使用ceph-deploy快速部署ceph

Ceph介绍

Ceph是统一存储系统，支持三种接口:

  • Object:有原生的API，而且也兼容Swift和S3的API

  • mitaka:支持精简配置、快照、克隆cephceph

  • File:Posix接口，支持快照

Ceph也是分布式存储系统，它的特点是:

  • 高扩展性：使用普通x86服务器，支持10~1000台服务器，支持TB到PB级的扩展。

  • 高可靠性：没有单点故障，多数据副本，自动管理，自动修复。

  • 高性能：数据分布均衡，并行化度高。对于objects storage和mitaka storage,不需要元数据服务器。

_images/cepharch.png

ceph架构

环境准备

实验环境主机集群(CentOS 7.3)

主机

IP

功能

node-1

10.188.169.121

mon,osd-0

node-2

10.188.169.120

osd-1

node-3

10.188.169.122

osd-2

完成状态:

[root@node-1 ceph-deploy]# ceph -s
    cluster 4b5f675e-f8b0-4790-abf6-82804c6afbd1
     health HEALTH_OK
     monmap e1: 1 mons at {node-1=10.188.169.121:6789/0}
            election epoch 3, quorum 0 node-1
     osdmap e15: 3 osds: 3 up, 3 in
            flags sortbitwise,require_jewel_osds
      pgmap v28: 64 pgs, 1 pools, 0 bytes data, 0 objects
            100 MB used, 284 GB / 284 GB avail
                  64 active+clean
[root@node-1 ceph-deploy]# ceph osd tree
ID WEIGHT  TYPE NAME       UP/DOWN REWEIGHT PRIMARY-AFFINITY
-1 0.27809 root default
-2 0.09270     host node-1
 0 0.09270         osd.0        up  1.00000          1.00000
-3 0.09270     host node-2
 1 0.09270         osd.1        up  1.00000          1.00000
-4 0.09270     host node-3
 2 0.09270         osd.2        up  1.00000          1.00000

在所有节点上:

  • 更新hosts信息

echo "10.188.169.121 node-1"
echo "10.188.169.120 node-2"
echo "10.188.169.122 node-3"

  • 配置ssh信任

ssh-copy-id node-1
ssh-copy-id node-2
ssh-copy-id node-3

  • 配置YUM

    • 安装启用EPEL

    sudo yum install -y yum-utils && sudo yum-config-manager --add-repo https://dl.fedoraproject.org/pub/epel/7/x86_64/ && sudo yum install --nogpgcheck -y epel-release && sudo rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7 && sudo rm /etc/yum.repos.d/dl.fedoraproject.org*

    • 创建 /etc/yum.repos.d/ceph.repo

    [ceph-noarch]
name=Ceph noarch packages
baseurl=http://download.ceph.com/rpm-jewel/el7/noarch
enabled=1
gpgcheck=1
type=rpm-md
gpgkey=https://download.ceph.com/keys/release.asc

    • 更新软件库并安装 ceph-deploy

    sudo yum update && sudo yum install ceph-deploy

    • 同步各个节点时间

    yum -y install ceph ceph-radosgw ntp ntpdate
ntpdate  -s cn.pool.ntp.org
echo ntpdate  -s cn.pool.ntp.org>> /etc/rc.d/rc.local
echo "01 01 * * * /usr/sbin/ntpdate -s cn.pool.ntp.org    >> /dev/null 2>&1" >> /etc/crontab

    • 清空防火墙策略,关闭selinux

    iptables -F
iptables -X
sed -i 's/SELINUX=.*/SELINUX=disabled/' /etc/selinux/config   #重启机器
systemctl stop firewalld
systemctl disable firewalld

