question host acquiring installation lock forever in Support Questions

host acquiring installation lock forever

sebastianv — Sat, 24 Aug 2019 19:10:43 GMT

Hello, all the masters here!

am facing the problem of acquiring installation lock when installing cloudera manager for the first time, i did some googling but nothing works for me 😞

i have four computers, etc/hosts like:

127.0.0.1 localhost.localdomain localhost


172.16.34.143 cluster2.test.com cluster2
172.16.34.140 cluster3.test.com cluster3
172.16.34.139 cluster4.test.com cluster4
172.16.34.141 cluster5.test.com cluster5

and etc/sysconfig/network is set accordingly, i managed to have a host installation done which is the cluster2 of ip 172.16.34.143.

and the rest three hosts are all stuck in Acquiring installation lock procedure, for like hours!

the detail output is like:

/tmp/scm_prepare_node.bulkkxpo

using SSH_CLIENT to get the SCM hostname: 172.16.34.143 33121 22

opening logging file desciptor

Starting installation script...

Acquiring installation lock...

BEGIN flock 4

Can anyone help me with this problem?

Help would be highly appreciated! Thanks in advance!

Re: host acquiring installation lock forever

Harsh J — Sun, 20 Jul 2014 15:35:57 GMT

Leftover /tmp/scm* directories from earlier attempts may cause this issue. Look for such files on your hanging hosts and remove them and then retry the installation from the UI.

Re: host acquiring installation lock forever

sebastianv — Mon, 21 Jul 2014 03:07:57 GMT

Thanks for the reply, the problem is resolved through installation restart.

Re: host acquiring installation lock forever

hrnmm — Tue, 23 Dec 2014 20:57:13 GMT

you can remove /tmp/.scm_prepare_node.lock

Re: host acquiring installation lock forever

sandyws — Wed, 11 Feb 2015 11:59:31 GMT

Sometime just deleting lock file doesnt work. Need to restart cloudera-server service. Thanks

Re: host acquiring installation lock forever

GautamG — Tue, 17 Feb 2015 04:21:45 GMT

This is a known defect and we are working to fix it, thanks for your patience thus far.

Re: host acquiring installation lock forever

balakrishna — Fri, 10 Apr 2015 09:11:10 GMT

This worked for me. Thanks alot.

Re: host acquiring installation lock forever

shasta4 — Sat, 27 Jun 2015 06:19:57 GMT

If removing lock file doesn't help and if you are stuck on cloudera manager, do "Abort installation" and then retry on failed hosts.

Re: host acquiring installation lock forever

Vishwa828 — Fri, 14 Aug 2015 08:35:16 GMT

Hi,

Following has been done to get rid of the issue:

1) Aborted installation.

2) Logged in to each failed host and removed files in /tmp and retried installation on each failed host.

Below is the example:

rm -rf scm_prepare_node.VqVHCy66 scm_prepare_node.WjYHxBu2 scm_prepare_node.0Hk6W9O1 .scm_prepare_node.lock

Re: host acquiring installation lock forever

Vishwa828 — Fri, 14 Aug 2015 08:41:10 GMT

Removed any hidden files too under /tmp directory on the failed host.

Use ls -al command to view hidden files

Example:

.scm_prepare_node.lock

Re: host acquiring installation lock forever

Areduolc — Sun, 30 Dec 2018 05:38:58 GMT

I ran into the same issue with CM 5.16.1.

Try the following:

killall -9 scm_prepare_node.sh # this interrupts the annoying progress Acquiring installation lock...
rm -rf /tmp/scm_prepare_node*
rm /tmp/.scm_prepare_node.lock

Re: host acquiring installation lock forever

kranthi9625 — Fri, 23 Aug 2019 09:55:05 GMT

removing hidden files worked for me. thanks a lot