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Diffstat (limited to 'dnsdist-carbon.cc')
| -rw-r--r-- | dnsdist-carbon.cc | 280 |
1 files changed, 280 insertions, 0 deletions
diff --git a/dnsdist-carbon.cc b/dnsdist-carbon.cc new file mode 100644 index 0000000..4f3859a --- /dev/null +++ b/dnsdist-carbon.cc @@ -0,0 +1,280 @@ +/* + * This file is part of PowerDNS or dnsdist. + * Copyright -- PowerDNS.COM B.V. and its contributors + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * In addition, for the avoidance of any doubt, permission is granted to + * link this program with OpenSSL and to (re)distribute the binaries + * produced as the result of such linking. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif +#include "iputils.hh" +#include "dolog.hh" +#include "sstuff.hh" + +#include "namespaces.hh" +#include "dnsdist.hh" +#include "threadname.hh" + +GlobalStateHolder<vector<CarbonConfig> > g_carbon; +static time_t s_start = time(nullptr); + +uint64_t uptimeOfProcess(const std::string& str) +{ + return time(nullptr) - s_start; +} + +void carbonDumpThread() +{ + try + { + setThreadName("dnsdist/carbon"); + auto localCarbon = g_carbon.getLocal(); + for(int numloops=0;;++numloops) { + if(localCarbon->empty()) { + sleep(1); + continue; + } + /* this is wrong, we use the interval of the first server + for every single one of them */ + if(numloops) { + const unsigned int interval = localCarbon->at(0).interval; + sleep(interval); + } + + for (const auto& conf : *localCarbon) { + const auto& server = conf.server; + const std::string& namespace_name = conf.namespace_name; + std::string hostname = conf.ourname; + if (hostname.empty()) { + try { + hostname = getCarbonHostName(); + } + catch(const std::exception& e) { + throw std::runtime_error(std::string("The 'ourname' setting in 'carbonServer()' has not been set and we are unable to determine the system's hostname: ") + e.what()); + } + } + const std::string& instance_name = conf.instance_name; + + try { + Socket s(server.sin4.sin_family, SOCK_STREAM); + s.setNonBlocking(); + s.connect(server); // we do the connect so the attempt happens while we gather stats + ostringstream str; + time_t now=time(0); + for(const auto& e : g_stats.entries) { + str<<namespace_name<<"."<<hostname<<"."<<instance_name<<"."<<e.first<<' '; + if(const auto& val = boost::get<pdns::stat_t*>(&e.second)) + str<<(*val)->load(); + else if (const auto& dval = boost::get<double*>(&e.second)) + str<<**dval; + else + str<<(*boost::get<DNSDistStats::statfunction_t>(&e.second))(e.first); + str<<' '<<now<<"\r\n"; + } + auto states = g_dstates.getLocal(); + for(const auto& state : *states) { + string serverName = state->getName().empty() ? state->remote.toStringWithPort() : state->getName(); + boost::replace_all(serverName, ".", "_"); + const string base = namespace_name + "." + hostname + "." + instance_name + ".servers." + serverName + "."; + str<<base<<"queries" << ' ' << state->queries.load() << " " << now << "\r\n"; + str<<base<<"responses" << ' ' << state->responses.load() << " " << now << "\r\n"; + str<<base<<"drops" << ' ' << state->reuseds.load() << " " << now << "\r\n"; + str<<base<<"latency" << ' ' << (state->availability != DownstreamState::Availability::Down ? state->latencyUsec/1000.0 : 0) << " " << now << "\r\n"; + str<<base<<"senderrors" << ' ' << state->sendErrors.load() << " " << now << "\r\n"; + str<<base<<"outstanding" << ' ' << state->outstanding.load() << " " << now << "\r\n"; + str<<base<<"tcpdiedsendingquery" << ' '<< state->tcpDiedSendingQuery.load() << " " << now << "\r\n"; + str<<base<<"tcpdiedreaddingresponse" << ' '<< state->tcpDiedReadingResponse.load() << " " << now << "\r\n"; + str<<base<<"tcpgaveup" << ' '<< state->tcpGaveUp.load() << " " << now << "\r\n"; + str<<base<<"tcpreadimeouts" << ' '<< state->tcpReadTimeouts.load() << " " << now << "\r\n"; + str<<base<<"tcpwritetimeouts" << ' '<< state->tcpWriteTimeouts.load() << " " << now << "\r\n"; + str<<base<<"tcpconnecttimeouts" << ' '<< state->tcpConnectTimeouts.load() << " " << now << "\r\n"; + str<<base<<"tcpcurrentconnections" << ' '<< state->tcpCurrentConnections.load() << " " << now << "\r\n"; + str<<base<<"tcpmaxconcurrentconnections" << ' '<< state->tcpMaxConcurrentConnections.load() << " " << now << "\r\n"; + str<<base<<"tcpnewconnections" << ' '<< state->tcpNewConnections.load() << " " << now << "\r\n"; + str<<base<<"tcpreusedconnections" << ' '<< state->tcpReusedConnections.load() << " " << now << "\r\n"; + str<<base<<"tlsresumptions" << ' '<< state->tlsResumptions.load() << " " << now << "\r\n"; + str<<base<<"tcpavgqueriesperconnection" << ' '<< state->tcpAvgQueriesPerConnection.load() << " " << now << "\r\n"; + str<<base<<"tcpavgconnectionduration" << ' '<< state->tcpAvgConnectionDuration.load() << " " << now << "\r\n"; + } + + std::map<std::string,uint64_t> frontendDuplicates; + for(const auto& front : g_frontends) { + if (front->udpFD == -1 && front->tcpFD == -1) + continue; + + string frontName = front->local.toStringWithPort() + (front->udpFD >= 0 ? "_udp" : "_tcp"); + boost::replace_all(frontName, ".", "_"); + auto dupPair = frontendDuplicates.insert({frontName, 1}); + if (!dupPair.second) { + frontName = frontName + "_" + std::to_string(dupPair.first->second); + ++(dupPair.first->second); + } + + const string base = namespace_name + "." + hostname + "." + instance_name + ".frontends." + frontName + "."; + str<<base<<"queries" << ' ' << front->queries.load() << " " << now << "\r\n"; + str<<base<<"responses" << ' ' << front->responses.load() << " " << now << "\r\n"; + str<<base<<"tcpdiedreadingquery" << ' '<< front->tcpDiedReadingQuery.load() << " " << now << "\r\n"; + str<<base<<"tcpdiedsendingresponse" << ' '<< front->tcpDiedSendingResponse.load() << " " << now << "\r\n"; + str<<base<<"tcpgaveup" << ' '<< front->tcpGaveUp.load() << " " << now << "\r\n"; + str<<base<<"tcpclientimeouts" << ' '<< front->tcpClientTimeouts.load() << " " << now << "\r\n"; + str<<base<<"tcpdownstreamtimeouts" << ' '<< front->tcpDownstreamTimeouts.load() << " " << now << "\r\n"; + str<<base<<"tcpcurrentconnections" << ' '<< front->tcpCurrentConnections.load() << " " << now << "\r\n"; + str<<base<<"tcpmaxconcurrentconnections" << ' '<< front->tcpMaxConcurrentConnections.load() << " " << now << "\r\n"; + str<<base<<"tcpavgqueriesperconnection" << ' '<< front->tcpAvgQueriesPerConnection.load() << " " << now << "\r\n"; + str<<base<<"tcpavgconnectionduration" << ' '<< front->tcpAvgConnectionDuration.load() << " " << now << "\r\n"; + str<<base<<"tls10-queries" << ' ' << front->tls10queries.load() << " " << now << "\r\n"; + str<<base<<"tls11-queries" << ' ' << front->tls11queries.load() << " " << now << "\r\n"; + str<<base<<"tls12-queries" << ' ' << front->tls12queries.load() << " " << now << "\r\n"; + str<<base<<"tls13-queries" << ' ' << front->tls13queries.load() << " " << now << "\r\n"; + str<<base<<"tls-unknown-queries" << ' ' << front->tlsUnknownqueries.load() << " " << now << "\r\n"; + str<<base<<"tlsnewsessions" << ' ' << front->tlsNewSessions.load() << " " << now << "\r\n"; + str<<base<<"tlsresumptions" << ' ' << front->tlsResumptions.load() << " " << now << "\r\n"; + str<<base<<"tlsunknownticketkeys" << ' ' << front->tlsUnknownTicketKey.load() << " " << now << "\r\n"; + str<<base<<"tlsinactiveticketkeys" << ' ' << front->tlsInactiveTicketKey.load() << " " << now << "\r\n"; + const TLSErrorCounters* errorCounters = nullptr; + if (front->tlsFrontend != nullptr) { + errorCounters = &front->tlsFrontend->d_tlsCounters; + } + else if (front->dohFrontend != nullptr) { + errorCounters = &front->dohFrontend->d_tlsCounters; + } + if (errorCounters != nullptr) { + str<<base<<"tlsdhkeytoosmall" << ' ' << errorCounters->d_dhKeyTooSmall << " " << now << "\r\n"; + str<<base<<"tlsinappropriatefallback" << ' ' << errorCounters->d_inappropriateFallBack << " " << now << "\r\n"; + str<<base<<"tlsnosharedcipher" << ' ' << errorCounters->d_noSharedCipher << " " << now << "\r\n"; + str<<base<<"tlsunknownciphertype" << ' ' << errorCounters->d_unknownCipherType << " " << now << "\r\n"; + str<<base<<"tlsunknownkeyexchangetype" << ' ' << errorCounters->d_unknownKeyExchangeType << " " << now << "\r\n"; + str<<base<<"tlsunknownprotocol" << ' ' << errorCounters->d_unknownProtocol << " " << now << "\r\n"; + str<<base<<"tlsunsupportedec" << ' ' << errorCounters->d_unsupportedEC << " " << now << "\r\n"; + str<<base<<"tlsunsupportedprotocol" << ' ' << errorCounters->d_unsupportedProtocol << " " << now << "\r\n"; + } + } + + auto localPools = g_pools.getLocal(); + for (const auto& entry : *localPools) { + string