部署ceph集群

环境清理

如果之前部署失败了，不必删除ceph客户端，或者重新搭建虚拟机，只需要在每个节点上执行如下指令即可将环境清理至刚安装完ceph客户端时的状态！强烈建议在旧集群上搭建之前清理干净环境，否则会发生各种异常情况:

ps aux|grep ceph |awk '{print $2}'|xargs kill -9
ps -ef|grep ceph
#确保此时所有ceph进程都已经关闭！如果没有关闭，多执行几次。
umount /var/lib/ceph/osd/*
rm -rf /var/lib/ceph/osd/*
rm -rf /var/lib/ceph/mon/*
rm -rf /var/lib/ceph/mds/*
rm -rf /var/lib/ceph/bootstrap-mds/*
rm -rf /var/lib/ceph/bootstrap-osd/*
rm -rf /var/lib/ceph/bootstrap-mon/*
rm -rf /var/lib/ceph/tmp/*
rm -rf /etc/ceph/*
rm -rf /var/run/ceph/*

用下列命令可以连 Ceph 安装包一起清除:

ceph-deploy purge node-1 node-2 node-3

在部署节点(node-1)上创建ceph集群

  • 创建部署目录

mkdir ceph-deploy
cd ceph-deploy
ceph-deploy new node-1
[root@node-1 ceph-deploy]# ceph-deploy new node-1
[ceph_deploy.conf][DEBUG ] found configuration file at: /root/.cephdeploy.conf
[ceph_deploy.cli][INFO  ] Invoked (1.5.38): /bin/ceph-deploy new node-1
[ceph_deploy.cli][INFO  ] ceph-deploy options:
[ceph_deploy.cli][INFO  ]  username                      : None
[ceph_deploy.cli][INFO  ]  func                          : <function new at 0x1567578>
[ceph_deploy.cli][INFO  ]  verbose                       : False
[ceph_deploy.cli][INFO  ]  overwrite_conf                : False
[ceph_deploy.cli][INFO  ]  quiet                         : False
[ceph_deploy.cli][INFO  ]  cd_conf                       : <ceph_deploy.conf.cephdeploy.Conf instance at 0x15cba28>
[ceph_deploy.cli][INFO  ]  cluster                       : ceph
[ceph_deploy.cli][INFO  ]  ssh_copykey                   : True
[ceph_deploy.cli][INFO  ]  mon                           : ['node-1']
[ceph_deploy.cli][INFO  ]  public_network                : None
[ceph_deploy.cli][INFO  ]  ceph_conf                     : None
[ceph_deploy.cli][INFO  ]  cluster_network               : None
[ceph_deploy.cli][INFO  ]  default_release               : False
[ceph_deploy.cli][INFO  ]  fsid                          : None
[ceph_deploy.new][DEBUG ] Creating new cluster named ceph
[ceph_deploy.new][INFO  ] making sure passwordless SSH succeeds
[node-1][DEBUG ] connected to host: node-1
[node-1][DEBUG ] detect platform information from remote host
[node-1][DEBUG ] detect machine type
[node-1][DEBUG ] find the location of an executable
[node-1][INFO  ] Running command: /usr/sbin/ip link show
[node-1][INFO  ] Running command: /usr/sbin/ip addr show
[node-1][DEBUG ] IP addresses found: [u'10.188.169.121']
[ceph_deploy.new][DEBUG ] Resolving host node-1
[ceph_deploy.new][DEBUG ] Monitor node-1 at 10.188.169.121
[ceph_deploy.new][DEBUG ] Monitor initial members are ['node-1']
[ceph_deploy.new][DEBUG ] Monitor addrs are ['10.188.169.121']
[ceph_deploy.new][DEBUG ] Creating a random mon key...
[ceph_deploy.new][DEBUG ] Writing monitor keyring to ceph.mon.keyring...
[ceph_deploy.new][DEBUG ] Writing initial config to ceph.conf...

