Zabbix Server单机性能优化

## 单机环境
>OS: CentOS 7.3
CPU: 2核
MEM: 4G

## zabbix监控统计
```
Number of hosts (enabled/disabled)		111/0
Number of templates	110
监控项数量（已启用/已禁用/不支持）		   10663	10488 / 154 / 21
触发器数量（已启用/已禁用 [问题/正常]）	  4693     4575  / 118 [4 / 4571]
用户数(线上)								3		 1
要求的主机性能, 每秒新值				    113.78
```

## zabbix队列情况

| 监控项            | 5秒 | 10秒 | 30秒 | 1分 | 5分 | 10分钟以上 |
|----------------|----|-----|-----|----|----|--------|
| Zabbix客户端(主动式) | 54 | 218 | 152 | 51 | 3  | 7      |

## 使用环境说明
1. 所有客户端全部采用zabbixAgent监控
1. 所有客户端均通过主动模式直接连接到server
1. 所有客户端均跨公网传输数据

## Server配置优化
```bash
# This is a configuration file for Zabbix server daemon
# To get more information about Zabbix, visit http://www.zabbix.com

############ GENERAL PARAMETERS #################

### Option: ListenPort
#       Listen port for trapper.
#
# Mandatory: no
# Range: 1024-32767
# Default:
ListenPort=28591

### Option: SourceIP
#       Source IP address for outgoing connections.
#
# Mandatory: no
# Default:
# SourceIP=

### Option: LogType
#       Specifies where log messages are written to:
#               system  - syslog
#               file    - file specified with LogFile parameter
#               console - standard output
#
# Mandatory: no
# Default:
# LogType=file

### Option: LogFile
#       Log file name for LogType 'file' parameter.
#
# Mandatory: yes, if LogType is set to file, otherwise no
# Default:
# LogFile=

LogFile=/zabbix/zabbix_server/log/zabbix_server.log

### Option: LogFileSize
#       Maximum size of log file in MB.
#       0 - disable automatic log rotation.
#
# Mandatory: no
# Range: 0-1024
# Default:
LogFileSize=200

### Option: DebugLevel
#       Specifies debug level:
#       0 - basic information about starting and stopping of Zabbix processes
#       1 - critical information
#       2 - error information
#       3 - warnings
#       4 - for debugging (produces lots of information)
#       5 - extended debugging (produces even more information)
#
# Mandatory: no
# Range: 0-5
# Default:
DebugLevel=3

### Option: PidFile
#       Name of PID file.
#
# Mandatory: no
# Default:
PidFile=/zabbix/zabbix_server/log/zabbix_server.pid

### Option: SocketDir
#       IPC socket directory.
#               Directory to store IPC sockets used by internal Zabbix services.
#
# Mandatory: no
# Default:
# SocketDir=/tmp

### Option: DBHost
#       Database host name.
#       If set to localhost, socket is used for MySQL.
#       If set to empty string, socket is used for PostgreSQL.
#
# Mandatory: no
# Default:
DBHost=127.0.0.1

### Option: DBName
#       Database name.
#
# Mandatory: yes
# Default:
#DBName=zabbix

DBName=zabbix

### Option: DBSchema
#       Schema name. Used for PostgreSQL.
#
# Mandatory: no
# Default:
# DBSchema=

### Option: DBUser
#       Database user.
#
# Mandatory: no
# Default:
# DBUser=

DBUser=zabbix

### Option: DBPassword
#       Database password.
#       Comment this line if no password is used.
#
# Mandatory: no
# Default:
DBPassword=123456

### Option: DBSocket
#       Path to MySQL socket.
#
# Mandatory: no
# Default:
DBSocket=/zabbix/mysql/tmp/mysql.sock

### Option: DBPort
#       Database port when not using local socket.
#
# Mandatory: no
# Range: 1024-65535
# Default:
DBPort=3306

### Option: HistoryStorageURL
#       History storage HTTP[S] URL.
#
# Mandatory: no
# Default:
# HistoryStorageURL=

### Option: HistoryStorageTypes
#       Comma separated list of value types to be sent to the history storage.
#
# Mandatory: no
# Default:
# HistoryStorageTypes=uint,dbl,str,log,text

