# How to setup a small test environment?
**URL:** https://forum.syncthing.net/t/how-to-setup-a-small-test-environment/272
**Category:** Development
**Created:** [May 26, 2014, 8:38am UTC](https://forum.syncthing.net/t/how-to-setup-a-small-test-environment/272 "2014-05-26T08:38:59Z")
**Posts on this page:** 8
**Page:** 1
### Author:  [@jedie](https://forum.syncthing.net/u/jedie)
#### Post date: [May 26, 2014, 8:38am UTC](https://forum.syncthing.net/t/how-to-setup-a-small-test-environment/272/1 "2014-05-26T08:38:59Z")
Sometimes is will be good, to have a small test instance. Only one repro with only a handfull of files.
How to setup this?
e.g.: It is possible to run more than one instance on the same machine and sync “via” localhost?
Run one instance, chnage the ports and start another instance and change the ports?!?
---
### Author:  [@jedie](https://forum.syncthing.net/u/jedie)
#### Post date: [May 26, 2014, 8:40am UTC](https://forum.syncthing.net/t/how-to-setup-a-small-test-environment/272/2 "2014-05-26T08:40:34Z")
Maybe use “-home” to use different **.config** directories?
---
### Author:  [@calmh](https://forum.syncthing.net/u/calmh)
#### Post date: [May 26, 2014, 8:41am UTC](https://forum.syncthing.net/t/how-to-setup-a-small-test-environment/272/3 "2014-05-26T08:41:34Z")
There’s a script, which is fairly involved, that does this, in [https://github.com/calmh/syncthing/blob/master/integration/test.sh](https://github.com/calmh/syncthing/blob/master/integration/test.sh). The basics is to just start multiple instances with separate listening ports and hard code the node address/port since local discovery doesn’t work within the same host.
---
### Author:  [@jedie](https://forum.syncthing.net/u/jedie)
#### Post date: [May 26, 2014, 9:04am UTC](https://forum.syncthing.net/t/how-to-setup-a-small-test-environment/272/4 "2014-05-26T09:04:16Z")
Hm, didn’t see how it helps.
I’m working on something like this:
Startup file 01:
```
#!/bin/bash
BASE_DIR=$(pwd)/instance01/
SYNCTHING_BIN=/home/syncthing/bin/syncthing
(
set -x
${SYNCTHING_BIN} -version
HOME=${BASE_DIR}
${SYNCTHING_BIN} -home=${BASE_DIR}\syncthing_configs
)
```
and startup file 02:
```
#!/bin/bash
BASE_DIR=$(pwd)/instance02/
SYNCTHING_BIN=/home/syncthing/bin/syncthing
(
set -x
${SYNCTHING_BIN} -version
HOME=${BASE_DIR}
${SYNCTHING_BIN} -home=${BASE_DIR}\syncthing_configs
```
)
Only the BASE\_DIR is changed.
Start first skript and change ports. Start second script and change ports. Will result in something like this: 
The configs looks like this:
config from instance01:
```
127.0.0.1:22001
127.0.0.1:22002
127.0.0.1:8001
127.0.0.1:22001
announce.syncthing.net:22025
false
false
21026
16
0
3
60
10000
true
false
```
config from instance02:
```
127.0.0.1:22001
127.0.0.1:22002
127.0.0.1:8002
127.0.0.1:22002
announce.syncthing.net:22025
false
false
21027
16
0
3
60
10000
true
false
```
---
### Author:  [@jedie](https://forum.syncthing.net/u/jedie)
#### Post date: [May 26, 2014, 9:14am UTC](https://forum.syncthing.net/t/how-to-setup-a-small-test-environment/272/5 "2014-05-26T09:14:47Z")
I update configs…
It works fine!
The error from [https://github.com/calmh/syncthing/issues/284](https://github.com/calmh/syncthing/issues/284) didn’t happen.
---
### Author:  [@jedie](https://forum.syncthing.net/u/jedie)
#### Post date: [May 26, 2014, 12:41pm UTC](https://forum.syncthing.net/t/how-to-setup-a-small-test-environment/272/6 "2014-05-26T12:41:21Z")
set a other **HOME=** under linux for testing, is IMHO a good solution.
I would like to do the same under windows. I looked into [https://github.com/calmh/syncthing/blob/master/cmd/syncthing/main.go](https://github.com/calmh/syncthing/blob/master/cmd/syncthing/main.go) and see some environment variables that are used under windows. So i created a batch start file for this:
```
@title syncthing test
set HOMEDRIVE=D:
set HOMEPATH=\synthing_test
set USERPROFILE=%HOMEDRIVE%%HOMEPATH%
set APPDATA=%USERPROFILE%\Roaming
set LOCALAPPDATA=%USERPROFILE%\Local
syncthing.exe
@pause
```
What i didn’t find out, how the computer name are get trou. I tried this:
```
set COMPUTERNAME=%USERDOMAIN%_test
set USERDOMAIN_ROAMINGPROFILE=%USERDOMAIN%_test
set USERDOMAIN=%USERDOMAIN%_test
```
Doesn’t work. But ok, i start it one time and change the config.
So now i can setup a “test” network on linux and windows, independently from productive usage 😉
---
### Author:  [@jedie](https://forum.syncthing.net/u/jedie)
#### Post date: [May 28, 2014, 9:23pm UTC](https://forum.syncthing.net/t/how-to-setup-a-small-test-environment/272/7 "2014-05-28T21:23:52Z")
I have created [https://github.com/jedie/syncthing/wiki/Test-Syncthing](https://github.com/jedie/syncthing/wiki/Test-Syncthing) for this.
EDIT: New topic here -\> [How to create Syncthing test environments](https://forum.syncthing.net/t/how-to-create-syncthing-test-environemnts/406)
---
### Author:  [@system](https://forum.syncthing.net/u/system)
#### Post date: [May 12, 2017, 1:17pm UTC](https://forum.syncthing.net/t/how-to-setup-a-small-test-environment/272/8 "2017-05-12T13:17:04Z")