rgw multisite with https endpoints - ceph-users

31 Mar 2020

Hi there

I have a fairly simple ceph multisite configuration with 2 ceph clusters 
in 2 different datacenters in the same city
The rgws have this config for ssl:

rgw_frontends = civetweb port=7480+443s 
ssl_certificate=/opt/ssl/ceph-bundle.pem

The certificate is a real issued certificate, not self signed

I configured the multisite with the guide from 
https://docs.ceph.com/docs/nautilus/radosgw/multisite/
More or less ok so far, some learning curve but that's ok

I can access and upload to buckets at both endpoints with s3 client 
using https - https://ceph01cs1.domain.com and 
https://ceph01cs2.domain.com - all good

Now the problem seems to be when my zones in the zonegroup use https 
endpoints, e.g.

{
     "id": "4c6774fb-01eb-41fe-a74a-c2693f8e69fc",
     "name": "eu",
     "api_name": "eu",
     "is_master": "true",
     "endpoints": [
         "https://ceph01cs1.domain.com:443"
     ],
     "hostnames": [],
     "hostnames_s3website": [],
     "master_zone": "0c203df2-6f31-4ad1-a899-91f85bf34c4e",
     "zones": [
         {
             "id": "0c203df2-6f31-4ad1-a899-91f85bf34c4e",
             "name": "ceph01cs1",
             "endpoints": [
                 "https://ceph01cs1.domain.com:443"
             ],
             "log_meta": "false",
             "log_data": "true",
             "bucket_index_max_shards": 0,
             "read_only": "false",
             "tier_type": "",
             "sync_from_all": "true",
             "sync_from": [],
             "redirect_zone": ""
         },
         {
             "id": "fec1fec8-a3c1-454d-8ed2-2c1da45f9c33",
             "name": "ceph01cs2",
             "endpoints": [
                 "https://ceph01cs2.domain.com:443"
             ],
             "log_meta": "false",
             "log_data": "true",
             "bucket_index_max_shards": 0,
             "read_only": "false",
             "tier_type": "",
             "sync_from_all": "true",
             "sync_from": [],
             "redirect_zone": ""
         }
     ],
     "placement_targets": [
         {
             "name": "default-placement",
             "tags": [],
             "storage_classes": [
                 "STANDARD"
             ]
         }
     ],
     "default_placement": "default-placement",
     "realm_id": "08921dd5-1523-41b6-908f-2f58aa38c969"
}

Meta syncs ok - buckets and users get created, but data doesn't, and 
period can be commited and appears on both clusters
I can also curl between the two clusters over 443
However, data sync gets stuck on 'init':

           realm 08921dd5-1523-41b6-908f-2f58aa38c969 (world)
       zonegroup 4c6774fb-01eb-41fe-a74a-c2693f8e69fc (eu)
            zone 0c203df2-6f31-4ad1-a899-91f85bf34c4e (ceph01cs2)
   metadata sync no sync (zone is master)
       data sync source: fec1fec8-a3c1-454d-8ed2-2c1da45f9c33 (ceph01cs1)
                         init
                         full sync: 128/128 shards
                         full sync: 0 buckets to sync
                         incremental sync: 0/128 shards
                         data is behind on 128 shards
                         behind shards: 
[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127]

I find errors like:
2020-03-31 20:27:11.372 7f60c84e1700  0 RGW-SYNC:data:sync: ERROR: 
failed to init sync, retcode=-16
2020-03-31 20:27:29.548 7f60c84e1700  0 
RGW-SYNC:data:sync:init_data_sync_status: ERROR: failed to read remote 
data log shards
2020-03-31 20:29:48.499 7f60c94e3700  0 RGW-SYNC:meta: ERROR: failed to 
fetch all metadata keys

If I change the endpoints in the zonegroup to plain http, e.g. 
http://ceph01cs1.domain.com:7480 and http://ceph01cs2.domain.com:7480 
then sync starts!

So my question, and I couldn't find any examples of people using https 
to sync.. are https endpoints supported with multisite? and why would 
meta work over https but not data?

Many thanks
Richard