### Option: HistoryStorageDateIndex
#       Enable preprocessing of history values in history storage to store values in different indices based on date.
#       0 - disable
#       1 - enable
#
# Mandatory: no
# Default:
# HistoryStorageDateIndex=0

### Option: ExportDir
#       Directory for real time export of events, history and trends in newline delimited JSON format.
#       If set, enables real time export.
#
# Mandatory: no
# Default:
# ExportDir=

### Option: ExportFileSize
#       Maximum size per export file in bytes.
#       Only used for rotation if ExportDir is set.
#
# Mandatory: no
# Range: 1M-1G
# Default:
# ExportFileSize=1G

############ ADVANCED PARAMETERS ################

### Option: StartPollers
#       Number of pre-forked instances of pollers.
#
# Mandatory: no
# Range: 0-1000
# Default:
#StartPollers=10
StartPollers=30

### Option: StartIPMIPollers
#       Number of pre-forked instances of IPMI pollers.
#               The IPMI manager process is automatically started when at least one IPMI poller is started.
#
# Mandatory: no
# Range: 0-1000
# Default:
# StartIPMIPollers=0

### Option: StartPreprocessors
#       Number of pre-forked instances of preprocessing workers.
#               The preprocessing manager process is automatically started when preprocessor worker is started.
#
# Mandatory: no
# Range: 1-1000
# Default:
# StartPreprocessors=3

### Option: StartPollersUnreachable
#       Number of pre-forked instances of pollers for unreachable hosts (including IPMI and Java).
#       At least one poller for unreachable hosts must be running if regular, IPMI or Java pollers
#       are started.
#
# Mandatory: no
# Range: 0-1000
# Default:
#StartPollersUnreachable=1
StartPollersUnreachable=5

### Option: StartTrappers
#       Number of pre-forked instances of trappers.
#       Trappers accept incoming connections from Zabbix sender, active agents and active proxies.
#       At least one trapper process must be running to display server availability and view queue
#       in the frontend.
#
# Mandatory: no
# Range: 0-1000
# Default:
#StartTrappers=5
StartTrappers=200

### Option: StartPingers
#       Number of pre-forked instances of ICMP pingers.
#
# Mandatory: no
# Range: 0-1000
# Default:
# StartPingers=1

### Option: StartDiscoverers
#       Number of pre-forked instances of discoverers.
#
# Mandatory: no
# Range: 0-250
# Default:
#StartDiscoverers=1
StartDiscoverers=1

### Option: StartHTTPPollers
#       Number of pre-forked instances of HTTP pollers.
#
# Mandatory: no
# Range: 0-1000
# Default:
StartHTTPPollers=10

### Option: StartTimers
#       Number of pre-forked instances of timers.
#       Timers process maintenance periods.
#       Only the first timer process handles host maintenance updates. Problem suppression updates are shared
#       between all timers.
#
# Mandatory: no
# Range: 1-1000
# Default:
# StartTimers=1

### Option: StartEscalators
#       Number of pre-forked instances of escalators.
#
# Mandatory: no
# Range: 0-100
# Default:
# StartEscalators=1

### Option: StartAlerters
#       Number of pre-forked instances of alerters.
#       Alerters send the notifications created by action operations.
#
# Mandatory: no
# Range: 0-100
# Default:
# StartAlerters=3

### Option: JavaGateway
#       IP address (or hostname) of Zabbix Java gateway.
#       Only required if Java pollers are started.
#
# Mandatory: no
# Default:
# JavaGateway=

### Option: JavaGatewayPort
#       Port that Zabbix Java gateway listens on.
#
# Mandatory: no
# Range: 1024-32767
# Default:
# JavaGatewayPort=10052

### Option: StartJavaPollers
#       Number of pre-forked instances of Java pollers.
#
# Mandatory: no
# Range: 0-1000
# Default:
# StartJavaPollers=0

### Option: StartVMwareCollectors
#       Number of pre-forked vmware collector instances.
#
# Mandatory: no
# Range: 0-250
# Default:
# StartVMwareCollectors=0

### Option: VMwareFrequency
#       How often Zabbix will connect to VMware service to obtain a new data.
#
# Mandatory: no
# Range: 10-86400
# Default:
# VMwareFrequency=60

