Collectd Versions Save

collectd: Fix BaseDir option. Thanks to Mariusz Białończyk and @rpv-tomsk. #2857 collectd: improve error handling, check return values. Thanks to @octo. Build System: use kstat.h, when available. Thanks to Dagobert Michelsen and @rpv-tomsk. #2784 Build System: Fix distcheck on MacOS. Thanks to @rubenk. Build System: add missing include of "collectd.h" to fix builds on Solaris. Thanks to @rpv-tomsk. Build System: add endianess checks for AIX, fix GCC issue on Mac byteorder, fix byteorder on Solaris, add fallback for endianess conversion. Thanks to Dagobert Michelsen (multiple cherry picks from master). Build System: Out-of-tree builds have been fixed. Thanks to @octo. #2602 Configuration: Error handling in the config parsing code has been improved. Thanks to @octo. Documentation: Fix typo in collectd.conf(5). Thanks to @rpv-tomsk. #2760 Documentation: update note on dpdkstat. Thanks to @maryamtahhan. #2613 Various plugins: Errors found by the static code analysis tool Coverity were fixed. Thanks to @octo. #2559, #2560, #2561, #2562, #2563, #2565, #2568, #2575, #2579, #2580, #2588, #2589 Ceph plugin: A segfault has been fixed. Thanks to Aleksei Zakharov and Matthias Runge. #2572 DF plugin: fix memory leak in error case. Thanks to Takahashi tsc. Exec plugin: check return value of plugin_thread_create(). Thanks to @octo. Exec plugin: Handling of large groups has been fixed. Thanks to Sridhar Mallem. #2696 Exec plugin: Incorrect use of putenv(3) has been fixed. Thanks to Daniel Vrátil. Exec plugin: A deadlock related to setting environment variables after fork() has been fixed. Thanks to Daniel Vrátil. Intel PMU plugin: add core groups feature. Thanks to Kamil Wiatrowski. #2681 Intel PMU plugin: fix compatibility issue with collectd 5.8. Thanks to Kamil Wiatrowski. Intel PMU plugin: fix possible NULL pointer dereference. Thanks to Kamil Wiatrowski. #2676 IPMI plugin: A segfault caused by a wrong data type has been fixed. Thanks to Mariusz Szafrański. #2742 IPMI plugin: The sensor configuration option has been fixed. Thanks to @rpv-tomsk. #2629 memcached plugin: A deadlock situation has been fixed. Thanks to @rpv-tomsk. #2612 NFS plugin: Support for NFSv4 has been fixed. Thanks to Jan-Philipp Litza. #2076 NTPd plugin: A memory leak in the error handling path has been fixed. Thanks to @rubenk. #2942 OVS Stats plugin: A deadlock situation has been fixed. Thanks to Volodymyr Mytnyk. #2590 OVS Stats plugin: Fix reconnect after thread terminated. Thanks to Volodymyr Mytnyk and @maryamtahhan. #2574 Perl plugin: A compilation failure has been fixed. Thanks to @rpv-tomsk. #2732 Perl plugin: Fix exporting notification meta data. Thanks to @octo. RRDtool plugin: Handling of very large GAUGE metrics has been fixed. Thanks to Miroslav Lichvar. #2566 Tail plugin: Several regressions have been fixed. Thanks to @rpv-tomsk. #2535, #2587, #2611 turbostat plugin: A potential segfault due to an incorrect free() has been fixed. Thanks to @rubenk. #2948 UUID plugin: Fix hostname setting. Thanks to @rpv-tomsk. #2723 virt plugin: A segfault during error handling has been fixed. Thanks to @rubenk. {{Issue|2919]} Write Kafka plugin: A build failure due to a deprecated API call has been fixed. Thanks to @rpv-tomsk. #2607, #2628, #2640 Write Prometheus plugin: Fix MHD_USE_INTERNAL_POLLING_THREAD flag in newer libmicrohttpd. Thanks to @rpv-tomsk. #2849 Write Prometheus plugin: set SO_REUSEADDRESS on listening socket. Thanks to @rpv-tomsk. #2570, #2673

collectd: The core daemon is now completely licensed under the MIT license. collectd: Added daemon option to avoid making BaseDir. Thanks to Nathaniel Wesley Filardo and @octo. #2422 collectd: Global variables have been moved to their own module to make porting collectd easier. Thanks to Sean Campbell. #2467 collectd as well as Apache, memcached, OpenLDAP, Perl, RouterOS, SNMP, Tail-CSV plugins: Free userdata for plugin_register_complex_read(). Thanks to @rpv-tomsk. #2349 Collectd client library: Added parsing and server code. Thanks to @octo. #2258 Build system: Dependency on libltdl has been removed, support for libtool 1 has been dropped. Thanks to @rubenk. #1898 Build system: The build system has been switched to non-recursive make. Thanks to @rubenk. #2085 APC UPS plugin: The plugin's configuration is now optional. Without a <Plugin /> block reasonable defaults will be used. Thanks to @rpv-tomsk. #2351 Chrony plugin: Several issues found when working with a stratum-1 server have been fixed. Thanks to Miroslav Lichvar. #2190 Ceph plugin: Support for the Ceph version "Luminous" has been added. Thanks to Aleksei Zakharov. #2464 CPU plugin : Linux-specific "guest" states have been added. Thanks to Xavier G. #2439 cURL plugin, cURL-JSON, cURL-XML, DBI, FileCount, memcachec, Oracle, PostgreSQL, Table, Tail, Tail CSV plugins: The ability