1. When not defining a public and cluster network the OSD and MGR nodes do not get recognised
sudo ceph -s
  cluster:
    id:     820f1573-bc4a-4ee0-b702-80ba5ac13c25
    health: HEALTH_WARN
            3 osds down
            3 hosts (3 osds) down
            1 root (3 osds) down
            no active mgr
            too few PGs per OSD (21 < min 30)
 
  services:
    mon: 3 daemons, quorum cs04r-sc-com99-05,cs04r-sc-com99-07,cs04r-sc-com99-08 (age 5m)
    mgr: no daemons active (since 4m)
    osd: 3 osds: 0 up (since 9m), 3 in (since 9m)
 
  data:
    pools:    1 pools, 64 pgs
    objects: 0 objects, 0 B
    usage:   3.0 GiB used, 114 GiB / 117 GiB avail
    pgs:       44 stale+active+clean
                 20 active+clean
This is an issue within the ms_type being async+rdma as the daemons are running:
sudo systemctl status ceph-osd.target
● ceph-osd.target - ceph target allowing to start/stop all ceph-osd@.service instances at once
   Loaded: loaded (/usr/lib/systemd/system/ceph-osd.target; enabled; vendor preset: enabled)
   Active: active since Thu 2019-10-31 08:13:42 GMT; 8min ago

sudo systemctl status ceph-mgr.target
● ceph-mgr.target - ceph target allowing to start/stop all ceph-mgr@.service instances at once
   Loaded: loaded (/usr/lib/systemd/system/ceph-mgr.target; enabled; vendor preset: enabled)
   Active: active since Thu 2019-10-31 08:13:33 GMT; 11min ago

With the config being 
[global]
fsid = 820f1573-bc4a-4ee0-b702-80ba5ac13c25
mon_initial_members = node1, node2, node3
mon_host = xxx.xx.xxx.aa,xxx.xx.xxx.ac, xxx.xx.xxx.ad
auth_cluster_required = cephx
auth_service_required = cephx
auth_client_required = cephx
ms_type = async+rdma
ms_async_rdma_device_name = mlx4_0

From: Liu, Changcheng <changcheng.liu@intel.com>
Sent: 31 October 2019 01:09
To: Mason-Williams, Gabryel (DLSLtd,RAL,LSCI) <gabryel.mason-williams@diamond.ac.uk>
Cc: dev@ceph.io <dev@ceph.io>
Subject: Re: RMDA Bug?
 
>   2) I'll confirm with my colleague that whether cluster network is really used in 14.2.4. We also hit similar problem these days even using TCP async messenger.
[Changcheng]:
1) The problem should be already sovled in 14.2.4. We hit the problem in 14.2.1
2) I'll try to verify your problem when I have time(I'm working on other
affairs). There should be no problem when unifying both public/cluster
network with RDMA device.