### Option: VMwarePerfFrequency
#       How often Zabbix will connect to VMware service to obtain performance data.
#
# Mandatory: no
# Range: 10-86400
# Default:
# VMwarePerfFrequency=60

### Option: VMwareCacheSize
#       Size of VMware cache, in bytes.
#       Shared memory size for storing VMware data.
#       Only used if VMware collectors are started.
#
# Mandatory: no
# Range: 256K-2G
# Default:
# VMwareCacheSize=8M

### Option: VMwareTimeout
#       Specifies how many seconds vmware collector waits for response from VMware service.
#
# Mandatory: no
# Range: 1-300
# Default:
# VMwareTimeout=10

### Option: SNMPTrapperFile
#       Temporary file used for passing data from SNMP trap daemon to the server.
#       Must be the same as in zabbix_trap_receiver.pl or SNMPTT configuration file.
#
# Mandatory: no
# Default:
# SNMPTrapperFile=/tmp/zabbix_traps.tmp

### Option: StartSNMPTrapper
#       If 1, SNMP trapper process is started.
#
# Mandatory: no
# Range: 0-1
# Default:
# StartSNMPTrapper=0

### Option: ListenIP
#       List of comma delimited IP addresses that the trapper should listen on.
#       Trapper will listen on all network interfaces if this parameter is missing.
#
# Mandatory: no
# Default:
# ListenIP=0.0.0.0

# ListenIP=127.0.0.1

### Option: HousekeepingFrequency
#       How often Zabbix will perform housekeeping procedure (in hours).
#       Housekeeping is removing outdated information from the database.
#       To prevent Housekeeper from being overloaded, no more than 4 times HousekeepingFrequency
#       hours of outdated information are deleted in one housekeeping cycle, for each item.
#       To lower load on server startup housekeeping is postponed for 30 minutes after server start.
#       With HousekeepingFrequency=0 the housekeeper can be only executed using the runtime control option.
#       In this case the period of outdated information deleted in one housekeeping cycle is 4 times the
#       period since the last housekeeping cycle, but not less than 4 hours and not greater than 4 days.
#
# Mandatory: no
# Range: 0-24
# Default:
#HousekeepingFrequency=1
HousekeepingFrequency=2

### Option: MaxHousekeeperDelete
#       The table "housekeeper" contains "tasks" for housekeeping procedure in the format:
#       [housekeeperid], [tablename], [field], [value].
#       No more than 'MaxHousekeeperDelete' rows (corresponding to [tablename], [field], [value])
#       will be deleted per one task in one housekeeping cycle.
#       If set to 0 then no limit is used at all. In this case you must know what you are doing!
#
# Mandatory: no
# Range: 0-1000000
# Default:
#MaxHousekeeperDelete=5000
MaxHousekeeperDelete=5000

### Option: CacheSize
#       Size of configuration cache, in bytes.
#       Shared memory size for storing host, item and trigger data.
#
# Mandatory: no
# Range: 128K-64G
# Default:
#CacheSize=8M
CacheSize=256M

### Option: CacheUpdateFrequency
#       How often Zabbix will perform update of configuration cache, in seconds.
#
# Mandatory: no
# Range: 1-3600
# Default:
#CacheUpdateFrequency=60
CacheUpdateFrequency=180

### Option: StartDBSyncers
#       Number of pre-forked instances of DB Syncers.
#
# Mandatory: no
# Range: 1-100
# Default:
# StartDBSyncers=4
StartDBSyncers=4

### Option: HistoryCacheSize
#       Size of history cache, in bytes.
#       Shared memory size for storing history data.
#
# Mandatory: no
# Range: 128K-2G
# Default:
#HistoryCacheSize=16M
HistoryCacheSize=64M

### Option: HistoryIndexCacheSize
#       Size of history index cache, in bytes.
#       Shared memory size for indexing history cache.
#
# Mandatory: no
# Range: 128K-2G
# Default:
HistoryIndexCacheSize=10M

### Option: TrendCacheSize
#       Size of trend cache, in bytes.
#       Shared memory size for storing trends data.
#
# Mandatory: no
# Range: 128K-2G
# Default:
#TrendCacheSize=4M
TrendCacheSize=64M

### 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=8M
ValueCacheSize=512M

