Ceph Filesystem
Accessing your storage space on the Ceph cluster using the Ceph Filesystem, a remote filesystem supporting POSIX semantic.
configuration
Ceph Block Device usage
We saw previously the steps to follow to have a Ceph cluster up and running, with some distributed and protected storage.
Now, it is time to add some services on it to let your applications, VM or servers to access and use this storage.
We will add a block device, a Ceph filesystem and an Object gateway (compatible with OpenStack Swift and Amazon S3)
Now, it is time to add some services on it to let your applications, VM or servers to access and use this storage.
We will add a block device, a Ceph filesystem and an Object gateway (compatible with OpenStack Swift and Amazon S3)
SSH, keys and agent
Detailed tutorial to show you how to securely connect to a remote host using SSH and without beeing prompted by password.
More information on how to enforce more security on your SSH server.
More information on how to enforce more security on your SSH server.
Ceph deployment (building up the cluster)
A quick tutorial on how to deploy a basic Ceph cluster on Ubuntu Linux.
You will learn the basic step to install and configure one distributed file storage using Ceph.
You will learn the basic step to install and configure one distributed file storage using Ceph.
Basic installation of a Linux server
We would like here not to explain in details how to install a Linux server from scratch, but useful tips to customize the installation once the base OS is installed.
Nowadays, installing Linux has became very straight forward, the modern installers just ask you to click next and you're on the go !
Nowadays, installing Linux has became very straight forward, the modern installers just ask you to click next and you're on the go !
SE Linux
Muli-master OpenLDAP with 3 or more nodes
Going from a two-nodes multi-master configuration to one with more than two nodes is not really complex, once you have understood what we do in two nodes configuration :
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In the two nodes configuration, each node has a different ServerID, in N nodes too. To let the local LDAP differentiate between the various masters, the configuration will now list a ServerID directive by node followed by the LDAP URI to connect this LDAP server.
GFS on iSCSI shared storage
| This method, based on software version delivered with CentOS 6.0 use dlm_controld.pcmk and gfs_controld.pcmk, which are special version developped to be used directly by Pacemaker. After upgrading the OS to CentOS 6.2, the RPM providing dlm_controld.pcmk and gfs_controld.pcmk were replaced by cman, wichi provides the standard gfs_controld and dlm_controld. To be use these two with Pacemaker, we need to enable CMAN with Corosync. |
MySQL active-passive cluster
We will use the iSCSI Lun defined in our iSCSI cluster as a shared storage and we will run MySQL in active-passive (fail-over) mode using Pacemaker and Corosync cluster engine.
The cluster will have to connect to the iSCSI target, mount the iSCSI partition on one node and start a MySQL service which has all its data on this partition.
We will need the following resources and resource agents (RA) on this cluster :
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virtual IP → ocf:heartbeat:IPAddr2