Zabbix: LLD monitoring of disks without UserParameter and agent scripts
The idea is simple: the Zabbix server will receive everything from smartmontools through external processing and zabbix_get, parse it and pass it on to dependent elements (appeared in Zabbix 3.4). Thus, not only the number of accesses to the monitored server is reduced, but its resources are not spent, since parsing occurs on the side of the Zabbix server.
One limitation at the moment: only monitoring drives in / dev / sd * format. The format / dev / csmi *, * (Intel Matrix RAID) is not supported due to the fact that zabbix_get considers the comma as the second argument. Correct me if I am wrong.
What will be needed for implementation:
- Template
- Script
- zabbix_get on the server
- smartmontools on agents
Agent setup
The only thing that deserves attention here is the need to uncomment the EnableRemoteCommands = 1 line , otherwise the agent will not be able to accept commands.
Smartmontools
The installation is trivial and will not be considered, however, for Linux there is one need: in order to start without sudo , you need to set the SUID bit to the smartctl file. For Ubuntu, this is sudo chmod u + s / usr / sbin / smartctl .
Script
Depending on your zabbix_server.conf configuration file, you need to put this script in the appropriate directory on the Zabbix server. The default for Ubuntu is / usr / lib / zabbix / externalscripts . Do not forget to give the file permission to execute - sudo chmod 775 /usr/lib/zabbix/externalscripts/smartctl.sh .
| #! / bin / bash | |
| # 2017/12/07 AcidVenom v1.0 | |
| # Скрипт мониторинга HDD с LLD для Zabbix (серверный вариант) | |
| # Автообнаружение дисков | |
| # Ключ: discovery | |
| IFS=$'\n' | |
| JSON="{\"data\":[" | |
| SEP="" | |
| if [[ $2="discovery" ]] | |
| then | |
| get=`zabbix_get -s $1 -k system.run["smartctl --scan-open"] | grep "/dev/sd"` | |
| forhddin$get | |
| do | |
| DISKID=`echo $hdd| grep "/dev/sd"| sed "s/\/dev\///"| cut -c 1-3` | |
| if [[ `zabbix_get -s $1 -k system.run["smartctl -i /dev/$DISKID"] | grep "SMART support is: Enabled"`!="" ]] | |
| then | |
| JSON=$JSON"$SEP{\"{#DISKID}\":\"$DISKID\"}" | |
| SEP=", " | |
| fi | |
| done | |
| JSON=$JSON"]}" | |
| echo$JSON | |
| # Получение информации о дисках | |
| # Ключи: info и attr | |
| else | |
| if [[ $3="info" ]] | |
| then | |
| get=`zabbix_get -s $1 -k system.run["smartctl -x /dev/$2"]` | |
| foroutin$get | |
| do | |
| echo$out | |
| done | |
| elif [[ $3="attr" ]] | |
| then | |
| get=`zabbix_get -s $1 -k system.run["smartctl -A /dev/$2"]` | |
| foroutin$get | |
| do | |
| echo$out | |
| done | |
| fi | |
| fi |
Template
Template exported from version 3.4.4.
The following elements are already present in the template: model, family, serial number, disk size, SMART status; as well as SMART values 3, 5, 7, 9, 10, 190 (194), 196, 197, 198, 199. There are 3 triggers: two indicate high temperatures and one more about bad SMART.
