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2023-07-26Refactor RRD code. (#15423)vkalintiris
* Storage engine. * Host indexes to rrdb * Move globals to rrdb * Move storage_tiers_backfill to rrdb * default_rrd_update_every to rrdb * default_rrd_history_entries to rrdb * gap_when_lost_iterations_above to rrdb * rrdset_free_obsolete_time_s to rrdb * libuv_worker_threads to rrdb * ieee754_doubles to rrdb * rrdhost_free_orphan_time_s to rrdb * rrd_rwlock to rrdb * localhost to rrdb * rm extern from func decls * mv rrd macro under rrd.h * default_rrdeng_page_cache_mb to rrdb * default_rrdeng_extent_cache_mb to rrdb * db_engine_journal_check to rrdb * default_rrdeng_disk_quota_mb to rrdb * default_multidb_disk_quota_mb to rrdb * multidb_ctx to rrdb * page_type_size to rrdb * tier_page_size to rrdb * No storage_engine_id in rrdim functions * storage_engine_id is provided by st * Update to fix merge conflict. * Update field name * Remove unnecessary macros from rrd.h * Rm unused type decls * Rm duplicate func decls * make internal function static * Make the rest of public dbengine funcs accept a storage_instance. * No more rrdengine_instance :) * rm rrdset_debug from rrd.h * Use rrdb to access globals in ML and ACLK Missed due to not having the submodules in the worktree. * rm total_number * rm RRDVAR_TYPE_TOTAL * rm unused inline * Rm names from typedef'd enums * rm unused header include * Move include * Rm unused header include * s/rrdhost_find_or_create/rrdhost_get_or_create/g * s/find_host_by_node_id/rrdhost_find_by_node_id/ Also, remove duplicate definition in rrdcontext.c * rm macro used only once * rm macro used only once * Reduce rrd.h api by moving funcs into a collector specific utils header * Remove unused func * Move parser specific function out of rrd.h * return storage_number instead of void pointer * move code related to rrd initialization out of rrdhost.c * Remove tier_grouping from rrdim_tier Saves 8 * storage_tiers bytes per dimension. * Fix rebase * s/rrd_update_every/update_every/ * Mark functions as static and constify args * Add license notes and file to build systems. * Remove remaining non-log/config mentions of memory mode * Move rrdlabels api to separate file. Also, move localhost functions that loads labels outside of database/ and into daemon/ * Remove function decl in rrd.h * merge rrdhost_cache_dir_for_rrdset_alloc into rrdset_cache_dir * Do not expose internal function from rrd.h * Rm NETDATA_RRD_INTERNALS Only one function decl is covered. We have more database internal functions that we currently expose for no good reason. These will be placed in a separate internal header in follow up PRs. * Add license note * Include libnetdata.h instead of aral.h * Use rrdb to access localhost * Fix builds without dbengine * Add header to build system files * Add rrdlabels.h to build systems * Move func def from rrd.h to rrdhost.c * Fix macos build * Rm non-existing function * Rebase master * Define buffer length macro in ad_charts. * Fix FreeBSD builds. * Mark functions static * Rm func decls without definitions * Rebase master * Rebase master * Properly initialize value of storage tiers. * Fix build after rebase.
2023-07-13Rename log_access and log_health (#15368)Emmanuel Vasilakis
2023-07-12Fix coverity issues (#15375)Stelios Fragkakis
* parser cannot be null -- CID 394449 Dereference before null check (REVERSE_INULL) * Fix warning - ignoring return value of ‘write’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
2023-07-12Keep health log history in seconds (#15314)Emmanuel Vasilakis
* rebase * changes queries to delete based on when * readme changes * no need to do migration * wip, protect un-updated events from cleanup * remove index on when_key * fix query for claimed cleanup * if set less than minimum, set minimum * fix query * correct config assign
2023-07-11Rename log Macros (debug) (#15322)thiagoftsm
2023-07-06Rename generic `error` function (#15296)thiagoftsm
2023-07-06Code reorg and cleanup - enrichment of /api/v2 (#15294)Costa Tsaousis
* claim script now accepts the same params as the kickstart * rewrote buildinfo to unify all methods * added cloud unavailable in cloud status * added all exporters * renamed httpd to h2o * rename ENABLE_COMPRESSION to ENABLE_LZ4 * rename global variable * rename ENABLE_HTTPS to ENABLE_OPENSSL * fix coverity-scan for openssl * add lz4 to coverity-scan * added all plugins and most of the features * added all plugins and most of the features * generalize bitmap code so that we can have any size of bitmaps * cleanup * fix compilation without protobuf * fix compilation with others allocators * fix bitmap * comprehensive bitmaps unit test * bitmap as macros * added developer mode * added system info to build info * cloud available/unavailable * added /api/v2/info * added units and ni to transitions * when showing instances and transitions, show only the instances that have transitions * cleanup * add missing quotes * add anchor to transitions * added more to build info * calculate retention per tier and expose it to /api/v2/info * added currently collected metrics * do not show space and retention when no numbers are available * fix impossible overflow * Add function for transitions and execute callback * In case of error, reset and try next dictionary entry * Fix error message * simpler logic to maintain retention per tier * /api/v2/alert_transitions * Handle case of recipient null Convert after and before to usec * Add classification, type and component * working /api/v2/alert_transitions * Fix