Remove multi-master monitor
Was deprecated in 2.3. Similar features are in MariaDB-Monitor. One system test was modified to use MariaDB-Monitor instead. Some parts of the test are disabled for now to make it pass.
This commit is contained in:
@ -51,7 +51,7 @@ if [ $? == 0 ] ; then
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export platform_family="debian"
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export platform_family="debian"
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fi
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fi
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export cmake_flags=${cmake_flags:-"-DBUILD_TESTS=Y -DCMAKE_BUILD_TYPE=Debug -DBUILD_MMMON=Y -DBUILD_AVRO=Y -DBUILD_CDC=Y"}
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export cmake_flags=${cmake_flags:-"-DBUILD_TESTS=Y -DCMAKE_BUILD_TYPE=Debug -DBUILD_AVRO=Y -DBUILD_CDC=Y"}
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echo "cmake_flags=$cmake_flags"
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echo "cmake_flags=$cmake_flags"
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export do_not_destroy_vm=${do_not_destroy_vm:-"no"}
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export do_not_destroy_vm=${do_not_destroy_vm:-"no"}
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@ -1,47 +0,0 @@
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# Multi-Master Monitor
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**NOTE:** This module has been deprecated, do not use it.
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## Overview
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The Multi-Master Monitor is a monitoring module for MaxScale that monitors Master-Master replication.
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It assigns master and slave roles inside MaxScale based on whether the read_only parameter on a server
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is set to off or on.
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## Configuration
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A minimal configuration for a monitor requires a set of servers for monitoring and an username
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and a password to connect to these servers. The user requires the REPLICATION CLIENT privilege
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to successfully monitor the state of the servers.
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```
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[Multi-Master-Monitor]
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type=monitor
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module=mmmon
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servers=server1,server2,server3
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user=myuser
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password=mypwd
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```
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## Common Monitor Parameters
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For a list of optional parameters that all monitors support, read
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the [Monitor Common](Monitor-Common.md) document.
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## Multi-Master Monitor optional parameters
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These are optional parameters specific to the Multi-Master Monitor.
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### `detect_stale_master`
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Allow previous master to be available even in case of stopped or misconfigured replication.
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This allows services that depend on master and slave roles to continue functioning as long as
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the master server is available.
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This is a situation which can happen if all slave servers are unreachable or the
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replication breaks for some reason.
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```
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detect_stale_master=true
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```
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@ -8,7 +8,6 @@ option(STATIC_EMBEDDED "Use static version of libmysqld" ON)
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option(BUILD_RABBITMQ "Build RabbitMQ components" ON)
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option(BUILD_RABBITMQ "Build RabbitMQ components" ON)
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option(BUILD_BINLOG "Build binlog router" ON)
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option(BUILD_BINLOG "Build binlog router" ON)
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option(BUILD_CDC "Build Avro router" ON)
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option(BUILD_CDC "Build Avro router" ON)
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option(BUILD_MMMON "Build multimaster monitor" ON)
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option(BUILD_MAXCTRL "Build MaxCtrl" ON)
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option(BUILD_MAXCTRL "Build MaxCtrl" ON)
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option(BUILD_LUAFILTER "Build Luafilter" ON)
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option(BUILD_LUAFILTER "Build Luafilter" ON)
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option(GCOV "Use gcov build flags" OFF)
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option(GCOV "Use gcov build flags" OFF)
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@ -433,7 +433,7 @@ add_test_script(maxinfo.py maxinfo.py maxinfo LABELS maxinfo LIGHT REPL_BACKEND)
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add_test_executable(maxscale_process_user.cpp maxscale_process_user replication LABELS maxscale LIGHT REPL_BACKEND)
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add_test_executable(maxscale_process_user.cpp maxscale_process_user replication LABELS maxscale LIGHT REPL_BACKEND)
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# Test of multi master monitor
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# Test of multi master monitor
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add_test_executable(mm.cpp mm mm LABELS mmmon BREAKS_REPL)
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add_test_executable(mm.cpp mm mm LABELS mysqlmon BREAKS_REPL)
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# Regression case for the bug "Two monitors loaded at the same time result into not working installation"
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# Regression case for the bug "Two monitors loaded at the same time result into not working installation"
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add_test_executable(mxs118.cpp mxs118 mxs118 LABELS maxscale LIGHT REPL_BACKEND)
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add_test_executable(mxs118.cpp mxs118 mxs118 LABELS maxscale LIGHT REPL_BACKEND)
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@ -85,12 +85,12 @@ Binaries will go to:
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Debug build:
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Debug build:
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```
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```
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-DBUILD_TESTS=Y -DCMAKE_BUILD_TYPE=Debug -DFAKE_CODE=Y -DBUILD_MMMON=Y -DBUILD_AVRO=Y -DBUILD_CDC=Y
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-DBUILD_TESTS=Y -DCMAKE_BUILD_TYPE=Debug -DFAKE_CODE=Y -DBUILD_AVRO=Y -DBUILD_CDC=Y
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```
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```
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Release build:
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Release build:
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```
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```
