/usr/bin/env: ambari-python-wrap: No such file or directory

[#1]

Dear Community,

I am trying to install an ambari cluster using Use Public Repository.

I have already configured the Password Less on all the servers and I could connect from ambari node to the others using ssh root@node1,2...

I copied the right ssh private key however the confirmation of hosts failed with:

Error while bootstrapping:
/usr/bin/env: ambari-python-wrap: No such file or directory

 I could not find any ambari-agent folder , should I have? I did not install agent manually ..

Please help

Thanks and Regards

[#2]

@asmarz 
Try reinstalling Ambari Agent Binaries once.

Ideally there should be a Symlink created as following when you successfully install Ambari Agent Binary to a host. The symlink points to a Python binary installed on that host.

Example:

#  ls -lart /usr/bin/ambari-python-wrap
lrwxrwxrwx. 1 root root 15 Feb 15  2019 /usr/bin/ambari-python-wrap -> /usr/bin/python

.

Try reinstalling ambari agent.

# which python
# ls -l /usr/bin/python
# /usr/bin/python -V

# yum reinstall ambari-agent
# ls -lart /usr/bin/ambari-python-wrap

.

[#3]

[root@luapp698 bin]# ls -l /usr/bin/python
lrwxrwxrwx. 1 root root 7 Nov 7 13:41 /usr/bin/python -> python2

[root@luapp698 bin]# /usr/bin/python -V
Python 2.7.5

[root@luapp698 bin]# ls -lart /usr/bin/ambari-python-wrap
ls: cannot access /usr/bin/ambari-python-wrap: No such file or directory

I have reinstall the agent but i have the same issue 😞

Thanks

[#4]

@asmarz 

On the Ambari Agent host where you are observing this issue please try this.

You will find a file like following "/var/lib/ambari-agent/tmp/create-python-wrap.sh". Can you please try to run that file manually as "root" user like?

# sh  -x  /var/lib/ambari-agent/tmp/create-python-wrap.sh

Above should create the mentioned symlink ... but if it does not work then please share the Full output of the above commend from the terminal as it is.

.

Once the above script is executed fine then please check if the link is created properly or not?

# ls -l /usr/bin//ambari-python-wrap

[#5]

[root@luapp698 ambari-agent]# sh -x /var/lib/ambari-agent/tmp/create-python-wrap.sh
sh: /var/lib/ambari-agent/tmp/create-python-wrap.sh: No such file or directory
[root@luapp698 ambari-agent]# sudo su
[root@luapp698 ambari-agent]# ^C
[root@luapp698 ambari-agent]# cd /var/lib/ambari-agent/
[root@luapp698 ambari-agent]# ll
total 32
-rwxr-xr-x 1 root root 1116 Aug 22 02:11 ambari-env.sh
-rwxr-xr-x 1 root root 1345 Aug 22 02:11 ambari-sudo.sh
drwxr-xr-x 2 root root 26 Nov 13 10:05 bin
drwxr-xr-x 9 root root 179 Nov 13 10:05 cache
drwxr-xr-x 3 root root 17 Aug 22 02:12 cred
drwxr-xr-x 2 root root 21 Nov 13 10:05 data
-rwxr-xr-x 1 root root 8349 Aug 22 02:11 install-helper.sh
drwxr-xr-x 2 root root 6 Aug 22 02:11 keys
drwxr-xr-x 2 root root 6 Aug 22 02:11 lib
drwxr-xr-x 2 root root 6 Aug 22 02:11 tmp
drwxr-xr-x 2 root root 53 Nov 13 10:05 tools
-rwxr-xr-x 1 root root 2326 Aug 22 02:11 upgrade_agent_configs.py
-rwxr-xr-x 2 root root 2166 Aug 22 02:13 upgrade_agent_configs.pyc
-rwxr-xr-x 2 root root 2166 Aug 22 02:13 upgrade_agent_configs.pyo
[root@luapp698 ambari-agent]#

I have downloaded this 

https://docs.cloudera.com/HDPDocuments/Ambari-2.7.4.0/administering-ambari/content/amb_download_the_...

and installed like this 

https://docs.cloudera.com/HDPDocuments/Ambari-2.7.4.0/administering-ambari/content/amb_download_the_...