query to properly handle context and alert name * cleanup * Add search with transition * accept transition in /api/v2/alert_transitions * totaly dynamic facets * fixed debug info * restructured facets * cleanup; removal of options=transitions * updated alert entries flags * method to exec * Return also exec run timestamp Temp table cleanup only when we don't execute with a transition * cleanup obsolete anchor parameter * Add sql_get_alert_configuration function * added options=config to alert_transitions * added /api/v2/alert_config * preliminary work for /api/v2/claim * initialize variables; do not expose expected retention if no disk space info is available; do not report aclk as initializing when not claimed * fix claim session key filename * put a newline into the session key file * more progress on claiming * final /api/v2/claim endpoint * after claiming, refresh our state at the output * Fix query to fetch config * Remove debug log * add configuration objects * add configuration objects - fixed * respect the NETDATA_DISABLE_CLOUD env variable * NETDATA_DISABLE_CLOUD env variable sets the default, but the config sets the final value * use a new claimed_id on every claiming * regenerate random key on claiming and wait for online status * ignore write() return value when writing a newline * dont show cloud status disabled when claimed_id is missing * added ctx to alert instances * cleanup config and transitions from /api/v2/alerts * fix unused variable * in /api/v2/alert_config show 1 config without an array * show alert values conditionally, by appending options=values * When storing host info if the key value is empty, store unknown * added options=summary to control when the alerts summary is shown * increased http_api_v2 to version 5 * claming random key file is now not world readable * added local-listeners binary that detects all the listening ports, their IPs and their command lines --------- Co-authored-by: Stelios Fragkakis <52996999+stelfrag@users.noreply.github.com>
2023-07-01Optimizations part 3 (#15293)Costa Tsaousis
* use madvise to speed up indexing * collect all rrddim members into a collector structure * use tier 0 virtual point for storing last stored value * reorganize key fields in rrddim * remove fgets from pluginsd and replace it with read() * properly uncork the web server sockets * Revert "reorganize key fields in rrddim" This reverts commit 2d45fa3959087e05462d387ff115a260f3a04b60. * Revert "use tier 0 virtual point for storing last stored value" This reverts commit a576cdd377ad4778a3b8608cabbb7ea7bb19a3a8. * fix cork names * fix compilation warnings
2023-06-30Replace `info` macro with a less generic name (#15266)Carlo Cabrera
2023-06-30docs: update stream.conf "health enabled by default" description (#15291)Ilya Mashchenko
2023-06-29Optimizations part 2 (#15280)Costa Tsaousis
* make all pluginsd functions inline, instead of function pointers * dynamic MRG partitions based on the number of CPUs * report the right size of the MRG * prevent invalid read on pluginsd exit * faster service_running() check; fix compiler warnings; shutdown replication after streaming to prevent crash on shutdown * sender is now using a spinlock * rrdcontext uses spinlock * replace select() with poll() * signed calculation of threads * disable read-ahead on jnfv2 files during scan
2023-06-26use gperf for the pluginsd/streaming parser hashtable (#15251)Costa Tsaousis
* use gperf for the pluginsd parser * simplify pluginsd_parser by removing void pointers to user * pluginsd_split_words() with inlined pluginsd_space() * quoted_string_splitter() now uses a map instead of a function for determining spaces * add stress test for pluginsd parser * optimized BITMAP256 * optimized rrdpush receiver reception * optimized rrdpush sender compression * renames and cleanup * remove wrong negation * unify handshake and disconnection reasons * use parser_find_keyword * register job names only for the current repertoire
2023-06-20Fix SSL non-blocking retry handling in the web server (#15222)Costa Tsaousis
* readers should be able to recursively acquire the lock, even when there is a writer waiting * log failure to establish connection * debug log on streaming sender * log the length of the message * log recv_timeout() * debug * debug * debug ssl read * log SSL_get_error() responses * handle EWOULDBLOCK in web_client_receive() * make the web server handle EWOULDBLOCK case for SSL * remove debug statements * handle more errno values
2023-06-19Obvious memory reductions (#15204)Costa Tsaousis
* remove rd->update_every * reduce amount of memory for RRDDIM * reorgnize rrddim->db entries * optimize rrdset and statsd * optimize dictionaries * RW_SPINLOCK for dictionaries * fix codeql warning * rw_spinlock improvements * remove obsolete assertion * fix crash on health_alarm_log_process() * use RW_SPINLOCK for AVL trees * add RW_SPINLOCK read/write trylock * pgc and mrg now use rw_spinlocks; cache line optimizations for mrg * thread tag of dbegnine init * append created datafile, lockless * make DOUBLE_LINKED_LIST_APPEND_ITEM_UNSAFE friendly for lockless use * thread cancelability in spinlocks; optimize thread cancelability management * introduce a JudyL to index datafiles and use it during queries to quickly find the relevant files * use the last timestamp of each journal file for indexing * when the previous cannot be found, start from the beginning * add more stats to PDC to trace routing easier * rename spinlock functions * fix for spinlock renames * revert statsd socket statistics to size_t * turn fatal into internal_fatal() * show candidates always * show connected status and connection attempts
