Docker 1.12新功能探索（3）：编排试验之事前准备
2016-08-10 06:16
411 查看
在docker1.12中我们知道docker内置了swarm, 接下来当然会首先来验证这个功能.体验一下是否像docker自己说的那样好. 在使用swarm构筑docker的集群时, 事前需要有所准备, 我们准备3-4台虚拟机,内存和CPU以及Disk不用太多,能动即可.
Node构成
| 节点名称 | IP |
|---|---|
| host31 | 192.168.32.31 |
| host32 | 192.168.32.32 |
| host33 | 192.168.32.33 |
| host34 | 192.168.32.34 |
各节点网络设定
关闭防火墙关闭selinux
清除iptables规则
可使用下面的脚本，稍微减少本来就不多的动作，有100台以上的节点的话，估计无论多简单你都绝对不想手动操作吧。
[root@host31 ~]# cat set_network.sh #!/bin/bash echo "## disable selinux" sed -i "s/SELINUX=enforcing/SELINUX=disabled/g" /etc/sysconfig/selinux grep disabled /etc/sysconfig/selinux echo "## disable firewalld" systemctl disable firewalld systemctl stop firewalld echo "## clear iptables rules" iptables -F [root@host31 ~]# [root@host31 ~]# sh set_network.sh ## disable selinux # disabled - No SELinux policy is loaded. SELINUX=disabled ## disable firewalld Removed symlink /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service. Removed symlink /etc/systemd/system/basic.target.wants/firewalld.service. ## clear iptables rules [root@host31 ~]#
各节点安装docker1.12
可以使用如下脚本，在centos7上进行安装。结合baseurl实际路径，自行修正应该适合其它版本。[root@host31 ~]# cat /tmp/install_docker.sh
#!/bin/bash
LINUXOS=centos
VERSION=7
echo "## Setting yum repos"
cat > /etc/yum.repos.d/docker.repo <<-EOF
[dockerrepo]
name=Docker Repository
baseurl=https://yum.dockerproject.org/repo/experimental/${LINUXOS}/${VERSION}/
enabled=1
gpgcheck=1
gpgkey=https://yum.dockerproject.org/gpg
EOF
echo "## yum install docker"
yum install -y docker-engine
echo "## setting restart service for OS boot"
systemctl enable docker
echo "## start docker"
systemctl start docker
echo "## docker version confrim"
docker info |grep Version
[root@host31 ~]#执行结果
[root@host31 ~]# sh /tmp/install_docker.sh ## Setting yum repos ## yum install docker Loaded plugins: fastestmirror base | 3.6 kB 00:00:00 dockerrepo | 2.9 kB 00:00:00 extras | 3.4 kB 00:00:00 updates | 3.4 kB 00:00:00 (1/5): base/7/x86_64/group_gz | 155 kB 00:00:01 (2/5): base/7/x86_64/primary_db | 5.3 MB 00:00:07 (3/5): updates/7/x86_64/primary_db | 6.4 MB 00:00:17 (4/5): dockerrepo/primary_db | 49 kB 00:00:18 extras/7/x86_64/primary_db FAILED http://mirror.bit.edu.cn/centos/7.2.1511/extras/x86_64/repodata/bafd5e7438d36d63030e1ac0029c7a0be8f20ebc26bf7196c16ce2752fd63dff-primary.sqlite.bz2: [Errno 12] Timeout on http://mirror.bit.edu.cn/centos/7.2.1511/extras/x86_64/repodata/bafd5e7438d36d63030e1ac0029c7a0be8f20ebc26bf7196c16ce2752fd63dff-primary.sqlite.bz2: (28, 'Resolving timed out after 30574 milliseconds') Trying other mirror. (5/5): extras/7/x86_64/primary_db | 160 kB 00:00:00 Determining fastest mirrors * base: mirrors.163.com * extras: mirrors.163.com * updates: mirrors.163.com Resolving Dependencies --> Running transaction check ---> Package docker-engine.x86_64 0:1.12.0-1.el7.centos will be installed --> Processing Dependency: docker-engine-selinux >= 1.12.0-1.el7.centos