See also

创建ceph集群

目录内容:

[root@node-1 ceph-deploy]# ll
-rw-r--r-- 1 root root    284 Jul 28 03:01 ceph.conf
-rw-r--r-- 1 root root 249470 Jul 28 03:24 ceph-deploy-ceph.log
-rw------- 1 root root     73 Jul 28 03:00 ceph.mon.keyring

根据自己的IP配置向ceph.conf中添加public_network，并稍微增大mon之间时差允许范围(默认为0.05s，现改为2s),并修改默认副本数

echo public_network = 10.188.169.0/24 >>ceph.conf
echo mon_clock_drift_allowed = 2 >> ceph.conf
echo osd_pool_default_size =  2 >> ceph.conf

[root@node-1 ceph-deploy]# cat ceph.conf
[global]
fsid = 4b5f675e-f8b0-4790-abf6-82804c6afbd1
mon_initial_members = node-1
mon_host = 10.188.169.121
auth_cluster_required = cephx
auth_service_required = cephx
auth_client_required = cephx
osd_pool_default_size = 2
public_network = 10.188.169.0/24
mon_clock_drift_allowed = 2

  • 安装ceph

ceph-deploy install node-1 node-2 node-3

Note

如果你执行过 ceph-deploy purge ，你必须重新执行这一步来安装 Ceph

Note

安装过程有时会报错 [ceph_deploy][ERROR ] RuntimeError: NoSectionError: No section: ‘ceph’,在报错节点yum -y remove ceph-release删除ceph

