Zabbix3.4一步步升级至4.2版本(yum安装)

简言

前面我们已经介绍了Zabbix3.4的安装教程,但是随着zabbix的更新，现在已经到zabbix4的版本了。下面我们介绍此种安装方式如何进行升级

一、系统环境

1 2	cat /etc/redhat-release

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原有zabbix版本:Zabbix 3.4.15
升级zabbix版本:Zabbix 4.2.5

二、备份工作

因为我们是生产环境，所以升级之前要进行备份。
1.备份数据库
这是非常重要的一步。确保您具有数据库的备份。如果升级过程失败（缺少磁盘空间，关闭电源，出现意外问题），这将有所帮助。
简单备份

1 2	mysqldump -uzabbix -p你的密码 zabbix > zabbix_back.sql

推荐备份
数据库全备时间比较长且文件交大，建议压缩或者使用xtrabackup，此处采用mysqldump，后面文档介绍具体用法

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mysqldump -uzabbix -p你的密码 --opt --skip-lock-tables --database zabbix > zabbix.sql
mysqldump -uzabbix -p你的密码  --opt --skip-lock-tables --database zabbix | gzip > zabbix_`date +'%Y%m%d%H%M%S'`.sql.gz

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2.备份zabbix文件

mkdir /opt/zabbix-backup/  #创建一个空文件
cp /etc/zabbix/zabbix_server.conf /opt/zabbix-backup/
cp /etc/httpd/conf.d/zabbix.conf  /opt/zabbix-backup/
cp -R /usr/share/zabbix/ /opt/zabbix-backup/
cp -R /usr/share/doc/zabbix-* /opt/zabbix-backup/

三、检查及卸载当前zabbix版本

1、先停zabbix-server

1 2	systemctl stop zabbix-server.service

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2、检查当前版本

[root@localhost ~]# rpm -qa zabbix-web-mysql
zabbix-web-mysql-3.4.15-1.el7.noarch

[root@localhost ~]# rpm -qa zabbix-server-mysql
zabbix-server-mysql-3.4.15-1.el7.x86_64

3、卸载当前版本

yum remove zabbix-server-mysql zabbix-web-mysql -y
yum remove  zabbix-release -y
yum clean all

4、下载新版本yum源仓库地址

1 2	rpm -Uvh https://repo.zabbix.com/zabbix/4.2/rhel/7/x86_64/zabbix-release-4.2-2.el7.noarch.rpm

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5、安装新版本Zabbix3.4.1

1 2	yum -y install zabbix-server-mysql zabbix-web-mysql zabbix-agent

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四、配置及升级

1、配置数据库用户及密码

1 2	grep '^'[a-Z] /etc/zabbix/zabbix_server.conf

这里我们发现里面没有密码这一项，我们手动添加DBPassword=zabbix

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1 2	grep '^'[a-Z] /etc/zabbix/zabbix_agentd.conf

将主机名称和server一致，否则会报下面的问题
cannot send list of active checks to “127.0.0.1”: host [Zabbix server] not
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2、编辑Zabbix前端PHP配置,更改时区

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vim /etc/httpd/conf.d/zabbix.conf
php_value date.timezone Asia/Shanghai

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3、启动zabbix服务

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systemctl enable zabbix-server
systemctl start zabbix-server

4、SELinux配置

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setsebool -P httpd_can_connect_zabbix on
setsebool -P httpd_can_network_connect_db on

5、启动httpd并设置开机启动

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systemctl start httpd
systemctl enable httpd

6、查看日志信息，是否升级成功(升级的时间会根据的数据库的大小决定你升级的时间)