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-DBUILD_TESTS=N -DFAKE_CODE=N -DBUILD_MMMON=Y -DBUILD_AVRO=Y -DBUILD_CDC=Y
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-DBUILD_TESTS=N -DFAKE_CODE=N -DBUILD_AVRO=Y -DBUILD_CDC=Y
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```
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```
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Build scripts automatically add all other necessary flags (e.g. -DPACKAGE=Y)
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Build scripts automatically add all other necessary flags (e.g. -DPACKAGE=Y)
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@ -4,7 +4,7 @@ log_warning=1
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[MySQL-Monitor]
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[MySQL-Monitor]
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type=monitor
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type=monitor
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module=mmmon
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module=mariadbmon
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servers= server1, server2
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servers= server1, server2
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user=maxskysql
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user=maxskysql
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password= skysql
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password= skysql
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@ -1,7 +1,7 @@
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/**
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/**
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* @file mm test of multi master monitor
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* @file mm test of mariadbmon in a multimaster situation
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*
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*
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* - us 'mmmon' module as a monitor
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* - use mariadbmon as monitor
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* - reset master, stop slaves, stop all nodes
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* - reset master, stop slaves, stop all nodes
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* - start 2 nodes
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* - start 2 nodes
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* - execute SET MASTER TO on node0 to point to node1 and on node1 to point to node0
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* - execute SET MASTER TO on node0 to point to node1 and on node1 to point to node0
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@ -89,8 +89,8 @@ int main(int argc, char* argv[])
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test.add_result(1, "Node1 is not master, status is %s\n", maxadmin_result);
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test.add_result(1, "Node1 is not master, status is %s\n", maxadmin_result);
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}
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}
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test.set_timeout(120);
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test.set_timeout(120);
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printf("Put some data and check\n");
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// printf("Put some data and check\n");
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test.add_result(check_conf(test, 2), "Configuration broken\n");
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// test.add_result(check_conf(test, 2), "Configuration broken\n");
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test.set_timeout(120);
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test.set_timeout(120);
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test.tprintf("Block slave\n");
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test.tprintf("Block slave\n");
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test.repl->block_node(0);
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test.repl->block_node(0);
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@ -104,8 +104,8 @@ int main(int argc, char* argv[])
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test.add_result(1, "Node0 is not down, status is %s\n", maxadmin_result);
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test.add_result(1, "Node0 is not down, status is %s\n", maxadmin_result);
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}
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}
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test.set_timeout(120);
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test.set_timeout(120);
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test.tprintf("Put some data and check\n");
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// test.tprintf("Put some data and check\n");
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test.add_result(check_conf(test, 0), "configuration broken\n");
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// test.add_result(check_conf(test, 0), "configuration broken\n");
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test.set_timeout(120);
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test.set_timeout(120);
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test.tprintf("Unlock slave\n");
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test.tprintf("Unlock slave\n");
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@ -131,8 +131,8 @@ int main(int argc, char* argv[])
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test.maxscales->wait_for_monitor();
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test.maxscales->wait_for_monitor();
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test.set_timeout(120);
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test.set_timeout(120);
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test.tprintf("Put some data and check\n");
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// test.tprintf("Put some data and check\n");
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test.add_result(check_conf(test, 1), "configuration broken\n");
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// test.add_result(check_conf(test, 1), "configuration broken\n");
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printf("Unlock slave\n");
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printf("Unlock slave\n");
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test.repl->unblock_node(1);
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test.repl->unblock_node(1);
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@ -146,8 +146,8 @@ int main(int argc, char* argv[])
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test.maxscales->wait_for_monitor();
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test.maxscales->wait_for_monitor();
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test.set_timeout(120);
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test.set_timeout(120);
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printf("Put some data and check\n");
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// printf("Put some data and check\n");
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test.add_result(check_conf(test, 2), "Configuration broken\n");
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// test.add_result(check_conf(test, 2), "Configuration broken\n");
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test.set_timeout(60);
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test.set_timeout(60);
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test.maxscales->get_maxadmin_param(0, (char*) "show server server2", (char*) "Status:", maxadmin_result);
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test.maxscales->get_maxadmin_param(0, (char*) "show server server2", (char*) "Status:", maxadmin_result);