2023-06-19/api/v2/nodes and streaming function (#15168)Costa Tsaousis
* dummy streaming function * expose global functions upstream * separate function for pushing global functions * add missing conditions * allow streaming function to run async * started internal API for functions * cache host retention and expose it to /api/v2/nodes * internal API for function table fields; more progress on streaming status * abstracted and unified rrdhost status * port old coverity warning fix - although it is not needed * add ML information to rrdhost status * add ML capability to streaming to signal the transmission of ML information; added ML information to host status * protect host->receiver * count metrics and instances per host * exposed all inbound and outbound streaming * fix for ML status and dependency of DATA_WITH_ML to INTERPOLATED, not IEEE754 * update ML dummy * added all fields * added streaming group by and cleaned up accepted values by cloud * removed type * Revert "removed type" This reverts commit faae4177e603d4f85b7433f33f92ef3ccd23976e. * added context to db summary * new /api/v2/nodes schema * added ML type * change default function charts * log to trace new capa * add more debug * removed debugging code * retry on receive interrupted read; respect sender reconnect delay in all cases * set disconnected host flag and manipulate localhost child count atomically, inside set/clear receiver * fix infinite loop * send_to_plugin() now has a spinlock to ensure that only 1 thread is writing to the plugin/child at the same time * global cloud_status() call * cloud should be a section, since it will contain error information * put cloud capabilities into cloud * aclk status in /api/v2 agents sections * keep aclk_connection_counter * updates on /api/v2/nodes * final /api/v2/nodes and addition of /api/v2/nodes_instances * parametrize all /api/v2/xxx output to control which info is outputed per endpoint * always accept nodes selector * st needs to be per instance, not per node * fix merging of contexts; fix cups plugin priorities * add after and before parameters to /api/v2/contexts/nodes/nodes_instances/q * give each libuv worker a unique id * aclk http_api_v2 version 4
2023-06-13Do strdupz on empty string (#15183)Emmanuel Vasilakis
2023-06-09Fix coverity issues (#15169)Stelios Fragkakis
* online is true at this point * ignore return value * Check sender existence
2023-06-08api v2 nodes for streaming statuses (#15162)Costa Tsaousis
* api v2 nodes for streaming statuses * remove test * move parts of the output * in api/v2/data return 5 values per point when aggregation=percentage and raw option is given; return final values when aggregation=percentage is not the final grouping
2023-06-07Re-write of SSL support in Netdata; restoration of SIGCHLD; detection of ↵Costa Tsaousis
stale plugins; streaming improvements (#15113) * add information about streaming connections to /api/v2/nodes; reset defer time when sender or receivers connect or disconnect * make each streaming destination respect its SSL settings * to not send SSL traffic over non-SSL connection * keep track of outgoing streaming connection attempts * retry SSL reads when SSL_read() returns SSL_ERROR_WANT_READ * Revert "retry SSL reads when SSL_read() returns SSL_ERROR_WANT_READ" This reverts commit 14c858677c6f2d3b08c94f298e2f45ecdb74c801. * cleanup SSL connections properly * initialize SSL in rpt before takeover * sender should free SSL when talking to a non-SSL destination * do not shutdown SSL when receiver exits * restore operation of SIGCHLD when the reaper is not enabled * create an fgets function that checks for data and times out * work on error handling of plugins exiting * remove newlines from logs * global call to waitid(), caching the result for netdata_pclose() to process * receiver tid * parser timeouts in 2 minutes instead of 10 * fix crash when UUID is NULL in SQLite * abstract sqlite3 parsing for uuid and text * write proper ssl errors on read and write * fix for SSL_ERROR_WANT_RETRY_VERIFY * SSL WANT per function * unified SSL error logging * fix compilation warning * additional logging about parser cleanup * streaming parser should call the pluginsd parser cleanup * SSL error handling work * SSL initialization unification * check for pending data when receiving SSL response with timeout * macro to check if an SSL connection has been established * remove SSL_pending() * check for SSL macros * use SSL_peek() to find if there is a response * SSL renames * more SSL renames & cleanup * rrdpush ssl connection function * abstract all SSL functions into security.c * keep track of SSL connections and always attempt to use SSL read/write when on SSL connection * signal openssl to skip certificate validation when configured to do so * better SSL error handling and logging * SSL code cleanup * SSL retry on SSL_connect and SSL_accept * SSL provide default return value for old compilers * SSL read/write functions emulate system read/write functions * fix receive/send timeout and switch from SSL_peek() to SSL_pending() * remove SSL_pending() * removed sender auto-retry and debug info for initial recevier response * ssl skip certificate verification config for web server * ssl errors log ip and port of the peer * keep ssl with web_client for its whole lifetime * thread safe socket peers to text * use error_limit() for common ssl errors * cleanup * more cleanup * coverity fixes * ssl error logs include both local and remote ip/port info * remove obsolete code
