# Cannot move node
**URL:** https://community.netdata.cloud/t/cannot-move-node/1452
**Category:** Help
**Tags:** agent, agent-installation, cloud-ui
**Created:** [June 21, 2021, 7:03am UTC](https://community.netdata.cloud/t/cannot-move-node/1452 "2021-06-21T07:03:06Z")
**Posts on this page:** 14
**Page:** 1
### Author:  [@wmertens](https://community.netdata.cloud/u/wmertens)
#### Post date: [June 21, 2021, 7:03am UTC](https://community.netdata.cloud/t/cannot-move-node/1452/1 "2021-06-21T07:03:06Z")
I moved a VM to another host and I copied the `/var/lib/netdata` folder so that it would retain the cloud configuration. The agent is running, but it can’t connect to the cloud, and in the error log I see
```auto
2021-06-21 07:00:46: netdata INFO : ACLK_Main : Attempting connection now
2021-06-21 07:00:47: netdata INFO : ACLK_Main : HTTPS "GET" request to "app.netdata.cloud" finished with HTTP code: 200
2021-06-21 07:00:47: netdata INFO : ACLK_Main : Getting Cloud /env successful
2021-06-21 07:00:47: netdata INFO : ACLK_Main : HTTPS "GET" request to "app.netdata.cloud" finished with HTTP code: 200
2021-06-21 07:00:47: netdata INFO : ACLK_Main : ACLK_OTP Got Challenge from Cloud
2021-06-21 07:00:47: netdata ERROR : ACLK_Main : Decryption of the challenge failed: error:04099079:rsa routines:RSA_padding_check_PKCS1_OAEP_mgf1:oaep decoding error
2021-06-21 07:00:47: netdata ERROR : ACLK_Main : Output buffer for encoding size=512 is not large enough for 18446744073709551615-bytes input
2021-06-21 07:00:47: netdata INFO : ACLK_Main : HTTPS "POST" request to "app.netdata.cloud" finished with HTTP code: 403
2021-06-21 07:00:47: netdata ERROR : ACLK_Main : ACLK_OTP Password HTTP code not 201 Created (got 403)
2021-06-21 07:00:47: netdata ERROR : ACLK_Main : Cloud returned EC="TODO trace-id", Msg-Key:"ErrIncorrectResponse", Msg:"incorrect challenge response", BlockRetry:false, Backoff:0s (-1 unset by cloud)
2021-06-21 07:00:47: netdata ERROR : ACLK_Main : Error passing Challenge/Response to get OTP
2021-06-21 07:00:47: netdata INFO : ACLK_Main : Wait before attempting to reconnect in 0.000 seconds
2021-06-21 07:00:47: netdata INFO : ACLK_Main : Attempting connection now
2021-06-21 07:00:48: netdata INFO : ACLK_Main : HTTPS "GET" request to "app.netdata.cloud" finished with HTTP code: 200
2021-06-21 07:00:48: netdata INFO : ACLK_Main : Getting Cloud /env successful
2021-06-21 07:00:48: netdata INFO : ACLK_Main : HTTPS "GET" request to "app.netdata.cloud" finished with HTTP code: 409
2021-06-21 07:00:48: netdata ERROR : ACLK_Main : ACLK_OTP Challenge HTTP code not 200 OK (got 409)
2021-06-21 07:00:48: netdata ERROR : ACLK_Main : Cloud returned EC="TODO trace-id", Msg-Key:"ErrDuplicatedChallenge", Msg:"delay retry 1m0s: duplicated challenge", BlockRetry:false, Backoff:60s (-1 unset by cloud)
2021-06-21 07:00:48: netdata ERROR : ACLK_Main : Error passing Challenge/Response to get OTP
2021-06-21 07:00:48: netdata INFO : ACLK_Main : Wait before attempting to reconnect in 60.000 seconds
```
especially the `ACLK_Main : Output buffer for encoding size=512 is not large enough for 18446744073709551615-bytes input` seems concerning?
I also don’t have the old metrics any more, can I copy those from somewhere? I still have the old image available.
---
### Author:  [@underhood](https://community.netdata.cloud/u/underhood)
#### Post date: [June 21, 2021, 10:24am UTC](https://community.netdata.cloud/t/cannot-move-node/1452/2 "2021-06-21T10:24:52Z")
@wmertens thanks for the report. Could you paste output of `netdata -W buildinfo` of the offending agent?
I will try to investigate the issue ASAP.
