ceph-ansible ============ Ansible playbook for Ceph! Clone me: ```bash git clone https://github.com/ceph/ceph-ansible.git cp vagrant_variables.yml.sample vagrant_variables.yml ``` ## What does it do? General support for: * Monitors * OSDs * MDSs * RGW More details: * Authentication (cephx), this can be disabled. * Supports cluster public and private network. * Monitors deployment. You can easily start with one monitor and then progressively add new nodes. So can deploy one monitor for testing purpose. For production, I recommend to always use an odd number of monitors, 3 tends to be the standard. * Object Storage Daemons. Like the monitors you can start with a certain amount of nodes and then grow this number. The playbook either supports a dedicated device for storing the journal or both journal and OSD data on the same device (using a tiny partition at the beginning of the device). * Metadata daemons. * Collocation. The playbook supports collocating Monitors, OSDs and MDSs on the same machine. * The playbook was validated on Debian Wheezy, Ubuntu 12.04 LTS and CentOS 6.4. * Tested on Ceph Dumpling and Emperor. * A rolling upgrade playbook was written, an upgrade from Dumpling to Emperor was performed and worked. ## Setup with Vagrant Run your virtual machines: ```bash $ vagrant up ... ... ... ____________ < PLAY RECAP > ------------ \ ^__^ \ (oo)\_______ (__)\ )\/\ ||----w | || || mon0 : ok=16 changed=11 unreachable=0 failed=0 mon1 : ok=16 changed=10 unreachable=0 failed=0 mon2 : ok=16 changed=11 unreachable=0 failed=0 osd0 : ok=19 changed=7 unreachable=0 failed=0 osd1 : ok=19 changed=7 unreachable=0 failed=0 osd2 : ok=19 changed=7 unreachable=0 failed=0 rgw : ok=20 changed=17 unreachable=0 failed=0 ``` Check the status: ```bash $ vagrant ssh mon0 -c "sudo ceph -s" cluster 4a158d27-f750-41d5-9e7f-26ce4c9d2d45 health HEALTH_OK monmap e3: 3 mons at {ceph-mon0=192.168.0.10:6789/0,ceph-mon1=192.168.0.11:6789/0,ceph-mon2=192.168.0.12:6789/0}, election epoch 6, quorum 0,1,2 ceph-mon0,ceph-mon1,ceph-mon mdsmap e6: 1/1/1 up {0=ceph-osd0=up:active}, 2 up:standby osdmap e10: 6 osds: 6 up, 6 in pgmap v17: 192 pgs, 3 pools, 9470 bytes data, 21 objects 205 MB used, 29728 MB / 29933 MB avail 192 active+clean ``` To re-run the Ansible provisioning scripts: ```bash $ vagrant provision ``` ## Specifying fsid and secret key in production The Vagrantfile specifies an fsid for the cluster and a secret key for the monitor. If using these playbooks in production, you must generate your own `fsid` in `group_vars/all` and `monitor_secret` in `group_vars/mons`. Those files contain information about how to generate appropriate values for these variables.