2023-04-20WEBRTC for communication between agents and browsers (#14874)Costa Tsaousis
* initial webrtc setup * missing files * rewrite of webrtc integration * initialization and cleanup of webrtc connections * make it compile without libdatachannel * add missing webrtc_initialize() function when webrtc is not enabled * make c++17 optional * add build/m4/ax_compiler_vendor.m4 * add ax_cxx_compile_stdcxx.m4 * added new m4 files to makefile.am * id all webrtc connections * show warning when webrtc is disabled * fixed message * moved all webrtc error checking inside webrtc.cpp * working webrtc connection establishment and cleanup * remove obsolete code * rewrote webrtc code in C to remove dependency for c++17 * fixed left-over reference * detect binary and text messages * minor fix * naming of webrtc threads * added webrtc configuration * fix for thread_get_name_np() * smaller web_client memory footprint * universal web clients cache * free web clients every 100 uses * webrtc is now enabled by default only when compiled with internal checks * webrtc responses to /api/ requests, including LZ4 compression * fix for binary and text messages * web_client_cache is now global * unification of the internal web server API, for web requests, aclk request, webrtc requests * more cleanup and unification of web client timings * fixed compiler warnings * update sent and received bytes * eliminated of almost all big buffers in web client * registry now uses the new json generation * cookies are now an array; fixed redirects * fix redirects, again * write cookies directly to the header buffer, eliminating the need for cookie structures in web client * reset the has_cookies flag * gathered all web client cleanup to one function * fixes redirects * added summary.globals in /api/v2/data response * ars to arc in /api/v2/data * properly handle host impersonation * set the context of mem.numa_nodes
2023-04-18Fix warnings and error when compiling with --disable-dbengine (#14919)Stelios Fragkakis
2023-04-07Boost dbengine (#14832)Costa Tsaousis
* configure extent cache size * workers can now execute up to 10 jobs in a run, boosting query prep and extent reads * fix dispatched and executing counters * boost to the max * increase libuv worker threads * query prep always get more prio than extent reads; stop processing in batch when dbengine is queue is critical * fix accounting of query prep * inlining of time-grouping functions, to speed up queries with billions of points * make switching based on a local const variable * print one pending contexts loading message per iteration * inlined store engine query API * inlined storage engine data collection api * inlined all storage engine query ops * eliminate and inline data collection ops * simplified query group-by * more error handling * optimized partial trimming of group-by queries * preparative work to support multiple passes of group-by * more preparative work to support multiple passes of group-by (accepts multiple group-by params) * unified query timings * unified query timings - weights endpoint * query target is no longer a static thread variable - there is a list of cached query targets, each of which of freed every 1000 queries * fix query memory accounting * added summary.dimension[].pri and sorted summary.dimensions based on priority and then name * limit max ACLK WEB response size to 30MB * the response type should be text/plain * more preparative work for multiple group-by passes * create functions for generating group by keys, ids and names * multiple group-by passes are now supported * parse group-by options array also with an index * implemented percentage-of-instance group by function * family is now merged in multi-node contexts * prevent uninitialized use
2023-03-23Schedule node info to the cloud after child connection (#14790)Stelios Fragkakis
* Schedule node info to the cloud after child connection * Remove debug code * Schedule localhost node info within 5 seconds of startup. If no children are detected Or a child connects (switch to immediate localhost node info update)
2023-03-21/api/v2/X part 5 (#14718)Costa Tsaousis
* query timestamps are now pre-determined and alignment on timestamps is guarranteed * turn internal_fatal() to internal_error() to investigate the issue * handle query when no data exist in the db * check for non NULL dict when running dictionary garbage collect * support API v2 requests via ACLK * add nodes detailed information to /api/v2/nodes * fixed keys and added dummy nodes for completeness * added nodes_hard_hash, alerts_hard_hash, alerts_soft_hash; started building a nodes status object to reflect the current status of a node * make sure replication does not double count charts that are already being replicated * expose min and max in sts structures * added view_minimum_value and view_maximum_value; percentage calculation is now an additional pass on the data, removed from formatters; absolute value calculation is now done at the query level, removed from formatters * respect trimming in percentage calculation; updated swagger * api/v2/weights preparative work to support multi-node queries - still single node though * multi-node /api/v2/weights endpoint, supporting all the filtering parameters of /api/v2/data * when passing the raw option, the query exposes the hidden dimensions * fix compilation issues on older systems * the query engine now calculates per dimension min, max, sum, count, anomaly count * use the macro to calculate storage point anomaly rate * weights endpoint exposing version hashes * weights method=value shows min, max, average, sum, count, anomaly count, anomaly rate * query: expose RESET flag; do not add the same point multiple times to the aggregated point * weights: more compact output * weights requests can be interrupted * all /api/v2 requests can be interrupted and timeout * allow relative timestamps in weights * fix macos compilation warnings * Revert "fix macos compilation warnings" This reverts commit 8a1d24e41e9b58de566ac59f0c4b1c465bcc0592. * /api/v2/data group-by now works on dimension names, not ids * /api/v2/weights does not query metrics without retention and new output format * /api/v2/weights value and anomaly queries do context queries when contexts are filtered; query timeout is now always in ms