for package: docker-engine-1.12.0-1.el7.centos.x86_64 --> Processing Dependency: libcgroup for package: docker-engine-1.12.0-1.el7.centos.x86_64 --> Processing Dependency: libseccomp.so.2()(64bit) for package: docker-engine-1.12.0-1.el7.centos.x86_64 --> Processing Dependency: libltdl.so.7()(64bit) for package: docker-engine-1.12.0-1.el7.centos.x86_64 --> Running transaction check ---> Package docker-engine-selinux.noarch 0:1.12.0-1.el7.centos will be installed --> Processing Dependency: policycoreutils-python for package: docker-engine-selinux-1.12.0-1.el7.centos.noarch ---> Package libcgroup.x86_64 0:0.41-8.el7 will be installed ---> Package libseccomp.x86_64 0:2.2.1-1.el7 will be installed ---> Package libtool-ltdl.x86_64 0:2.4.2-21.el7_2 will be installed --> Running transaction check ---> Package policycoreutils-python.x86_64 0:2.2.5-20.el7 will be installed --> Processing Dependency: libsemanage-python >= 2.1.10-1 for package: policycoreutils-python-2.2.5-20.el7.x86_64 --> Processing Dependency: audit-libs-python >= 2.1.3-4 for package: policycoreutils-python-2.2.5-20.el7.x86_64 --> Processing Dependency: python-IPy for package: policycoreutils-python-2.2.5-20.el7.x86_64 --> Processing Dependency: libqpol.so.1(VERS_1.4)(64bit) for package: policycoreutils-python-2.2.5-20.el7.x86_64 --> Processing Dependency: libqpol.so.1(VERS_1.2)(64bit) for package: policycoreutils-python-2.2.5-20.el7.x86_64 --> Processing Dependency: libapol.so.4(VERS_4.0)(64bit) for package: policycoreutils-python-2.2.5-20.el7.x86_64 --> Processing Dependency: checkpolicy for package: policycoreutils-python-2.2.5-20.el7.x86_64 --> Processing Dependency: libqpol.so.1()(64bit) for package: policycoreutils-python-2.2.5-20.el7.x86_64 --> Processing Dependency: libapol.so.4()(64bit) for package: policycoreutils-python-2.2.5-20.el7.x86_64 --> Running transaction check ---> Package audit-libs-python.x86_64 0:2.4.1-5.el7 will be installed ---> Package checkpolicy.x86_64 0:2.1.12-6.el7 will be installed ---> Package libsemanage-python.x86_64 0:2.1.10-18.el7 will be installed ---> Package python-IPy.noarch 0:0.75-6.el7 will be installed ---> Package setools-libs.x86_64 0:3.3.7-46.el7 will be installed --> Finished Dependency Resolution Dependencies Resolved =================================================================================================================================================== Package Arch Version Repository Size =================================================================================================================================================== Installing: docker-engine x86_64 1.12.0-1.el7.centos dockerrepo 19 M Installing for dependencies: audit-libs-python x86_64 2.4.1-5.el7 base 69 k checkpolicy x86_64 2.1.12-6.el7 base 247 k docker-engine-selinux noarch 1.12.0-1.el7.centos dockerrepo 28 k libcgroup x86_64 0.41-8.el7 base 64 k libseccomp x86_64 