关于 Zabbix 服务器

Zabbix 是一款免费的开源网络监控软件工具，用于监控和跟踪 IT 基础设施的可用性和性能：服务器、网络设备和其他 IT 资产。

在本教程中，我们将介绍如何在 Ubuntu 16.04 LTS 或者 Ubuntu 18.04 LTS 上将 Zabbix Server 3.4.x 升级到 4.0.x。
这些步骤也可用于将 Zabbix Server 3.2.x 升级到 3.4.x 或者 4.0.x。

5.升级Zabbix Server组件

要升级 Zabbix Server 组件，请运行以下命令：

# apt-get install --only-upgrade zabbix-server-mysql zabbix-frontend-php zabbix-agent

升级zabbix Server组件后，一定要像之前一样重新配置Zabbix Server配置文件zabbix_server.conf，apache2配置文件zabbix.conf。

6. 启动 Zabbix Server Daemon

# systemctl start zabbix-server

3.备份配置文件、PHP文件和Zabbix二进制文件

要备份 Zabbix Server 配置文件，请使用以下命令：

# cp /etc/zabbix/zabbix_server.conf /opt/zabbix-backup/
# cp /etc/zabbix/zabbix_agentd.conf /opt/zabbix-backup/
# cp /etc/apache2/conf-enabled/zabbix.conf /opt/zabbix-backup/

要备份 PHP 文件和 Zabbix Server 二进制文件，请使用以下命令：

# cp -R /usr/share/zabbix//opt/zabbix-backup/
# cp -R /usr/share/doc/zabbix-* /opt/zabbix-backup/

4.更新Zabbix Server仓库配置包

卸载我们当前的 Zabbix 版本存储库，如下所示：

# rm -Rf /etc/apt/sources.list.d/zabbix.list

下载 Zabbix 存储库包版本：

# wget https://repo.zabbix.com/zabbix/4.0/ubuntu/pool/main/z/zabbix-release/zabbix-release_4.0-2+xenial_all.deb
--2015-10-07 20:49:10--  https://repo.zabbix.com/zabbix/4.0/ubuntu/pool/main/z/zabbix-release/zabbix-release_4.0-2+xenial_all.deb
Resolving repo.zabbix.com (repo.zabbix.com)... 162.243.159.138
Connecting to repo.zabbix.com (repo.zabbix.com)|162.243.159.138|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 3930 (3.8K) [application/octet-stream]
Saving to: ‘zabbix-release_4.0-2+xenial_all.deb’
zabbix-release_4.0-2+xenial_all.deb       100%[==================================================================================>]   3.84K  --.-KB/s    in 0s
2015-10-07 20:49:11 (166 MB/s) - ‘zabbix-release_4.0-2+xenial_all.deb’ saved [3930/3930]

升级 Zabbix 当前存储库包版本如下：

# dpkg -i zabbix-release_4.0-1+xenial_all.deb
dpkg: error processing archive zabbix-release_4.0-1+xenial_all.deb (--install):
 cannot access archive: No such file or directory
Errors were encountered while processing:
 zabbix-release_4.0-1+xenial_all.deb
jack@onitroad:~# dpkg -i zabbix-release_4.0-2+xenial_all.deb
(Reading database ... 252597 files and directories currently installed.)
Preparing to unpack zabbix-release_4.0-2+xenial_all.deb ...
Unpacking zabbix-release (1:4.0-2+xenial) over (3.4-1+xenial) ...
Setting up zabbix-release (1:4.0-2+xenial) ...
Configuration file '/etc/apt/sources.list.d/zabbix.list'
 ==> Deleted (by you or by a script) since installation.
 ==> Package distributor has shipped an updated version.
   What would you like to do about it ?  Your options are:
    Y or I  : install the package maintainer's version
    N or O  : keep your currently-installed version
      D     : show the differences between the versions
      Z     : start a shell to examine the situation
 The default action is to keep your current version.
*** zabbix.list (Y/I/N/O/D/Z) [default=N] ? Y
Installing new version of config file /etc/apt/sources.list.d/zabbix.list ...

最后，使用以下命令更新存储库信息：

# apt-get update

2.备份现有的Zabbix数据库

创建一个目录，我们将其中备份 Zabbix Server 数据库和配置文件：

# mkdir /opt/zabbix-backup/

使用以下命令备份 Zabbix Server 数据库，将 zabbixdb 替换为 Zabbix Server 数据库名称：

# mysqldump -u root -p zabbixdb > /opt/zabbix-backup/zabbixdb.sql
Enter password:

1. 停止 Zabbix Server Daemon

停止 Zabbix Server 以确保没有新数据插入数据库：

# systemctl stop zabbix-server