  • 部署mon节点

ceph-deploy mon create-initial

[root@node-1 ceph-deploy]# ceph-deploy mon create-initial
[ceph_deploy.conf][DEBUG ] found configuration file at: /root/.cephdeploy.conf
[ceph_deploy.cli][INFO  ] Invoked (1.5.38): /bin/ceph-deploy mon create-initial
[ceph_deploy.cli][INFO  ] ceph-deploy options:
[ceph_deploy.cli][INFO  ]  username                      : None
[ceph_deploy.cli][INFO  ]  verbose                       : False
[ceph_deploy.cli][INFO  ]  overwrite_conf                : False
[ceph_deploy.cli][INFO  ]  subcommand                    : create-initial
[ceph_deploy.cli][INFO  ]  quiet                         : False
[ceph_deploy.cli][INFO  ]  cd_conf                       : <ceph_deploy.conf.cephdeploy.Conf instance at 0x29cc440>
[ceph_deploy.cli][INFO  ]  cluster                       : ceph
[ceph_deploy.cli][INFO  ]  func                          : <function mon at 0x29c1668>
[ceph_deploy.cli][INFO  ]  ceph_conf                     : None
[ceph_deploy.cli][INFO  ]  default_release               : False
[ceph_deploy.cli][INFO  ]  keyrings                      : None
[ceph_deploy.mon][DEBUG ] Deploying mon, cluster ceph hosts node-1
[ceph_deploy.mon][DEBUG ] detecting platform for host node-1 ...
[node-1][DEBUG ] connected to host: node-1
[node-1][DEBUG ] detect platform information from remote host
[node-1][DEBUG ] detect machine type
[node-1][DEBUG ] find the location of an executable
[ceph_deploy.mon][INFO  ] distro info: CentOS Linux 7.3.1611 Core
[node-1][DEBUG ] determining if provided host has same hostname in remote
[node-1][DEBUG ] get remote short hostname
[node-1][DEBUG ] deploying mon to node-1
[node-1][DEBUG ] get remote short hostname
[node-1][DEBUG ] remote hostname: node-1
[node-1][DEBUG ] write cluster configuration to /etc/ceph/{cluster}.conf
[node-1][DEBUG ] create the mon path if it does not exist
[node-1][DEBUG ] checking for done path: /var/lib/ceph/mon/ceph-node-1/done
[node-1][DEBUG ] done path does not exist: /var/lib/ceph/mon/ceph-node-1/done
[node-1][INFO  ] creating keyring file: /var/lib/ceph/tmp/ceph-node-1.mon.keyring
[node-1][DEBUG ] create the monitor keyring file
[node-1][INFO  ] Running command: ceph-mon --cluster ceph --mkfs -i node-1 --keyring /var/lib/ceph/tmp/ceph-node-1.mon.keyring --setuser 167 --setgroup 167
[node-1][DEBUG ] ceph-mon: renaming mon.noname-a 10.188.169.121:6789/0 to mon.node-1
[node-1][DEBUG ] ceph-mon: set fsid to 4b5f675e-f8b0-4790-abf6-82804c6afbd1
[node-1][DEBUG ] ceph-mon: created monfs at /var/lib/ceph/mon/ceph-node-1 for mon.node-1
[node-1][INFO  ] unlinking keyring file /var/lib/ceph/tmp/ceph-node-1.mon.keyring
[node-1][DEBUG ] create a done file to avoid re-doing the mon deployment
[node-1][DEBUG ] create the init path if it does not exist
[node-1][INFO  ] Running command: systemctl enable ceph.target
[node-1][INFO  ] Running command: systemctl enable ceph-mon@node-1
[node-1][WARNIN] Created symlink from /etc/systemd/system/ceph-mon.target.wants/ceph-mon@node-1.service to /usr/lib/systemd/system/ceph-mon@.service.
[node-1][INFO  ] Running command: systemctl start ceph-mon@node-1
[node-1][INFO  ] Running command: ceph --cluster=ceph --admin-daemon /var/run/ceph/ceph-mon.node-1.asok mon_status
[node-1][DEBUG ] ********************************************************************************
[node-1][DEBUG ] status for monitor: mon.node-1
[node-1][DEBUG ] {
[node-1][DEBUG ]   "election_epoch": 3,
[node-1][DEBUG ]   "extra_probe_peers": [],
[node-1][DEBUG ]   "monmap": {
[node-1][DEBUG ]     "created": "2017-07-28 03:17:39.758385",
[node-1][DEBUG ]     "epoch": 1,
[node-1][DEBUG ]     "fsid": "4b5f675e-f8b0-4790-abf6-82804c6afbd1",
[node-1][DEBUG ]     "modified": "2017-07-28 03:17:39.758385",
[node-1][DEBUG ]     "mons": [
[node-1][DEBUG ]       {
[node-1][DEBUG ]         "addr": "10.188.169.121:6789/0",
[node-1][DEBUG ]         "name": "node-1",
[node-1][DEBUG ]         "rank": 0
[node-1][DEBUG ]       }
[node-1][DEBUG ]     ]
[node-1][DEBUG ]   },
[node-1][DEBUG ]   "name": "node-1",
[node-1][DEBUG ]   "outside_quorum": [],
[node-1][DEBUG ]   "quorum": [
[node-1][DEBUG ]     0
[node-1][DEBUG ]   ],
[node-1][DEBUG ]   "rank": 0,
[node-1][DEBUG ]   "state": "leader",
[node-1][DEBUG ]   "sync_provider": []
[node-1][DEBUG ] }
[node-1][DEBUG ] ********************************************************************************
[node-1][INFO  ] monitor: mon.node-1 is running
[node-1][INFO  ] Running command: ceph --cluster=ceph --admin-daemon /var/run/ceph/ceph-mon.node-1.asok mon_status
[ceph_deploy.mon][INFO  ] processing monitor mon.node-1
[node-1][DEBUG ] connected to host: node-1
[node-1][DEBUG ] detect platform information from remote host
[node-1][DEBUG ] detect machine type
[node-1][DEBUG ] find the location of an executable
[node-1][INFO  ] Running command: ceph --cluster=ceph --admin-daemon /var/run/ceph/ceph-mon.node-1.asok mon_status
[ceph_deploy.mon][INFO  ] mon.node-1 monitor has reached quorum!
[ceph_deploy.mon][INFO  ] all initial monitors are running and have formed quorum
[ceph_deploy.mon][INFO  ] Running gatherkeys...
[ceph_deploy.gatherkeys][INFO  ] Storing keys in temp directory /tmp/tmp1NWwV3
[node-1][DEBUG ] connected to host: node-1
[node-1][DEBUG ] detect platform information from remote host
[node-1][DEBUG ] detect machine type
[node-1][DEBUG ] get remote short hostname
[node-1][DEBUG ] fetch remote file
[node-1][INFO  ] Running command: /usr/bin/ceph --connect-timeout=25 --cluster=ceph --admin-daemon=/var/run/ceph/ceph-mon.node-1.asok mon_status
[node-1][INFO  ] Running command: /usr/bin/ceph --connect-timeout=25 --cluster=ceph --name mon. --keyring=/var/lib/ceph/mon/ceph-node-1/keyring auth get client.admin
[node-1][INFO  ] Running command: /usr/bin/ceph --connect-timeout=25 --cluster=ceph --name mon. --keyring=/var/lib/ceph/mon/ceph-node-1/keyring auth get client.bootstrap-mds
[node-1][INFO  ] Running command: /usr/bin/ceph --connect-timeout=25 --cluster=ceph --name mon. --keyring=/var/lib/ceph/mon/ceph-node-1/keyring auth get client.bootstrap-mgr
[node-1][INFO  ] Running command: /usr/bin/ceph --connect-timeout=25 --cluster=ceph --name mon. --keyring=/var/lib/ceph/mon/ceph-node-1/keyring auth get-or-create client.bootstrap-mgr mon allow profile bootstrap-mgr
[node-1][INFO  ] Running command: /usr/bin/ceph --connect-timeout=25 --cluster=ceph --name mon. --keyring=/var/lib/ceph/mon/ceph-node-1/keyring auth get client.bootstrap-osd
[node-1][INFO  ] Running command: /usr/bin/ceph --connect-timeout=25 --cluster=ceph --name mon. --keyring=/var/lib/ceph/mon/ceph-node-1/keyring auth get client.bootstrap-rgw
[ceph_deploy.gatherkeys][INFO  ] Storing ceph.client.admin.keyring
[ceph_deploy.gatherkeys][INFO  ] Storing ceph.bootstrap-mds.keyring
[ceph_deploy.gatherkeys][INFO  ] Storing ceph.bootstrap-mgr.keyring
[ceph_deploy.gatherkeys][INFO  ] keyring 'ceph.mon.keyring' already exists
[ceph_deploy.gatherkeys][INFO  ] Storing ceph.bootstrap-osd.keyring
[ceph_deploy.gatherkeys][INFO  ] Storing ceph.bootstrap-rgw.keyring
[ceph_deploy.gatherkeys][INFO  ] Destroy temp directory /tmp/tmp1NWwV3