2.2.1-1.el7 base 49 k libsemanage-python x86_64 2.1.10-18.el7 base 94 k libtool-ltdl x86_64 2.4.2-21.el7_2 updates 49 k policycoreutils-python x86_64 2.2.5-20.el7 base 435 k python-IPy noarch 0.75-6.el7 base 32 k setools-libs x86_64 3.3.7-46.el7 base 485 k Transaction Summary =================================================================================================================================================== Install 1 Package (+10 Dependent packages) Total download size: 21 M Installed size: 84 M Downloading packages: warning: /var/cache/yum/x86_64/7/base/packages/audit-libs-python-2.4.1-5.el7.x86_64.rpm: Header V3 RSA/SHA256 Signature, key ID f4a80eb5: NOKEYETA Public key for audit-libs-python-2.4.1-5.el7.x86_64.rpm is not installed (1/11): audit-libs-python-2.4.1-5.el7.x86_64.rpm | 69 kB 00:00:00 (2/11): checkpolicy-2.1.12-6.el7.x86_64.rpm | 247 kB 00:00:01 (3/11): libseccomp-2.2.1-1.el7.x86_64.rpm | 49 kB 00:00:00 (4/11): libsemanage-python-2.1.10-18.el7.x86_64.rpm | 94 kB 00:00:00 (5/11): libcgroup-0.41-8.el7.x86_64.rpm | 64 kB 00:00:01 (6/11): python-IPy-0.75-6.el7.noarch.rpm | 32 kB 00:00:00 (7/11): setools-libs-3.3.7-46.el7.x86_64.rpm | 485 kB 00:00:00 (8/11): policycoreutils-python-2.2.5-20.el7.x86_64.rpm | 435 kB 00:00:01 Public key for libtool-ltdl-2.4.2-21.el7_2.x86_64.rpm is not installed==- ] 423 kB/s | 3.8 MB 00:00:40 ETA (9/11): libtool-ltdl-2.4.2-21.el7_2.x86_64.rpm | 49 kB 00:00:06 warning: /var/cache/yum/x86_64/7/dockerrepo/packages/docker-engine-selinux-1.12.0-1.el7.centos.noarch.rpm: Header V4 RSA/SHA512 Signature, key ID 2c52609d: NOKEY Public key for docker-engine-selinux-1.12.0-1.el7.centos.noarch.rpm is not installed (10/11): docker-engine-selinux-1.12.0-1.el7.centos.noarch.rpm | 28 kB 00:00:12 (11/11): docker-engine-1.12.0-1.el7.centos.x86_64.rpm | 19 MB 00:00:51 --------------------------------------------------------------------------------------------------------------------------------------------------- Total 409 kB/s | 21 MB 00:00:51 Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7 Importing GPG key 0xF4A80EB5: Userid : "CentOS-7 Key (CentOS 7 Official Signing Key) <security@centos.org>" Fingerprint: 6341 ab27 53d7 8a78 a7c2 7bb1 24c6 a8a7 f4a8 0eb5 Package : centos-release-7-2.1511.el7.centos.2.10.x86_64 (@anaconda) From : /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7 Retrieving key from https://yum.dockerproject.org/gpg Importing GPG key 0x2C52609D: Userid : "Docker Release Tool (releasedocker) <docker@docker.com>" Fingerprint: 5811 8e89 f3a9 1289 7c07 0adb f762 2157 2c52 609d From : https://yum.dockerproject.org/gpg Running transaction check Running transaction test Transaction test succeeded Running transaction Installing : libcgroup-0.41-8.el7.x86_64 1/11 Installing : libsemanage-python-2.1.10-18.el7.x86_64 2/11 Installing : audit-libs-python-2.4.1-5.el7.x86_64 3/11 Installing : libseccomp-2.2.1-1.el7.x86_64 