---
### Author:  [@wmertens](https://community.netdata.cloud/u/wmertens)
#### Post date: [June 21, 2021, 11:53am UTC](https://community.netdata.cloud/t/cannot-move-node/1452/3 "2021-06-21T11:53:26Z")
@underhood
```auto
Version: netdata v1.31.0
Configure options: '--disable-dependency-tracking' '--prefix=/nix/store/mhms2gjllhpqmq66qvv7a4fwcw8z6xcn-netdata-1.31.0' '--localstatedir=/var' '--sysconfdir=/etc' '--enable-cloud' '--with-aclk-ng' 'CC=gcc' 'CXX=g++' 'PKG_CONFIG=pkg-config' 'PKG_CONFIG_PATH=/nix/store/iajslqx0fpnvfvgdxxipx3lr5yg59k1m-curl-7.76.1-dev/lib/pkgconfig:/nix/store/5q2d222hp22aq05pnp4yfszd3kyk3y42-nghttp2-1.43.0-dev/lib/pkgconfig:/nix/store/ilfrz428psdz4gzs4p68xna76gv585pq-libidn-1.36-dev/lib/pkgconfig:/nix/store/7whk47dml5f1dpvy6cgvaf80ll1h7pkd-zlib-1.2.11-dev/lib/pkgconfig:/nix/store/az4514nlmahn2vna0vjbir7c5gd3lsir-libkrb5-1.18-dev/lib/pkgconfig:/nix/store/7mdjirqjkx4g66bna1c7p4dglzp5j3yr-openssl-1.1.1k-dev/lib/pkgconfig:/nix/store/pl4dm5p8rcxldvn5jwydi2isr13lw52w-libssh2-1.9.0-dev/lib/pkgconfig:/nix/store/lyb99rmgggp7fdfmbpqa9nqmwvv25ldc-brotli-1.0.9-dev/lib/pkgconfig:/nix/store/ky4crjw22rm0fas3ar0074ciwybbdg10-libcap-2.48-dev/lib/pkgconfig:/nix/store/sj22y1anmk91csb5ccia48010p3f1a91-attr-2.4.48-dev/lib/pkgconfig:/nix/store/lp97ksl2l0d0z2mgslv6jcivajj1yywr-util-linux-2.36.2-dev/lib/pkgconfig:/nix/store/rcbinhm2wic6a12mpfs4v56x5kchzjv9-libuv-1.41.0/lib/pkgconfig:/nix/store/dav96yaasmxgpwajbpnyd90zdigjjb2c-lz4-1.9.3-dev/lib/pkgconfig:/nix/store/dvqbn4hikq1yd74bz15hhzkmxx3xj3x2-freeipmi-1.6.8/lib/pkgconfig:/nix/store/jk1dqr21vhcndq8s3jmy38ah9v66dya8-libmnl-1.0.4/lib/pkgconfig:/nix/store/4q27irlas45yknk3f1b4x2wprbil445m-libnetfilter_acct-1.0.3/lib/pkgconfig:/nix/store/w1nk8cbv3a8mg6jyywd51pfx55bh7zvb-json-c-0.15-dev/lib/pkgconfig'
Features:
dbengine: YES
Native HTTPS: YES
Netdata Cloud: YES
Cloud Implementation: Next Generation
TLS Host Verification: YES
Libraries:
jemalloc: NO
JSON-C: YES
libcap: YES
libcrypto: YES
libm: YES
tcalloc: NO
zlib: YES
Plugins:
apps: YES
cgroup Network Tracking: YES
CUPS: NO
EBPF: NO
IPMI: YES
NFACCT: YES
perf: YES
slabinfo: YES
Xen: NO
Xen VBD Error Tracking: NO
Exporters:
AWS Kinesis: NO
GCP PubSub: NO
MongoDB: NO
Prometheus Remote Write: NO
```
---
### Author:  [@wmertens](https://community.netdata.cloud/u/wmertens)
#### Post date: [June 21, 2021, 11:55am UTC](https://community.netdata.cloud/t/cannot-move-node/1452/4 "2021-06-21T11:55:31Z")
(incidentally, should we try building with jemalloc and/or tcalloc for some great benefit?)
---
### Author:  [@wmertens](https://community.netdata.cloud/u/wmertens)
#### Post date: [June 21, 2021, 11:57am UTC](https://community.netdata.cloud/t/cannot-move-node/1452/5 "2021-06-21T11:57:55Z")
If you want to try the binaries yourself, [install Nix](https://nixos.org/download.html) on any Linux and then run `nix-shell -p netdata`, this will make it ephemerally avaliable.
