Ubuntu 16.04快速安装Ceph集群

来源：Linux社区  作者：zolo
本篇文章来源于 Linux公社网站(www.linuxidc.com)  原文链接：http://www.linuxidc.com/Linux/2016-09/135261.htm

Ubuntu 16.04快速安装Ceph集群

准备工作

1.假设集群: 选一台作管理机 注意: ceph集群引用hostname,而非ip. 172.17.4.16 linuxidc16 #hostname必须是linuxidc16 172.17.4.17 linuxidc17 #hostname必须是linuxidc17 172.17.4.18 linuxidc18 #hostname必须是linuxidc18 172.17.4.19 linuxidc19 #hostname必须是linuxidc19, 选作管理机 172.17.4.20 linuxidc20 #hostname必须是linuxidc20 172.17.4.21 linuxidc21 #hostname必须是linuxidc21 172.17.4.22 linuxidc22 #hostname必须是linuxidc22

2.安装用户 注意: 建议不要使用"ceph",因为"apt install ceph"需要使用ceph. 用root最省事 ^_^ root@linuxidc19:~# ssh-keygen #创建安装用rsa,安装完记得删除

root@linuxidc19:~# less .ssh/id_rsa.pub ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDZAQ8ikono13kGzRLpyx1BCRfzICieEKg27WABW+2eFkYXmbvzLSu8XkmC3a0x7M0ADd2aW2FGv8ZtxPgHMRFzyaeoXwGZUFU5zmd9CASglHibKlWzdUgl5sW/DSdSxFYs+ooQvZcKSMmbFYlo70Ndv5kHja2FEMKnLexJpox4fFb9Rv1KEez0p1j28iICc3nHXLAZigezKkaFiv/Wfk/g59nk6ZCNAr1UnDvTdQOnVTIu6Q6UkpoiDx3+R5oeWRynI2l6T/bhrMpubO5PaluFKvas0DF3eGZLf2XQPR8sYzt7PkOGC1QANi7D11UxTqurZF8Meb0LdH0KEqE1kH7z root@cadmin

# 在各台机执行,authorized_keys必须是600 mkdir /root/.ssh echo -n 'ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDZAQ8ikono13kGzRLpyx1BCRfzICieEKg27WABW+2eFkYXmbvzLSu8XkmC3a0x7M0ADd2aW2FGv8ZtxPgHMRFzyaeoXwGZUFU5zmd9CASglHibKlWzdUgl5sW/DSdSxFYs+ooQvZcKSMmbFYlo70Ndv5kHja2FEMKnLexJpox4fFb9Rv1KEez0p1j28iICc3nHXLAZigezKkaFiv/Wfk/g59nk6ZCNAr1UnDvTdQOnVTIu6Q6UkpoiDx3+R5oeWRynI2l6T/bhrMpubO5PaluFKvas0DF3eGZLf2XQPR8sYzt7PkOGC1QANi7D11UxTqurZF8Meb0LdH0KEqE1kH7z' > /root/.ssh/authorized_keys && chmod 600 /root/.ssh/authorized_keys

测试用户     #在linuxidc19无密ssh     for node in 16 17 18 19 20 21 22; do     ssh linuxidc$node echo 123;     done;

    #确认yes     The authenticity of host 'linuxidc22 (172.17.4.22)' can't be established.     ECDSA key fingerprint is SHA256:6S9mp0m8bV15bKX9RugP2CflINUvxORw82yCwJqVyrE.     Are you sure you want to continue connecting (yes/no)? yes

完成后记得将/root/.ssh/id_rsa从linuxidc19移除并妥善保管,以后可以用来维护集群.

3.更新源 root@linuxidc19: for node in 16 17 18 19 20 21 22; do ssh linuxidc$node \ wget -q -O- https://download.ceph.com/keys/release.asc | sudo apt-key add -;\ echo deb https://download.ceph.com/debian-jewel/ $(lsb_release -sc) main | sudo tee /etc/apt/sources.list.d/ceph.list;\ apt update && apt -y dist-upgrade && apt -y autoremove; done

#apt使用-y默认Yes

4.安装ceph-deploy root@linuxidc19: apt install ceph-deploy

注意: 16.04下这二个版本都有bug. ◦1.5.32在执行ceph-deploy mon create-initial命令后生成的ceph.client.admin.keyring文件是空的!

