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Ceph Profile
eph design goals is to build on inexpensive storage medium having high performance, high scalibility, high available, to provide a unified storage, sub-file storage, block storage, object storage. Recently I read the documentation feel quite interesting, and it has been able to provide block storage to openstack, very fit mainstream.
Ceph Deployment
1, the host is ready
Experimental environment for virtual machines on VMare machine experiments, mainly to have an intuitive understanding of Cph.
Step 1: Preparation 5 hosts
IP address of the host name (Hostname)
192.168.1.110 admin-node (the host for management, follow-up ceph-deploy tools to operate on the host)
192.168.1.111 node1 (SCADA node)
192.168.1.112 node2 (osd.0 node)
192.168.1.113 node3 (osd.1 node)
192.168.1.114 client-node (customer service side, the main use mount it ceph cluster provides storage for testing)
Step two: Modify the admin-node node / etc / hosts file, add about content
192.168.1.111 node1
192.168.1.112 node2
192.168.1.113 node3
192.168.1.114 client-node
Description: ceph-deploy tools are host names to communicate with other nodes. Modify the host name of the command is: hostnamectl set-hostname "new name"
third step:
5 hosts were created to store user ceph :( with root privileges, or have root privileges)
Create a user
sudo adduser -d / home / ceph -m ceph
set password
sudo passwd ceph
Setting Account Permissions
echo "ceph ALL = (root) NOPASSWD: ALL" | sudo tee /etc/sudoers.d/ceph
sudo chomod 0440 /etc/sudoers.d/ceph
Run visudo modify suoders file:
The Defaults requiretty line modified to modify Defaults: ceph! requiretty
If you do not make changes ceph-depoy use ssh command will execute an error
2, the configuration admin-node with other nodes without password ssh root access to other nodes.
The first step: Run the admin-node host:
ssh-keygen
:( To illustrate a simple point command is executed directly be determined)
Step two: Copy the key first step to another node
ssh-copy-id ceph @ node1
ssh-copy-id ceph @ node2
ssh-copy-id ceph @ node3
ssh-copy-id ceph @ client-node
Meanwhile modify ~ / .ssh / config file to add about the content:
Host node1
Hostname 192.168.1.111
User ceph
Host node2
Hostname 192.168.1.112
User ceph
Host node3
Hostname 192.168.1.113
User ceph
Host client-node
Hostname 192.168.1.114
User ceph
3, installation ceph-deploy for the admin-node node
The first step: increasing the yum configuration file
sudo vim /etc/yum.repos.d/ceph.repo
Add the following:
[Ceph-noarch]
name = Ceph noarch packages
baseurl = http: //ceph.com/rpm-firefly/el7/noarch
enabled = 1
gpgcheck = 1
type = rpm-md
gpgkey = https: //ceph.com/git/ p = ceph.git; a = blob_plain; f = keys / release.asc?
Step two: Update the software source and follow the ceph-deploy, time synchronization software
sudo yum update && sudo yum install ceph-deploy
sudo yum install ntp ntpupdate ntp-doc
4. Shut down all nodes of firewalls and security options (executed on all nodes) and a number of other steps
sudo systemctl stop firewall.service
sudo setenforce 0
sudo yum install yum-plugin-priorities
Summary: After the steps above preconditions are ready to deploy ceph the next real.
5 to ceph user created earlier to create a directory on the admin-node node
mkdir my-cluster
cd my-cluster
6. Create the cluster
Showing the relationship between the nodes: node1 as the monitoring node, node2, node3 as osd node, admin-node as a management node
Step: Execute the following command to create a cluster node node1 to monitor.
ceph-deploy new node1
After executing this command in the current directory production ceph.conf file, open the file and adds about content:
osd pool default size = 2
Step Two: Using ceph-deploy node installation ceph
ceph install admin-node node1 node2 node3
The third step: initialize the monitor node and collect keyring:
ceph-deploy mon create-initial
6, allocate disk space for the storage node osd process:
ssh node2
sudo mkdir / var / local / osd0
exit
ssh node3
sudo mkdir / var / local / osd1
exit
Then open the other nodes osd process through ceph-deploy admin-node node, and activation.
ceph-deploy osd prepare node2: / var / local / osd0 node3: / var / local / osd1
ceph-deploy osd active node2: / var / local / osd0 node3: / var / local / osd1
Admin-node configuration file node to other nodes synchronize with keyring:
ceph-deploy admin admin-node node1 node2 node3
sudo chmod + r /etc/ceph/ceph.client.admin.keyring
Finally, the command to view the health status of the cluster:
ceph health
If successful you will be prompted: HEALTH_OK
Ceph storage space usage:
1, to prepare client-node
Run by admin-node node:
ceph-deploy install client-node
ceph-deploy admin client-node
2, create a block device image:
rbd create foo --size 4096
The block device ceph provide mapped to client-node
sudo rbd map foo --pool rbd --name client.admin
3, create a file system
sudo mkfs.ext4 -m0 / dev / rbd / foo
4, mount the file system
sudo mkdir / mnt / test
sudo mount / dev / rbd / foo / mnt / test
cd / mnt / test
Finished! ! ! ! ! ! ! ! ! ! ! ! |
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