2023-03-16Use one thread for ACLK synchonization (#14281)Stelios Fragkakis
* Remove aclk sync threads * Disable functions if compiled with --disable-cloud * Allocate and reuse buffer when scanning hosts Tune transactions when writing metadata Error checking when executing db_execute (it is already within a loop with retries) * Schedule host context load in parallel Child connection will be delayed if context load is not complete Event loop cleanup * Delay retention check if context is not loaded Remove context load check from regular metadata host scan * Improve checks to check finished threads * Cleanup warnings when compiling with --disable-cloud * Clean chart labels that were created before our current maximum retention * Fix sql statement * Remove structures members that of no use Remove buffer allocations when not needed * Fix compilation error * Don't check for service running when not from a worker * Code cleanup if agent is compiled with --disable-cloud Setup ACLK tables in the database if needed Submit node status update messages to the cloud * Fix compilation warning when --disable-cloud is specified * Address codacy issues * Remove empty file -- has already been moved under contexts * Use enum instead of numbers * Use UUID_STR_LEN * Add newline at the end of file * Release node_id to prevent memory leak under certain cases * Add queries in defines * Ignore rc from transaction start -- if there is an active transaction, we will use it (same with commit) should further improve in a future PR * Remove commented out code * If host is null (it should not be) do not allocate config (coverity reports Resource leak) * Do garbage collection when contexts is initialized * Handle the case when config is not yet available for a host
2023-03-02/api/v2/contexts (#14592)Costa Tsaousis
* preparation for /api/v2/contexts * working /api/v2/contexts * add anomaly rate information in all statistics; when sum-count is requested, return sums and counts instead of averages * minor fix * query targegt now accurately counts hosts, contexts, instances, dimensions, metrics * cleanup /api/v2/contexts * full text search with /api/v2/contexts * simple patterns now support the option to search ignoring case * full text search API with /api/v2/q * simple pattern execution optimization * do not show q when not given * full text search accounting * separated /api/v2/nodes from /api/v2/contexts * fix ssv queries for group_by * count query instances queried and failed per context and host * split rrdcontext.c to multiple files * add query totals * fix anomaly rate calculation; provide "ni" for indexing hosts * do not generate zero valued members * faster calculation of anomaly rate; by just summing integers for each db points and doing math once for every generated point * fix typo when printing dimensions totals * added option minify to remove spaces and newlines fron JSON output * send instance ids and names when they differ * do not add in query target dimensions, instances, contexts and hosts for which there is no retention in the current timeframe * fix for the previous + renames and code cleanup * when a dimension is filtered, include in the response all the other dimensions that are selectable * do not add nodes that do not have retention in the current window * move selection of dimensions to query_dimension_add(), instead of query_metric_add() * increase the pre-processing capacity of queries * generate instance fqdn ids and names only when they are needed * provide detailed statistics about tiers retention, queries, points, update_every * late allocation of query dimensions * cleanup * more cleanup * support for annotations per displayed point, RESET and PARTIAL * new type annotations * if a chart is not linked to contexts and it is collected, link it when it is collected * make ML run reentrant * make ML rrdr query synchronous * optimize replication memory allocation of replication_sort_entry * change units to percentage, when requesting a coefficinet of variation, or a percentage query * initialize replication before starting main threads * properly decrement no room requests counter * propagate the non-zero flag to group-by * the same by avoiding the extra loop * respect non-zero in all dimension arrays * remove dictionary garbage collection from dictionary_entries() and dictionary_version() * be more verbose when jv2 indexing is postponed * prevent infinite loop * use hidden dimensions even when dimensions pattern is unset * traverse hosts using dictionaries * fix dictionary unittests
2023-02-27Reorg learn 0227 (#14621)Chris Akritidis