to configure the plugin field of generated metrics has been added. Thanks to @rpv-tomsk. #1944, #1681, #1558 cURL-JSON plugin: Parsing of arrays has been fixed. Thanks to @octo. #2281 DPDKEvents plugin: This new plugin reports link status and keep alive events. Thanks to Maryam Tahhan, Harry van Haaren, Serhiy Pshyk, Kim-Marie Jones, Krzysztof Matczak, Przemyslaw Szczerbik, Christian Ehrhardt and Luca Boccassi. #2157, #2348, #2400, #2405, #2417 DPDKStat plugin: The plugin has been refactored to make DPDK related utility functions reusable. Thanks to Krzysztof Matczak, Przemyslaw Szczerbik, Christian Ehrhardt and Luca Boccassi. #2130, #2348, #2400, #2405, #2417 DPDKStat plugin: The LogLevel and RteDriverLibPath config options have been added. Thanks to Jiri Prokes. #2505 Email plugin as well as Exec and Unixsock plugins: Use _SC_GETPW_R_SIZE_MAX. Thanks to @octo. #2451 FileCount plugin: Custom values for reported plugin, type and type instance. Thanks to @rpv-tomsk. #1979 GenericJMX plugin: Support for AtomicInteger and AtomicLong has been added. Thanks to Pierre Mauduit. #2158 gRPC plugin: Support for meta data has been added. Thanks to Taylor Cramer. #2378 IPC plugin: Fixed failed compilation on AIX. Thanks to @rpv-tomsk. #2357 Intel PMU plugin: This new plugin collects CPU performance metrics using Intel's Performance Monitoring Unit (PMU). Scaling information added to metadata. Thanks to Serhiy Pshyk and Roman Korynkevych. #2276, #2398, #2374 Intel RDT plugin: Support for collectd's logging infrastructure has been added. PQoS monitoring groups are being reset on start-up to fix potential previous unclean shutdowns. Thanks to Roman Korynkevych. #2089. IPMI plugin: Support for System Event Log (SEL) has been added. Thanks to Roman Korynkevych. #2091 IPMI plugin: Support for remote IPMI controllers has been added. Thanks to @rpv-tomsk. #2024 LVM plugin: A check for the CAP_SYS_ADMIN capability has been added. This will give users an informative warning when the process is not running with the required privileges for this plugin. Thanks to @octo. #2426, #2499 mcelog plugin: This new plugin subscribes to Machine Check Exceptions (MCE) and dispatches notifications. Metadata reset. Thanks to Maryam Tahhan, Volodymyr Mytnyk, Taras Chornyi, Krzysztof Matczak and Roman Korynkevych. #2003, #2246, #2380 MQTT plugin: Add support for TLS in Subscriber blocks. Thanks to @octo. #2434 memcached plugin: Persistent connections have been implemented. Fix hit ratio reporting, add connections rate report. Thanks to @rpv-tomsk. #2388, #2385 memcached plugin: The type of the listen_disabled metric has been changed to total_events. Thanks to @octo. #2386, #2468 Netlink plugin: The dropped packets metric has been added. Thanks to Denys Fedoryshchenko. #2053 NFS plugin: Support for NFS 4.2 metrics has been added. Thanks to Marek Becka. #2369 NFS plugin: Config options to ignore specified NFS versions have been added. Thanks to Christian Bartolomäus. #2430 NUT plugin: The ConnectTimeout, ForceSSL, VerifyPeer and CAPath options have been added. Thanks to @rpv-tomsk and Steven Bell. #2145, #2354 OpenLDAP plugin: A segfault after a connection failure has been fixed. Thanks to @rpv-tomsk. #2377 Openvpn plugin: Added support for status files from latest OpenVPN-2.4 and possible from future versions. Thanks to @rpv-tomsk. #2352 OVS Events plugin: This new plugin reports link state changes from Open vSwitch (OVS). Thanks to Volodymyr Mytnyk. #1971 OVS Stats plugin: This new plugin reports bridge / interface statistics from Open vSwitch (OVS). Thanks to Volodymyr Mytnyk and Taras Chornyi. #2137 Perl plugin: Bugfix, added check of proper interpreter initialization. Thanks to @rpv-tomsk. #2391 PostgreSQL plugin: The plugin now sets the application_name parameter when connecting to the database. Thanks to daniacs. #2497 Processes plugin: The I/O operations reported for selected processes has been fixed. The metric ps_disk_octets has been renamed to io_octets because it actually contains the number of I/O operation by the process, not just disk related I/O. Same for io_ops (previously ps_disk_ops). The new metric disk_octets has been added and is reporting disk I/O only. Add option to collect the count of active memory maps for Linux processes. The CollectFileDescriptor and CollectContextSwitch options have been added. Thanks to @rpv-tomsk and to Wilfried Goesgens. #2232, #2454, #1989 Processes and TCPConns plugins: The OpenBSD implementation has been changed to use kvm_openfiles with KVM_NO_FILES. Thanks to Jeremie Courreges-Anglas. #2061 Python plugin: Extend Notification class to include metadata. Thanks to Volodymyr Mytnyk. #2135 Python plugin: The CollectdException class has been added. This allows to throw an exception without a stack trace being logged. Thanks to Sven Trenkel. #2330, #2346 Sensors plugin: