[MXS-1526] Malformed disk image error - Jira

Details

Type: Bug
Status: Closed (View Workflow)
Priority: Major
Resolution: Fixed
Affects Version/s: 2.1.10
Fix Version/s: 2.2.2
Component/s: Authenticator
Labels:
- authentication
- mysql
Environment:
CentOS 7.2
[root@maxscale ~]# uname -r
3.10.0-327.4.5.el7.x86_64

Description

Folks,

I've been working with the dynamic commands on MariaDB Maxscale 2.1.10 and when loading configurations, I found the below:

2017-11-16 12:48:56   error  : [mysqlmon] No Master can be determined

2017-11-16 12:48:56   error  : (6) [MySQLAuth] Failed to delete old users: database disk image is malformed

2017-11-16 12:48:56   notice : (6) [MySQLAuth] [rwsplit-service] No users were loaded but 'inject_service_user' is enabled. Enabling service credentials for authentication until database users have been successfully loaded.

It's relevant to say that, it's a new Maxscale server but, for existing backends, so, user/password for MySQLAuth does exist.

How to repeat it:

CentOS 7.2 fresh install
Get Maxscale 2.1.10 rpm and setup
Put together a basic config

[root@maxscale ~]# cat ~/maxscale_configs/basic.cnf

[maxscale]

threads=auto

[rwsplit-service]

type=service

router=readwritesplit

user=maxuser

passwd=FD08F35D87C442AABA518CFB7471D691

[CLI]

type=service

router=cli

[CLI Listener]

type=listener

service=CLI

protocol=maxscaled

socket=default

Start maxscale:

[root@maxscale ~]# maxscale -f ~/maxscale_configs/basic.cnf

[root@maxscale ~]#

Execute the below static script:

[root@maxscale ~]# cat maxscale_objects/readwritesplitter.obj

#!/bin/bash

#: the below will create the readwritesplitter for defined replication servers

maxadmin create monitor cluster-monitor mysqlmon

maxadmin alter monitor cluster-monitor user=maxuser password=FD08F35D87C442AABA518CFB7471D691 monitor_interval=10000

maxadmin restart monitor cluster-monitor

maxadmin list monitors

maxadmin create listener rwsplit-service rwsplit-listener 0.0.0.0 4006

maxadmin list listeners

maxadmin list services

maxadmin create server prod_mariadb01 192.168.50.11 3306

maxadmin create server prod_mariadb02 192.168.50.12 3306

maxadmin create server prod_mariadb03 192.168.50.13 3306

maxadmin list servers

maxadmin add server prod_mariadb01 cluster-monitor rwsplit-service

maxadmin add server prod_mariadb02 cluster-monitor rwsplit-service

maxadmin add server prod_mariadb03 cluster-monitor rwsplit-service

maxadmin list servers

Logs will be like below:

MariaDB MaxScale  /var/log/maxscale/maxscale.log  Thu Nov 16 12:05:49 2017

----------------------------------------------------------------------------

2017-11-16 12:05:49   notice : Working directory: /var/log/maxscale

2017-11-16 12:05:49   notice : MariaDB MaxScale 2.1.10 started

2017-11-16 12:05:49   notice : MaxScale is running in process 4269

2017-11-16 12:05:49   notice : Configuration file: /root/maxscale_configs/basic.cnf

2017-11-16 12:05:49   notice : Log directory: /var/log/maxscale

2017-11-16 12:05:49   notice : Data directory: /var/lib/maxscale

2017-11-16 12:05:49   notice : Module directory: /usr/lib64/maxscale

2017-11-16 12:05:49   notice : Service cache: /var/cache/maxscale

2017-11-16 12:05:49   notice : Loading /root/maxscale_configs/basic.cnf.

2017-11-16 12:05:49   notice : /root/maxscale_configs/basic.cnf.d does not exist, not reading.

2017-11-16 12:05:49   notice : [cli] Initialise CLI router module

2017-11-16 12:05:49   notice : Loaded module cli: V1.0.0 from /usr/lib64/maxscale/libcli.so

2017-11-16 12:05:49   notice : [readwritesplit] Initializing statement-based read/write split router module.

2017-11-16 12:05:49   notice : Loaded module readwritesplit: V1.1.0 from /usr/lib64/maxscale/libreadwritesplit.so

2017-11-16 12:05:49   notice : Loaded module maxscaled: V2.0.0 from /usr/lib64/maxscale/libmaxscaled.so

2017-11-16 12:05:49   notice : Loaded module MaxAdminAuth: V2.1.0 from /usr/lib64/maxscale/libMaxAdminAuth.so

2017-11-16 12:05:49   notice : No query classifier specified, using default 'qc_sqlite'.

2017-11-16 12:05:49   notice : Loaded module qc_sqlite: V1.0.0 from /usr/lib64/maxscale/libqc_sqlite.so

2017-11-16 12:05:49   warning: Service 'rwsplit-service' has no listeners defined.

