#環境准備
#升級內核
#官網說明 http://docs.ceph.com/docs/master/start/os-recommendations/#linux-kernel
#CentOS7 升級內核
rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org
rpm -Uvh http://www.elrepo.org/elrepo-release-7.0-3.el7.elrepo.noarch.rpm
#安裝kernel最新穩定版
yum --enablerepo=elrepo-kernel install kernel-lt-devel kernel-lt -y
awk -F\' '$1=="menuentry " {print $2}' /etc/grub2.cfg #查看啟動項
grub2-set-default 0 #設置第一行為默認啟動
rpm -e elrepo-release #刪除源
reboot
#uname -r #重啟后查看內核
#4.4.98-1.el7.elrepo.x86_64
###########################
#使用阿里源
rm -f /etc/yum.repos.d/*
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo
sed -i '/aliyuncs.com/d' /etc/yum.repos.d/*.repo #刪除阿里內網地址
#創建ceph源
echo '#阿里ceph源
[ceph]
name=ceph
baseurl=http://mirrors.aliyun.com/ceph/rpm-luminous/el7/x86_64/
gpgcheck=0
[ceph-noarch]
name=cephnoarch
baseurl=http://mirrors.aliyun.com/ceph/rpm-luminous/el7/noarch/
gpgcheck=0
[ceph-source]
name=ceph-source
baseurl=http://mirrors.aliyun.com/ceph/rpm-luminous/el7/SRPMS/
gpgcheck=0
#'>/etc/yum.repos.d/ceph.repo
yum clean all && yum makecache #生成緩存
#關閉selinux、防火牆
systemctl stop firewalld.service
systemctl disable firewalld.service
firewall-cmd --state
sed -i '/^SELINUX=.*/c SELINUX=disabled' /etc/selinux/config
sed -i 's/^SELINUXTYPE=.*/SELINUXTYPE=disabled/g' /etc/selinux/config
grep --color=auto '^SELINUX' /etc/selinux/config
setenforce 0
#時間同步
[[ -f /usr/sbin/ntpdate ]] || { echo "install ntp";yum install ntp -y &> /dev/null; } #若沒NTP則安裝
/usr/sbin/ntpdate ntp6.aliyun.com
echo "*/3 * * * * /usr/sbin/ntpdate ntp6.aliyun.com &> /dev/null" > /tmp/crontab
crontab /tmp/crontab
###########################
#網絡
# #外網規划
# 192.168.0.51 ceph1
#內網規划，寫入hosts
echo '#ceph
192.168.1.101 ceph1
192.168.1.102 ceph2
192.168.1.103 ceph3
192.168.1.104 ceph4
'>>/etc/hosts
#配置hostname、固定ip
Nu=1
hostnamectl set-hostname ceph$Nu
NetName=em1 #網卡名稱
rm -f /etc/sysconfig/network-scripts/ifcfg-$NetName
nmcli con add con-name $NetName ifname $NetName autoconnect yes type ethernet ip4 192.168.1.10$Nu/24 \
ipv4.dns "8.8.8.8" #ipv4.gateway "192.168.1.1"
nmcli connection reload #重新加載網絡
#磁盤(添加2快磁盤)
# [root@ceph01 ~]# lsblk
# NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
# sdb 8:16 0 100G 0 disk
# sdc 8:32 0 100G 0 disk
###########################
#ceph安裝配置
###########################
#全部在ceph1操作
# #Ceph節點簡介
# Mon(Montior)監控節點
# OSD(Object Storage Device)存儲節點
# MDS(Meta Data Server)，Ceph作文件系統用到，本實例不配置
#ceph01作為部署節點
#ceph1 ceph2 ceph3作為Mon
#ceph2 ceph3 ceph4作為OSD
#ssh免密驗證
所有節點執行：
yum install -y sshpass
rm -rf ~/.ssh
ssh-keygen -t rsa -P "" -f ~/.ssh/id_rsa
sshpass -p '123456' ssh-copy-id -o StrictHostKeyChecking=no -i /root/.ssh/id_rsa -p 22 root@ceph1
sshpass -p '123456' ssh-copy-id -o StrictHostKeyChecking=no -i /root/.ssh/id_rsa -p 22 root@ceph2
sshpass -p '123456' ssh-copy-id -o StrictHostKeyChecking=no -i /root/.ssh/id_rsa -p 22 root@ceph3
sshpass -p '123456' ssh-copy-id -o StrictHostKeyChecking=no -i /root/.ssh/id_rsa -p 22 root@ceph4
#以下在 ceph1節點執行
#ceph1 安裝ceph-deploy配置工具
yum install -y ceph-deploy
#創建配置目錄
mkdir /etc/ceph
cd /etc/ceph/