Support for (electrical) current has been added. Thanks to Clemens Gruber. #2255 SNMP plugin: Error handling has been improved: a potential double-free is now avoided (potentially leaking memory) and handling of non-failing subtrees has been fixed. Thanks to @rpv-tomsk. #2449 SNMP plugin: The Timeout and Retries config options have been added. Thanks to Carlos Vicente. #1472, #2488 SNMP Agent plugin: This new plugin implements an SNMP AgentX subagent that receives and handles queries from SNMP master agent and returns configured metrics. Thanks to Roman Korynkevych, Serhiy Pshyk and @rpv-tomsk. #2105, #2362 Synproxy plugin: This new plugin provides statistics for Linux SYNPROXY. Thanks to Marek Bečka. #2381 Tail plugin: Allow the calculation of several distributions in one "tail" instance through a "bucket" type. Thanks to @rpv-tomsk. #2442 Turbostat plugin: Import msr-index.h header from Linux and better support for mutliple packages. Thanks to Vincent Brillault. #2445, #2446 Uptime plugin: Changed implementation to read from /proc/uptime instead of /proc/stat. Update for Linux and AIX, uptime is read directly using a system call. Update for BSD and Solaris, uptime is calculated by subtracting boot time from current time. Thanks to Ivan Kurnosov and Marcin Jurkowski. #2431, #2034 UUID plugin: Support for libhal has been removed. Thanks to @rubenk. #2080 Varnish plugin: Extended the varnish plugin with varnish-plus counters. Fixed invalid data source type. Thanks to Denes Matetelki. #2453, #2463 virt plugin: The plugin has been updated to use virConnectListAllDomains(). Thanks to Denis Silakov. #2051 virt plugin: Support for domain tags has been added. Thanks to Francesco Romani. #2048 virt plugin: Connection handling has been improved. Thanks to Francesco Romani. #2100, #2101 virt plugin: Many metrics have been added, including disk, hypervisor CPU usage, performance monitoring events, domain state, CPU pinning (affinity), file system, and job statistics. Thanks to Francesco Romani and Przemyslaw Szczerbik. #2103, #2175, #2168 Write Graphite plugin: Additional tests have been added. Thanks to @octo. Write HTTP plugin: The Attribute and TTL options for the KairosDB format have been added. Implementation of "Prefix" option. Thanks to jaroug, Denis Pompilio and '' @rpv-tomsk. #2199, #2252, #2482 Write MongoDB plugin: Memory leaks have been fixed. Thanks to Saikrishna Arcot. #2307 Write Prometheus plugin: Label values are now properly escaped. Thanks to @octo. #2035 Write Redis plugin: Add max_set_duration to set duration for value. Thanks to Tomofumi Hayashi. #2440 Write Riemann plugin: Export times with microsecond resolution. Thanks to mcorbin. #2315 Write TSDB plugin: The options ResolveInterval and ResolveJitter have been added to control DNS lookup behavior. This prevents DNS flooding in case TSDB is not available. Thanks to Yves Mettier and @octo. #2059 ZFS ARC plugin: Header lines are now ignored in the Linux implementation. Thanks to YmrDtnJu. #2097

collectd: support for boolean string config values has been reintroduced. Thanks to @tokkee. #2083, #2098 collectd: The capability checking has been changed to use cap_get_proc(). Thanks to @mfournier. #2151 Documentation: A section documenting ignore lists has been added to collectd.conf(5). Thanks to @octo. AMQP plugin: The ExchangeType option is now also valid for publishers. Thanks to @octo. #2286 Apache, Ascent, BIND, cURL, cURL-JSON, cURL-XML, nginx, Write HTTP plugins: Handling of URLs that redirect elsewhere has been fixed. Thanks to @rpv-tomsk. #2328 BIND plugin: Fix parsing of the sample time provided by BIND. Previously, the time was assumed to be in the local time zone when in fact it was in UTC. Thanks to Ed Ravin. #1268 BIND plugin: Memory leaks have been fixed. Thanks to @rubenk. #2303 Chrony plugin: Build flags have been fixed. Thanks to Thomas Jost and @mfournier. #2133 cURL-JSON plugin: The timeout value has been changed to default to the collection interval. This fixes a regression. Thanks to @mfournier. cURL-JSON plugin: Handling of arrays has been fixed. Thanks to @octo. #2266 DBI plugin: Memory leaks at shutdown have been fixes. Thanks to @rpv-tomsk and @octo. E-Mail, Exec, UnixSock plugins: Group ID lookup on systems with many groups has been fixed. Thanks to @rubenk and @octo. #2208 IPC plugin: A compilation error on AIX has been fixed. Thanks to @rpv-tomsk. #2305 LogFile plugin: If writing to the file fails, print log messages on STDERR instead. Thanks to @mfournier. Log Logstash plugin: If writing the log entry fails, print it to STDERR instead. Thanks to @mfournier. memcachec, Tail plugins: A resource leak in the matching infrastructure has been fixed. Thanks to Krzysztof Matczak. #2192 MQTT plugin: Invalid symbols in topic names are now replaced and a resource leak has been fixed. Thanks to