Exchange!

Please be sure to answer the question. Provide details and share your research!

But avoid …

Asking for help, clarification, or responding to other answers.

Making statements based on opinion; back them up with references or personal experience.

To learn more, see our tips on writing great answers.

draft saved

draft discarded

Sign up or log in

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

Post as a guest

Name

Required, but never shown

Post as a guest

Name

Required, but never shown

Sign up or log in

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

Post as a guest

Name

Required, but never shown

Sign up or log in

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

Post as a guest

Name

Required, but never shown

Sign up or log in

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

Post as a guest

Name

Required, but never shown

Name

Required, but never shown

Name

Required, but never shown

This page is only for reference, If you need detailed information, please check here

搜尋此網誌

Ytdyklly