Learning Blog

預定調和

安裝和使用 Ceph

| Comments

環境

ubuntu 14.04 LTS

安裝

把 ceph 的 package 加入
wget -q -O- https://raw.github.com/ceph/ceph/master/keys/release.asc | sudo apt-key add -
echo deb http://ceph.com/debian/ $(lsb_release -sc) main | sudo tee /etc/apt/sources.list.d/ceph.list

更新 index 和安裝 ceph
sudo apt-get update && sudo apt-get install ceph

建立設定檔

vim /etc/ceph/ceph.conf

[osd]
    osd journal size = 1000
    filestore xattr use omap = true

[mon.a]

    host = {hostname}
    mon addr = {ip-address}:6789

[osd.0]
    host = {hostname}

[osd.1]
    host = {hostname}

[mds.a]
    host = {hostname}

建立資料夾

sudo mkdir /var/lib/ceph/osd/ceph-0
sudo mkdir /var/lib/ceph/osd/ceph-1
sudo mkdir /var/lib/ceph/mon/ceph-a
sudo mkdir /var/lib/ceph/mds/ceph-a

cd /etc/ceph
sudo mkcephfs -a -c /etc/ceph/ceph.conf -k ceph.keyring

使用

根據官網的安裝方式很簡單，但是要啟動的時候遇到一些問題，下面列了幾個遇到的問題。

Error ENOENT: osd.0 does not exist.  create it before updating the crush map
ceph osd create

ceph health
HEALTH_WARN 384 pgs incomplete; 384 pgs stuck inactive; 384 pgs stuck unclean
ceph pg dump_stuck stale && ceph pg dump_stuck inactive && ceph pg dump_stuck unclean

HEALTH_WARN 384 pgs incomplete; 384 pgs stale; 384 pgs stuck inactive; 384 pgs stuck unclean; 35 requests are blocked > 32 sec

HEALTH_WARN 384 pgs incomplete; 384 pgs stuck inactive; 384 pgs stuck unclean; 35 requests are blocked > 32 sec; mon.a low disk space

Comments