Hi Robert, Thank you for the help. We had previously refered the link: https://docs.ceph.com/en/quincy/rados/configuration/mon-lookup-dns/ But we were not able to configure mon_dns_srv_name correctly. We find the following link: https://access.redhat.com/documentation/en-us/red_hat_ceph_storage/4/html/configuration_guide/ceph-monitor-configuration Which gives just a little more information about the DNS lookup. After following the link, we updated the ceph.conf as follows: ``` [root@storagenode3 ~]# cat /etc/ceph/ceph.conf [global] ms bind ipv6 = true ms bind ipv4 = false mon initial members = storagenode1,storagenode2,storagenode3 osd pool default crush rule = -1 mon dns srv name = ceph-mon fsid = ce479912-a277-45b6-87b1-203d3e43d776 public network = abcd:abcd:abcd::/64 cluster network = eff0:eff0:eff0::/64 [osd] osd memory target = 4294967296 [client.rgw.storagenode3.rgw0] host = storagenode3 keyring = /var/lib/ceph/radosgw/ceph-rgw.storagenode3.rgw0/keyring log file = /var/log/ceph/ceph-rgw-storagenode3.rgw0.log rgw frontends = beast endpoint=[abcd:abcd:abcd::23]:8080 rgw thread pool size = 512 [root@storagenode3 ~]# ``` We also updated the dns server as follows: ``` storagenode1.storage.com IN AAAA abcd:abcd:abcd::21 storagenode2.storage.com IN AAAA abcd:abcd:abcd::22 storagenode3.storage.com IN AAAA abcd:abcd:abcd::23 _ceph-mon._tcp.storage.com 60 IN SRV 10 60 6789 storagenode1.storage.com _ceph-mon._tcp.storage.com 60 IN SRV 10 60 6789 storagenode2.storage.com _ceph-mon._tcp.storage.com 60 IN SRV 10 60 6789 storagenode3.storage.com _ceph-mon._tcp.storage.com 60 IN SRV 10 60 3300 storagenode1.storage.com _ceph-mon._tcp.storage.com 60 IN SRV 10 60 3300 storagenode2.storage.com _ceph-mon._tcp.storage.com 60 IN SRV 10 60 3300 storagenode3.storage.com ``` But when we run the command ceph -s, we get the following error: ``` [root@storagenode3 ~]# ceph -s unable to get monitor info from DNS SRV with service name: ceph-mon 2023-02-02T15:18:14.098+0530 7f1313a58700 -1 failed for service _ceph-mon._tcp 2023-02-02T15:18:14.098+0530 7f1313a58700 -1 monclient: get_monmap_and_config cannot identify monitors to contact [errno 2] RADOS object not found (error connecting to the cluster) [root@storagenode3 ~]# ``` Could you please help us to configure the server using mon_dns_srv_name correctly? Thanks and Regards Kushagra Gupta _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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