A Exemplo do procedimento de instalação manual do Ceph #

O procedimento a seguir mostra os comandos necessários para instalar manualmente o cluster de armazenamento do Ceph.

Gere os segredos das chaves para os serviços do Ceph que você pretende executar. É possível usar o seguinte comando para gerá-los:

python -c "import os ; import struct ; import time; import base64 ; \
 key = os.urandom(16) ; header = struct.pack('<hiih',1,int(time.time()),0,len(key)) ; \
 print base64.b64encode(header + key)"

Adicione as chaves aos chaveiros relacionados. Primeiramente para o client.admin, depois para os monitores e, em seguida, para outros serviços relacionados, como OSD, Object Gateway ou MDS:

ceph-authtool -n client.admin \
 --create-keyring /etc/ceph/ceph.client.admin.keyring \
 --cap mds 'allow *' --cap mon 'allow *' --cap osd 'allow *'
ceph-authtool -n mon. \
 --create-keyring /var/lib/ceph/bootstrap-mon/ceph-osceph-03.keyring \
 --set-uid=0 --cap mon 'allow *'
ceph-authtool -n client.bootstrap-osd \
 --create-keyring /var/lib/ceph/bootstrap-osd/ceph.keyring \
 --cap mon 'allow profile bootstrap-osd'
ceph-authtool -n client.bootstrap-rgw \
 --create-keyring /var/lib/ceph/bootstrap-rgw/ceph.keyring \
 --cap mon 'allow profile bootstrap-rgw'
ceph-authtool -n client.bootstrap-mds \
 --create-keyring /var/lib/ceph/bootstrap-mds/ceph.keyring \
 --cap mon 'allow profile bootstrap-mds'

Crie um monmap, um banco de dados de todos os monitores em um cluster:

monmaptool --create --fsid eaac9695-4265-4ca8-ac2a-f3a479c559b1 \
 /tmp/tmpuuhxm3/monmap
monmaptool --add osceph-02 192.168.43.60 /tmp/tmpuuhxm3/monmap
monmaptool --add osceph-03 192.168.43.96 /tmp/tmpuuhxm3/monmap
monmaptool --add osceph-04 192.168.43.80 /tmp/tmpuuhxm3/monmap

Crie um novo chaveiro e importe as chaves dos chaveiros de admin e dos monitores para lá. Em seguida, use-as para iniciar os monitores:

ceph-authtool --create-keyring /tmp/tmpuuhxm3/keyring \
 --import-keyring /var/lib/ceph/bootstrap-mon/ceph-osceph-03.keyring
ceph-authtool /tmp/tmpuuhxm3/keyring \
 --import-keyring /etc/ceph/ceph.client.admin.keyring
sudo -u ceph ceph-mon --mkfs -i osceph-03 \
 --monmap /tmp/tmpuuhxm3/monmap --keyring /tmp/tmpuuhxm3/keyring
systemctl restart ceph-mon@osceph-03

Verifique o estado dos monitores em systemd:

systemctl show --property ActiveState ceph-mon@osceph-03

Verifique se o Ceph está em execução e relata o status do monitor:

ceph --cluster=ceph \
 --admin-daemon /var/run/ceph/ceph-mon.osceph-03.asok mon_status

Verifique o status dos serviços específicos usando as chaves existentes:

ceph --connect-timeout 5 --keyring /etc/ceph/ceph.client.admin.keyring \
 --name client.admin -f json-pretty status
[...]
ceph --connect-timeout 5 \
 --keyring /var/lib/ceph/bootstrap-mon/ceph-osceph-03.keyring \
 --name mon. -f json-pretty status

Importe o chaveiro dos serviços existentes do Ceph e verifique o status:

ceph auth import -i /var/lib/ceph/bootstrap-osd/ceph.keyring
ceph auth import -i /var/lib/ceph/bootstrap-rgw/ceph.keyring
ceph auth import -i /var/lib/ceph/bootstrap-mds/ceph.keyring
ceph --cluster=ceph \
 --admin-daemon /var/run/ceph/ceph-mon.osceph-03.asok mon_status
ceph --connect-timeout 5 --keyring /etc/ceph/ceph.client.admin.keyring \
 --name client.admin -f json-pretty status

Prepare os discos/partições para os OSDs usando o sistema de arquivos XFS:

ceph-disk -v prepare --fs-type xfs --data-dev --cluster ceph \
 --cluster-uuid eaac9695-4265-4ca8-ac2a-f3a479c559b1 /dev/vdb
ceph-disk -v prepare --fs-type xfs --data-dev --cluster ceph \
 --cluster-uuid eaac9695-4265-4ca8-ac2a-f3a479c559b1 /dev/vdc
[...]

Ative as partições:

ceph-disk -v activate --mark-init systemd --mount /dev/vdb1
ceph-disk -v activate --mark-init systemd --mount /dev/vdc1

No SUSE Enterprise Storage versão 2.1 e versões anteriores, crie os pools padrão:

ceph --connect-timeout 5 --keyring /etc/ceph/ceph.client.admin.keyring \
 --name client.admin osd pool create .users.swift 16 16
ceph --connect-timeout 5 --keyring /etc/ceph/ceph.client.admin.keyring \
 --name client.admin osd pool create .intent-log 16 16
ceph --connect-timeout 5 --keyring /etc/ceph/ceph.client.admin.keyring \
 --name client.admin osd pool create .rgw.gc 16 16
ceph --connect-timeout 5 --keyring /etc/ceph/ceph.client.admin.keyring \
 --name client.admin osd pool create .users.uid 16 16
ceph --connect-timeout 5 --keyring /etc/ceph/ceph.client.admin.keyring \
 --name client.admin osd pool create .rgw.control 16 16
ceph --connect-timeout 5 --keyring /etc/ceph/ceph.client.admin.keyring \
 --name client.admin osd pool create .users 16 16
ceph --connect-timeout 5 --keyring /etc/ceph/ceph.client.admin.keyring \
 --name client.admin osd pool create .usage 16 16
ceph --connect-timeout 5 --keyring /etc/ceph/ceph.client.admin.keyring \
 --name client.admin osd pool create .log 16 16
ceph --connect-timeout 5 --keyring /etc/ceph/ceph.client.admin.keyring \
 --name client.admin osd pool create .rgw 16 16

Crie a chave de instância do Object Gateway com base na chave do protocolo de boot:

ceph --connect-timeout 5 --cluster ceph --name client.bootstrap-rgw \
 --keyring /var/lib/ceph/bootstrap-rgw/ceph.keyring auth get-or-create \
 client.rgw.0dc1e13033d2467eace46270f0048b39 osd 'allow rwx' mon 'allow rw' \
 -o /var/lib/ceph/radosgw/ceph-rgw.rgw_name/keyring

Habilite e inicie o Object Gateway:

systemctl enable ceph-radosgw@rgw.rgw_name
systemctl start ceph-radosgw@rgw.rgw_name

Opcionalmente, crie a chave de instância do MDS com base na chave do protocolo de boot e, em seguida, habilite-o e inicie-o:

ceph --connect-timeout 5 --cluster ceph --name client.bootstrap-mds \
 --keyring /var/lib/ceph/bootstrap-mds/ceph.keyring auth get-or-create \
 mds.mds.rgw_name osd 'allow rwx' mds allow mon \
 'allow profile mds' \
 -o /var/lib/ceph/mds/ceph-mds.rgw_name/keyring
systemctl enable ceph-mds@mds.rgw_name
systemctl start ceph-mds@mds.rgw_name

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