| <?xml version="1.0" encoding="UTF-8"?> | |
| <zabbix_export> | |
| <version>3.4</version> | |
| <date>2017-12-27T05:26:57Z</date> | |
| <groups> | |
| <group> | |
| <name>Templates</name> | |
| </group> | |
| </groups> | |
| <templates> | |
| <template> | |
| <template>Hardware - HDD</template> | |
| <name>Hardware - HDD</name> | |
| <description>Шаблон мониторинга HDD c LLD. | |
| Серверный вариант | |
| | |
| Необходимые компоненты: | |
| smartctl.sh -> /usr/lib/zabbix/externalscripts/ | |
| smartmontools</description> | |
| <groups> | |
| <group> | |
| <name>Templates</name> | |
| </group> | |
| </groups> | |
| <applications> | |
| <application> | |
| <name>Жесткие диски</name> | |
| </application> | |
| </applications> | |
| <items/> | |
| <discovery_rules> | |
| <discovery_rule> | |
| <name>Обнаружение дисков</name> | |
| <type>10</type> | |
| <snmp_community/> | |
| <snmp_oid/> | |
| <key>smartctl.sh[{HOST.CONN},discovery]</key> | |
| <delay>1h</delay> | |
| <status>0</status> | |
| <allowed_hosts/> | |
| <snmpv3_contextname/> | |
| <snmpv3_securityname/> | |
| <snmpv3_securitylevel>0</snmpv3_securitylevel> | |
| <snmpv3_authprotocol>0</snmpv3_authprotocol> | |
| <snmpv3_authpassphrase/> | |
| <snmpv3_privprotocol>0</snmpv3_privprotocol> | |
| <snmpv3_privpassphrase/> | |
| <params/> | |
| <ipmi_sensor/> | |
| <authtype>0</authtype> | |
| <username/> | |
| <password/> | |
| <publickey/> | |
| <privatekey/> | |
| <port/> | |
| <filter> | |
| <evaltype>0</evaltype> | |
| <formula/> | |
| <conditions/> | |
| </filter> | |
| <lifetime>1d</lifetime> | |
| <description>Обнаружение подключенных дисков.</description> | |
| <item_prototypes> | |
| <item_prototype> | |
| <name>Диск {#DISKID} - Номинальная емкость</name> | |
| <type>18</type> | |
| <snmp_community/> | |
| <snmp_oid/> | |
| <key>smartctl.capacity.[{#DISKID}]</key> | |
| <delay>0</delay> | |
| <history>90d</history> | |
| <trends>0</trends> | |
| <status>0</status> | |
| <value_type>1</value_type> | |
| <allowed_hosts/> | |
| <units/> | |
| <snmpv3_contextname/> | |
| <snmpv3_securityname/> | |
| <snmpv3_securitylevel>0</snmpv3_securitylevel> | |
| <snmpv3_authprotocol>0</snmpv3_authprotocol> | |
| <snmpv3_authpassphrase/> | |
| <snmpv3_privprotocol>0</snmpv3_privprotocol> | |
| <snmpv3_privpassphrase/> | |
| <params/> | |
| <ipmi_sensor/> | |
| <authtype>0</authtype> | |
| <username/> | |
| <password/> | |
| <publickey/> | |
| <privatekey/> | |
| <port/> | |
| <description/> | |
| <inventory_link>0</inventory_link> | |
| <applications> | |
| <application> | |
| <name>Жесткие диски</name> | |
| </application> | |
| </applications> | |
| <valuemap/> | |
| <logtimefmt/> | |
| <preprocessing> | |
| <step> | |
| <type>5</type> | |
| <params>User Capacity: .*\[(.*)\] | |
| \1</params> | |
| </step> | |
| </preprocessing> | |
| <jmx_endpoint/> | |
| <application_prototypes/> | |
| <master_item_prototype> | |
| <key>smartctl.sh[{HOST.CONN},{#DISKID},info]</key> | |
| </master_item_prototype> | |
| </item_prototype> | |
| <item_prototype> | |
| <name>Диск {#DISKID} - Семейство</name> | |
| <type>18</type> | |
| <snmp_community/> | |
| <snmp_oid/> | |
| <key>smartctl.family.[{#DISKID}]</key> | |
| <delay>0</delay> | |
| <history>90d</history> | |
| <trends>0</trends> | |
| <status>0</status> | |
| <value_type>1</value_type> | |
| <allowed_hosts/> | |
| <units/> | |
| <snmpv3_contextname/> | |
| <snmpv3_securityname/> | |
| <snmpv3_securitylevel>0</snmpv3_securitylevel> | |
| <snmpv3_authprotocol>0</snmpv3_authprotocol> | |
| <snmpv3_authpassphrase/> | |
| <snmpv3_privprotocol>0</snmpv3_privprotocol> | |
