hcq/MaxScale
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136 Commits

Author SHA1 Message Date
Esa Korhonen
b357717149 MXS-2304 Use get_bool() instead of config_get_bool() 2019-02-01 17:18:49 +02:00
Esa Korhonen
6326172325 MXS-2271 Rename basic Monitor fields 
Adds the m_-prefix.
 2019-01-28 15:41:00 +02:00
Esa Korhonen
8b53e30678 MXS-2220 Move server status functions inside class 2019-01-08 15:12:47 +02:00
Esa Korhonen
40485d746c MXS-2220 Change server name to constant string 2019-01-03 12:13:15 +02:00
Esa Korhonen
09aa54720d MXS-2220 Read server version using public methods 
Version related fields have been removed from the public class.
 2019-01-03 11:23:14 +02:00
Esa Korhonen
3e5818fcb6 MXS-2205 Convert mysql_utils.h to .hh 2018-12-03 14:05:21 +02:00
Esa Korhonen
a1e1ac0012 Move string_printf to maxbase 
Can be used in tests.
 2018-11-29 12:21:40 +02:00
Esa Korhonen
0a5a3309e0 Add missing quotes when printing server names 
Some of the log messages didn't have the quotes.
 2018-11-23 14:02:09 +02:00
Esa Korhonen
fb52e565fe Store capabilities of monitored server 
Checking the version number in various places in the code gets confusing.
It's better to check the version in one place and record the relevant data.
 2018-11-21 17:36:52 +02:00
Esa Korhonen
90da3a4d90 Remove MXS_MONITORED_SERVER mapping from MariaDBMon 
The mapping was rarely used.
 2018-11-21 10:30:11 +02:00
Esa Korhonen
bba0bc0f31 MXS-2158 Relax requirements for manual rejoin 
The operation is now allowed even if the rejoining server has empty gtid:s.
Auto-rejoin keeps the safeties on.
 2018-11-16 13:03:30 +02:00
Esa Korhonen
6a1cfddb43 MXS-2158 Clean up gtid updating during rejoin 
Error messages from update_gtids() are now printed. can_replicate_from()
no longer updates gtid:s.
 2018-11-16 12:56:24 +02:00
Esa Korhonen
a377a9fc5a Add gtid event in reset-replication 
Adds a "FLUSH TABLES" command at the end so that the new master has a non-empty
gtid_binlog_pos after the operation.
 2018-11-14 11:01:48 +02:00
Esa Korhonen
fb3ccc94d6 MXS-1944 Cleanup function parameters 
The naming and ordering is now a bit more consistent between promote() and demote().
 2018-11-07 12:55:59 +02:00
Esa Korhonen
e4e2235297 MXS-1944 Use time limited methods in rejoin 
Uses switchover time limit, since the typical rejoin of a standalone server
is somewhat similar to a switchover.
 2018-11-07 12:55:59 +02:00
Esa Korhonen
184e187732 Different cluster operations use different parameter types 
Only the parameters used by all operations are in the common class.
 2018-11-07 12:55:59 +02:00
Esa Korhonen
a4ce4e4613 MariaDBServer no longer uses ClusterOperation 
The functions in the server class now only use the general parameters object.
 2018-11-07 12:55:59 +02:00
Esa Korhonen
8877e7180b Continue separation of ClusterOperation elements 2018-11-07 12:55:59 +02:00
Esa Korhonen
90e6ff078a Divide ClusterOperation to two types 
The main class was getting unwieldly and too general. Dividing the fields
helps adding support for other operation types.

This commit leaves most data duplicated, later commits clean up the affected code.
 2018-11-07 12:55:59 +02:00
Esa Korhonen
2d61b78439 Fix low disk space maintenance 
The setting didn't work because the code updated a status flag which
would be overwritten before being read. Also, promotion code now checks
that the server is not in maintenance.
 2018-10-16 16:09:38 +03:00
Esa Korhonen
0c203fa02d Don't redirect duplicate connections 
The redirection method checks if a slave connection to the redirection
target already exists. If so, the connection is not modified. Also, failover
better detects duplicate connections during promotion.
 2018-10-16 16:09:38 +03:00
Esa Korhonen
f554ef770b Allow switchover for arbitrary topologies 
The demoted server no longer needs to be the master.
 2018-10-16 16:09:38 +03:00
Esa Korhonen
0cf8ea43f7 Redirect slaves of promotion target 
This affects situations where the promoted server is a relay or multimaster
group member.
 2018-10-16 16:09:38 +03:00
Esa Korhonen
2f76c48b06 Clarify server version error message 
The required server version is now printed.
 2018-10-11 11:41:46 +03:00
Esa Korhonen
c0945020ee Only running slave connections are checked for non-gtid replication 
This prevents auto-failover from being disabled due to recently generated or
non-functional slave connections.
 2018-10-11 11:41:46 +03:00
Esa Korhonen
f2067fcf7c Monitor cleanup 
Removes unused code, compacts lines, moves code.
No functional changes.
 2018-10-11 11:39:05 +03:00
Esa Korhonen
d0444ff054 SlaveStatus::to_short_string() uses member field 
The owner server name is now stored in a field.
 2018-10-10 17:26:48 +03:00
Esa Korhonen
c10fab977d Cleanup slave connection copy & merge 
The two cases are now separated. In switchover, the promotion and
demotion targets can swap connections between each other without worry.
In failover, the two connection lists must be merged semi-intelligently.