Denys Fedoryshchenko. #2123 Network plugin: A potential endless-loop has been fixed. This can be triggered remotely by sending a signed network packet to a server which is not set up to check signatures. Thanks to Marcin Kozlowski and @rpv-tomsk. #2174, #2233, CVE-2017-7401 Network plugin: A use-after-free has been fixed. Thanks to @rpv-tomsk. #2375 Notify Email plugin: The plugin is no longer explicitly linked against libssl and libcrypto, relies on libesmtp being linked correctly. Thanks to @mfournier. Debian#852924 NTPd plugin: Calculation of loop offset and error has been fixed. Thanks to Neil Wilson. #2188 OpenLDAP plugin: An incorrect use of the ldap library, leading to a crash, has been fixed. Thanks to @mfournier. #2331 Perl plugin: A potential double-free has been fixed. Thanks to @octo. #2278 Perl plugin: Print an error when an incorrect configuration is encountered. Thanks to @rpv-tomsk. #927 RRDtool plugin: Incorrect handling of the flushes timeout option has been fixed. Handling of the RandomTimeout has been fixed. Thanks to @rpv-tomsk. #2363 SMART plugin: Some warning messages have been removed and the code has been cleaned up. Thanks to @octo. #2062 SMART plugin: A check for the CAP_SYS_RAWIO capability has been added. Thanks to @mfournier. SNMP plugin: A double free has been fixed. Thanks to @rpv-tomsk. #2291 Write Graphite plugin: Error handling in the case that calculating a metric's rate fails has been improved. Previously, the raw counter values were sent to Graphite. Thanks to Iain Buclaw. #2209 Write Kafka plugin: A 32 bit random number is now used when formatting a random key. Thanks to @octo. #2074

Build system: The Notify Email plugin is no longer linked with indirect dependencies. Thanks to @mfournier. collectd: A race condition when calculating a metric's rate has been fixed. Thanks to @octo. #1193 AMQP, Exec, UnixSock, Write Kafka plugins: Parsing of the PUTVAL command with multiple values has been fixed. Thanks to @octo. #2274 AMQP plugin: The ExchangeType option is now also valid for publishers. Thanks to @octo. #2286 BIND plugin: Fix parsing of the sample time provided by BIND. Previously, the time was assumed to be in the local timezone when in fact it was in UTC. Thanks to Ed Ravin. #1268 BIND plugin: Memory leaks have been fixed. Thanks to @rubenk. #2303 cURL-JSON plugin: Handling of arrays has been fixed. Thanks to @octo. #2266 DPDKStat plugin: Error handling during initialization has been improved. Thanks to @rubenk. DPDKStat plugin: Handling of a number of metrics has been improved, for example rx_q0bytes. Thanks to Przemyslaw Szczerbik. #2167 Intel RDT plugin: Configuration handling has been changed to be more graceful. Thanks to Maryam Tahhan. #2165 Log Logstash plugin: If writing the log entry fails, print it to STDERR instead. Thanks to @mfournier. LogFile plugin: If writing to the file fails, print log messages on STDERR instead. Thanks to @mfournier. memcachec, Tail plugins: A resource leak in the matching infrastructure has been fixed. Thanks to Krzysztof Matczak. #2192 MQTT plugin: Invalid symbols in topic names are now replaced and a resource leak has been fixed. Thanks to Denys Fedoryshchenko. #2123 Network plugin: A potential endless-loop has been fixed. This can be triggered remotely by sending a signed network packet to a server which is not set up to check signatures. Thanks to Marcin Kozlowski and @rpv-tomsk. #2174, #2233, CVE-2017-7401 Perl plugin: A potential double-free has been fixed. Thanks to @octo. #2278 Processes plugin: A compilation error on AIX has been fixed. Thanks to @rpv-tomsk. #2210 SMART plugin: A check for the CAP_SYS_RAWIO capability has been added. Thanks to @mfournier. Write Graphite plugin: Error handling in the case that calculating a metric's rate fails has been improved. Previously, the raw counter values were sent to Graphite. Thanks to Iain Buclaw. #2209 Write Prometheus plugin: An incorrect use of realloc(3) has been fixed. Thanks to @octo. #2275

collectd: Handling of boolean configuration options has been unified. Thanks to @tokkee. #2083, #2098 collectd: Reporting of internal statistics has been fixed. Thanks to @octo. #2108 collectd, various plugins: Bugs and issues reported by scan-build and coverity-scan have been fixed. Thanks to @rubenk and @octo. Build system: Parallel build have been fixed. Thanks to @rubenk. #2110 DPDKStat plugin: Portability issues and a double-close bug have been fixed. Thanks to @rubenk and @mfournier. [Intel RDT plugin](https://collectd.org/wiki/index.php/Plugin:Intel RDT): A check for the libpqos library version has been added. Thanks to Serhiy Pshyk. NetApp plugin: Compilation problems have been corrected. Thanks to @octo. #2120 [Write Prometheus plugin](https://collectd.org/wiki/index.php/Plugin:Write Prometheus): A memory leak has been fixed. Thanks to @rubenk.