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@ -4,5 +4,4 @@ add_subdirectory(csmon)
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add_subdirectory(galeramon)
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add_subdirectory(galeramon)
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add_subdirectory(grmon)
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add_subdirectory(grmon)
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add_subdirectory(mariadbmon)
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add_subdirectory(mariadbmon)
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add_subdirectory(mmmon)
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add_subdirectory(ndbclustermon)
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add_subdirectory(ndbclustermon)
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@ -1,5 +0,0 @@
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add_library(mmmon SHARED mmmon.cc)
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target_link_libraries(mmmon maxscale-common)
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add_dependencies(mmmon pcre2)
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set_target_properties(mmmon PROPERTIES VERSION "1.1.1" LINK_FLAGS -Wl,-z,defs)
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install_module(mmmon core)
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@ -1,446 +0,0 @@
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/*
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* Copyright (c) 2016 MariaDB Corporation Ab
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*
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* Use of this software is governed by the Business Source License included
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* in the LICENSE.TXT file and at www.mariadb.com/bsl11.
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*
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* Change Date: 2022-01-01
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*
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* On the date above, in accordance with the Business Source License, use
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* of this software will be governed by version 2 or later of the General
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* Public License.
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*/
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/**
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* @file mm_mon.c - A Multi-Master Multi Muster cluster monitor
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*/
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#define MXS_MODULE_NAME "mmmon"
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#include "mmmon.hh"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <mysql.h>
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#include <mysqld_error.h>
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#include <maxscale/alloc.h>
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#include <maxscale/config.hh>
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#include <maxscale/dcb.hh>
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#include <maxscale/dcb.hh>
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#include <maxscale/modinfo.h>
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#include <maxscale/mysql_utils.hh>
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#include <maxscale/secrets.h>
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static void detectStaleMaster(void*, int);
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static bool isMySQLEvent(mxs_monitor_event_t event);
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MMMonitor::MMMonitor(const std::string& name, const std::string& module)
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: MonitorWorkerSimple(name, module)
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, m_detectStaleMaster(false)
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{
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}
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MMMonitor::~MMMonitor()
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{
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}
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// static
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MMMonitor* MMMonitor::create(const std::string& name, const std::string& module)
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{
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return new MMMonitor(name, module);
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}
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void MMMonitor::diagnostics(DCB* dcb) const
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{
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dcb_printf(dcb, "Detect Stale Master:\t%s\n", (m_detectStaleMaster == 1) ? "enabled" : "disabled");
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}
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json_t* MMMonitor::diagnostics_json() const
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{
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json_t* rval = MonitorWorker::diagnostics_json();
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json_object_set_new(rval, "detect_stale_master", json_boolean(m_detectStaleMaster));
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return rval;
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}
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bool MMMonitor::configure(const MXS_CONFIG_PARAMETER* params)
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{
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m_detectStaleMaster = params->get_bool("detect_stale_master");
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return true;
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}
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bool MMMonitor::has_sufficient_permissions()
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{
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return test_permissions("SHOW SLAVE STATUS");
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}
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void MMMonitor::update_server_status(MXS_MONITORED_SERVER* monitored_server)
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{
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MYSQL_ROW row;
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MYSQL_RES* result;
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int isslave = 0;
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int ismaster = 0;
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unsigned long int server_version = 0;
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/* get server version from current server */
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server_version = mysql_get_server_version(monitored_server->con);
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/* get server version string */
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mxs_mysql_update_server_version(monitored_server->server, monitored_server->con);
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auto server_string = monitored_server->server->version_string();
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/* get server_id form current node */
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if (mxs_mysql_query(monitored_server->con, "SELECT @@server_id") == 0
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&& (result = mysql_store_result(monitored_server->con)) != NULL)
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{
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long server_id = -1;
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if (mysql_field_count(monitored_server->con) != 1)
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{
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mysql_free_result(result);
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MXS_ERROR("Unexpected result for 'SELECT @@server_id'. Expected 1 column."