### Option: Timeout
#       Specifies how long we wait for agent, SNMP device or external check (in seconds).
#
# Mandatory: no
# Range: 1-30
# Default:
# Timeout=3

Timeout=30

### Option: TrapperTimeout
#       Specifies how many seconds trapper may spend processing new data.
#
# Mandatory: no
# Range: 1-300
# Default:
# TrapperTimeout=300

### Option: UnreachablePeriod
#       After how many seconds of unreachability treat a host as unavailable.
#
# Mandatory: no
# Range: 1-3600
# Default:
#UnreachablePeriod=45
UnreachablePeriod=120

### Option: UnavailableDelay
#       How often host is checked for availability during the unavailability period, in seconds.
#
# Mandatory: no
# Range: 1-3600
# Default:
# UnavailableDelay=60

### Option: UnreachableDelay
#       How often host is checked for availability during the unreachability period, in seconds.
#
# Mandatory: no
# Range: 1-3600
# Default:
# UnreachableDelay=15

### Option: AlertScriptsPath
#       Full path to location of custom alert scripts.
#       Default depends on compilation options.
#       To see the default path run command "zabbix_server --help".
#
# Mandatory: no
# Default:
# AlertScriptsPath=${datadir}/zabbix/alertscripts

### Option: ExternalScripts
#       Full path to location of external scripts.
#       Default depends on compilation options.
#       To see the default path run command "zabbix_server --help".
#
# Mandatory: no
# Default:
# ExternalScripts=${datadir}/zabbix/externalscripts

### Option: FpingLocation
#       Location of fping.
#       Make sure that fping binary has root ownership and SUID flag set.
#
# Mandatory: no
# Default:
FpingLocation=/usr/sbin/fping

### Option: Fping6Location
#       Location of fping6.
#       Make sure that fping6 binary has root ownership and SUID flag set.
#       Make empty if your fping utility is capable to process IPv6 addresses.
#
# Mandatory: no
# Default:
Fping6Location=/usr/sbin/fping6

### Option: SSHKeyLocation
#       Location of public and private keys for SSH checks and actions.
#
# Mandatory: no
# Default:
# SSHKeyLocation=

### Option: LogSlowQueries
#       How long a database query may take before being logged (in milliseconds).
#       Only works if DebugLevel set to 3, 4 or 5.
#       0 - don't log slow queries.
#
# Mandatory: no
# Range: 1-3600000
# Default:
# LogSlowQueries=0
LogSlowQueries=3000

### Option: TmpDir
#       Temporary directory.
#
# Mandatory: no
# Default:
# TmpDir=/tmp

### Option: StartProxyPollers
#       Number of pre-forked instances of pollers for passive proxies.
#
# Mandatory: no
# Range: 0-250
# Default:
# StartProxyPollers=1

### Option: ProxyConfigFrequency
#       How often Zabbix Server sends configuration data to a Zabbix Proxy in seconds.
#       This parameter is used only for proxies in the passive mode.
#
# Mandatory: no
# Range: 1-3600*24*7
# Default:
# ProxyConfigFrequency=3600

### Option: ProxyDataFrequency
#       How often Zabbix Server requests history data from a Zabbix Proxy in seconds.
#       This parameter is used only for proxies in the passive mode.
#
# Mandatory: no
# Range: 1-3600
# Default:
# ProxyDataFrequency=1

### Option: StartLLDProcessors
#       Number of pre-forked instances of low level discovery processors.
#
# Mandatory: no
# Range: 1-100
# Default:
StartLLDProcessors=2

### Option: AllowRoot
#       Allow the server to run as 'root'. If disabled and the server is started by 'root', the server
#       will try to switch to the user specified by the User configuration option instead.
#       Has no effect if started under a regular user.
#       0 - do not allow
#       1 - allow
#
# Mandatory: no
# Default:
# AllowRoot=0

### Option: User
#       Drop privileges to a specific, existing user on the system.
#       Only has effect if run as 'root' and AllowRoot is disabled.
#
# Mandatory: no
# Default:
User=zabbix