Documentation: The Turbostat plugin section has been improved. Thanks to @octo Documentation: The semantics of the TypesDB option have been improved. Thanks to @octo. collectd: A generic interface for parsing the text protocol has been added. Thanks to @tokkee. #1749 collectd: Threads now get named, making them easier to track using tools such as top, ps, etc. Thanks to Manuel Luis Sanmartín Rozada and @mfournier. #547 AMQP plugin, [Write Graphite plugin](https://collectd.org/wiki/index.php/Plugin:Write Graphite), [Write Kafka plugin](https://collectd.org/wiki/index.php/Plugin:Write Kafka): The new [Graphite]PreserveSeparator option allows retaining the default dot separator rather than escaping it. Thanks to @octo. #419 Battery plugin: A StateFS backend for gathering statistics has been added. Thanks to Rinigus. #1795 CPU plugin: CPU aggregation on AIX was fixed. Thanks to Chao Yang. #1957 Collectd::Unixsock: Fractional seconds support has been made more robust. Thanks to Matthias Bethke. #2052 DPDKStat plugin: This new plugin collects DPDK interface statistics. Thanks to Maryam Tahhan, Harry van Haaren, Taras Chornyi and Kim Jones. #1649 gRPC plugin: The DispatchValues option has been renamed to PutValues. Thanks to @octo. HDDTemp plugin: The 32 devices limit has been removed. Thanks to Benjamin Gilbert. #631 Hugepages plugin: This new plugin reports the number of used and free hugepages on Linux. Thanks to Jaroslav Safka, Maryam Tahhan, Kim Jones and @octo. #1799 [Intel RDT plugin](https://collectd.org/wiki/index.php/Plugin:Intel RDT): This new plugin collects statistics exposed by Intel's Resource Director Technology . Thanks to SerhiyX. #1970 memcached plugin: The new Address option allows connecting to a different server than specified by the Host option. Thanks to Pavel Rochnyack. #1975 nginx plugin: Support for reporting failed connections has been added. Thanks to Pavel Rochnyack. #1609 Perl plugin: Significant internal reworking has been made. The new RegisterLegacyFlush option has been added. Thanks to Pavel Rochnyack. #1731 PostgreSQL plugin: Timestamps are now RFC 3339-formatted local time. Thanks to Igor Peshansky and Dave Cunningham. #1918 Processes plugin: Internal performance improvements have been made. Thanks to Pavel Rochnyack. #1980, #1981 RRDCacheD plugin: The plugin now tries to reconnect upon failed operations. Thanks to @tokkee. #1959 SpamAssassin: The plugin can now run in Perl's "tainted mode" (-T). Thanks to Akos Vandra. #1962 Tail plugin: Support for calculating latency distribution of matching values has been added. Thanks to Pavel Rochnyack and @octo. #1700 Tail plugin: The new GaugePersist option has been added. Thanks to @octo. #2015 Target:Set, Target:Replace, Match:RegEx: MetaData support has been added . Thanks to Igor Peshansky. #1922, #1923, #1930 turbostat plugin: The new LogicalCoreNames option allows switching to per-core naming rather than per-CPU. Thanks to Brock Johnson. #2056 virt plugin: The new BlockDeviceFormat and BlockDeviceFormatBasename options help controlling the names reported for block-device metrics. Thanks to Deyan Chepishev. #2004 [Write Graphite plugin](https://collectd.org/wiki/index.php/Plugin:Write Graphite): A new DropDuplicateFields option has been added. Thanks to Michael Leinartas. #1915 [Write Kafka plugin](https://collectd.org/wiki/index.php/Plugin:Write Kafka): The Key Random setting has been reintroduced. Thanks to @octo. #1977 [Write Log plugin](https://collectd.org/wiki/index.php/Plugin:Write Log): Support for formatting output in JSON has been added, using the new Format configuration option. Thanks to Igor Peshansky. #1924 [Write Prometheus plugin](https://collectd.org/wiki/index.php/Plugin:Write Prometheus): This new plugin publishes values using an embedded HTTP server, in a format compatible with Prometheus' collectd_exporter. Thanks to @octo. #1967

