host acquiring installation lock forever

[#1]

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!

[#2 · Accepted solution]

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.

[#3]

removing hidden files worked for me. thanks a lot

[#4]

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