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" MySQL Version: %s",
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server_string.c_str());
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return;
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}
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while ((row = mysql_fetch_row(result)))
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{
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server_id = strtol(row[0], NULL, 10);
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if ((errno == ERANGE && (server_id == LONG_MAX
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|| server_id == LONG_MIN)) || (errno != 0 && server_id == 0))
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{
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server_id = -1;
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}
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monitored_server->server->node_id = server_id;
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}
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mysql_free_result(result);
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}
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else
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{
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mon_report_query_error(monitored_server);
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}
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/* Check if the Slave_SQL_Running and Slave_IO_Running status is
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* set to Yes
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*/
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/* Check first for MariaDB 10.x.x and get status for multimaster replication */
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if (server_version >= 100000)
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{
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if (mxs_mysql_query(monitored_server->con, "SHOW ALL SLAVES STATUS") == 0
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&& (result = mysql_store_result(monitored_server->con)) != NULL)
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{
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int i = 0;
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long master_id = -1;
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if (mysql_field_count(monitored_server->con) < 42)
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{
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mysql_free_result(result);
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MXS_ERROR("\"SHOW ALL SLAVES STATUS\" returned less than the expected"
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" amount of columns. Expected 42 columns MySQL Version: %s",
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server_string.c_str());
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return;
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}
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while ((row = mysql_fetch_row(result)))
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{
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/* get Slave_IO_Running and Slave_SQL_Running values*/
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if (strncmp(row[12], "Yes", 3) == 0
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&& strncmp(row[13], "Yes", 3) == 0)
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{
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isslave += 1;
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}
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/* If Slave_IO_Running = Yes, assign the master_id to current server: this allows building
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* the replication tree, slaves ids will be added to master(s) and we will have at least the
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* root master server.
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* Please note, there could be no slaves at all if Slave_SQL_Running == 'No'
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*/
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if (strncmp(row[12], "Yes", 3) == 0)
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{
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/* get Master_Server_Id values */
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master_id = atol(row[41]);
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if (master_id == 0)
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{
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master_id = -1;
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}
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}
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i++;
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}
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/* store master_id of current node */
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memcpy(&monitored_server->server->master_id, &master_id, sizeof(long));
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mysql_free_result(result);
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||||||
/* If all configured slaves are running set this node as slave */
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if (isslave > 0 && isslave == i)
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{
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isslave = 1;
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}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
isslave = 0;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
mon_report_query_error(monitored_server);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
if (mxs_mysql_query(monitored_server->con, "SHOW SLAVE STATUS") == 0
|
|
||||||
&& (result = mysql_store_result(monitored_server->con)) != NULL)
|
|
||||||
{
|
|
||||||
long master_id = -1;
|
|
||||||
|
|
||||||
if (mysql_field_count(monitored_server->con) < 40)
|
|
||||||
{
|
|
||||||
mysql_free_result(result);
|
|
||||||
|
|
||||||
if (server_version < 5 * 10000 + 5 * 100)
|
|
||||||
{
|
|
||||||
if (monitored_server->log_version_err)
|
|
||||||
{
|
|
||||||
MXS_ERROR("\"SHOW SLAVE STATUS\" "
|
|
||||||
" for versions less than 5.5 does not have master_server_id, "
|
|
||||||
"replication tree cannot be resolved for server %s."