1 2	tail -f /var/log/zabbix/zabbix_server.log

2332:20170908:210551.886 server #9 started [trapper #1]
2335:20170908:210551.887 server #12 started [trapper #4]
2336:20170908:210551.889 server #13 started [trapper #5]
2341:20170908:210551.929 server #18 started [http poller #1]
1909:20170908:210654.146 Got signal [signal:15(SIGTERM),sender_pid:2398,sender_uid:0,reason:0]. Exiting …
1909:20170908:210656.146 syncing history data…
1909:20170908:210656.147 syncing history data done
1909:20170908:210656.147 syncing trend data…
1909:20170908:210656.149 syncing trend data done
1909:20170908:210656.149 Zabbix Server stopped. Zabbix 3.2.7 (revision 70298).
2783:20170908:213055.812 Starting Zabbix Server. Zabbix 3.4.1 (revision 71734).
2783:20170908:213055.813 ****** Enabled features ******
2783:20170908:213055.813 SNMP monitoring: YES
2783:20170908:213055.813 IPMI monitoring: YES
2783:20170908:213055.813 Web monitoring: YES
2783:20170908:213055.813 VMware monitoring: YES
2783:20170908:213055.813 SMTP authentication: YES
2783:20170908:213055.813 Jabber notifications: YES
2783:20170908:213055.813 Ez Texting notifications: YES
2783:20170908:213055.813 ODBC: YES
2783:20170908:213055.813 SSH2 support: YES
2783:20170908:213055.813 IPv6 support: YES
2783:20170908:213055.813 TLS support: YES
2783:20170908:213055.813 ******************************
2783:20170908:213055.813 using configuration file: /etc/zabbix/zabbix_server.conf
2783:20170908:213055.817 current database version (mandatory/optional): 03020000/03020000
2783:20170908:213055.817 required mandatory version: 03040000
2783:20170908:213055.817 starting automatic database upgrade
2783:20170908:213055.842 completed 0% of database upgrade
2783:20170908:213055.886 completed 1% of database upgrade
2783:20170908:213055.904 completed 2% of database upgrade
2783:20170908:213055.920 completed 3% of database upgrade
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2783:20170908:213058.316 database upgrade fully completed #看到该信息表示升级成功
2783:20170908:213058.322 server #0 started [main process]
2814:20170908:213058.346 server #27 started [trapper #5]
2798:20170908:213058.348 server #11 started [history syncer #3]
2800:20170908:213058.349 server #13 started [escalator #1]
2801:20170908:213058.350 server #14 started [proxy poller #1]
2803:20170908:213058.353 server #16 started [task manager #1]
2806:20170908:213058.353 server #19 started [poller #3]
2809:20170908:213058.365 server #22 started [unreachable poller #1]
2810:20170908:213058.376 server #23 started [trapper #1]
2817:20170908:213058.378 server #30 started [preprocessing manager #1]
2799:20170908:213058.378 server #12 started [history syncer #4]
2795:20170908:213058.378 server #8 started [discoverer #1]
2808:20170908:213058.390 server #21 started [poller #5]
2819:20170908:213058.400 server #32 started [preprocessing worker #2]
2816:20170908:213058.401 server #29 started [alert manager #1]
2791:20170908:213058.401 server #4 started [alerter #3]
2811:20170908:213058.401 server #24 started [trapper #2]
2788:20170908:213058.404 server #1 started [configuration syncer #1]
2789:20170908:213058.404 server #2 started [alerter #1]
2792:20170908:213058.404 server #5 started [housekeeper #1]
2793:20170908:213058.404 server #6 started [timer #1]
2794:20170908:213058.405 server #7 started [http poller #1]
2797:20170908:213058.405 server #10 started [history syncer #2]
2802:20170908:213058.405 server #15 started [self-monitoring #1]
2804:20170908:213058.406 server #17 started [poller #1]
2807:20170908:213058.416 server #20 started [poller #4]
2812:20170908:213058.427 server #25 started [trapper #3]
2813:20170908:213058.429 server #26 started [trapper #4]
2815:20170908:213058.431 server #28 started [icmp pinger #1]
2790:20170908:213058.431 server #3 started [alerter #2]
2796:20170908:213058.431 server #9 started [history syncer #1]
2805:20170908:213058.432 server #18 started [poller #2]
2820:20170908:213058.448 server #33 started [preprocessing worker #3]
2818:20170908:213058.449 server #31 started [preprocessing worker #1]
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8、升级成功之后的问题处理
31503:20170909:110826.194 Starting Zabbix Server. Zabbix 3.4.1 (revision 71734).
31503:20170909:110826.194 ****** Enabled features ******
31503:20170909:110826.194 SNMP monitoring: YES
31503:20170909:110826.194 IPMI monitoring: YES
31503:20170909:110826.194 Web monitoring: YES
31503:20170909:110826.194 VMware monitoring: YES
31503:20170909:110826.194 SMTP authentication: YES
31503:20170909:110826.194 Jabber notifications: YES
31503:20170909:110826.195 Ez Texting notifications: YES
31503:20170909:110826.195 ODBC: YES
31503:20170909:110826.195 SSH2 support: YES
31503:20170909:110826.195 IPv6 support: YES
31503:20170909:110826.195 TLS support: YES
31503:20170909:110826.195 ******************************
31503:20170909:110826.195 using configuration file: /etc/zabbix/zabbix_server.conf
31503:20170909:110826.201 current database version (mandatory/optional): 03040000/03040000
31503:20170909:110826.201 required mandatory version: 03040000
31503:20170909:110826.556 __mem_malloc: skipped 6 asked 64112 skip_min 584 skip_max 24312
31503:20170909:110826.557 [file:dbconfig.c,line:90] zbx_mem_realloc(): out of memory (requested 64112 bytes)
31503:20170909:110826.557 [file:dbconfig.c,line:90] zbx_mem_realloc(): please increase CacheSize configuration parameter
31526:20170909:110836.699 Starting Zabbix Server. Zabbix 3.4.1 (revision 71734).