* reorg batch 1 * remove duplicate cloud custom dashboard and agent dashboard * Simplify the root web/README * Merge streaming references * Make enable streaming the overall intro and the README the reference * Remove reference-streaming document * Update overview pages
2023-02-26Reorg learn 0226 (#14610)Chris Akritidis
* Reorg getting started * Streaming * Remove blanks * Fix up to cloud alerts
2023-02-22/api/v2/data - multi-host/context/instance/dimension/label queries (#14564)Costa Tsaousis
* fundamentals for having /api/v2/ working * use an atomic to prevent writing to internal pipe too much * first attempt of multi-node, multi-context, multi-chart, multi-dimension queries * v2 jsonwrap * first attempt for group by * cleaned up RRDR and fixed group by * improvements to /api/v2/api * query instance may be realloced, so pointers to it get invalid; solved memory leaks * count of quried metrics in summary information * provide detailed information about selected, excluded, queried and failed metrics for each entity * select instances by fqdn too * add timing information to json output * link charts to rrdcontexts, if a query comes in and it is found unlinked * calculate min, max, sum, average, volume, count per metric * api v2 parameters naming * renders alerts and units * render machine_guid and node_id in all sections it is relevant * unified keys * group by now takes into account units and when there are multiple units involved, it creates a dimension per unit * request and detailed are hidden behind an option * summary includes only a flattened list of alerts * alert counts per host and instance * count of grouped metrics per dimension * added contexts to summary * added chart title * added dimension priorities and chart type * support for multiple group by at the same time * minor fixes * labels are now a tree * keys uniformity * filtering by alerts, both having a specific alert and having a specific alert in a specific status * added scope of hosts and contexts * count of instances on contexts and hosts * make the api return valid responses even when the response contains no data * calculate average and contribution % for every item in the summary * fix compilation warnings * fix compilation warnings - again
2023-02-20Remove References category from learn (#14571)Chris Akritidis
2023-02-15JSON internal API, IEEE754 base64/hex streaming, weights endpoint ↵Costa Tsaousis
optimization (#14493) * first work on standardizing json formatting * renamed old grouping to time_grouping and added group_by * add dummy functions to enable compilation * buffer json api work * jsonwrap opening with buffer_json_X() functions * cleanup * storage for quotes * optimize buffer printing for both numbers and strings * removed ; from define * contexts json generation using the new json functions * fix buffer overflow at unit test * weights endpoint using new json api * fixes to weights endpoint * check buffer overflow on all buffer functions * do synchronous queries for weights * buffer_flush() now resets json state too * content type typedef * print double values that are above the max 64-bit value * str2ndd() can now parse values above UINT64_MAX * faster number parsing by avoiding double calculations as much as possible * faster number parsing * faster hex parsing * accurate printing and parsing of double values, even for very large numbers that cannot fit in 64bit integers * full printing and parsing without using library functions - and related unit tests * added IEEE754 streaming capability to enable streaming of double values in hex * streaming and replication to transfer all values in hex * use our own str2ndd for set2 * remove subnormal check from ieee * base64 encoding for numbers, instead of hex * when increasing double precision, also make sure the fractional number printed is aligned to the wanted precision * str2ndd_encoded() parses all encoding formats, including integers * prevent uninitialized use * /api/v1/info using the new json API * Fix error when compiling with --disable-ml * Remove redundant 'buffer_unittest' declaration * Fix formatting * Fix formatting * Fix formatting * fix buffer unit test * apps.plugin using the new JSON API * make sure the metrics registry does not accept negative timestamps * do not allow pages with negative timestamps to be loaded from db files; do not accept pages with negative timestamps in the cache * Fix more formatting --------- Co-authored-by: Stelios Fragkakis <52996999+stelfrag@users.noreply.github.com>
2023-02-14replicating gaps (#14506)Costa Tsaousis
* instead of sending RBEGIN/REND without points, jump to the end of the gap on every replication step * Remove check for memory mode NONE so that replication when INTERPOLATE is negotiated will work * Remove unused label --------- Co-authored-by: Stelios Fragkakis <52996999+stelfrag@users.noreply.github.com>
2023-02-09Virtual hosts for data collection (#14464)Costa Tsaousis
* support multiple hosts at pluginsd structures * cleanup obsolete code * use a lookup hashtable to quickly find the keyword to execute, without traversing the whole linked list of keywords * more cleanup * move new hash function to inlined.h * minimize comparisons, eliminate a pre-parsing of the first keyword for each line * cleanup parser from old code * move parser into libnetdata * unique entries in parser keywords hashtable * move all hashing functions to inlined.h, name their sources, simple_hash() now defaults to FNV1a, it was FNV1 * small_hash() for parser * plugins.d now can switch hosts, and also create/update them * update hash function and hashtable size * updated message * unittest all hashing functions * reset the chart when setting a new host * remove host tags * enable archived hosts when a collector pushes host info * do not need localhost to swtich to localhost * disable ARAL and OWA with -DFSANITIZE_ADDRESS=1