### Option: Include
#       You may include individual files or all files in a directory in the configuration file.
#       Installing Zabbix will create include directory in /usr/local/etc, unless modified during the compile time.
#
# Mandatory: no
# Default:
# Include=

# Include=/usr/local/etc/zabbix_server.general.conf
# Include=/usr/local/etc/zabbix_server.conf.d/
# Include=/usr/local/etc/zabbix_server.conf.d/*.conf

### Option: SSLCertLocation
#       Location of SSL client certificates.
#       This parameter is used only in web monitoring.
#       Default depends on compilation options.
#       To see the default path run command "zabbix_server --help".
#
# Mandatory: no
# Default:
# SSLCertLocation=${datadir}/zabbix/ssl/certs

### Option: SSLKeyLocation
#       Location of private keys for SSL client certificates.
#       This parameter is used only in web monitoring.
#       Default depends on compilation options.
#       To see the default path run command "zabbix_server --help".
#
# Mandatory: no
# Default:
# SSLKeyLocation=${datadir}/zabbix/ssl/keys

### Option: SSLCALocation
#       Override the location of certificate authority (CA) files for SSL server certificate verification.
#       If not set, system-wide directory will be used.
#       This parameter is used only in web monitoring and SMTP authentication.
#
# Mandatory: no
# Default:
# SSLCALocation=

### Option: StatsAllowedIP
#       List of comma delimited IP addresses, optionally in CIDR notation, or DNS names of external Zabbix instances.
#       Stats request will be accepted only from the addresses listed here. If this parameter is not set no stats requests
#       will be accepted.
#       If IPv6 support is enabled then '127.0.0.1', '::127.0.0.1', '::ffff:127.0.0.1' are treated equally
#       and '::/0' will allow any IPv4 or IPv6 address.
#       '0.0.0.0/0' can be used to allow any IPv4 address.
#       Example: StatsAllowedIP=127.0.0.1,192.168.1.0/24,::1,2001:db8::/32,zabbix.example.com
#
# Mandatory: no
# Default:
# StatsAllowedIP=
StatsAllowedIP=127.0.0.1

####### LOADABLE MODULES #######

### Option: LoadModulePath
#       Full path to location of server modules.
#       Default depends on compilation options.
#       To see the default path run command "zabbix_server --help".
#
# Mandatory: no
# Default:
# LoadModulePath=${libdir}/modules

### Option: LoadModule
#       Module to load at server startup. Modules are used to extend functionality of the server.
#       Formats:
#               LoadModule=<module.so>
#               LoadModule=<path/module.so>
#               LoadModule=</abs_path/module.so>
#       Either the module must be located in directory specified by LoadModulePath or the path must precede the module name.
#       If the preceding path is absolute (starts with '/') then LoadModulePath is ignored.
#       It is allowed to include multiple LoadModule parameters.
#
# Mandatory: no
# Default:
# LoadModule=

####### TLS-RELATED PARAMETERS #######

### Option: TLSCAFile
#       Full pathname of a file containing the top-level CA(s) certificates for
#       peer certificate verification.
#
# Mandatory: no
# Default:
# TLSCAFile=

### Option: TLSCRLFile
#       Full pathname of a file containing revoked certificates.
#
# Mandatory: no
# Default:
# TLSCRLFile=

### Option: TLSCertFile
#       Full pathname of a file containing the server certificate or certificate chain.
#
# Mandatory: no
# Default:
# TLSCertFile=

### Option: TLSKeyFile
#       Full pathname of a file containing the server private key.
#
# Mandatory: no
# Default:
# TLSKeyFile=

####### For advanced users - TLS ciphersuite selection criteria #######

### Option: TLSCipherCert13
#       Cipher string for OpenSSL 1.1.1 or newer in TLS 1.3.
#       Override the default ciphersuite selection criteria for certificate-based encryption.
#
# Mandatory: no
# Default:
# TLSCipherCert13=

### Option: TLSCipherCert
#       GnuTLS priority string or OpenSSL (TLS 1.2) cipher string.
#       Override the default ciphersuite selection criteria for certificate-based encryption.
#       Example for GnuTLS:
#               NONE:+VERS-TLS1.2:+ECDHE-RSA:+RSA:+AES-128-GCM:+AES-128-CBC:+AEAD:+SHA256:+SHA1:+CURVE-ALL:+COMP-NULL:+SIGN-ALL:+CTYPE-X.509
#       Example for OpenSSL:
#               EECDH+aRSA+AES128:RSA+aRSA+AES128
#
# Mandatory: no
# Default:
# TLSCipherCert=

