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*/5 * * * * apache php /var/www/html/cacti/poller.php &>/dev/nullCode: Select all
2020-12-07 14:50:01 - POLLER: Poller[Main Poller] NOTE: Cron is configured to run too often! The Poller Interval is '60' seconds, with a minimum Cron period of '60' seconds, but only 0.3 seconds have passed since the poller last ran.Here's the server specs:
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Date Mon, 07 Dec 2020 16:25:06 -0500
Cacti Version 1.2.15
Cacti OS unix
NET-SNMP Version NET-SNMP version: 5.7.2
RRDtool Version Configured 1.4.0+
RRDtool Version Found 1.4.8
Devices 5
Graphs 86
Data Sources Script/Command: 10
SNMP Query: 82
Total: 92
Interval 60
Type SPINE 1.2.16 Copyright 2004-2020 by The Cacti Group (Different version of Cacti and Spine!)
Items Action[0]: 102
Action[1]: 10
Total: 112
Concurrent Processes 2
Max Threads 4
PHP Servers 1
Script Timeout 25
Max OID 10
Last Run Statistics Time:0.3228 Method:spine Processes:8 Threads:12 Hosts:5 HostsPerProcess:1 DataSources:112 RRDsProcessed:0
MemTotal 7.46 G
MemFree 6.41 G
MemAvailable 6.40 G
Buffers 2.01 M
Cached 206.62 M
Active 593.45 M
Inactive 132.16 M
SwapTotal 7.69 G
SwapFree 7.69 G
PHP Version 5.4.16
PHP Version 5.5.0+ is recommended due to strong password hashing support.
PHP OS Linux
PHP uname Linux nmd-tp-cacti1 3.10.0-1160.6.1.el7.x86_64 #1 SMP Tue Nov 17 13:59:11 UTC 2020 x86_64
PHP SNMP Installed. Note: If you are planning on using SNMPv3, you must remove php-snmp and use the Net-SNMP toolset.
max_execution_time 60
memory_limit 800M
version 5.5.68-MariaDB >= 5.6 MySQL 5.6+ and MariaDB 10.0+ are great releases, and are very good versions to choose. Make sure you run the very latest release though which fixes a long standing low level networking issue that was causing spine many issues with reliability.
collation_server utf8mb4_unicode_ci = utf8mb4_unicode_ci When using Cacti with languages other than English, it is important to use the utf8mb4_unicode_ci collation type as some characters take more than a single byte.
character_set_server utf8mb4 = utf8mb4 When using Cacti with languages other than English, it is important to use the utf8mb4 character set as some characters take more than a single byte.
character_set_client utf8mb4 = utf8mb4 When using Cacti with languages other than English, it is important to use the utf8mb4 character set as some characters take more than a single byte.
max_connections 151 >= 100 Depending on the number of logins and use of spine data collector, MariaDB will need many connections. The calculation for spine is: total_connections = total_processes * (total_threads + script_servers + 1), then you must leave headroom for user connections, which will change depending on the number of concurrent login accounts.
max_allowed_packet 16777216 >= 16777216 With Remote polling capabilities, large amounts of data will be synced from the main server to the remote pollers. Therefore, keep this value at or above 16M.
max_heap_table_size 123 M >= 122.21 M If using the Cacti Performance Booster and choosing a memory storage engine, you have to be careful to flush your Performance Booster buffer before the system runs out of memory table space. This is done two ways, first reducing the size of your output column to just the right size. This column is in the tables poller_output, and poller_output_boost. The second thing you can do is allocate more memory to memory tables. We have arbitrarily chosen a recommended value of 10% of system memory, but if you are using SSD disk drives, or have a smaller system, you may ignore this recommendation or choose a different storage engine. You may see the expected consumption of the Performance Booster tables under Console -> System Utilities -> View Boost Status.
tmp_table_size 123 M >= 122.21 M When executing subqueries, having a larger temporary table size, keep those temporary tables in memory.
join_buffer_size 245 M >= 244.41 M When performing joins, if they are below this size, they will be kept in memory and never written to a temporary file.
innodb_file_per_table ON = ON When using InnoDB storage it is important to keep your table spaces separate. This makes managing the tables simpler for long time users of MariaDB. If you are running with this currently off, you can migrate to the per file storage by enabling the feature, and then running an alter statement on all InnoDB tables.
innodb_file_format Barracuda = Barracuda When using innodb_file_per_table, it is important to set the innodb_file_format to Barracuda. This setting will allow longer indexes important for certain Cacti tables.
innodb_large_prefix ON = 1 If your tables have very large indexes, you must operate with the Barracuda innodb_file_format and the innodb_large_prefix equal to 1. Failure to do this may result in plugins that can not properly create tables.
innodb_buffer_pool_size 1910 M >= 1909.49 M InnoDB will hold as much tables and indexes in system memory as is possible. Therefore, you should make the innodb_buffer_pool large enough to hold as much of the tables and index in memory. Checking the size of the /var/lib/mysql/cacti directory will help in determining this value. We are recommending 25% of your systems total memory, but your requirements will vary depending on your systems size.
innodb_doublewrite ON = ON This settings should remain ON unless your Cacti instances is running on either ZFS or FusionI/O which both have internal journaling to accomodate abrupt system crashes. However, if you have very good power, and your systems rarely go down and you have backups, turning this setting to OFF can net you almost a 50% increase in database performance.
innodb_lock_wait_timeout 50 >= 50 Rogue queries should not for the database to go offline to others. Kill these queries before they kill your system.
innodb_flush_method eq O_DIRECT Maximum I/O performance happens when you use the O_DIRECT method to flush pages.
innodb_flush_log_at_trx_commit 2 = 2 Setting this value to 2 means that you will flush all transactions every second rather than at commit. This allows MariaDB to perform writing less often.