On 23:22 Wed 30 Oct, Liu, Changcheng wrote:
> I'm working on master branch and deploy two nodes cluster. Data is transferring over RDMA.
>       [admin@server0 ~]$ sudo ceph daemon osd.0 perf dump AsyncMessenger::RDMAWorker-1
>       {
>           "AsyncMessenger::RDMAWorker-1": {
>               "tx_no_mem": 0,
>               "tx_parital_mem": 0,
>               "tx_failed_post": 0,
>               "tx_chunks": 26966,
>               "tx_bytes": 52789637,
>               "rx_chunks": 26916,
>               "rx_bytes": 52812278,
>               "pending_sent_conns": 0
>           }
>       }
>
> The only difference is that I don’t differentiate public/cluster network in my cluster.
> You can try to make all public/cluster network use RDMA.
> Note:
>   1) If both public/cluster use RDMA, we can’t differentiate them in different subnetwork. This is feature limited. I'm planning to solve it in future)
>   2) I'll confirm with my colleague that whether cluster network is really used in 14.2.4. We also hit similar problem these days even using TCP async messenger.
>
> Below is my cluster's ceph configuration.
> I also attach the systemd patch used in my side.
>       [admin@server0 ~]$ cat /etc/ceph/ceph.conf
>       [global]
>           cluster = ceph
>           fsid = 24280750-d4f7-4d4f-89e4-f95b8fab87ff
>           auth_cluster_required = cephx
>           auth_service_required = cephx
>           auth_client_required = cephx
>      
>           osd pool default size = 2
>           osd pool default min size = 2
>           osd pool default pg num = 64
>           osd pool default pgp num = 128
>      
>           osd pool default crush rule = 0
>           osd crush chooseleaf type = 1
>      
>           mon_allow_pool_delete=true
>           osd_pool_default_pg_autoscale_mode=off
>      
>           ms_type = async+rdma
>           ms_async_rdma_device_name = mlx5_0
>      
>           mon_initial_members = server0
>           mon_host = 172.16.1.4
>      
>       [mon.rdmarhel0]
>           host = server0
>           mon addr = 172.16.1.4
>       [admin@server0 ~]$
>
> B.R.
> Changcheng
>
> On 13:07 Wed 30 Oct, Mason-Williams, Gabryel (DLSLtd,RAL,LSCI) wrote:
> >     1. The current problem is that it still sending data over the ethernet
> >        instead of ib.
> >     2. [global]
> >        fsid=xxxx
> >        mon_initial_members = node1, node2, node3
> >        mon_host = xxx.xx.xxx.ab,xxx.xx.xxx.ac, xxx.xx.xxx.ad
> >        auth_cluster_required = cephx
> >        auth_service_required = cephx
> >        auth_client_required = cephx
> >        public_network = xxx.xx.xxx.0/24
> >        cluster_network = xx.xxx.0.0/16
> >        ms_cluster_type = async+rdma
> >        ms_type = async+rdma
> >        ms_public_type = async+posix
> >        [mgr]
> >        ms_type = async+posix
> >     3. The ceph cluster is deployed using ceph-deploy then once up all of
> >        the daemons are turned off the rdma cluster config is then sent
> >        around then once that is complete the daemons are turned back on.
> >        The ulimit is set to unlimited, LimitMEMLOCK=infinity is set on the
> >        ceph-disk@.service, ceph-mds@.service, ceph-mon@.service,
> >        ceph-osd@.service, ceph-radosgw@.service, aswell as
> >        PrivateDevices=no on ceph-mds@.service, ceph-mon@.service and
> >        ceph-radosgw@.service. The ethernet mtu is set to 1000
> >      __________________________________________________________________
> >
> >    From: Liu, Changcheng <changcheng.liu@intel.com>
> >    Sent: 30 October 2019 12:24
> >    To: Mason-Williams, Gabryel (DLSLtd,RAL,LSCI)
> >    <gabryel.mason-williams@diamond.ac.uk>
> >    Cc: dev@ceph.io <dev@ceph.io>
> >    Subject: Re: RMDA Bug?
> >
> >    1. What's the problem do you hit when using RDMA in 14.2.4? Any log
> >    shows the error?
> >    2. What's your ceph.conf?
> >    3. How do you deploy the ceph cluster? RDMA need lock some memory. So,
> >    it needs change some system configuration to meet with this
> >    requirement?
> >    On 11:21 Wed 30 Oct, Gabryel Mason-Williams wrote:
> >    > Liu, Changcheng wrote:
> >    > > On 07:31 Mon 28 Oct, Mason-Williams, Gabryel (DLSLtd,RAL,LSCI)
> >    wrote:
> >    > > >     I am using ceph version 12.2.8
> >    > > >     (ae699615bac534ea496ee965ac6192cb7e0e07c0) luminous (stable).
> >    > > >
> >    > > >     I have not checked the master branch do you think this is an
> >    issue in
> >    > > >     luminous that has been removed in later versions?      I
> >    haven't hit problem
> >    > > on master branch. Ceph/RDMA changed a lot