---
### Author:  [@underhood](https://community.netdata.cloud/u/underhood)
#### Post date: [June 21, 2021, 3:34pm UTC](https://community.netdata.cloud/t/cannot-move-node/1452/6 "2021-06-21T15:34:50Z")
@wmertens I will try the Nix agent. The one you move from is the same version? The error log posted seems at first sight not directly related to the transfer of the credentials.
---
### Author:  [@underhood](https://community.netdata.cloud/u/underhood)
#### Post date: [June 21, 2021, 4:15pm UTC](https://community.netdata.cloud/t/cannot-move-node/1452/8 "2021-06-21T16:15:02Z")
> [@wmertens](#):
>
> nix-shell -p netdata
I seem to have an issue using netdata from nix-shell. From claiming to netdata not starting due to missing files etc. I guess will have to study the thing a bit first.
---
### Author:  [@wmertens](https://community.netdata.cloud/u/wmertens)
#### Post date: [June 21, 2021, 5:19pm UTC](https://community.netdata.cloud/t/cannot-move-node/1452/9 "2021-06-21T17:19:48Z")
Oh right, the configuration actually comes from the “module” which is NixOS-only, not nixpkgs (which you are using now). So the binary is the same but it’s missing the config file and directory configuration.
This is the systemd configuration it makes: [nixpkgs/netdata.nix at 3be5e9248e23f5dbf0863c9fc6a0f2cbe1ef3484 · NixOS/nixpkgs · GitHub](https://github.com/NixOS/nixpkgs/blob/3be5e9248e23f5dbf0863c9fc6a0f2cbe1ef3484/nixos/modules/services/monitoring/netdata.nix#L165-L209)
and the plugins are actually wrapped in a separate package before passing it to netdata: [nixpkgs/netdata.nix at 3be5e9248e23f5dbf0863c9fc6a0f2cbe1ef3484 · NixOS/nixpkgs · GitHub](https://github.com/NixOS/nixpkgs/blob/3be5e9248e23f5dbf0863c9fc6a0f2cbe1ef3484/nixos/modules/services/monitoring/netdata.nix#L8-L36)
---
### Author:  [@underhood](https://community.netdata.cloud/u/underhood)
#### Post date: [June 23, 2021, 6:58am UTC](https://community.netdata.cloud/t/cannot-move-node/1452/10 "2021-06-23T06:58:40Z")
@wcmertens what is the right way to start using netdata in nixos env? Should I use nixos instead of nixpkgs?
---
### Author:  [@wmertens](https://community.netdata.cloud/u/wmertens)
#### Post date: [June 23, 2021, 8:01am UTC](https://community.netdata.cloud/t/cannot-move-node/1452/11 "2021-06-23T08:01:36Z")
Yes installing NixOS would be best, then you have to put in the system configuration
```auto
services.netdata.enable = true;
```
---
### Author:  [@underhood](https://community.netdata.cloud/u/underhood)
#### Post date: [June 28, 2021, 7:26am UTC](https://community.netdata.cloud/t/cannot-move-node/1452/12 "2021-06-28T07:26:42Z")
`nix-env -iA nixos.netdata` seems to install netdata without cloud support for me on NixOS VM. Guess I have to make it work with nixpkgs somehow
---
### Author:  [@wmertens](https://community.netdata.cloud/u/wmertens)
#### Post date: [June 28, 2021, 11:11am UTC](https://community.netdata.cloud/t/cannot-move-node/1452/13 "2021-06-28T11:11:15Z")
Ah yes, that’s being worked on in master. Edit your `/root/.nix-channels` file to point to nixos-unstable, and run `nixos-rebuild switch --update`
---
### Author:  [@wmertens](https://community.netdata.cloud/u/wmertens)
#### Post date: [July 1, 2021, 6:39am UTC](https://community.netdata.cloud/t/cannot-move-node/1452/14 "2021-07-01T06:39:33Z")
@underhood yesterday a patch was merged into nixos-unstable that fixes communication for netdatacli. So with the following configuration:
```nohighlight
services.netdata.enable = true;
environment.systemPackages = with pkgs; [netdata];
```
you can just run the netdata commands
---
### Author:  [@underhood](https://community.netdata.cloud/u/underhood)
#### Post date: [July 7, 2021, 2:19pm UTC](https://community.netdata.cloud/t/cannot-move-node/1452/15 "2021-07-07T14:19:58Z")
Thanks I will try that again ASAP. Currently a bit in crunch mode for some new features to be released. But didn’t forget about this.