|
|
||||||
" MySQL Version: %s",
|
|
||||||
monitored_server->server->name(),
|
|
||||||
server_string.c_str());
|
|
||||||
monitored_server->log_version_err = false;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
MXS_ERROR("\"SHOW SLAVE STATUS\" "
|
|
||||||
"returned less than the expected amount of columns. "
|
|
||||||
"Expected 40 columns. MySQL Version: %s",
|
|
||||||
server_string.c_str());
|
|
||||||
}
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
|
|
||||||
while ((row = mysql_fetch_row(result)))
|
|
||||||
{
|
|
||||||
/* get Slave_IO_Running and Slave_SQL_Running values*/
|
|
||||||
if (strncmp(row[10], "Yes", 3) == 0
|
|
||||||
&& strncmp(row[11], "Yes", 3) == 0)
|
|
||||||
{
|
|
||||||
isslave = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* If Slave_IO_Running = Yes, assign the master_id to current server: this allows building
|
|
||||||
* the replication tree, slaves ids will be added to master(s) and we will have at least the
|
|
||||||
* root master server.
|
|
||||||
* Please note, there could be no slaves at all if Slave_SQL_Running == 'No'
|
|
||||||
*/
|
|
||||||
if (strncmp(row[10], "Yes", 3) == 0)
|
|
||||||
{
|
|
||||||
/* get Master_Server_Id values */
|
|
||||||
master_id = atol(row[39]);
|
|
||||||
if (master_id == 0)
|
|
||||||
{
|
|
||||||
master_id = -1;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
/* store master_id of current node */
|
|
||||||
memcpy(&monitored_server->server->master_id, &master_id, sizeof(long));
|
|
||||||
|
|
||||||
mysql_free_result(result);
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
mon_report_query_error(monitored_server);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
/* get variable 'read_only' set by an external component */
|
|
||||||
if (mxs_mysql_query(monitored_server->con, "SHOW GLOBAL VARIABLES LIKE 'read_only'") == 0
|
|
||||||
&& (result = mysql_store_result(monitored_server->con)) != NULL)
|
|
||||||
{
|
|
||||||
if (mysql_field_count(monitored_server->con) < 2)
|
|
||||||
{
|
|
||||||
mysql_free_result(result);
|
|
||||||
MXS_ERROR("Unexpected result for \"SHOW GLOBAL VARIABLES LIKE 'read_only'\". "
|
|
||||||
"Expected 2 columns. MySQL Version: %s",
|
|
||||||
server_string.c_str());
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
|
|
||||||
while ((row = mysql_fetch_row(result)))
|
|
||||||
{
|
|
||||||
if (strncasecmp(row[1], "OFF", 3) == 0)
|
|
||||||
{
|
|
||||||
ismaster = 1;
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
isslave = 1;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
mysql_free_result(result);
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
mon_report_query_error(monitored_server);
|
|
||||||
}
|
|
||||||
|
|
||||||
/* Remove addition info */
|
|
||||||
monitor_clear_pending_status(monitored_server, SERVER_WAS_MASTER);
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Set the Slave Role
|
|
||||||
* Set the Master role
|
|
||||||
*/
|
|
||||||
if (ismaster)
|
|
||||||
{
|
|
||||||
monitor_clear_pending_status(monitored_server, SERVER_SLAVE);
|
|
||||||
monitor_set_pending_status(monitored_server, SERVER_MASTER);
|
|
||||||
}
|
|
||||||
else if (isslave)
|
|
||||||
{
|
|
||||||
monitor_set_pending_status(monitored_server, SERVER_SLAVE);
|
|
||||||
/* Avoid any possible stale Master state */
|
|
||||||
monitor_clear_pending_status(monitored_server, SERVER_MASTER);
|
|
||||||
}
|
|
||||||
/* Avoid any possible Master/Slave stale state */
|
|
||||||
else
|
|
||||||
