trove 基于 centos7 制作 mysql5.6 镜像

本文档是手动制作mysql5.6的trove镜像
openstack版本为newton

1、创建基础虚拟机
登录openstack创建一台虚拟机，这台虚拟机用于制作trove镜像，虚拟机的根磁盘最终会上传到glance给trove使用，虚拟机的根磁盘容量根据需要设置，这里略掉这步的详细操作。
以下操作皆登录到这台虚拟机中操作
2、配置ssh

cat /etc/ssh/sshd_config
UseDNS no

3、添加mysql源

yum install http://dev.mysql.com/get/mysql57-community-release-el7-9.noarch.rpm 
yum remove mariadb-libs

4、编辑/etc/yum.repos.d/mysql-community.repo 禁用mysql5.7，启用mysql5.6

# Enable to use MySQL 5.6
[mysql56-community]
name=MySQL 5.6 Community Server
baseurl=http://repo.mysql.com/yum/mysql-5.6-community/el/7/$basearch/
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql

[mysql57-community]
name=MySQL 5.7 Community Server
baseurl=http://repo.mysql.com/yum/mysql-5.7-community/el/7/$basearch/
enabled=0
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql

5、安装mysql5.6
安装完mysql後，不必设置mysqld随机启动

yum install mysql-community-server

6、配置mysql
6.1、编辑/etc/my.cnf，在文件末尾添加下面一行，include这行上面有一行空白

...

!includedir /etc/mysql/conf.d/

6.2、创建目录

mkdir -p /etc/mysql/conf.d/

7、安装percona-xtrabackup

innobackupex
yum install https://www.percona.com/redir/downloads/percona-release/redhat/percona-release-0.1-4.noarch.rpm yum install percona-xtrabackup-24

8、源代码安装trove-agent
8.1、安装相关软件包

yum install git python-virtualenv

8.2、创建用户

useradd -m trove

# 设置trove sudo
cat /etc/sudoers.d/trove
Defaults:trove !requiretty
trove ALL=(ALL) NOPASSWD:ALL

8.3、下载trove源码

mkdir /opt/trove
chown trove:trove /opt/trove

su - trove
cd /opt/trove

git clone https://github.com/openstack/trove.git[/code]8.4、整合代码 由于在centos上备份时，有bug:1649592，已经整合时master分支，需要将commit整合进stable/newton分支

commit c1fd3e3a4c643dba524656c8d53d3506233beaf3
Merge: 880c707 f5d1cae
Author: Jenkins <jenkins@review.openstack.org>
Date:   Thu Jan 19 16:07:48 2017 +0000

Merge "Fix backup of mysql variants on Centos"
...
commit f5d1caea889f85196dfc1efe4892560f0b145191
Author: Doug Shelley <doug@parelastic.com> 2016-01-20 04:22:03
Committer: Doug Shelley <doug@parelastic.com> 2016-12-14 00:29:41
8.5、整合提交

git config --global user.email  "youre mail"
git config --global user.name "yuoure name"

git checkout stable/newton
git cherry-pick f5d1cae
8.6、安装trove
8.6.1、安装trove

yum install gcc

su - trove
cd /opt/trove
virtualenv ven
source ven/bin/activate
pip install pip --upgrade

cd trove
pip install -r requirements.txt  \
--index-url http://mirrors.aliyun.com/pypi/simple/ \
--trusted-host mirrors.aliyun.com

python setup.py install
8.6.2、创建启动文件

mkdir -p /etc/trove/conf.d
chown -R trove:trove /etc/trove

mkdir -p /var/lib/trove
chown -R trove:trove /var/lib/trove

mkdir -p /var/log/trove
chown -R trove:trove /var/log/trove

# 如果trove-guestagent.conf,guest_info.conf未预先创建，
# 并设置/etc/trove的owner为trove，创建instance后，
# 由nova注入的这两个文件将拥有root权限
# 文件预先存在，nova 注入文件不改变文件的user和group，会改变文件的读写权限
touch /etc/trove/conf.d/trove-guestagent.conf
touch /etc/trove/conf.d/guest_info.conf
chown -R trove:trove /etc/trove

cat /usr/lib/systemd/system/trove-guestagent.service
[Unit]
Description=OpenStack Trove guestagent Service
After=syslog.target network.target

[Service]
Type=simple
User=trove
ExecStart=/opt/trove/ven/bin/trove-guestagent --config-file /etc/trove/conf.d/trove-guestagent.conf --config-file /etc/trove/conf.d/guest_info.conf
Restart=on-failure

[Install]
WantedBy=multi-user.target

systemctl daemon-reload
systemctl enable trove-guestagent
9、上传镜像
9.1、清理系统

rm -rf .ssh
rm -rf /home/trove/.cache/
rm -rf /var/lib/mysql/auto.cnf
poweroff
9.2、将镜像制作成快照
10、配置trove使用制作好的镜像

trove-manage --config-file /etc/trove/trove.conf   \
datastore_version_update   mysql mysql-5.6 mysql \
0eb99bad-ad41-420c-bab5-844d84421c23 '' 1