> >    > >       from luminous to master branch.
> >    > >
> >    > >       Is below configuration really needed in luminous/ceph.conf?
> >    > > >     ms_async_rdma_local_gid = xxxx          On master branch,
> >    this
> >    > > parameter is not needed at all.
> >    > > B.R.
> >    > > Changcheng
> >    > > >
> >    __________________________________________________________________
> >    >
> >    > Thanks, the issue of the OSD's falling over seems to have gone away
> >    updating to Nautilus 14.2.4. However, I am still unable to get it to
> >    properly communicate over RDMA even with removing
> >    ms_async_rdma_local_gid.
> >    > _______________________________________________
> >    > Dev mailing list -- dev@ceph.io
> >    > To unsubscribe send an email to dev-leave@ceph.io
> >
> >
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> From 40fa0d7096364b410e8242c46967029fb949876a Mon Sep 17 00:00:00 2001
> From: Changcheng Liu <changcheng.liu@aliyun.com>
> Date: Tue, 23 Jul 2019 18:50:57 +0800
> Subject: [PATCH] rdma systemd: grant access to /dev and unlimit mem
>
> Signed-off-by: Changcheng Liu <changcheng.liu@aliyun.com>
>
> diff --git a/systemd/ceph-fuse@.service.in b/systemd/ceph-fuse@.service.in
> index d603042b12..ff2e9072f6 100644
> --- a/systemd/ceph-fuse@.service.in
> +++ b/systemd/ceph-fuse@.service.in
> @@ -12,6 +12,7 @@ ExecStart=/usr/bin/ceph-fuse -f --cluster ${CLUSTER} %I
>  LockPersonality=true
>  MemoryDenyWriteExecute=true
>  NoNewPrivileges=true
> +LimitMEMLOCK=infinity
>  # ceph-fuse requires access to /dev fuse device
>  PrivateDevices=no
>  ProtectControlGroups=true
> diff --git a/systemd/ceph-mds@.service.in b/systemd/ceph-mds@.service.in
> index 39a2e63105..0e58dfeeea 100644
> --- a/systemd/ceph-mds@.service.in
> +++ b/systemd/ceph-mds@.service.in
> @@ -14,7 +14,8 @@ ExecReload=/bin/kill -HUP $MAINPID
>  LockPersonality=true
>  MemoryDenyWriteExecute=true
>  NoNewPrivileges=true
> -PrivateDevices=yes
> +LimitMEMLOCK=infinity
> +PrivateDevices=no
>  ProtectControlGroups=true
>  ProtectHome=true
>  ProtectKernelModules=true
> diff --git a/systemd/ceph-mgr@.service.in b/systemd/ceph-mgr@.service.in
> index c98f6378b9..682c7ecef3 100644
> --- a/systemd/ceph-mgr@.service.in
> +++ b/systemd/ceph-mgr@.service.in
> @@ -18,7 +18,8 @@ LockPersonality=true
>  MemoryDenyWriteExecute=false
> 
>  NoNewPrivileges=true
> -PrivateDevices=yes
> +LimitMEMLOCK=infinity
> +PrivateDevices=no
>  ProtectControlGroups=true
>  ProtectHome=true
>  ProtectKernelModules=true
> diff --git a/systemd/ceph-mon@.service.in b/systemd/ceph-mon@.service.in
> index c95fcabb26..51854fad96 100644
> --- a/systemd/ceph-mon@.service.in
> +++ b/systemd/ceph-mon@.service.in
> @@ -21,7 +21,8 @@ LockPersonality=true
>  MemoryDenyWriteExecute=true
>  # Need NewPrivileges via `sudo smartctl`
>  NoNewPrivileges=false
> -PrivateDevices=yes
> +LimitMEMLOCK=infinity
> +PrivateDevices=no
>  ProtectControlGroups=true
>  ProtectHome=true
>  ProtectKernelModules=true
> diff --git a/systemd/ceph-osd@.service.in b/systemd/ceph-osd@.service.in
> index 1b5c9c82b8..06c20d7c83 100644
> --- a/systemd/ceph-osd@.service.in
> +++ b/systemd/ceph-osd@.service.in
> @@ -16,6 +16,8 @@ LockPersonality=true
>  MemoryDenyWriteExecute=true
>  # Need NewPrivileges via `sudo smartctl`
>  NoNewPrivileges=false
> +LimitMEMLOCK=infinity
> +PrivateDevices=no
>  ProtectControlGroups=true
>  ProtectHome=true
>  ProtectKernelModules=true
> diff --git a/systemd/ceph-radosgw@.service.in b/systemd/ceph-radosgw@.service.in
> index 7e3ddf6c04..fe1a6b9159 100644
> --- a/systemd/ceph-radosgw@.service.in
> +++ b/systemd/ceph-radosgw@.service.in
> @@ -13,7 +13,8 @@ ExecStart=/usr/bin/radosgw -f --cluster ${CLUSTER} --name client.%i --setuser ce
>  LockPersonality=true
>  MemoryDenyWriteExecute=true
>  NoNewPrivileges=true
> -PrivateDevices=yes
> +LimitMEMLOCK=infinity
> +PrivateDevices=no
>  ProtectControlGroups=true
>  ProtectHome=true
>  ProtectKernelModules=true
> diff --git a/systemd/ceph-volume@.service b/systemd/ceph-volume@.service
> index c21002cecb..e2d1f67b85 100644
> --- a/systemd/ceph-volume@.service
> +++ b/systemd/ceph-volume@.service
> @@ -9,6 +9,7 @@ KillMode=none
>  Environment=CEPH_VOLUME_TIMEOUT=10000
>  ExecStart=/bin/sh -c 'timeout $CEPH_VOLUME_TIMEOUT /usr/sbin/ceph-volume-systemd %i'
>  TimeoutSec=0
> +LimitMEMLOCK=infinity
> 
>  [Install]
>  WantedBy=multi-user.target
> --
> 2.17.1
>

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> Dev mailing list -- dev@ceph.io
> To unsubscribe send an email to dev-leave@ceph.io

 

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