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This article introduces how to configure cluster access in ceph. The content is very detailed. Interested friends can use it for reference. I hope it will be helpful to you.

1. The configuration file / etc/ceph/ceph.conf is as follows

[global]

Auth cluster required = cephx

Auth service required = cephx

Auth client required = cephx

; keyring = / etc/ceph/keyring

Ax open files = 131072

Log file = / var/log/ceph/$name.log

Pid file = / var/run/ceph/$name.pid

Osd pool default size = 2

Osd pool default min_size = 1

[mon]

Mon data = / data/$name

; keyring = / data/mon.0/keyring

[mon.0]

Host = ceph-one

Mon addr = 192.168.122.1 pur6789

; [mds]

; [mds.0]

; host = ceph-one

[osd]

Osd data = / data/$name

Osd journal = / data/$name/journal

Osd journal size = 1000

Osd mkfs type = xfs

Devs = / dev/ceph/$name

Osd crush update on start = 0

; keyring = / etc/ceph/keyring

[osd.0]

Host = ceph-one

[osd.1]

Host = ceph-two

[osd.2]

Host = ceph-three

[osd.3]

Host = ceph-four

[osd.4]

Host = ceph-five

[osd.5]

Host = ceph-six

As shown above, all three items in auth cluster required=cepghx are configured as cephx options, and all are configured as none without permission verification.

2. Generate keyring file

Ceph-authtool-create-keyring / data/mon.0/ceph.mon.keyring-gen-key-n mon. -- cap mon 'allow *'

The above command generates the keyring file in / data/mon.0/ceph.mon.keyring. If you do not configure monitor, use the default keyring file / data/mon.0/keyring, where / data/mon.0 is the mon data configuration directory of ceph.conf

Ceph auth get-or-create osd.0 mon 'allow rwx' osd' allow *'- o / data/osd.0/keyring

The above command generates the keyring of osd

Ceph auth get-or-create client.admin mds' allow' osd 'allow *' mon 'allow *' > / etc/ceph/ceph.client.admin.keyring

The above command generates the keyring of client.admin, which should be the access command of rados.

3. Rados uses keyring to access code examples

# include

# include

# include

Rados_t cluster; / / declare cluster handle

Rados_ioctx_t io

Char * poolname = "data"

Char cluster_name [] = "ceph"

Char user_name [] = "client.admin"; / / user name

Uint64_t flags

Char xattr [] = "en_US"

Int err

Char * buf, * st

Size_t buflen, stlen

Char * cmd [2]

Cmd [1] = NULL

Err = rados_create2 (& cluster, cluster_name, user_name, flags); / / create cluster handle

Char fsid [50] = {0}

If (err < 0)

{

Fprintf (stderr, "% s: Couldn't create the cluster handle!% s\ n", argv [0], strerror (- err))

Exit (EXIT_FAILURE)

}

Else

{

Printf ("\ nCreated a cluster handle.\ n")

}

/ / read the configuration file and complete the cluster handle

Err = rados_conf_set (cluster, "mon_host", "127.0.0.1")

Err = rados_conf_set (cluster, "key", "AQDhSK9UeA+nOhAAhA7s2GLdU8seDVMBqK+iwg==")

/ / err = rados_conf_read_file (cluster, "/ etc/ceph/ceph.conf")

If (err < 0)

{

Fprintf (stderr, "% s: cannot read config file:% s\ n", argv [0], strerror (- err))

Exit (EXIT_FAILURE)

}

Else

{

Printf ("\ nRead the config file.\ n")

}

Err = rados_connect (cluster)

Notice the two lines of rados_conf_set code, which I used to compile the command line with ceph_test.c

Gcc ceph_test.c-o ceph_test-lrados

So much for sharing about how to configure cluster access rights in ceph. I hope the above content can be of some help and learn more knowledge. If you think the article is good, you can share it for more people to see.

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