◦1.5.34则在重装时不会替换/var/lib/ceph/bootstrap-osd/ceph.keyring, 造成ceph-deploy osd activate失败. root@linuxidc19:~# apt-cache policy ceph-deploy ceph-deploy:   Installed: 1.5.34   Candidate: 1.5.34   Version table:  *** 1.5.34 999     999 https://download.ceph.com/debian-jewel xenial/main amd64 Packages     999 https://download.ceph.com/debian-jewel xenial/main i386 Packages     100 /var/lib/dpkg/status  1.5.32-0ubuntu1 500     500 http://hk.archive.ubuntu.com/ubuntu xenial/universe amd64 Packages     500 http://hk.archive.ubuntu.com/ubuntu xenial/universe i386 Packages

 

安装过程

参考: INSTALLATION (QUICK)

1.创建管理目录 root@linuxidc19:~# mkdir ceph-admin root@linuxidc19:~# cd ceph-admin/

2.初始配置 root@linuxidc19:~/ceph-admin# ceph-deploy new linuxidc16 test17

drwxr-xr-x 2 root root 4096 Sep 14 10:28 ./ drwx------ 6 root root 4096 Sep 14 10:28 ../ -rw-r--r-- 1 root root  215 Sep 14 10:28 ceph.conf -rw-r--r-- 1 root root 4080 Sep 14 10:28 ceph-deploy-ceph.log -rw------- 1 root root   73 Sep 14 10:28 ceph.mon.keyring

root@linuxidc19:~/ceph-admin# vi ceph.conf [global] fsid = c96ee478-4df7-4100-9792-c078cf44b3c4 mon_initial_members = linuxidc16, test17 mon_host = 172.17.4.16,172.17.4.17 auth_cluster_required = cephx auth_service_required = cephx auth_client_required = cephx

public_network = 172.17.4.0/24 cluster_network = 172.17.4.0/24 # 以下是针对ext4的bug osd_max_object_name_len = 256 osd_max_object_namespace_len = 64 osd_check_max_object_name_len_on_startup = false

需要注意: jewel 10.2.1对EXT4格式有个文件名长度BUG!

3.安装ceph  root@linuxidc19:~/ceph-admin# for node in 16 17 18 19 20 21 22; do ceph-deploy install linuxidc$node; done;

4.创建初始mon结点 root@linuxidc19:~/ceph-admin# ceph-deploy mon create-initial

5.创建激活osd结点, 去掉16,17 root@linuxidc19:~/ceph-admin# for node in 18 19 20 21 22; do ssh  linuxidc$node 'mkdir -R /data/ceph/osd; chown ceph:ceph -R /data/ceph; rm -rf /data/ceph/osd/*'; ceph-deploy osd prepare linuxidc$node:/data/ceph/osd; ceph-deploy osd activate linuxidc$node:/data/ceph/osd; done;

6.分发管理配置 root@linuxidc19:~/ceph-admin# for node in 16 17 18 19 20 21 22; do ceph-deploy admin linuxidc$node; ssh linuxidc$node 'chmod a+r /etc/ceph/ceph.client.admin.keyring'; done;

如果上述步骤需要重试,可以执行下述清理: root@linuxidc19:~/ceph-admin# ceph-deploy purgedata linuxidc16 test17 linuxidc18 test19 linuxidc20 test21 linuxidc22 root@linuxidc19:~/ceph-admin# ceph-deploy forgetkeys root@linuxidc19:~/ceph-admin# for node in 16 17 18 19 20 21 22; do ssh linuxidc$node rm -rf /data/ceph/osd/*; done; 另外, 重试命令需要带上"--overwrite-conf"选项!

1.测试集群是否安装成功 root@linuxidc19:~/ceph-admin# ceph -s

root@linuxidc19:~/ceph-admin# ceph osd tree

root@linuxidc19:~/ceph-admin# ceph osd perf

 

本篇文章来源于 Linux公社网站(www.linuxidc.com)  原文链接：http://www.linuxidc.com/Linux/2016-09/135261.htm