| <snmpv3_privpassphrase/> | |
| <params/> | |
| <ipmi_sensor/> | |
| <authtype>0</authtype> | |
| <username/> | |
| <password/> | |
| <publickey/> | |
| <privatekey/> | |
| <port/> | |
| <description/> | |
| <inventory_link>0</inventory_link> | |
| <applications> | |
| <application> | |
| <name>Жесткие диски</name> | |
| </application> | |
| </applications> | |
| <valuemap/> | |
| <logtimefmt/> | |
| <preprocessing> | |
| <step> | |
| <type>5</type> | |
| <params>Model Family: (.*) | |
| \1</params> | |
| </step> | |
| </preprocessing> | |
| <jmx_endpoint/> | |
| <application_prototypes/> | |
| <master_item_prototype> | |
| <key>smartctl.sh[{HOST.CONN},{#DISKID},info]</key> | |
| </master_item_prototype> | |
| </item_prototype> | |
| <item_prototype> | |
| <name>Диск {#DISKID} - Версия FW</name> | |
| <type>18</type> | |
| <snmp_community/> | |
| <snmp_oid/> | |
| <key>smartctl.fw.[{#DISKID}]</key> | |
| <delay>0</delay> | |
| <history>90d</history> | |
| <trends>0</trends> | |
| <status>0</status> | |
| <value_type>1</value_type> | |
| <allowed_hosts/> | |
| <units/> | |
| <snmpv3_contextname/> | |
| <snmpv3_securityname/> | |
| <snmpv3_securitylevel>0</snmpv3_securitylevel> | |
| <snmpv3_authprotocol>0</snmpv3_authprotocol> | |
| <snmpv3_authpassphrase/> | |
| <snmpv3_privprotocol>0</snmpv3_privprotocol> | |
| <snmpv3_privpassphrase/> | |
| <params/> | |
| <ipmi_sensor/> | |
| <authtype>0</authtype> | |
| <username/> | |
| <password/> | |
| <publickey/> | |
| <privatekey/> | |
| <port/> | |
| <description/> | |
| <inventory_link>0</inventory_link> | |
| <applications> | |
| <application> | |
| <name>Жесткие диски</name> | |
| </application> | |
| </applications> | |
| <valuemap/> | |
| <logtimefmt/> | |
| <preprocessing> | |
| <step> | |
| <type>5</type> | |
| <params>Firmware Version: (.*) | |
| \1</params> | |
| </step> | |
| </preprocessing> | |
| <jmx_endpoint/> | |
| <application_prototypes/> | |
| <master_item_prototype> | |
| <key>smartctl.sh[{HOST.CONN},{#DISKID},info]</key> | |
| </master_item_prototype> | |
| </item_prototype> | |
| <item_prototype> | |
| <name>Диск {#DISKID} - Модель</name> | |
| <type>18</type> | |
| <snmp_community/> | |
| <snmp_oid/> | |
| <key>smartctl.model.[{#DISKID}]</key> | |
| <delay>0</delay> | |
| <history>90d</history> | |
| <trends>0</trends> | |
| <status>0</status> | |
| <value_type>1</value_type> | |
| <allowed_hosts/> | |
| <units/> | |
| <snmpv3_contextname/> | |
| <snmpv3_securityname/> | |
| <snmpv3_securitylevel>0</snmpv3_securitylevel> | |
| <snmpv3_authprotocol>0</snmpv3_authprotocol> | |
| <snmpv3_authpassphrase/> | |
| <snmpv3_privprotocol>0</snmpv3_privprotocol> | |
| <snmpv3_privpassphrase/> | |
| <params/> | |
| <ipmi_sensor/> | |
| <authtype>0</authtype> | |
| <username/> | |
| <password/> | |
| <publickey/> | |
| <privatekey/> | |
| <port/> | |
| <description/> | |
| <inventory_link>0</inventory_link> | |
| <applications> | |
| <application> | |
| <name>Жесткие диски</name> | |
| </application> | |
| </applications> | |
| <valuemap/> | |
| <logtimefmt/> | |
| <preprocessing> | |
| <step> | |
| <type>5</type> | |
| <params>Device Model: (.*) | |
| \1</params> | |
| </step> | |
| </preprocessing> | |
| <jmx_endpoint/> | |
| <application_prototypes/> | |
| <master_item_prototype> | |
| <key>smartctl.sh[{HOST.CONN},{#DISKID},info]</key> | |
| </master_item_prototype> | |
| </item_prototype> | |
| <item_prototype> | |
| <name>Диск {#DISKID} - Серийный номер</name> | |
| <type>18</type> | |
| <snmp_community/> | |
| <snmp_oid/> | |
| <key>smartctl.serial.[{#DISKID}]</key> | |
| <delay>0</delay> | |