collectd: A compile error on AIX has been fixed: MSG_DONTWAIT is not available on AIX. Thanks to Chao Yang. collectd: The capability checking has been rewritten to be more portable. Thanks to @octo. #2009 collectd.conf(5): Various typos have been fixed. Thanks to @mfournier. collectd-tg: Incorrect usage of nanosleep() has been fixed which caused the tool to sleep (almost) indefinitely. Thanks to @octo. Build system: Detection of the Java environment has been made deterministic to allow for reproducible builds. Thanks to @mfournier. #1523 Build system: Detection of the Lua headers has been improved. Thanks to @rubenk. [APC UPS plugin](https://collectd.org/wiki/index.php/Plugin:APC UPS): Unavailable metrics are now skipped instead of reported as 0 (zero). Thanks to @octo. #2025 Modbus plugin: Build issues on FreeBSD have been fixed. Thanks to @octo. OpenVPN plugin: Gracefully handle empty configurations. Thanks to Pavel Rochnyack. #1932 PowerDNS plugin: The "recursor command" has been fixed so PowerDNS can correctly parse all requested fields. Thanks to @rubenk. [Write Graphite](https://collectd.org/wiki/index.php/Plugin:Write Graphite) and AMQP plugins: A bug that could lead to a missing null-termination has been fixed. Thanks to Markus Linnala. [Write HTTP plugin](https://collectd.org/wiki/index.php/Plugin:Write HTTP): A logic error when checking the correctness of the data set has been fixed. Thanks to Pavel Rochnyack. #1996 [Write Kafka plugin](https://collectd.org/wiki/index.php/Plugin:Write Kafka): The Key Random config option has been fixed. Thanks to @octo. #1977 [Write Kafka plugin](https://collectd.org/wiki/index.php/Plugin:Write Kafka): Support for librdkafka 0.9.0 has been added. Thanks to @octo. [Write Riemann plugin](https://collectd.org/wiki/index.php/Plugin:Write Riemann): Build issues on Solaris have been fixed. Thanks to @octo. [ZFS ARC plugin](https://collectd.org/wiki/index.php/Plugin:ZFS ARC): A duplicate metric has been removed. Thanks to @rubenk. #1963

collectd: Write threads are stopped before shutdown callbacks are called. Thanks to @octo. #1110 collectd: A compile error on AIX has been fixed: MSG_DONTWAIT is not available on AIX. Thanks to Chao Yang. libcollectdclient: Lines printed to STDERR are now guarded by the environment variable COLLECTD_TRACE. Thanks to @octo. #105 collectd.conf(5): Various typos have been fixed. Thanks to @mfournier. Build system: Detection of the Java environment has been made deterministic to allow for reproducible builds. Thanks to @mfournier. #1523 [APC UPS plugin](https://collectd.org/wiki/index.php/Plugin:APC UPS): Unavailable metrics are now skipped instead of reported as 0 (zero). Thanks to @octo. #2025 Battery plugin: The minimum value has been removed from the power type to allow the plugin to report discharging batteries as negative power. Thanks to @octo. DBI, Oracle and PostgreSQL plugins: An error message when the type instance is truncated has been added. Thanks to @octo. #4 cURL-JSON plugin: A possible segmentation fault when parsing unexpected JSON has been fixed. Thanks to @octo. #1896 DF plugin: Compilation with xfsprogs ≥ 4.7.0 has been fixed. Thanks to Thomas Deutschmann. #1877 Modbus plugin: Build issues on FreeBSD have been fixed. Thanks to @octo. Network plugin: An error message has been corrected. Thanks to @octo. Network plugin: Handling of errors form secure memory initialization has been improved: the plugin fails gracefully now instead of calling abort(). Thanks to @tokkee. Network plugin: The gcrypt library is only initialized when it is actually required due to the network plugin's configuration. Thanks to @octo. #1902 Ping plugin: The init callback has been changed to be idempotent, fixing errors being reported on Solaris. Thanks to @octo. #869 PostgreSQL plugin: The query_plans and query_plans_by_table queries have been improved to return 0 (zero) instead of NULL when not available. Thanks to Bernd Zeimetz. #1905 PowerDNS plugin: The "recursor command" has been fixed so PowerDNS can correctly parse all requested fields. Thanks to @rubenk. Python plugin: Handling of data sets with multiple data sources of different type has been fixed. Thanks to @tokkee. RRDCacheD plugin: Reconnection behavior after failed operations has been added. Thanks to @tokkee. Debian#657877 [Write Graphite](https://collectd.org/wiki/index.php/Plugin:Write Graphite) and AMQP plugins: A bug that could lead to a missing null-termination has been fixed. Thanks to Markus Linnala. [Write Kafka plugin](https://collectd.org/wiki/index.php/Plugin:Write Kafka): Support for librdkafka 0.9.0 has been added. Thanks to @octo. [Write Riemann plugin](https://collectd.org/wiki/index.php/Plugin:Write Riemann): Build issues on Solaris have been fixed. Thanks to @octo.