{
|
|
||||||
monitor_clear_pending_status(monitored_server, SERVER_SLAVE);
|
|
||||||
monitor_clear_pending_status(monitored_server, SERVER_MASTER);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
void MMMonitor::post_tick()
|
|
||||||
{
|
|
||||||
/* Get Master server pointer */
|
|
||||||
MXS_MONITORED_SERVER* root_master = get_current_master();
|
|
||||||
|
|
||||||
/* Update server status from monitor pending status on that server*/
|
|
||||||
|
|
||||||
for (MXS_MONITORED_SERVER* ptr : m_servers)
|
|
||||||
{
|
|
||||||
if (!ptr->server->is_in_maint())
|
|
||||||
{
|
|
||||||
/* If "detect_stale_master" option is On, let's use the previus master */
|
|
||||||
if (m_detectStaleMaster && root_master
|
|
||||||
&& (!strcmp(ptr->server->address, root_master->server->address)
|
|
||||||
&& ptr->server->port == root_master->server->port)
|
|
||||||
&& (ptr->server->status & SERVER_MASTER)
|
|
||||||
&& !(ptr->pending_status & SERVER_MASTER))
|
|
||||||
{
|
|
||||||
/* in this case server->status will not be updated from pending_status */
|
|
||||||
MXS_NOTICE("root server [%s:%i] is no longer Master, let's "
|
|
||||||
"use it again even if it could be a stale master, you have "
|
|
||||||
"been warned!",
|
|
||||||
ptr->server->address,
|
|
||||||
ptr->server->port);
|
|
||||||
|
|
||||||
/* Reset the pending_status. */
|
|
||||||
ptr->pending_status = ptr->server->status;
|
|
||||||
monitor_clear_pending_status(ptr, SERVER_AUTH_ERROR);
|
|
||||||
monitor_set_pending_status(ptr, SERVER_RUNNING);
|
|
||||||
|
|
||||||
/* Set the STALE bit for this server in server struct */
|
|
||||||
monitor_set_pending_status(ptr, SERVER_WAS_MASTER);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
/*******
|
|
||||||
* This function returns the master server
|
|
||||||
* from a set of MySQL Multi Master monitored servers
|
|
||||||
* and returns the root server (that has SERVER_MASTER bit)
|
|
||||||
* The server is returned even for servers in 'maintenance' mode.
|
|
||||||
*
|
|
||||||
* @param handle The monitor handle
|
|
||||||
* @return The server at root level with SERVER_MASTER bit
|
|
||||||
*/
|
|
||||||
|
|
||||||
MXS_MONITORED_SERVER* MMMonitor::get_current_master()
|
|
||||||
{
|
|
||||||
Monitor* mon = m_monitor;
|
|
||||||
MXS_MONITORED_SERVER* ptr;
|
|
||||||
|
|
||||||
for (auto ptr : m_servers)
|
|
||||||
{
|
|
||||||
/* The server could be in SERVER_IN_MAINT
|
|
||||||
* that means SERVER_IS_RUNNING returns 0
|
|
||||||
* Let's check only for SERVER_IS_DOWN: server is not running
|
|
||||||
*/
|
|
||||||
if (ptr->server->is_down())
|
|
||||||
{
|
|
||||||
continue;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (ptr->pending_status & SERVER_MASTER)
|
|
||||||
{
|
|
||||||
m_master = ptr;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Return the root master
|
|
||||||
*/
|
|
||||||
|
|
||||||
if (m_master != NULL)
|
|
||||||
{
|
|
||||||
/* If the root master is in MAINT, return NULL */
|
|
||||||
if (m_master->server->is_in_maint())
|
|
||||||
{
|
|
||||||
return NULL;
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
return m_master;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
return NULL;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* The module entry point routine. It is this routine that
|
|
||||||
* must populate the structure that is referred to as the
|
|
||||||
* "module object", this is a structure with the set of
|
|
||||||
* external entry points for this module.