4/11 Installing : python-IPy-0.75-6.el7.noarch 5/11 Installing : checkpolicy-2.1.12-6.el7.x86_64 6/11 Installing : libtool-ltdl-2.4.2-21.el7_2.x86_64 7/11 Installing : setools-libs-3.3.7-46.el7.x86_64 8/11 Installing : policycoreutils-python-2.2.5-20.el7.x86_64 9/11 Installing : docker-engine-selinux-1.12.0-1.el7.centos.noarch 10/11 restorecon: lstat(/var/lib/docker) failed: No such file or directory warning: %post(docker-engine-selinux-1.12.0-1.el7.centos.noarch) scriptlet failed, exit status 255 Non-fatal POSTIN scriptlet failure in rpm package docker-engine-selinux-1.12.0-1.el7.centos.noarch Installing : docker-engine-1.12.0-1.el7.centos.x86_64 11/11 Verifying : setools-libs-3.3.7-46.el7.x86_64 1/11 Verifying : docker-engine-selinux-1.12.0-1.el7.centos.noarch 2/11 Verifying : libcgroup-0.41-8.el7.x86_64 3/11 Verifying : libtool-ltdl-2.4.2-21.el7_2.x86_64 4/11 Verifying : checkpolicy-2.1.12-6.el7.x86_64 5/11 Verifying : python-IPy-0.75-6.el7.noarch 6/11 Verifying : libseccomp-2.2.1-1.el7.x86_64 7/11 Verifying : docker-engine-1.12.0-1.el7.centos.x86_64 8/11 Verifying : audit-libs-python-2.4.1-5.el7.x86_64 9/11 Verifying : policycoreutils-python-2.2.5-20.el7.x86_64 10/11 Verifying : libsemanage-python-2.1.10-18.el7.x86_64 11/11 Installed: docker-engine.x86_64 0:1.12.0-1.el7.centos Dependency Installed: audit-libs-python.x86_64 0:2.4.1-5.el7 checkpolicy.x86_64 0:2.1.12-6.el7 docker-engine-selinux.noarch 0:1.12.0-1.el7.centos libcgroup.x86_64 0:0.41-8.el7 libseccomp.x86_64 0:2.2.1-1.el7 libsemanage-python.x86_64 0:2.1.10-18.el7 libtool-ltdl.x86_64 0:2.4.2-21.el7_2 policycoreutils-python.x86_64 0:2.2.5-20.el7 python-IPy.noarch 0:0.75-6.el7 setools-libs.x86_64 0:3.3.7-46.el7 Complete! ## setting restart service for OS boot Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/systemd/system/docker.service. ## start docker ## docker version confrim WARNING: Usage of loopback devices is strongly discouraged for production use. Use `--storage-opt dm.thinpooldev` to specify a custom block storage device. WARNING: bridge-nf-call-iptables is disabled WARNING: bridge-nf-call-ip6tables is disabled Server Version: 1.12.0 Library Version: 1.02.107-RHEL7 (2015-10-14) Kernel Version: 3.10.0-327.el7.x86_64 [root@host31 ~]#
内容来自用户分享和网络整理，不保证内容的准确性，如有侵权内容，可联系管理员处理 
相关文章推荐
- Docker 1.12新功能探索（7）：服务编排三剑客简单总结
- Docker 1.12新功能探索（1）：centos7上安装docker1.12
- Docker 1.12新功能探索（6）：Service update和Service Scale
- Docker 1.12新功能探索（9）：network基础
- Docker 1.12新功能探索（2）：新增重大特性
- Docker 1.12新功能探索（5）：创建服务
- Docker 1.12新功能探索（4）：1分钟创建集群
- Docker 1.12新功能探索（10）：network基础
- Docker 1.12新功能探索（8）：Remote Api 1.24
- Docker 1.12迎来内置编排机制
- docker探索-Docker 1.13 编排能力进化（十三）
- 让Docker功能更强大的10个开源工具
- 探索 SharePoint 2013 Search功能
- lua 源码探索 准备
- docker探索-compose使用教程（八）
- 在Centos7中安装Docker1.12的详细教程
- Docker（三）-服务编排-DockerCompose
- 探索 Docker bridge 的正确姿势，亲测有效！
- Docker之创建SSH服务功能的镜像（commit方法）
- corethink功能模块探索开发（三）让这个模块可见