The slave connections of the two servers are now saved to the operation
descriptor object at the start of the operation. This allows slave status
updating during the operation.
 2018-10-09 14:29:49 +03:00
Markus Mäkelä
75ea1b6ea1
Fix formatting of new(std::nothrow) 
The code previously formatted everything as `new( std::nothrow)`.
 2018-10-04 21:50:44 +03:00
Esa Korhonen
374ae2fc9b Only redirect usable slaves 
Prevents pointless retrying/waiting when redirecting slaves.
 2018-10-04 20:11:12 +03:00
Esa Korhonen
80c731f02a Fix verify_master_failure 
The log message had changed, changed test to match. Also, the remaining
delay is now printed.
 2018-10-04 13:38:10 +03:00
Esa Korhonen
86ae0c3e4d MXS-1845 Remove unneeded code & cleanup 2018-10-04 13:38:10 +03:00
Esa Korhonen
a1b3a005dd MXS-1845 Relax cluster operation support requirements 
Support for more complicated topologies is quite close to completion and
in any case the function was too aggressive.
 2018-10-04 13:09:28 +03:00
Esa Korhonen
30eb21914f MXS-1845 Switchover cleanup 
Several small changes:
Binlog is flushed at the end of old master demotion.
Only new master is required to catch up to old master.
Use the same replication check method as failover.
 2018-10-04 11:45:33 +03:00
Esa Korhonen
49e85d9a28 MXS-1845 Add demotion code 
The master demotion in switchover now uses query retrying with
the switchover time limit.
 2018-10-04 11:45:33 +03:00
Niclas Antti
a4747f5b03 Revert the last commit, and an additional fix to the 
"Fix code for warnings:" commit.
 2018-10-03 17:22:10 +03:00
Niclas Antti
268e689dc5 Fix code for warnings: unused-but-set-variable and warn_unused_result. 2018-10-03 16:33:24 +03:00
Esa Korhonen
d14b9bfe43 MXS-1845 Cluster stabilization rewrite 
No longer writes events to the master, as this creates problems if the
promoted server was not the overall master. Instead, the slave status
output is inspected.
 2018-10-02 11:09:16 +03:00
Esa Korhonen
1ca5d02abb MXS-1845 Add redirection code 
Should work with multimaster replication.
 2018-10-02 11:09:16 +03:00
Esa Korhonen
6b8443aba6 MXS-1845 Complete server promotion code 
Now copies slave connections from the previous master. Promotion
code taken into use.
 2018-10-01 18:06:39 +03:00
Esa Korhonen
fe81b399b2 Use maxbase time and clock classes instead of std::chrono 2018-09-27 17:04:59 +03:00
Esa Korhonen
dd9ff27743 MXS-1845 Rewrite server promotion code 
In progress, does not yet overwrite existing code.

The new promotion mechanism automatically retries queries which timed out. It also
handles multimaster situations correctly.
 2018-09-26 13:20:29 +03:00
Esa Korhonen
c58041d4fb Format MariaDBMonitor source 
Some parts were manually edited for better results. No functional changes.
 2018-09-26 12:49:14 +03:00
Esa Korhonen
bfb1c3f1b3 MXS-1944 Store switchover parameters in an object 2018-09-26 12:42:26 +03:00
Esa Korhonen
c20a17238b MXS-1944 Store failover parameters in an object 
Several of the parameters are passed on from function to function. Having them all
in an object cleans things up and makes adding more data easier.
 2018-09-26 12:26:35 +03:00
Esa Korhonen
a3adcea524 MXS-1712 Cleanup reset-replication 
Now logs messages explaining what has been done. Scheduled events are
disabled/enabled during the operation. Redirection of slaves is done at
the end similar to failover/switchover.
 2018-09-21 10:54:36 +03:00
Markus Mäkelä
71ffef5708
Partially revert 4ba011266843857bbd3201e5b925a47e88e1808f 
Add back leading operator enforcement.
 2018-09-20 15:57:30 +03:00
Esa Korhonen
02ac394e38 Cleanup slave status handling 
Further reduce direct indexing slave status array to improve compatibility with
multimaster replication.
 2018-09-19 13:37:24 +03:00
Esa Korhonen
56c84541df MXS-1712 Add reset replication to MariaDB Monitor 
The 'reset_replication' module command deletes all slave connections and binlogs,
sets gtid to sequence 0 and restarts replication from the given master. Should be
only used if gtid:s are incompatible but the actual data is known to be in sync.
 2018-09-14 17:15:05 +03:00
Esa Korhonen
cb54880b99 MXS-1937 Cleanup event handling 
Event handling is now enabled by default. If the monitor cannot query the EVENTS-
table (most likely because of missing credentials), print an error suggesting to
turn the feature off.

When disabling events on a rejoining standalone server (likely a former master),
disable binlog event recording for the session. This prevents the ALTER EVENT
queries from generating binlog events.

Also added documentation and combined similar parts in the code.
 2018-09-14 16:54:24 +03:00