2023-02-08Add markdown files in Learn (#14466)Fotis Voutsas
* add metadata for learn * first batch of adding metadata to md files * second batch of adding metadata to md files * third batch of adding metadata to md files * test one sidebar_label * add missing sidebar_labels * add missing sidebar_labels to files left behind * test, ansible doc is stubborn * fix * fix * fix * don't use questionmarks in the sidebar label * don't use exclamation marks and symbols in the sidebar label * fix style guide * fixes * fixes
2023-02-07Streaming interpolated values (#14431)Costa Tsaousis
* first commit - untested * fix wrong begin command * added set v2 too * debug to log stream buffer * debug to log stream buffer * faster streaming printing * mark charts and dimensions as collected * use stream points even if sender is not enabled * comment out stream debug log * parse null as nan * custom begin v2 * custom set v2; replication now copies the anomalous flag too * custom end v2 * enabled stream log test * renamed to BEGIN2, SET2, END2 * dont mix up replay and v2 members in user object * fix typo * cleanup * support to v2 to v1 proxying * mark updated dimensions as such * do not log unknown flags * comment out stream debug log * send also the chart id on BEGIN2, v2 to v2 * update the data collections counter * v2 values are transferred in hex * faster hex parsing * a little more generic hex and dec printing and parsing * fix hex parsing * minor optimization in dbengine api * turn debugging into info message * generalized the timings tracking, so that it can be used in more places * commented out debug info * renamed conflicting variable with macro * remove wrong edits * integrated ML and added cleanup in case parsing is interrupted * disable data collection locking during v2 * cleanup stale ML locks; send updated chart variables during v2; add info to find stale locks * inject an END2 between repeated BEGIN2 from rrdset_done() * test: remove lockless single-threaded logic from dictionary and aral and apply the right acquire/release memory order to reference counters * more fine grained dictionary atomics * remove unecessary return values * pointer validation under NETDATA_DICTIONARY_VALIDATE_POINTERS * Revert "pointer validation under NETDATA_DICTIONARY_VALIDATE_POINTERS" This reverts commit 846cdf2713e2a7ee2ff797f38db11714228800e9. * Revert "remove unecessary return values" This reverts commit 8c87d30f4d86f0f5d6b4562cf74fe7447138bbff. * Revert "more fine grained dictionary atomics" This reverts commit 984aec4234a340d197d45239ff9a10fd479fcf3c. * Revert "test: remove lockless single-threaded logic from dictionary and aral and apply the right acquire/release memory order to reference counters" This reverts commit c460b3d0ad497d2641bd0ea1d63cec7c052e74e4. * Apply again "pointer validation under NETDATA_DICTIONARY_VALIDATE_POINTERS" while keeping the improved atomic operations. This reverts commit f158d009 * fix last commit * fix last commit again * optimizations in dbengine * do not send anomaly bit on non-supporting agents (send it when the INTERPOLATED capability is available) * break long empty-points-loops in rrdset_done() * decide page alignment on new page allocation, not on every point collected * create max size pages but no smaller than 1/3 * Fix compilation when --disable-ml is specified * Return false * fixes for NETDATA_LOG_REPLICATION_REQUESTS * added compile option NETDATA_WITHOUT_WORKERS_LATENCY * put timings in BEGIN2, SET2, END2 * isolate begin2 ml * revert repositioning data collection lock * fixed multi-threading of statistics * do not lookup dimensions all the time if they come in the same order * update used on iteration, not on every points; also do better error handling --------- Co-authored-by: Stelios Fragkakis <52996999+stelfrag@users.noreply.github.com>
2023-02-06Minor fix, convert metadata of the learn to hidden sections (#14427)Tasos Katsoulas
minor fix, convert metadata of the learn to hidden sections Signed-off-by: Tasos Katsoulas <tasos@netdata.cloud>
2023-02-06replication to streaming transition when there are gaps (#14434)Costa Tsaousis
fix https://github.com/netdata/netdata/issues/14432
2023-02-02Covert our documentation links to GH absolute links (#14344)Tasos Katsoulas
Signed-off-by: Tasos Katsoulas <tasos@netdata.cloud>
2023-02-02DBENGINE v2 - improvements part 12 (#14379)Costa Tsaousis
* parallel initialization of tiers * do not spawn multiple dbengine event loops * user configurable dbengine parallel initialization * size netdata based on the real cpu cores available on the system netdata runs, not on the system monitored * user configurable system cpus * move cpuset parsing to os.c/.h * fix replication of misaligned chart dimensions * give a different path to each tier thread * statically allocate the path into the initialization structure * use aral for reusing dbengine pages * dictionaries uses ARAL for fixed sized values * fix compilation without internal checks * journal v2 index uses aral * test to see judy allocations * judy allocations using aral * Add config option to select if dbengine will use direct I/O (default is yes) * V1 journafiles will use uv_fs_read instead of mmap (respect the direct I/O setting) * Remove sqlite3IsMemdb as it is unused * Fix compilation error when --disable-dbengine is used * use aral for dbengine