Unable to register new client to hosted chef server

Hi

While I am trying to bootstarp a client receiving error “Failed to register new client, 4 tries remaining” "Response: HTTP 502 - 502 “Bad Gateway”

We have proxy in place but I can communicate to chef hosted server without proxy setting but not able to bootstrap client.

output

[root@VM002 cookbooks]# knife bootstrap 3.8.86.38 -P xxxxx -x root
Doing old-style registration with the validation key at /root/chef-starter/chef-repo/.chef/services-dev-validator.pem...
Delete your validation key in order to use your user credentials instead

Connecting to 3.8.86.38
3.8.86.38 -----> Installing Chef Omnibus (-v 12)
3.8.86.38 trying wget...
3.8.86.38 trying curl...
3.8.86.38 trying perl...
3.8.86.38 trying python...
3.8.86.38 url   https://opscode-omnibus-packages.s3.amazonaws.com/el/6/x86_64/chef-12.6.0-1.el6.x86_64.rpm
3.8.86.38 md5   8f5686d11c3778c8a61fd50f5020b6e5
3.8.86.38 sha256        152e9aeb3c654db19b2e72cc290ec6d92bf6b40e74807c3eb1a0c828f20c99b9
3.8.86.38 version       12.6.0downloaded metadata file looks valid...
3.8.86.38 downloading https://opscode-omnibus-packages.s3.amazonaws.com/el/6/x86_64/chef-12.6.0-1.el6.x86_64.rpm
3.8.86.38   to file /tmp/install.sh.18390/chef-12.6.0-1.el6.x86_64.rpm
3.8.86.38 trying wget...
3.8.86.38 Comparing checksum with sha256sum...
3.8.86.38 Installing chef 12
3.8.86.38 installing with rpm...
3.8.86.38 warning: /tmp/install.sh.18390/chef-12.6.0-1.el6.x86_64.rpm: Header V4 DSA/SHA1 Signature, key ID 83ef826a: NOKEY
3.8.86.38 Preparing...                ########################################### [100%]
3.8.86.38    1:chef                   ########################################### [100%]
3.8.86.38 Thank you for installing Chef!
3.8.86.38 Starting the first Chef Client run...
3.8.86.38 Starting Chef Client, version 12.6.0
3.8.86.38 Creating a new client identity for VM002.aimsnew.com using the validator key.
3.8.86.38 [2016-01-14T08:28:25-05:00] WARN: Failed to register new client, 4 tries remaining
3.8.86.38 [2016-01-14T08:28:25-05:00] WARN: Response: HTTP 502 - 502 "Bad Gateway"
3.8.86.38 [2016-01-14T08:28:25-05:00] WARN: Failed to register new client, 3 tries remaining
3.8.86.38 [2016-01-14T08:28:25-05:00] WARN: Response: HTTP 502 - 502 "Bad Gateway"
3.8.86.38 [2016-01-14T08:28:25-05:00] WARN: Failed to register new client, 2 tries remaining
3.8.86.38 [2016-01-14T08:28:25-05:00] WARN: Response: HTTP 502 - 502 "Bad Gateway"
3.8.86.38 [2016-01-14T08:28:25-05:00] WARN: Failed to register new client, 1 tries remaining
3.8.86.38 [2016-01-14T08:28:25-05:00] WARN: Response: HTTP 502 - 502 "Bad Gateway"
3.8.86.38 [2016-01-14T08:28:25-05:00] WARN: Failed to register new client, 0 tries remaining
3.8.86.38 [2016-01-14T08:28:25-05:00] WARN: Response: HTTP 502 - 502 "Bad Gateway"
3.8.86.38
3.8.86.38 Running handlers:
3.8.86.38 [2016-01-14T08:28:25-05:00] ERROR: Running exception handlers
3.8.86.38 Running handlers complete
3.8.86.38 [2016-01-14T08:28:25-05:00] ERROR: Exception handlers complete
3.8.86.38 Chef Client failed. 0 resources updated in 03 seconds
3.8.86.38 [2016-01-14T08:28:25-05:00] FATAL: Stacktrace dumped to /var/chef/cache/chef-stacktrace.out
3.8.86.38 [2016-01-14T08:28:25-05:00] FATAL: Please provide the contents of the stacktrace.out file if you file a bug report
3.8.86.38 [2016-01-14T08:28:25-05:00] ERROR: undefined method `closed?' for nil:NilClass
3.8.86.38 [2016-01-14T08:28:25-05:00] FATAL: Chef::Exceptions::ChildConvergeError: Chef run process exited unsuccessfully (exit code 1)
[root@VM002 cookbooks]#

Suppressed the output.
Thank you.

This generally means Erchef isn’t running on the Chef Server. Are you able to run knife client list or similar commands from your workstation? If you can, then it might be another proxy server somewhere interfering, but if you can’t then try restarting the Chef Server (chef-server-ctl restart).