  • 查看集群状态

[root@node-1 ceph-deploy]# ceph -s
    cluster 4b5f675e-f8b0-4790-abf6-82804c6afbd1
     health HEALTH_ERR
            no osds
     monmap e1: 1 mons at {node-1=10.188.169.121:6789/0}
            election epoch 3, quorum 0 node-1
     osdmap e1: 0 osds: 0 up, 0 in
            flags sortbitwise,require_jewel_osds
      pgmap v2: 64 pgs, 1 pools, 0 bytes data, 0 objects
            0 kB used, 0 kB / 0 kB avail
                  64 creating

添加OSD

See also

ceph-deploy-osd

查看可用磁盘:

ceph-deploy disk list

删除分区表，以用于 Ceph:

ceph-deploy disk zap node-1:vdb node-2:vdb node-2:vdc node-3:vdb

添加osd到集群:

ceph-deploy --overwrite-conf osd prepare node-1:/dev/vdb node-2:/dev/vdb node-3:/dev/vdb

查看集群状态:

    [root@node-1 ceph-deploy]# ceph -s
cluster 4b5f675e-f8b0-4790-abf6-82804c6afbd1
 health HEALTH_OK
 monmap e1: 1 mons at {node-1=10.188.169.121:6789/0}
        election epoch 3, quorum 0 node-1
 osdmap e15: 3 osds: 3 up, 3 in
        flags sortbitwise,require_jewel_osds
  pgmap v28: 64 pgs, 1 pools, 0 bytes data, 0 objects
        100 MB used, 284 GB / 284 GB avail
              64 active+clean

其他

如果修改了/etc/ceph/ceph.conf配置文件，采用推送的方式将conf文件推送至各个节点:

ceph-deploy --overwrite-conf config push node-2 node-3

此时，需要重启各个节点的monitor服务,node-1为各个monitor所在节点的主机名:

systemctl restart ceph-mon@node-1.service

0为该节点的OSD的id，可以通过ceph osd tree查看:

systemctl start/stop/restart ceph-osd@0.service

配置Ceph作为块存储设备

配置客户端

  1. 确认客户机内核对RBD的支持

sudo modprobe rbd
echo $?