| <history>90d</history> | |
| <trends>0</trends> | |
| <status>0</status> | |
| <value_type>1</value_type> | |
| <allowed_hosts/> | |
| <units/> | |
| <snmpv3_contextname/> | |
| <snmpv3_securityname/> | |
| <snmpv3_securitylevel>0</snmpv3_securitylevel> | |
| <snmpv3_authprotocol>0</snmpv3_authprotocol> | |
| <snmpv3_authpassphrase/> | |
| <snmpv3_privprotocol>0</snmpv3_privprotocol> | |
| <snmpv3_privpassphrase/> | |
| <params/> | |
| <ipmi_sensor/> | |
| <authtype>0</authtype> | |
| <username/> | |
| <password/> | |
| <publickey/> | |
| <privatekey/> | |
| <port/> | |
| <description/> | |
| <inventory_link>0</inventory_link> | |
| <applications> | |
| <application> | |
| <name>Жесткие диски</name> | |
| </application> | |
| </applications> | |
| <valuemap/> | |
| <logtimefmt/> | |
| <preprocessing> | |
| <step> | |
| <type>5</type> | |
| <params>Serial Number: (.*) | |
| \1</params> | |
| </step> | |
| </preprocessing> | |
| <jmx_endpoint/> | |
| <application_prototypes/> | |
| <master_item_prototype> | |
| <key>smartctl.sh[{HOST.CONN},{#DISKID},info]</key> | |
| </master_item_prototype> | |
| </item_prototype> | |
| <item_prototype> | |
| <name>Диск {#DISKID} - SMARTCTL Attr</name> | |
| <type>10</type> | |
| <snmp_community/> | |
| <snmp_oid/> | |
| <key>smartctl.sh[{HOST.CONN},{#DISKID},attr]</key> | |
| <delay>10m</delay> | |
| <history>1h</history> | |
| <trends>0</trends> | |
| <status>0</status> | |
| <value_type>4</value_type> | |
| <allowed_hosts/> | |
| <units/> | |
| <snmpv3_contextname/> | |
| <snmpv3_securityname/> | |
| <snmpv3_securitylevel>0</snmpv3_securitylevel> | |
| <snmpv3_authprotocol>0</snmpv3_authprotocol> | |
| <snmpv3_authpassphrase/> | |
| <snmpv3_privprotocol>0</snmpv3_privprotocol> | |
| <snmpv3_privpassphrase/> | |
| <params/> | |
| <ipmi_sensor/> | |
| <authtype>0</authtype> | |
| <username/> | |
| <password/> | |
| <publickey/> | |
| <privatekey/> | |
| <port/> | |
| <description/> | |
| <inventory_link>0</inventory_link> | |
| <applications> | |
| <application> | |
| <name>Жесткие диски</name> | |
| </application> | |
| </applications> | |
| <valuemap/> | |
| <logtimefmt/> | |
| <preprocessing/> | |
| <jmx_endpoint/> | |
| <application_prototypes/> | |
| <master_item_prototype/> | |
| </item_prototype> | |
| <item_prototype> | |
| <name>Диск {#DISKID} - SMARTCTL Info</name> | |
| <type>10</type> | |
| <snmp_community/> | |
| <snmp_oid/> | |
| <key>smartctl.sh[{HOST.CONN},{#DISKID},info]</key> | |
| <delay>10m</delay> | |
| <history>1h</history> | |
| <trends>0</trends> | |
| <status>0</status> | |
| <value_type>4</value_type> | |
| <allowed_hosts/> | |
| <units/> | |
| <snmpv3_contextname/> | |
| <snmpv3_securityname/> | |
| <snmpv3_securitylevel>0</snmpv3_securitylevel> | |
| <snmpv3_authprotocol>0</snmpv3_authprotocol> | |
| <snmpv3_authpassphrase/> | |
| <snmpv3_privprotocol>0</snmpv3_privprotocol> | |
| <snmpv3_privpassphrase/> | |
| <params/> | |
| <ipmi_sensor/> | |
| <authtype>0</authtype> | |
| <username/> | |
| <password/> | |
| <publickey/> | |
| <privatekey/> | |
| <port/> | |
| <description/> | |
| <inventory_link>0</inventory_link> | |
| <applications> | |
| <application> | |
| <name>Жесткие диски</name> | |
| </application> | |
| </applications> | |
| <valuemap/> | |
| <logtimefmt/> | |
| <preprocessing/> | |
| <jmx_endpoint/> | |
| <application_prototypes/> | |
| <master_item_prototype/> | |
| </item_prototype> | |
| <item_prototype> | |
| <name>Диск {#DISKID} - SMART - Spin-Up Time [3]</name> | |
| <type>18</type> | |
| <snmp_community/> | |
| <snmp_oid/> | |
| <key>smartctl.smart.3.[{#DISKID}]</key> | |
