1. 页面报错 Error connecting to database: Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)
我的数据库sock文件在这 /data/mysql/mysql.sock
[root@bash-5 ~]# mkdir /var/lib/mysql/
[root@bash-5 ~]# ln -s /data/mysql/mysql.sock /var/lib/mysql/mysql.sock
[root@bash-5 ~]# ll /var/lib/mysql/mysql.sock
lrwxrwxrwx 1 root root 22 Feb 14 19:30 /var/lib/mysql/mysql.sock -> /data/mysql/mysql.sock
2. Zabbix ( proxy ) poller processes more than 75% busy 问题
一：重启zabbix-server 结合定时任务
service zabbix-server restart
crontab -e 新加一个定时任务：
@daily service zabbix-server restart > /dev/null 2>&1
二：编辑Zabbix Server的配置文件/etc/zabbix/zabbix_server.conf，找到配置StartPollers的段落：
直接在这增加一行： StartPollers=10
Proxy的在这里:
### Option: StartProxyPollers
# Number of pre-forked instances of pollers for passive proxies.
#
# Mandatory: no
# Range: 0-250
# Default:
# StartProxyPollers=1
StartProxyPollers=5
将参数配置改成多少取决于服务器的性能和监控的数量。内存足够的话可以设置高些
3. Zabbix value cache working in low memory mode
[root@localhost zabbix] vi /etc/zabbix/zabbix_server.conf
### Option: CacheSize
# Size of configuration cache, in bytes.
# Shared memory size for storing host, item and trigger data.
#
# Mandatory: no
# Range: 128K-2G
# Default:
# CacheSize=8M
CacheSize=256M
[root@localhost zabbix]# systemctl restart zabbix-server
4. Zabbix value cache working in low memory mode
修改 zabbix_server.conf配置文件，定位到ValueCacheSize，然后调高ValueCacheSize大小，大小根据自己环境调整
### Option: ValueCacheSize
# Size of history value cache, in bytes.
# Shared memory size for caching item history data requests.
# Setting to 0 disables value cache.
#
# Mandatory: no
# Range: 0,128K-64G
# Default:
ValueCacheSize=64M ####默认为8M
5.error: Failed dependencies
fping is needed by zabbix-server-mysql-3.4.8-1.el7.x86_64
libOpenIPMI.so.0()(64bit) is needed by zabbix-server-mysql-3.4.8-1.el7.x86_64
libOpenIPMIposix.so.0()(64bit) is needed by zabbix-server-mysql-3.4.8-1.el7.x86_64
libevent-2.0.so.5()(64bit) is needed by zabbix-server-mysql-3.4.8-1.el7.x86_64
libiksemel.so.3()(64bit) is needed by zabbix-server-mysql-3.4.8-1.el7.x86_64
libodbc.so.2()(64bit) is needed by zabbix-server-mysql-3.4.8-1.el7.x86_64
安装依赖包
yum install fping libevent OpenIPMI iksemel unixODBC dejavu-sans-fonts