  1. 配置SSH信任

登录MON节点copy公钥到客户机:

echo "10.188.169.65 mitaka" >>/etc/hosts
ssh-copy-id root@mitaka

  1. 在MON节点上安装ceph程序到客户机[mitaka]上

cd /etc/ceph
ceph-deploy --username root install mitaka

  1. 推送ceph config到客户机

ceph-deploy config push mitaka

  1. 创建用户授予访问rbd存储池权限

ceph df
ceph auth list
ceph auth get-or-create client.rbd mon 'allow r' osd 'allow class-read object_prefix rbd_children, allow rwx pool=rbd'
ceph auth list

  1. 为用户添加密钥

ceph auth get-or-create client.rbd | ssh root@10.188.169.65 sudo tee /etc/ceph/ceph.client.rbd.keyring

  1. 验证用户是否成功添加

ssh root@10.188.169.65
cat /etc/ceph/ceph.client.rbd.keyring >> /etc/ceph/keyring
ceph -s --name client.rbd
[root@mitaka ceph]# ceph -s --name client.rbd
    cluster 772043b4-4110-472f-8015-dda34e85d1de
     health HEALTH_OK
     monmap e1: 3 mons at {mon-1=10.188.169.62:6789/0,osd-1=10.188.169.63:6789/0,osd-2=10.188.169.64:6789/0}
            election epoch 6, quorum 0,1,2 mon-1,osd-1,osd-2
     osdmap e14: 3 osds: 3 up, 3 in
            flags sortbitwise
      pgmap v611: 64 pgs, 1 pools, 0 bytes data, 0 objects
            101 MB used, 284 GB / 284 GB avail
                  64 active+clean

创建ceph块设备

  1. 为rbd池创建1G大小RADOS块设备

rbd craete rbd1 --size 1G -p rbd --name client.rbd

  1. 查看创建情况

rbd ls --name client.rbd
rbd info rbd1 --name client.rbd
[root@mitaka ceph]# rbd info rbd1 --name client.rbd
rbd image 'rbd1':
        size 1024 MB in 256 objects
        order 22 (4096 kB objects)
        mitaka_name_prefix: rbd_data.104074b0dc51
        format: 2
        features: layering, exclusive-lock, object-map, fast-diff, deep-flatten
        flags:

映射ceph块设备

  • 映射块设备到client

rbd map --image rbd1 --name client.rbd

映射时报错：

[root@mitaka ceph]# rbd map --image rbd1 --name client.rbd
rbd: sysfs write failed
RBD image feature set mismatch. You can disable features unsupported by the kernel with "rbd feature disable".
In some cases useful info is found in syslog - try "dmesg | tail" or so.

原因是测试虚拟机 uname -r 3.10.0-327.28.3.el7.x86_64 目前内核版本 3.10仅支持layering可以修改/etc/ceph/ceph.conf添加一行 rbd_default_features = 1 这样之后创建的image 只有这一个feature,或者diable这个rbd镜像的不支持的特性:

rbd feature disable rbd1 exclusive-lock object-map fast-diff deep-flatten

  • 查看被映射的块设备

[root@mitaka ceph]# rbd showmapped --name client.rbd
id pool image snap device
0  rbd  rbd1  -    /dev/rbd0

  • 格式化并挂载使用

[root@mitaka ceph]# fdisk -l /dev/rbd0

Disk /dev/rbd0: 1073 MB, 1073741824 bytes, 2097152 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 4194304 bytes / 4194304 bytes

