Implements #3105
Initial work to add elastisearch alerts
Initial implementation of ES alerts
Implements version check
Implements flow alerts format
Changes Elasticsearch index name
Comments the Elasticsearch alert endpoint
The point was discarded because of a bad RRD start time during the RRD creation.
The start time is now computed as "insertion_timestamp - heartbeat".
Fixes#3751
Such resources can be placed into the following plugin subdirs:
- ./httpdocs: javascript, css and similar, see plugins_utils.getHttpdocsDir
- ./modules: Lua modules, see plugins_utils.loadModule
- ./templates: HTML templates, see plugins_utils.renderTemplate
Basic rules to avoid corruptions:
- CONST_LUA_OK must be followed by a lua_push* / lua_newtable
- CONST_LUA_ERROR must *not* be followed by a lua_push* / lua_newtable
Detailed information can be found at https://www.lua.org/manual/5.2/manual.html#lua_CFunction
Class was not used and didn't handle concurrent accesses to strings,
yielding crashes such as
Thread 14 "stats_update.lu" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fffb3fff700 (LWP 25268)]
0x00005555556b9183 in IpAddress::intoa (this=0x28c, buf=0x7fffb3ffe030 "", bufLen=64, bitmask=255 '\377') at src/IpAddress.cpp:352
352 src/IpAddress.cpp: No such file or directory.
(gdb)
(gdb) bt
at src/GenericHash.cpp:222
#9 0x00005555556c0413 in NetworkInterface::walker (this=0x555556159e70, begin_slot=0x7fffb3ffe454, walk_all=true, wtype=walker_flows, walker=0x5555556c6b79 <host_flow_update_stats(GenericHashEntry*, void*, bool*)>,
user_data=0x7fffb3ffe458) at src/NetworkInterface.cpp:795
#10 0x00005555556c6f7c in NetworkInterface::periodicStatsUpdate (this=0x555556159e70, vm=0x7fffac0a5578) at src/NetworkInterface.cpp:2589
#11 0x0000555555671d62 in ntop_periodic_stats_update (vm=0x7fffac0a5578) at src/LuaEngine.cpp:6304
#12 0x000055555576c2f6 in luaD_precall ()
#13 0x0000555555777acd in luaV_execute ()
#14 0x000055555576c5cf in luaD_call ()
#15 0x000055555576c621 in luaD_callnoyield ()
#16 0x000055555576ba42 in luaD_rawrunprotected ()
#17 0x000055555576c91b in luaD_pcall ()
#18 0x0000555555769cd4 in lua_pcallk ()
#19 0x0000555555681e8a in LuaEngine::run_loaded_script (this=0x7fffac01fe10) at src/LuaEngine.cpp:12188
#20 0x000055555563eca2 in ThreadedActivity::runScript (this=0x555562aee4e0, now=1585309410, script_path=0x7fff88002620 "/usr/share/ntopng/scripts/callbacks/interface/stats_update.lua", iface=0x555556159e70, deadline=1585309420)
at src/ThreadedActivity.cpp:418
#21 0x00005555556ba04d in ThreadPool::run (this=0x5555624525a0) at src/ThreadPool.cpp:103
#22 0x00005555556b9c79 in doRun (ptr=0x5555624525a0) at src/ThreadPool.cpp:31
#23 0x00007ffff65aa6db in start_thread (arg=0x7fffb3fff700) at pthread_create.c:463
#24 0x00007ffff3ea388f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
A "shadow directory" is now populated when the reload occurs and then swapped as the active directory.
This avoids breaking the directory structure or changing files when other threads are possibly working
on them.
Fixes#3595
- Add informative label
- Add dropped alerts timeseries and chart
- Generate a system alert whenever alerts are dropped on a network interface
- Add a periodic activity warning when some alerts are dropped on that activity
Closes#3025
