概述
今天看了下官网的zstack的安装镜像，发现2018-3-24有一次发布，因为本地是测试环境，而且我没有尝试过升级zstack，所以就打算升级一下zstack
升级前要知道的事情
首先官网上说zstack是支持两种升级方式，一种是增量升级一种是离线升级，增量方便，虽然不知道两种方式区别是什么，但是我选择了增量升级，可能就是软件源一个用线上，一个就是直接用本地的iso了吧，而且在升级前要对数据库做一个备份。还要知道一点的是，你只需要升级你的管理节点就好了，计算节点会自动升级的
备份数据库
ssh进管理节点输入下面命令dump出数据库
zstack-ctl dump_mysql
[root@MiWiFi-R1CM-srv ~]# zstack-ctl dump_mysql
Backup mysql successfully! You can check the file at /var/lib/zstack/mysql-backup/zstack-backup-db-2018-03-26_14-22-38.gz
升级
接着wget下安装包
wget http://cdn.zstack.io/product_downloads/zstack-enterprise/enterprise2.3/ZStack-installer-2.3.0.495.bin
下载完成输入下面命令直接升级
bash ZStack-installer-2.3.0.495.bin -u
记住全程要可以连上互联网，不然使用离线升级，整个升级过程很流畅，速度也挺快，可能是因为版本之间变化不大的缘故吧
[root@MiWiFi-R1CM-srv ~]# bash ZStack-installer-2.3.0.495.bin -u
_________ _____ _ ____ _ __
|__ / ___|_ _|/ \ / ___| |/ /
/ /\___ \ | | / _ \| | | ' /
/ /_ ___) || |/ ___ \ |___| . \
/____|____/ |_/_/ \_\____|_|\_\
____ _____ ___ _ _ ___ ____
__ __ |___ \ |___ / / _ \| || | / _ \| ___|
\ \ / / __) | |_ \| | | | || || (_) |___ \
\ V / / __/ _ ___) | |_| |__ _\__, |___) |
\_/ |_____(_)____(_)___(_) |_| /_/|____/
___ _ _ ____ _____ _ _ _ _ _____ ___ ___ _ _
|_ _| \ | / ___|_ _|/ \ | | | | / \|_ _|_ _/ _ \| \ | |
| || \| \___ \ | | / _ \ | | | | / _ \ | | | | | | | \| |
| || |\ |___) || |/ ___ \| |___| |___ / ___ \| | | | |_| | |\ |
|___|_| \_|____/ |_/_/ \_\_____|_____/_/ \_\_| |___\___/|_| \_|
1. Check Repo Version:
Check local repo version: ... PASS
2. Check System:
Pre-Checking: ... PASS
Check System: ... PASS
Update Package Repository: ... PASS
3. Get ZStack:
Download ZStack package: ... PASS
Unpack ZStack package: ... PASS
4. Upgrade ZStack:
Upgrade apache-tomcat: ... PASS
Upgrade zstack-ctl: ... PASS
Install General Libraries (takes a couple of minutes): ... PASS
Stop ZStack: ... PASS
Upgrade ZStack: ... PASS
Add cronjob to clean logs: ... PASS
Enable ZStack bootstrap service: ... PASS
Enable NTP: ... PASS
Config zstack.properties: ... PASS
Append iptables: ... PASS
Install ZStack Web UI (takes a couple of minutes): ... PASS
Start ZStack management node (takes a couple of minutes): ... PASS
Start ZStack Web UI: ... PASS
______________________________________________________________________________________________________________________________________________________________________________________________
ZStack in /usr/local/zstack has been successfully upgraded to version: 2.3.0.495
Management node has been started up again. You can use `zstack-ctl status` to check its status.
zstack-ui has been upgraded.
zstack-ui has been started up again.
Your old zstack was saved in /usr/local/zstack/upgrade/2018-03-26-14-28-22
______________________________________________________________________________________________________________________________________________________________________________________________
而且升级的时候我还开着一些虚拟机，也没有出现一些异常
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