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https://issues.apache.org/jira/browse/CLOUDSTACK-7974?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14231280#comment-14231280
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Rohit Yadav commented on CLOUDSTACK-7974:
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[~jayapal] how about this fix -- we lowercase and then set the hostnames and
remove any entry that matches the loweredcase string value of the host? Can you
suggest if this needs to be done only in edithosts.sh or somewhere else and
only for /etc/hosts file or dhcphosts.txt file as well?
> deleted VM entries still exists in /etc/hosts and /etc/dhcphosts.txt files on
> virtual router
> --------------------------------------------------------------------------------------------
>
> Key: CLOUDSTACK-7974
> URL: https://issues.apache.org/jira/browse/CLOUDSTACK-7974
> Project: CloudStack
> Issue Type: Bug
> Security Level: Public(Anyone can view this level - this is the
> default.)
> Components: Virtual Router
> Affects Versions: 4.3.0
> Reporter: Yiping Zhang
> Fix For: 4.5.0, 4.6.0, 4.4.2, 4.4.3, 4.3.2
>
>
> We have noticed that entries for hosts which have been destroyed for a long
> time still exist in both /etc/dhcphosts.txt and /etc/hosts files on our
> Virtual Routers.
> To reproduce this bug, just create an instance, note down its MAC and IP
> address, then destroy the instance from web UI. Now check virtual router,
> and you will find that the entries still exist in /etc/dhcphosts.txt and
> /etc/hosts files.
> I did a bit more digging on virtual router, and immediately noticed the
> following:
> 1. /root/edithosts.sh script is only called when an instance is created, but
> not when an instance is destroyed.
> 2. After reading /root/edithosts.sh script, I am pretty certain that the
> function of this script is to add info about newly created instances into
> /etc/hosts and /etc/dhcphosts.txt files. So the script should really be
> renamed as /root/addhosts.sh to reflect its true function.
> 3. there is no script to properly delete entries from /etc/hosts and
> /etc/dhcphosts.txt file when instances are destroyed
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