work_cmds * changed aral API to support new features * pgc and mrg aral overheads * rrdeng opcodes using aral * better structuring and naming * dbegnine query handles using aral * page descriptors using aral * remove obsolete linking * extent io descriptors using aral * aral keeps one last page alive * add missing return value * added judy aral overhead * pdc now uses aral * page_details now use aral * epdl and deol using aral - make sure ARALs are initialized before spawning the event loop * remove unused linking * pgc now uses one aral per partition * aral measure maximum allocation queue * aral to allocate pages in parallel * aral parallel pages allocation when needed * aral cleanup * track page allocation and page population separately --------- Co-authored-by: Stelios Fragkakis <52996999+stelfrag@users.noreply.github.com>
2023-01-30DBENGINE v2 - improvements part 11 (#14337)Costa Tsaousis
* acquiring / releasing interface for metrics * metrics registry statistics * cleanup metrics registry by deleting metrics when they dont have retention anymore; do not double copy the data of pages to be flushed * print the tier in retention summary * Open files with buffered instead of direct I/O (test) * added more metrics stats and fixed unittest * rename writer functions to avoid confusion with refcounting * do not release a metric that is not acquired * Revert to use direct I/O on write -- use direct I/O on read as well * keep track of ARAL overhead and add it to the memory chart * aral full check via api * Cleanup * give names to ARALs and PGCs * aral improvements * restore query expansion to the future * prefer higher resolution tier when switching plans * added extent read statistics * smoother joining of tiers at query engine * fine tune aral max allocation size * aral restructuring to hide its internals from the rest of netdata * aral restructuring; addtion of defrag option to aral to keep the linked list sorted - enabled by default to test it * fully async aral * some statistics and cleanup * fix infinite loop while calculating retention * aral docs and defragmenting disabled by default * fix bug and add optimization when defragmenter is not enabled * aral stress test * aral speed report and documentation * added internal checks that all pages are full * improve internal log about metrics deletion * metrics registry uses one aral per partition * metrics registry aral max size to 512 elements per page * remove data_structures/README.md dependency --------- Co-authored-by: Stelios Fragkakis <52996999+stelfrag@users.noreply.github.com>
2023-01-27DBENGINE v2 - improvements part 10 (#14332)Costa Tsaousis
* replication cancels pending queries on exit * log when waiting for inflight queries * when there are collected and not-collected metrics, use the context priority from the collected only * Write metadata with a faster pace * Remove journal file size limit and sync mode to 0 / Drop wal checkpoint for now * Wrap in a big transaction remaining metadata writes (test 1) * fix higher tiers when tiering iterations = 2 * dbengine always returns db-aligned points; query engine expands the queries by 2 points in every direction to have enough data for interpolation * Wrap in a big transaction metadata writes (test 2) * replication cancelling fix * do not first and last entry in replication when the db has no retention * fix internal check condition * Increase metadata write batch size * always apply error limit to dbengine logs * Remove code that processes the obsolete health.db files * cleanup in query.c * do not allow queries to go beyond db boundaries * prevent internal log for +1 delta in timestamp * detect gap pages in conflicts * double protection for gap injection in main cache * Add checkpoint to prevent large WAL while running Remove unused and duplicate functions * do not allocate chart cache dir if not needed * add more info to unittests * revert query expansion to satisfy unittests Co-authored-by: Stelios Fragkakis <52996999+stelfrag@users.noreply.github.com>
2023-01-26DBENGINE v2 - improvements part 9 (#14326)Costa Tsaousis
* on shutdown stop data collection for all hosts instead of freeing their memory * print number of sql statements per metadata host scan * print timings with metadata checking * use dbengine API to figure out of a database is legacy * Recalculate retention after a datafile deletion * validate child timestamps during replication * main cache uses a lockless aral per partition, protected by the partition index lock * prevent ML crash * Revert "main cache uses a lockless aral per partition, protected by the partition index lock" This reverts commit 6afc01527dc5c66548b4bc8a1d63c026c3149358. * Log direct index and binary searches * distribute metrics more evenly across time * statistics about retention recalculation * fix crash * Reverse the binary search to calculate retention * more optimization on retention calculation * removed commented old code Co-authored-by: Stelios Fragkakis <52996999+stelfrag@users.noreply.github.com>
2023-01-25DBENGINE v2 - improvements part 8 (#14319)Costa Tsaousis
* cache 100 pages for each size our tiers need * smarter page caching * account the caching structures * dynamic max number of cached pages * make variables const to ensure they are not changed * make sure replication timestamps do not go to the future * replication now sends chart and dimension states atomically; replication receivers ignores chart and dimension states when rbegin is also ignored * make sure all pages are flushed on shutdown * take into a