poolName = entry.first; + boost::replace_all(poolName, ".", "_"); + if (poolName.empty()) { + poolName = "_default_"; + } + const string base = namespace_name + "." + hostname + "." + instance_name + ".pools." + poolName + "."; + const std::shared_ptr<ServerPool> pool = entry.second; + str<<base<<"servers" << " " << pool->countServers(false) << " " << now << "\r\n"; + str<<base<<"servers-up" << " " << pool->countServers(true) << " " << now << "\r\n"; + if (pool->packetCache != nullptr) { + const auto& cache = pool->packetCache; + str<<base<<"cache-size" << " " << cache->getMaxEntries() << " " << now << "\r\n"; + str<<base<<"cache-entries" << " " << cache->getEntriesCount() << " " << now << "\r\n"; + str<<base<<"cache-hits" << " " << cache->getHits() << " " << now << "\r\n"; + str<<base<<"cache-misses" << " " << cache->getMisses() << " " << now << "\r\n"; + str<<base<<"cache-deferred-inserts" << " " << cache->getDeferredInserts() << " " << now << "\r\n"; + str<<base<<"cache-deferred-lookups" << " " << cache->getDeferredLookups() << " " << now << "\r\n"; + str<<base<<"cache-lookup-collisions" << " " << cache->getLookupCollisions() << " " << now << "\r\n"; + str<<base<<"cache-insert-collisions" << " " << cache->getInsertCollisions() << " " << now << "\r\n"; + str<<base<<"cache-ttl-too-shorts" << " " << cache->getTTLTooShorts() << " " << now << "\r\n"; + } + } + +#ifdef HAVE_DNS_OVER_HTTPS + { + std::map<std::string,uint64_t> dohFrontendDuplicates; + const string base = "dnsdist." + hostname + ".main.doh."; + for(const auto& doh : g_dohlocals) { + string name = doh->d_local.toStringWithPort(); + boost::replace_all(name, ".", "_"); + boost::replace_all(name, ":", "_"); + boost::replace_all(name, "[", "_"); + boost::replace_all(name, "]", "_"); + + auto dupPair = dohFrontendDuplicates.insert({name, 1}); + if (!dupPair.second) { + name = name + "_" + std::to_string(dupPair.first->second); + ++(dupPair.first->second); + } + + vector<pair<const char*, const pdns::stat_t&>> v{ + {"http-connects", doh->d_httpconnects}, + {"http1-queries", doh->d_http1Stats.d_nbQueries}, + {"http2-queries", doh->d_http2Stats.d_nbQueries}, + {"http1-200-responses", doh->d_http1Stats.d_nb200Responses}, + {"http2-200-responses", doh->d_http2Stats.d_nb200Responses}, + {"http1-400-responses", doh->d_http1Stats.d_nb400Responses}, + {"http2-400-responses", doh->d_http2Stats.d_nb400Responses}, + {"http1-403-responses", doh->d_http1Stats.d_nb403Responses}, + {"http2-403-responses", doh->d_http2Stats.d_nb403Responses}, + {"http1-500-responses", doh->d_http1Stats.d_nb500Responses}, + {"http2-500-responses", doh->d_http2Stats.d_nb500Responses}, + {"http1-502-responses", doh->d_http1Stats.d_nb502Responses}, + {"http2-502-responses", doh->d_http2Stats.d_nb502Responses}, + {"http1-other-responses", doh->d_http1Stats.d_nbOtherResponses}, + {"http2-other-responses", doh->d_http2Stats.d_nbOtherResponses}, + {"get-queries", doh->d_getqueries}, + {"post-queries", doh->d_postqueries}, + {"bad-requests", doh->d_badrequests}, + {"error-responses", doh->d_errorresponses}, + {"redirect-responses", doh->d_redirectresponses}, + {"valid-responses", doh->d_validresponses} + }; + + for(const auto& item : v) { + str<<base<<name<<"."<<item.first << " " << item.second << " " << now <<"\r\n"; + } + } + } +#endif /* HAVE_DNS_OVER_HTTPS */ + + { + std::string qname; + auto records = g_qcount.records.write_lock(); + for (const auto &record : *records) { + qname = record.first; + boost::replace_all(qname, ".", "_"); + str<<"dnsdist.querycount." << qname << ".queries " << record.second << " " << now << "\r\n"; + } + records->clear(); + } + + const string msg = str.str(); + + int ret = waitForRWData(s.getHandle(), false, 1 , 0); + if(ret <= 0 ) { + vinfolog("Unable to write data to carbon server on %s: %s", server.toStringWithPort(), (ret<0 ? stringerror() : "Timeout")); + continue; + } + s.setBlocking(); + writen2(s.getHandle(), msg.c_str(), msg.size()); + } + catch(const std::exception& e) { + warnlog("Problem sending carbon data: %s", e.what()); + } + } + } + } + catch(const std::exception& e) + { + errlog("Carbon thread died: %s", e.what()); + } + catch(const PDNSException& e) + { + errlog("Carbon thread died, PDNSException: %s", e.reason); + } + catch(...) + { + errlog("Carbon thread died"); + } +} |