[root@mitaka ceph]# mkfs.xfs /dev/rbd0
meta-data=/dev/rbd0              isize=256    agcount=9, agsize=31744 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=0        finobt=0
data     =                       bsize=4096   mitakas=262144, imaxpct=25
         =                       sunit=1024   swidth=1024 blks
naming   =version 2              bsize=4096   ascii-ci=0 ftype=0
log      =internal log           bsize=4096   mitakas=2560, version=2
         =                       sectsz=512   sunit=8 blks, lazy-count=1
realtime =none                   extsz=4096   mitakas=0, rtextents=0
[root@mitaka ceph]# mkdir /ceph-rbd1
[root@mitaka ceph]# mount /dev/rbd0 /ceph-rbd1/
[root@mitaka ceph]# df -h /ceph-rbd1/
Filesystem      Size  Used Avail Use% Mounted on
/dev/rbd0      1014M   33M  982M   4% /ceph-rbd1
[root@mitaka ceph]# dd if=/dev/zero of=/ceph-rbd1/test.file bs=1M count=200
200+0 records in
200+0 records out
209715200 bytes (210 MB) copied, 0.135379 s, 1.5 GB/s
[root@mitaka ceph]# ll -sh /ceph-rbd1/test.file
200M -rw-r--r--. 1 root root 200M May 22 03:59 /ceph-rbd1/test.file

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    #!/bin/bash
    function get_nr_processor()
    {
      grep '^processor' /proc/cpuinfo | wc -l
    }
    function get_nr_socket()
    {
      grep 'physical id' /proc/cpuinfo | awk -F: '{
          print $2 | "sort -un"}' | wc -l
    }
    function get_nr_siblings()
    {
      grep 'siblings' /proc/cpuinfo | awk -F: '{
          print $2 | "sort -un"}'
    }
    function get_nr_cores_of_socket()
    {
      grep 'cpu cores' /proc/cpuinfo | awk -F: '{
          print $2 | "sort -un"}'
    }
    echo '===== CPU Topology Table ====='
    echo
    echo '+--------------+---------+-----------+'
    echo '| Processor ID | Core ID | Socket ID |'
    echo '+--------------+---------+-----------+'
    while read line; do
      if [ -z "$line" ]; then
        printf '| %-12s | %-7s | %-9s |\n' $p_id $c_id $s_id
        echo '+--------------+---------+-----------+'
        continue
      fi
      if echo "$line" | grep -q "^processor"; then
        p_id=`echo "$line" | awk -F: '{print $2}' | tr -d ' '`
      fi
      if echo "$line" | grep -q "^core id"; then
        c_id=`echo "$line" | awk -F: '{print $2}' | tr -d ' '`
      fi
      if echo "$line" | grep -q "^physical id"; then
        s_id=`echo "$line" | awk -F: '{print $2}' | tr -d ' '`
      fi
    done < /proc/cpuinfo
    echo
    awk -F: '{
      if ($1 ~ /processor/) {
        gsub(/ /,"",$2);
        p_id=$2;
      } else if ($1 ~ /physical id/){
        gsub(/ /,"",$2);
        s_id=$2;
        arr[s_id]=arr[s_id] " " p_id
      }
    }
    END{
      for (i in arr)
        printf "Socket %s:%s\n", i, arr[i];
    }' /proc/cpuinfo
    echo
    echo '===== CPU Info Summary ====='
    echo
    nr_processor=`get_nr_processor`
    echo "Logical processors: $nr_processor"
    nr_socket=`get_nr_socket`
    echo "Physical socket: $nr_socket"
    nr_siblings=`get_nr_siblings`
    echo "Siblings in one socket: $nr_siblings"
    nr_cores=`get_nr_cores_of_socket`
    echo "Cores in one socket: $nr_cores"
    let nr_cores*=nr_socket
    echo "Cores in total: $nr_cores"
    if [ "$nr_cores" = "$nr_processor" ]; then
      echo "Hyper-Threading: off"
    else
      echo "Hyper-Threading: on"
    fi
    echo
    echo '===== END ====='