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Bug 1359627 - [ceph-ansible] RHEL install on a IPv6 setup fails
Summary: [ceph-ansible] RHEL install on a IPv6 setup fails
Alias: None
Product: Red Hat Storage Console
Classification: Red Hat
Component: documentation
Version: 2
Hardware: Unspecified
OS: Linux
Target Milestone: ---
: 3
Assignee: Aron Gunn
QA Contact: sds-qe-bugs
Depends On:
TreeView+ depends on / blocked
Reported: 2016-07-25 07:36 UTC by Tejas
Modified: 2018-11-19 05:33 UTC (History)
8 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Last Closed: 2018-11-19 05:33:23 UTC
Target Upstream Version:

Attachments (Terms of Use)

Description Tejas 2016-07-25 07:36:38 UTC
Description of problem:
I am trying to install a RHEL cluster using the IPv6 address.
However the MON is taking the IPv4 address and the OSD is taking the IPv6 address

This seems to be a regression since this has worked before in our testing.

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. Configure group_vars/all file to take the IPv6 network
2. Run ansible-playbook, cluster creation is successful  
3. MON is running on IPv4 address

Additional info:

The playbook log and the group_vars files are located at :

I have one node which has both MOn and OSD

root@magna086 ~]# ifconfig
eno1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet  netmask  broadcast
        inet6 2620:52:0:880:225:90ff:fefc:23fa  prefixlen 64  scopeid 0x0<global>
        inet6 fe80::225:90ff:fefc:23fa  prefixlen 64  scopeid 0x20<link>
        ether 00:25:90:fc:23:fa  txqueuelen 1000  (Ethernet)
        RX packets 11517101  bytes 2053090786 (1.9 GiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 418638  bytes 71379306 (68.0 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        device memory 0xfb920000-fb93ffff  

eno2: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        ether 00:25:90:fc:23:fb  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        device memory 0xfb900000-fb91ffff  

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet  netmask
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 0  (Local Loopback)
        RX packets 7  bytes 992 (992.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 7  bytes 992 (992.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

root@magna086 ~]# ceph -s
    cluster 15f4edf3-01fa-4b2b-8ed8-65e6628caf95
     health HEALTH_ERR
            64 pgs are stuck inactive for more than 300 seconds
            64 pgs degraded
            64 pgs stuck inactive
            64 pgs undersized
            too few PGs per OSD (21 < min 30)
     monmap e1: 1 mons at {magna086=}
            election epoch 3, quorum 0 magna086
     osdmap e13: 3 osds: 3 up, 3 in
            flags sortbitwise
      pgmap v23: 64 pgs, 1 pools, 0 bytes data, 0 objects
            100 MB used, 2791 GB / 2791 GB avail
                  64 undersized+degraded+peered
[root@magna086 ~]# 
[root@magna086 ~]# 
[root@magna086 ~]# cat /etc/ceph/ceph.conf 
# Please do not change this file directly since it is managed by Ansible and will be overwritten

fsid = 15f4edf3-01fa-4b2b-8ed8-65e6628caf95
max open files = 131072
admin socket = /var/run/ceph/$cluster-$type.$id.$pid.$cctid.asok # must be writable by QEMU and allowed by SELinux or AppArmor
log file = /var/log/ceph/qemu-guest-$pid.log # must be writable by QEMU and allowed by SELinux or AppArmor

host = magna086
# we need to check if monitor_interface is defined in the inventory per host or if it's set in a group_vars file
mon addr =

osd mkfs type = xfs
osd mkfs options xfs = -f -i size=2048
osd mount options xfs = noatime,largeio,inode64,swalloc
osd journal size = 500
cluster_network = 2620:52:0:880:225:90ff:fefc:0/64
public_network = 2620:52:0:880:225:90ff:fefc:0/64

installer node:
Monitor options
# You must define either monitor_interface or monitor_address. Preference
# will go to monitor_interface if both are defined.
monitor_interface: eno1
#mon_use_fqdn: false # if set to true, the MON name used will be the fqdn in the ceph.conf

## OSD options
journal_size: 500
public_network: 2620:52:0:880:225:90ff:fefc:0/64
#cluster_network: "{{ public_network }}"

Comment 2 Andrew Schoen 2016-07-25 14:24:46 UTC
If you use "monitor_interface" you'll always get the IPV4 address. If you need IPV6, you can use "monitor_address" and define it manually. I'm going to push this out of v2 as there is a workaround for this.

Comment 4 Harish NV Rao 2016-07-27 07:27:18 UTC
The info in comment 2 needs to be added as part of installation guide for 2.0.

Doc, team please get in touch with Tejas and Rachana for further details.

Comment 7 Tejas 2016-07-28 15:43:33 UTC
hi Aron,

    While installing using ceph-ansiblw using IPv6, we need to set the 
monitor_address : <IPv6 add>
instead of monitor_interface in the "group_vars/all" file

Please mention this as a note in the Doc.


Comment 9 Tejas 2016-08-01 13:53:51 UTC
Checked the docs, moving to Verified state.

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