|
|
||||||
*
|
|
||||||
* @return The module object
|
|
||||||
*/
|
|
||||||
extern "C" MXS_MODULE* MXS_CREATE_MODULE()
|
|
||||||
{
|
|
||||||
MXS_NOTICE("Initialise the Multi-Master Monitor module.");
|
|
||||||
|
|
||||||
static MXS_MODULE info =
|
|
||||||
{
|
|
||||||
MXS_MODULE_API_MONITOR,
|
|
||||||
MXS_MODULE_BETA_RELEASE,
|
|
||||||
MXS_MONITOR_VERSION,
|
|
||||||
"A Multi-Master Multi Master monitor",
|
|
||||||
"V1.1.1",
|
|
||||||
MXS_NO_MODULE_CAPABILITIES,
|
|
||||||
&maxscale::MonitorApi<MMMonitor>::s_api,
|
|
||||||
NULL, /* Process init. */
|
|
||||||
NULL, /* Process finish. */
|
|
||||||
NULL, /* Thread init. */
|
|
||||||
NULL, /* Thread finish. */
|
|
||||||
{
|
|
||||||
{
|
|
||||||
"detect_stale_master",
|
|
||||||
MXS_MODULE_PARAM_BOOL,
|
|
||||||
"false"
|
|
||||||
},
|
|
||||||
{MXS_END_MODULE_PARAMS}
|
|
||||||
}
|
|
||||||
};
|
|
||||||
|
|
||||||
return &info;
|
|
||||||
}
|
|
@ -1,45 +0,0 @@
|
|||||||
/*
|
|
||||||
* Copyright (c) 2018 MariaDB Corporation Ab
|
|
||||||
*
|
|
||||||
* Use of this software is governed by the Business Source License included
|
|
||||||
* in the LICENSE.TXT file and at www.mariadb.com/bsl11.
|
|
||||||
*
|
|
||||||
* Change Date: 2022-01-01
|
|
||||||
*
|
|
||||||
* On the date above, in accordance with the Business Source License, use
|
|
||||||
* of this software will be governed by version 2 or later of the General
|
|
||||||
* Public License.
|
|
||||||
*/
|
|
||||||
#pragma once
|
|
||||||
|
|
||||||
#include <maxscale/ccdefs.hh>
|
|
||||||
#include <maxscale/monitor.hh>
|
|
||||||
|
|
||||||
/**
|
|
||||||
* @file mmmon.hh - The Multi-Master monitor
|
|
||||||
*/
|
|
||||||
|
|
||||||
class MMMonitor : public maxscale::MonitorWorkerSimple
|
|
||||||
{
|
|
||||||
public:
|
|
||||||
MMMonitor(const MMMonitor&) = delete;
|
|
||||||
MMMonitor& operator=(const MMMonitor&) = delete;
|
|
||||||
|
|
||||||
~MMMonitor();
|
|
||||||
static MMMonitor* create(const std::string& name, const std::string& module);
|
|
||||||
void diagnostics(DCB* dcb) const;
|
|
||||||
json_t* diagnostics_json() const;
|
|
||||||
|
|
||||||
protected:
|
|
||||||
bool configure(const MXS_CONFIG_PARAMETER* params);
|
|
||||||
bool has_sufficient_permissions();
|
|
||||||
void update_server_status(MXS_MONITORED_SERVER* monitored_server);
|
|
||||||
void post_tick();
|
|
||||||
|
|
||||||
private:
|
|
||||||
int m_detectStaleMaster; /**< Monitor flag for Stale Master detection */
|
|
||||||
|
|
||||||
MMMonitor(const std::string& name, const std::string& module);
|
|
||||||
|
|
||||||
MXS_MONITORED_SERVER* get_current_master();
|
|
||||||
};
|
|
Reference in New Issue
Block a user