[jira] [Updated] (CLOUDSTACK-3186) Duplicate entries in /etc/hosts file on VR after reboot

["Animesh Chaturvedi (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CLOUDSTACK-3186?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Animesh Chaturvedi updated CLOUDSTACK-3186:
-------------------------------------------

    Assignee: Sheng Yang  (was: Animesh Chaturvedi)

> Duplicate entries in /etc/hosts file on VR after reboot
> -------------------------------------------------------
>
>                 Key: CLOUDSTACK-3186
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-3186
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the default.) 
>          Components: Management Server
>    Affects Versions: 4.2.0
>         Environment: Latest build from master6-17-statble branch
>            Reporter: Sanjeev N
>            Assignee: Sheng Yang
>             Fix For: 4.3.0
>
>
> /etc/hosts file on VR contains the IP address to Host Name mappings.
> In 4.2 we have introduced a new entry called "data-server" and mapped to Router VMs eth0 interface ip address. This is for the guest vms  to access user-data and ssh-keys from the Router VM. 
> Please refer to bug https://issues.apache.org/jira/browse/CLOUDSTACK-2644 for more info.
> Making this entry in the hosts file is part of cloud-early-config file and every time a router is rebooted new entry would be made to the hosts file.
> If the router reboots multiple times for some reason, we see lot of duplicate entries in the hosts file.
> Following is the contents from /etc/hosts file from VR which was rebooted for multiple times:
> 127.0.0.1       localhost
> # The following lines are desirable for IPv6 capable hosts
> ::1     localhost ip6-localhost ip6-loopback
> ff02::1 ip6-allnodes
> ff02::2 ip6-allrouters
> 10.147.43.6 data-server
> 10.147.43.6 r-4-VM
> 10.147.43.6 data-server
> 10.147.43.6 r-4-VM
> 10.147.43.6 data-server
> 10.147.43.6 r-4-VM
> 10.147.43.5 s1
> 10.147.43.7 s1-passwd
> 10.147.43.10 addaf9b0-bdbc-4c4a-80ed-67664ad781e0
> 10.147.43.8 3b2804dd-225d-4cf3-bcdc-fed468c61192
> 10.147.43.130 s2
> 10.147.43.132 0e0df8e6-2c0f-455b-8571-b5f6a0dbd44e
> 10.147.43.133 s2-passwd
> 10.147.43.134 bf2e0e55-a2c9-4d26-a489-b8d8aa596350
> It would be good to check for the entries present in the file before appending to it and avoid duplicate entries.



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