| <delay>0</delay> | |
| <history>90d</history> | |
| <trends>365d</trends> | |
| <status>0</status> | |
| <value_type>3</value_type> | |
| <allowed_hosts/> | |
| <units/> | |
| <snmpv3_contextname/> | |
| <snmpv3_securityname/> | |
| <snmpv3_securitylevel>0</snmpv3_securitylevel> | |
| <snmpv3_authprotocol>0</snmpv3_authprotocol> | |
| <snmpv3_authpassphrase/> | |
| <snmpv3_privprotocol>0</snmpv3_privprotocol> | |
| <snmpv3_privpassphrase/> | |
| <params/> | |
| <ipmi_sensor/> | |
| <authtype>0</authtype> | |
| <username/> | |
| <password/> | |
| <publickey/> | |
| <privatekey/> | |
| <port/> | |
| <description/> | |
| <inventory_link>0</inventory_link> | |
| <applications> | |
| <application> | |
| <name>Жесткие диски</name> | |
| </application> | |
| </applications> | |
| <valuemap/> | |
| <logtimefmt/> | |
| <preprocessing> | |
| <step> | |
| <type>5</type> | |
| <params>3 Spin_Up_Time.* - (.*) | |
| \1</params> | |
| </step> | |
| </preprocessing> | |
| <jmx_endpoint/> | |
| <application_prototypes/> | |
| <master_item_prototype> | |
| <key>smartctl.sh[{HOST.CONN},{#DISKID},attr]</key> | |
| </master_item_prototype> | |
| </item_prototype> | |
| <item_prototype> | |
| <name>Диск {#DISKID} - SMART - Reallocated Sector Count [5]</name> | |
| <type>18</type> | |
| <snmp_community/> | |
| <snmp_oid/> | |
| <key>smartctl.smart.5.[{#DISKID}]</key> | |
| <delay>0</delay> | |
| <history>90d</history> | |
| <trends>365d</trends> | |
| <status>0</status> | |
| <value_type>3</value_type> | |
| <allowed_hosts/> | |
| <units/> | |
| <snmpv3_contextname/> | |
| <snmpv3_securityname/> | |
| <snmpv3_securitylevel>0</snmpv3_securitylevel> | |
| <snmpv3_authprotocol>0</snmpv3_authprotocol> | |
| <snmpv3_authpassphrase/> | |
| <snmpv3_privprotocol>0</snmpv3_privprotocol> | |
| <snmpv3_privpassphrase/> | |
| <params/> | |
| <ipmi_sensor/> | |
| <authtype>0</authtype> | |
| <username/> | |
| <password/> | |
| <publickey/> | |
| <privatekey/> | |
| <port/> | |
| <description/> | |
| <inventory_link>0</inventory_link> | |
| <applications> | |
| <application> | |
| <name>Жесткие диски</name> | |
| </application> | |
| </applications> | |
| <valuemap/> | |
| <logtimefmt/> | |
| <preprocessing> | |
| <step> | |
| <type>5</type> | |
| <params>5 Reallocated_Sector.* - (.*) | |
| \1</params> | |
| </step> | |
| </preprocessing> | |
| <jmx_endpoint/> | |
| <application_prototypes/> | |
| <master_item_prototype> | |
| <key>smartctl.sh[{HOST.CONN},{#DISKID},attr]</key> | |
| </master_item_prototype> | |
| </item_prototype> | |
| <item_prototype> | |
| <name>Диск {#DISKID} - SMART - Seek Error Rate [7]</name> | |
| <type>18</type> | |
| <snmp_community/> | |
| <snmp_oid/> | |
| <key>smartctl.smart.7.[{#DISKID}]</key> | |
| <delay>0</delay> | |
| <history>90d</history> | |
| <trends>365d</trends> | |
| <status>0</status> | |
| <value_type>3</value_type> | |
| <allowed_hosts/> | |
| <units/> | |
| <snmpv3_contextname/> | |
| <snmpv3_securityname/> | |
| <snmpv3_securitylevel>0</snmpv3_securitylevel> | |
| <snmpv3_authprotocol>0</snmpv3_authprotocol> | |
| <snmpv3_authpassphrase/> | |
| <snmpv3_privprotocol>0</snmpv3_privprotocol> | |
| <snmpv3_privpassphrase/> | |
| <params/> | |
| <ipmi_sensor/> | |
| <authtype>0</authtype> | |
| <username/> | |
| <password/> | |
| <publickey/> | |
| <privatekey/> | |
| <port/> | |
| <description/> | |
| <inventory_link>0</inventory_link> | |
| <applications> | |
| <application> | |
| <name>Жесткие диски</name> | |
| </application> | |
| </applications> | |
| <valuemap/> | |
| <logtimefmt/> | |
| <preprocessing> | |
| <step> | |