Build system: Unnecessary linking of the [Write Graphite plugin](https://collectd.org/wiki/index.php/Plugin:Write Graphite) with libyajl has been removed. Thanks to @mfournier. Debian#839771, #1976 collectd: A bug in the FlushInterval option that caused a segmentation fault in the [Write HTTP plugin](https://collectd.org/wiki/index.php/Plugin:Write HTTP) has been fixed. Thanks to @octo. #1954 Apache plugin: A syntax error has been fixed. Thanks to @octo. cURL-JSON plugin: A segmentation fault that occurred when handling JSON with unexpected structure has been fixed. Thanks to @octo. #1896 PostgreSQL plugin: Handling of NULL values in the query_plans and query_plans_by_table queries has been fixed. Thanks to Bernd Zeimetz. #1905 RRDCacheD plugin: Reconnection behavior has been added. Thanks to @tokkee. Debian#657877 VServer plugin: Use of a deprecated API (readdir_r()) has been fixed. Thanks to @tokkee. [Write Graphite plugin](https://collectd.org/wiki/index.php/Plugin:Write Graphite): Make default values configurable at compile time again. Thanks to @octo. #1953 [Write HTTP plugin](https://collectd.org/wiki/index.php/Plugin:Write HTTP): A bug has been fixed that lead to flush callbacks being registered twice. Thanks to @octo. #1955

Build system: An option to to avoid building the DF plugin against XFS has been added. Thanks to @rubenk. #1878 Build system: Autoconf ≥ 2.60, a C99-capable compiler and pkg-config are now required. Thanks to @rubenk. Build system: Building with -Werror is now optional. Thanks to @rubenk. #1222 Build system: Many compilation issues on non-Linux platforms have been fixed, leading to wider plugin support. Thanks to @rubenk, Dagobert Michelsen, Havard Eidnes and Robert Viduya. Build system: The configuration summary now also ends up in config.log. Thanks to @tokkee. collectd: All command-line options now override global options from the config file. Thanks to @tokkee. #366 collectd: A number of unit tests for commonly used functions have been added. Thanks to @octo. collectd: Plugins start up and read timeouts are now logged. Thanks to @mfournier. #1293, #1254 collectd: Support for a timeout has been added to FLUSH callbacks. Thanks to Manuel Luis Sanmartín Rozada. collectd: The -T command line switch now reports more errors. Thanks to Corey Kosak. #1642 collectd: The max size of value list elements (DATA_MAX_NAME_LEN) has been doubled and is now configurable at build time. Thanks to Amy Lin, @octo and Radu Brumariu. #1120 Set target: The MetaData option has been added. Thanks to Yves Mettier and Kevin Bowling. #1106, #1656, #1913 AMQP plugin, Write_HTTP plugin, Write_Kafka plugin: Support for libyajl < 2 has been added. Thanks to @octo. [APC UPS plugin](https://collectd.org/wiki/index.php/Plugin:APC UPS): Parsing of end markers has been fixed. Thanks to @octo #617 [APC UPS plugin](https://collectd.org/wiki/index.php/Plugin:APC UPS): The PersistentConnection option has been added. Thanks to @octo #617 ceph plugin, DNS plugin, Exec plugin, IPTables plugin, Ping plugin, turbostat plugin: When running unprivileged, these plugins will now warn about insuffiscient permissions or capabilities(7). Thanks to @mfournier. #1530 Chrony plugin: This new plugin collects NTP data from the chrony NTP server. Thanks to Claudius Zingerli. #1548 cpusleep plugin: This new plugin measures time spent by CPU in deep sleep mode. Thanks to Rinigus. #1826 CPU plugin: The ReportNumCpu option has been added. Thanks to Fabien Wernli. cURL plugin, cURL-JSON plugin, cURL-XML plugin: The new Statistics reports various per-HTTP connection timers. Thanks to @tokkee. #1004 DBI plugin: The Interval option has been added to Database blocks. Thanks to Michal Bebjak. Disk plugin: Support for FreeBSD has been added. Thanks to Xin Li, Brad Davis, Ruben Kerfhof and Kevin Bowling. [Empty Counter match](https://collectd.org/wiki/index.php/Match:Empty Counter): Support for derives has been implemented. Thanks to @octo. #1813 GenericJMX plugin: Support for TabularData and the PluginName option have been added. Thanks to David Crane. #1290, #1291 GPS plugin: This new plugin reports the number of sattelites seen by and precision of a GPS receiver. Thanks to Nicolas Jourden. #1346 gRPC plugin: This new client and server plugin allows sending and receiving metrics using the gRPC protocol. Comparable to the UnixSock plugin, but using TCP and TLS. Thanks to @tokkee and @octo. Interface plugin: Reporting dropped packets has been added. Thanks to Marc Falzon. #1555 Interface plugin: The ReportInactive has been added, letting users skip inactive network interfaces. Thanks to Rinigus. #1791 Interface plugin: The new, Solaris-only UniqueName option has been added. Thanks to Yoga Ramalingam. #1416 Lua plugin: This new language binding allows writing plugins using the Lua programming language. Thanks to Julien Ammous, @octo and @rubenk. Memory plugin: Reporting of ARC memory on Solaris has been added. Thanks to Brian ONeill. MQTT plugin: This new plugin sends metrics to and/or receives metrics from an MQTT broker. Thanks to Marc Falzon, Jan-Piet Mens, Nicholas Humfrey and @octo. #805, #1124 MySQL plugin: Connection to the database server can now be done over SSL. Thanks to Brian Lalor. #1256 