### Option: TLSCipherPSK13
#       Cipher string for OpenSSL 1.1.1 or newer in TLS 1.3.
#       Override the default ciphersuite selection criteria for PSK-based encryption.
#       Example:
#               TLS_CHACHA20_POLY1305_SHA256:TLS_AES_128_GCM_SHA256
#
# Mandatory: no
# Default:
# TLSCipherPSK13=

### Option: TLSCipherPSK
#       GnuTLS priority string or OpenSSL (TLS 1.2) cipher string.
#       Override the default ciphersuite selection criteria for PSK-based encryption.
#       Example for GnuTLS:
#               NONE:+VERS-TLS1.2:+ECDHE-PSK:+PSK:+AES-128-GCM:+AES-128-CBC:+AEAD:+SHA256:+SHA1:+CURVE-ALL:+COMP-NULL:+SIGN-ALL
#       Example for OpenSSL:
#               kECDHEPSK+AES128:kPSK+AES128
#
# Mandatory: no
# Default:
# TLSCipherPSK=

### Option: TLSCipherAll13
#       Cipher string for OpenSSL 1.1.1 or newer in TLS 1.3.
#       Override the default ciphersuite selection criteria for certificate- and PSK-based encryption.
#       Example:
#               TLS_AES_256_GCM_SHA384:TLS_CHACHA20_POLY1305_SHA256:TLS_AES_128_GCM_SHA256
#
# Mandatory: no
# Default:
# TLSCipherAll13=

### Option: TLSCipherAll
#       GnuTLS priority string or OpenSSL (TLS 1.2) cipher string.
#       Override the default ciphersuite selection criteria for certificate- and PSK-based encryption.
#       Example for GnuTLS:
#               NONE:+VERS-TLS1.2:+ECDHE-RSA:+RSA:+ECDHE-PSK:+PSK:+AES-128-GCM:+AES-128-CBC:+AEAD:+SHA256:+SHA1:+CURVE-ALL:+COMP-NULL:+SIGN-ALL:+CTYPE-X.509
#       Example for OpenSSL:
#               EECDH+aRSA+AES128:RSA+aRSA+AES128:kECDHEPSK+AES128:kPSK+AES128
#
# Mandatory: no
# Default:
# TLSCipherAll=

### Option: DBTLSConnect
#       Setting this option enforces to use TLS connection to database.
#       required    - connect using TLS
#       verify_ca   - connect using TLS and verify certificate
#       verify_full - connect using TLS, verify certificate and verify that database identity specified by DBHost
#                     matches its certificate
#       On MySQL starting from 5.7.11 and PostgreSQL following values are supported: "required", "verify_ca" and
#       "verify_full".
#       On MariaDB starting from version 10.2.6 "required" and "verify_full" values are supported.
#       Default is not to set any option and behavior depends on database configuration
#
# Mandatory: no
# Default:
# DBTLSConnect=

### Option: DBTLSCAFile
#       Full pathname of a file containing the top-level CA(s) certificates for database certificate verification.
#       Supported only for MySQL and PostgreSQL
#
# Mandatory: no
#       (yes, if DBTLSConnect set to one of: verify_ca, verify_full)
# Default:
# DBTLSCAFile=

### Option: DBTLSCertFile
#       Full pathname of file containing Zabbix server certificate for authenticating to database.
#       Supported only for MySQL and PostgreSQL
#
# Mandatory: no
# Default:
# DBTLSCertFile=

### Option: DBTLSKeyFile
#       Full pathname of file containing the private key for authenticating to database.
#       Supported only for MySQL and PostgreSQL
#
# Mandatory: no
# Default:
# DBTLSKeyFile=

### Option: DBTLSCipher
#       The list of encryption ciphers that Zabbix server permits for TLS protocols up through TLSv1.2
#       Supported only for MySQL
#
# Mandatory no
# Default:
# DBTLSCipher=

### Option: DBTLSCipher13
#       The list of encryption ciphersuites that Zabbix server permits for TLSv1.3 protocol
#       Supported only for MySQL, starting from version 8.0.16
#
# Mandatory no
# Default:
# DBTLSCipher13=
```