#初始化Mon配置
ceph-deploy new ceph{1,2,3}
#ceph-deploy new --cluster-network 192.168.1.0/24 --public-network 192.168.0.0/24 ceph{1,2,3}
# #修改冗余份數為2，日志大小2G
# #配置網絡,單網卡忽略
echo '
public network = 192.168.0.0/24
cluster network = 192.168.1.0/24
mon_clock_drift_allowed = 2
osd_journal_size = 4086
osd_pool_default_pg_num = 128
osd_pool_default_pgp_num = 128
osd pool default size = 2
osd pool default min size = 1
rbd_default_features = 1
client_quota = true
'>>./ceph.conf
#安裝Ceph
ceph-deploy install ceph1 ceph2 ceph3 ceph4
#yum install -y ceph ceph-radosgw #實際上是安裝這2個rpm
#初始化monitor和key
cd /etc/ceph/
ceph-deploy --overwrite-conf mon create-initial
#創建存儲節點(使用sdb,sdc磁盤)
#lsblk #查看磁盤
#創建osd
ceph-deploy osd create --data /dev/sdb ceph2
ceph-deploy osd create --data /dev/sdb ceph3
ceph-deploy osd create --data /dev/sdb ceph4
ceph-deploy osd create --data /dev/sdc ceph2
ceph-deploy osd create --data /dev/sdc ceph3
ceph-deploy osd create --data /dev/sdc ceph4
#拷貝配置及密鑰
ceph-deploy admin ceph1 ceph2 ceph3 ceph4
chmod 644 /etc/ceph/ceph.client.admin.keyring
#創建mon
ceph-deploy --overwrite-conf mon create ceph1
ceph-deploy --overwrite-conf admin ceph1
ceph-deploy --overwrite-conf mon create ceph2
ceph-deploy --overwrite-conf admin ceph2
ceph-deploy --overwrite-conf mon create ceph3
ceph-deploy --overwrite-conf admin ceph3
#添加mgr
#ceph 12開始，monitor必須添加mgr
ceph-deploy mgr create ceph{1,2,3}:mon_mgr
#ceph-deploy mgr create ceph1:mon_mgr ceph2:mon_mgr ceph3:mon_mgr
#啟用dashboard (在mon節點)
ceph mgr module enable dashboard
#http://ip:7000 訪問dashboard
netstat -antp|grep 7000
# 設置dashboard的ip和端口
# ceph config-key put mgr/dashboard/server_addr 192.168.0.196 #vip地址
# ceph config-key put mgr/dashboard/server_port 7000
# systemctl restart ceph-mgr@ceph1
###########################
#查看相關命令
ceph health
ceph -s
ceph osd tree
ceph df
ceph mon stat
ceph osd stat
ceph pg stat
ceph osd lspools
ceph auth list
###########################
#參考
https://segmentfault.com/a/1190000011581513
http://blog.csdn.net/wylfengyujiancheng/article/details/78461801
https://segmentfault.com/a/1190000011589519
https://www.cnblogs.com/netmouser/p/6876846.html
#中文 文檔
http://docs.ceph.org.cn/man/8/ceph-deploy/
#ceph工作原理和安裝
http://www.jianshu.com/p/25163032f57f
###########################
###########################
#簡單ceph性能測試
#創建測試池mytest
ceph osd pool create mytest 128
rados lspools
# ceph osd pool set mytest size 2 #副本為2
# ceph osd pool delete mytest #刪除
#Rados性能測試(關注 bandwidth帶寬,latency延遲)
rados bench -p mytest 10 write --no-cleanup #寫測試10秒
rados bench -p mytest 10 seq #順序讀
rados bench -p mytest 10 rand #隨機讀
rados -p mytest cleanup #清理測試數據
#rbd塊設備測試
rbd create --size 2G mytest/test1 #創建塊設備映像test1
rbd ls mytest
rbd info mytest/test1
rbd map mytest/test1 #映射塊設備
#/dev/rbd0
#rbd showmapped #查看已映射塊設備
#掛載
mkfs.xfs /dev/rbd0
mkdir -p /mnt/ceph
mount /dev/rbd0 /mnt/ceph/
df -h /mnt/ceph
#測試
rbd bench-write mytest/test1
#默認參數io 4k,線程數16,總寫入1024M, seq順序寫
rbd unmap mytest/test1 #取消塊設備映射
rbd rm mytest/test1 #刪除塊設備映像
#參考
https://www.cnblogs.com/sammyliu/p/5557666.html
###########################