MySQL plugin: Monitoring slow queries has been added. Thanks to skob. #1773 MySQL plugin: mysql_bpool_pages-flushed has been renamed to mysql_bpool_counters-pages_flushed because the value is cumulative. Thanks to Marek Becka. MySQL plugin: Support for Galera statistics has been added. Thanks to Rachid Zarouali. #1849 MySQL plugin: Support for InnoDB metrics was improved. Thanks to Aman Gupta. #1111 MySQL plugin: The mysql_sort type has been split into 3 different types. Thanks to Pavel Rochnyack. #1592 Network plugin: Decryption error logging has been improved. Thanks to Pavel Rochnyack. #1735 [Notify Nagios plugin](https://collectd.org/wiki/index.php/Plugin:Notify Nagios): This new plugin sends notifications to Nagios as a passive check result. Thanks to @octo. NTPd plugin: The plugin now detects if the ntp daemon reports nanoseconds instead of microseconds. Thanks to Matwey V. Kornilov. #1783 OpenLDAP plugin: Several connection-related improvements have been made. Thanks to @mfournier. #1308 OpenLDAP plugin: Support for "simple authentication" has been added. Thanks to Marek Becka. #1087 Ping plugin: The Size option has been added, allowing the ICMP data payload size to be configured. Thanks to Witold Baryluk. #1395 PostgreSQL plugin, DBI plugin, Oracle plugin: The new PluginInstanceFrom option has been added. Thanks to Pavel Rochnyack. #1707 PowerDNS plugin: The recursor metrics have been updated to 3.7.3 and missing rr types have been added. Thanks to @rubenk. Processes plugin: Counting of context switches was added for Linux. Thanks to Manuel Luis Sanmartín Rozada. #1036 Processes plugin: Improve reliability of thread counts on Linux. Thanks to Manuel Luis Sanmartín Rozada. Python plugin: Minimal Python version requirement has been bumped to 2.6. ''Thanks to @rubenk. #1864 Redis plugin: Several additional metrics are now collected. Thanks to Marc Falzon and Matteo Contrini. #1807, #1483 Sensors plugin: The UseLabels option has been added. Thanks to Christian Fetzer. SMART plugin: The new IgnoreSleepMode option has been added. Thanks to Scott Talbert. #1770 SMART plugin: The new UseSerial option allows identifying devices in a stable way. Thanks to Scott Talbert. #1794 SNMP plugin: The IpAddress can now be used for instances. Thanks to Vincent Bernat. #1397 StatsD plugin: Latency calculation histogram is now able to shrink automatically to optimal size. Thanks to Pavel Rochnyack. #1622 StatsD plugin: The CounterSum option has been added. Thanks to @octo. #929, #1282, #1311 UUID plugin: The plugin now also looks in in smbios system table and /sys/class/dmi. Thanks to @rubenk. #1490 virt plugin: The PluginInstanceFormat option has been added. Thanks to @rubenk. #1100 [Write Graphite plugin](https://collectd.org/wiki/index.php/Plugin:Write Graphite): The ReconnectInterval option has been added. Thanks to Toni Moreno and @octo. [Write HTTP plugin](https://collectd.org/wiki/index.php/Plugin:Write HTTP): A KairosDB formatter has been added. Thanks to Aurélien Rougemont. #1809 [Write HTTP plugin](https://collectd.org/wiki/index.php/Plugin:Write HTTP): Notifications are now handled by this plugin. Thanks to @octo. [Write HTTP plugin](https://collectd.org/wiki/index.php/Plugin:Write HTTP): The LogHttpError option has been added. Thanks to vzubko. [Write HTTP plugin](https://collectd.org/wiki/index.php/Plugin:Write HTTP): The new Headers option allows setting custom HTTP headers in outgoing requests. Thanks to Brandon Arp. #1634 [Write Kafka plugin](https://collectd.org/wiki/index.php/Plugin:Write Kafka): Key handling has been made more comprehensive and reliable. Thanks to @octo, Pierre-Yves Ritschard and Vincent Bernat. #1765, #1695, #1393 [Write Redis plugin](https://collectd.org/wiki/index.php/Plugin:Write Redis): The Database, MaxSetSize, Prefix and StoreRates options have been added. Thanks to Brian Kelly and Sebastian Pfahl. [Write Riemann plugin](https://collectd.org/wiki/index.php/Plugin:Write Riemann): The new BatchFlushTimeout and Timeout option have been added. Thanks to Pierre-Yves Ritschard and Gergely Nagy. [Write Riemann plugin](https://collectd.org/wiki/index.php/Plugin:Write Riemann): This plugin now requires the riemann-c-client library, version 1.6.0+. This adds support for submitting values to Riemann over TLS. Thanks to Gergely Nagy. #986 [Write TSDB plugin](https://collectd.org/wiki/index.php/Plugin:Write TSDB), [Write Sensu plugin](https://collectd.org/wiki/index.php/Plugin:Write Sensu), [Write Riemann plugin](https://collectd.org/wiki/index.php/Plugin:Write Riemann), [Write Graphite plugin](https://collectd.org/wiki/index.php/Plugin:Write Graphite), [Write TSDB plugin](https://collectd.org/wiki/index.php/Plugin:Write TSDB): TCP keepalive is now enabled, helping graceful recovery from unclean network disconnections. Thanks to @mfournier. #1549 XenCPU plugin: This new plugin collects XEN Hypervisor CPU stats. Thanks to Pavel Rochnyack. #1608 [ZFS ARC plugin](https://collectd.org/wiki/index.php/Plugin:ZFS ARC): Several new statistics have been added and a couple of obsolete ones removed. Thanks to Brad Davis, Brian ONeill and @rubenk. Zone plugin: This new plugin reads per-zone CPU usage on Solaris. Thanks to Mathijs Mohlmann and Dagobert Michelsen.