I think that the problem is deeper ..

Just as a supplement information, I have installed one ambari server in centos7 and multiple nodes, I have then tried to install ambari agent on ambari server and one of those node but the error is the same

I have set passwordless on all the nodes before installing agent, I could connect to all of nodes from the ambari using ssh, do I need even to install agents on all the nodes?

Thank you in advance

[#6]

I have nothing under the /tmp directory

[#7 · Accepted solution]

@asmarz 

Can you try this once.

Copy the "/var/lib/ambari-server/create-python-wrap.sh" file from Ambari Server node and then Place it on the problematic Agent node at "/var/lib/ambari-agent/tmp/create-python-wrap.sh" and then again try to run the same command again and then verify if it creates the link?

# sh -x /var/lib/ambari-agent/tmp/create-python-wrap.sh

.

Also pleas verify if you are using correct ambari agent binary on the host?

# rpm -qa | grep ambari
# grep ambari /var/log/yum.log

.

[#8]

Hello

[root@luapp698 tmp]# rpm -qa | grep ambari
ambari-server-2.7.4.0-118.x86_64
ambari-agent-2.7.4.0-118.x86_64

[root@luapp698 tmp]# grep ambari /var/log/yum.log
Nov 08 14:55:40 Installed: ambari-server-2.7.4.0-118.x86_64
Nov 12 17:40:20 Installed: ambari-agent-2.7.4.0-118.x86_64
Nov 13 10:05:16 Installed: ambari-agent-2.7.4.0-118.x86_64

Now I am getting this error

==========================
Running create-python-wrap script...
==========================

Command start time 2019-11-13 10:43:52
bash: /var/lib/ambari-agent/tmp/ambari-sudo.sh: Permission denied

Connection to luapp698.lu.ema.ad.pwcinternal.com closed.
SSH command execution finished
host=luapp698.lu.ema.ad.pwcinternal.com, exitcode=126
Command end time 2019-11-13 10:43:52

ERROR: Bootstrap of host luapp698.lu.ema.ad.pwcinternal.com fails because previous action finished with non-zero exit code (126)
ERROR MESSAGE: Connection to luapp698.lu.ema.ad.pwcinternal.com closed.

STDOUT: bash: /var/lib/ambari-agent/tmp/ambari-sudo.sh: Permission denied

Connection to luapp698.lu.ema.ad.pwcinternal.com closed.

in SSH

[root@luapp698 tmp]# ll
total 16
drwxr-xr-x 6 root root 4096 Nov 13 10:43 ambari_commons
-rwx------ 1 root root 1345 Nov 13 10:43 ambari-sudo.sh
-rwxr-xr-x 1 root root 1577 Nov 13 10:43 create-python-wrap.sh
-rwxr-xr-x 1 root root 1558 Nov 13 10:43 os_check_type1573638232.py

What should be the issue please?

[#9]

@asmarz 
We see the sudoer error.

Command start time 2019-11-13 10:43:52
bash: /var/lib/ambari-agent/tmp/ambari-sudo.sh: Permission denied

 So please make sure that Either you are running amabri agent as "root" user. You can verify it by looking at the following property:

# grep run_as /etc/ambari-agent/conf/ambari-agent.ini
run_as_user=root

OR  You have configured the Sudoer permissions properly as mentioned in the doc:
https://docs.cloudera.com/HDPDocuments/HDP3/HDP-3.1.4/securing-credentials/content/ambari_sec_how_to...

[#10]

yes it is the case

grep run_as /etc/ambari-agent/conf/ambari-agent.ini

run_as_user=root

and

[root@server tmp]# ambari-agent start
bash: /var/lib/ambari-agent/bin/ambari-agent: Permission denied

i am with a root user ..