| <type>5</type> | |
| <params>7 Seek_Error_Rate.* - (.*) | |
| \1</params> | |
| </step> | |
| </preprocessing> | |
| <jmx_endpoint/> | |
| <application_prototypes/> | |
| <master_item_prototype> | |
| <key>smartctl.sh[{HOST.CONN},{#DISKID},attr]</key> | |
| </master_item_prototype> | |
| </item_prototype> | |
| <item_prototype> | |
| <name>Диск {#DISKID} - SMART - Power-on Time Count [9]</name> | |
| <type>18</type> | |
| <snmp_community/> | |
| <snmp_oid/> | |
| <key>smartctl.smart.9.[{#DISKID}]</key> | |
| <delay>0</delay> | |
| <history>90d</history> | |
| <trends>365d</trends> | |
| <status>0</status> | |
| <value_type>3</value_type> | |
| <allowed_hosts/> | |
| <units/> | |
| <snmpv3_contextname/> | |
| <snmpv3_securityname/> | |
| <snmpv3_securitylevel>0</snmpv3_securitylevel> | |
| <snmpv3_authprotocol>0</snmpv3_authprotocol> | |
| <snmpv3_authpassphrase/> | |
| <snmpv3_privprotocol>0</snmpv3_privprotocol> | |
| <snmpv3_privpassphrase/> | |
| <params/> | |
| <ipmi_sensor/> | |
| <authtype>0</authtype> | |
| <username/> | |
| <password/> | |
| <publickey/> | |
| <privatekey/> | |
| <port/> | |
| <description/> | |
| <inventory_link>0</inventory_link> | |
| <applications> | |
| <application> | |
| <name>Жесткие диски</name> | |
| </application> | |
| </applications> | |
| <valuemap/> | |
Read Next Gravis Ultrasound Max: how 90s sound cards changed the IT market | CaseAnalysis of the technical implementation of multimedia shows with Gravis Ultrasound Max and Roland A-33. Lessons for modern developers. Learn how low-level solutions created the "wow" effect. 90% Claude Code repositories without stars: dashboardAnalysis of 20 million Claude Code commits: 90% in low-star repositories. Growth, languages, internal Anthropic data. For developers: facts about AI coding on GitHub. Explore the dashboard. Unreal Engine 2026 Courses: top for GameDevUE5 Courses Comparison: from 2 to 14 months, prices, junior/middle salaries. Choose a program with C++, AI and employment for GameDev start. Detailed guide. Product certification: integration into lifecycleLearn how to embed conformity assessment into development and production. Reduce risks, timelines and certification costs. Practical examples for engineers. Dialog management in Python via JSON configDeclarative approach to wizards in Python. Configuring steps, conditional visibility and integration with aiogram 3 without nested if. Read the guide. DevGlossary: glossary of terms for developersExplore DevGlossary — Markdown glossary of engineering terms by topics: OOP, Concurrency, Databases. Precise definitions, examples, concept connections. Download the repository and systematize knowledge for middle/senior level. Gradient Descent and Backpropagation in Neural Networks: CUDA/C++Deep dive into gradient descent and backpropagation. Implementation of neural network training algorithms from scratch on CUDA/C++ for MNIST. Detailed breakdown of mathematics and code. Clouds in UE5: Photoshop textures and shadersStep by step create realistic clouds for games: from Photoshop stencils to UE5 materials with Flow Map. Ideal for indie developers. Start right now! AI-music: Spotify and Universal Music introduced a paid modelSpotify and UMG legalized AI covers and remixes for premium subscribers. Who will win and who will lose from the new paid model? Detailed analysis. Hypothesis Testing in Statistics: Basics and ErrorsBreakdown of Statistical Hypothesis Testing: H0, H1, Type I and Type II Errors, Test Power. Experiment Planning for data science. Learn how to avoid typical mistakes in A/B tests. Recently ViewedShare this article |