2017-11-16 12:05:49   notice : Listening for connections at [/tmp/maxadmin.sock]:0 with protocol MaxScale Admin

2017-11-16 12:05:49   notice : MaxScale started with 1 server threads.

2017-11-16 12:05:49   notice : Started MaxScale log flusher.

2017-11-16 12:48:56   notice : (2) [mysqlmon] Initialise the MySQL Monitor module.

2017-11-16 12:48:56   notice : (2) Loaded module mysqlmon: V1.5.0 from /usr/lib64/maxscale/libmysqlmon.so

2017-11-16 12:48:56   notice : (2) Created monitor 'cluster-monitor'

2017-11-16 12:48:56   notice : (3) Updated monitor 'cluster-monitor': user=maxuser

2017-11-16 12:48:56   notice : (3) Updated monitor 'cluster-monitor': password=FD08F35D87C442AABA518CFB7471D691

2017-11-16 12:48:56   notice : (3) Updated monitor 'cluster-monitor': monitor_interval=10000

2017-11-16 12:48:56   notice : (6) Loaded module MySQLClient: V1.1.0 from /usr/lib64/maxscale/libMySQLClient.so

2017-11-16 12:48:56   notice : (6) Loaded module MySQLAuth: V1.1.0 from /usr/lib64/maxscale/libMySQLAuth.so

2017-11-16 12:48:56   notice : (6) Using encrypted passwords. Encryption key: '/var/lib/maxscale/.secrets'.

2017-11-16 12:48:56   error  : [mysqlmon] No Master can be determined

2017-11-16 12:48:56   error  : (6) [MySQLAuth] Failed to delete old users: database disk image is malformed

2017-11-16 12:48:56   notice : (6) [MySQLAuth] [rwsplit-service] No users were loaded but 'inject_service_user' is enabled. Enabling service credentials for authentication until database users have been successfully loaded.

2017-11-16 12:48:56   notice : (6) Listening for connections at [0.0.0.0]:4006 with protocol MySQL

2017-11-16 12:48:56   notice : (6) Created listener 'rwsplit-listener' at 0.0.0.0:4006 for service 'rwsplit-service'

2017-11-16 12:48:56   notice : (10) Loaded module MySQLBackend: V2.0.0 from /usr/lib64/maxscale/libMySQLBackend.so

2017-11-16 12:48:56   notice : (10) Loaded module MySQLBackendAuth: V1.0.0 from /usr/lib64/maxscale/libMySQLBackendAuth.so

2017-11-16 12:48:56   notice : (10) Created server 'prod_mariadb01' at 192.168.50.11:3306

2017-11-16 12:48:56   notice : (11) Created server 'prod_mariadb02' at 192.168.50.12:3306

2017-11-16 12:48:56   notice : (12) Created server 'prod_mariadb03' at 192.168.50.13:3306

2017-11-16 12:48:56   notice : (14) Added server 'prod_mariadb01' to monitor 'cluster-monitor'

2017-11-16 12:48:56   notice : (14) Added server 'prod_mariadb01' to service 'rwsplit-service'

^@2017-11-16 12:48:56   notice : Server changed state: prod_mariadb01[192.168.50.11:3306]: new_master. [Running] -> [Master, Running]

2017-11-16 12:48:56   notice : [mysqlmon] A Master Server is now available: 192.168.50.11:3306

2017-11-16 12:48:56   notice : (15) Added server 'prod_mariadb02' to monitor 'cluster-monitor'

2017-11-16 12:48:56   notice : (15) Added server 'prod_mariadb02' to service 'rwsplit-service'

2017-11-16 12:48:56   notice : Server changed state: prod_mariadb02[192.168.50.12:3306]: new_slave. [Running] -> [Slave, Running]

2017-11-16 12:48:56   notice : (16) Added server 'prod_mariadb03' to monitor 'cluster-monitor'

2017-11-16 12:48:56   notice : (16) Added server 'prod_mariadb03' to service 'rwsplit-service'

2017-11-16 12:48:57   notice : Server changed state: prod_mariadb03[192.168.50.13:3306]: new_slave. [Running] -> [Slave, Running]

Thanks folks.

Attachments

Issue Links

is blocked by

MXS-1527 SELECT with session var is not supported

Closed

Activity

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markus makela added a comment - 2018-11-27 10:59

This was fixed in 2.2.

markus makela added a comment - 2018-11-27 10:59 This was fixed in 2.2.

Wagner Bianchi (Inactive) added a comment - 2017-11-16 14:34 - edited

Folks,

What I did, I removed the underlying sqllite databases used for cache users:

/var/cache/maxscale/router_readwritesplit/listener_readwritesplit/cache/dbusers.db

/var/cache/maxscale/readwritesplit_router/readwritesplit_listener/cache/dbusers.db

And then tested two different situations, one with authenticator_options=inject_service_user=false and the other one removing that variable/configuration for the listener, as the default value will be true, enabled by default. Below the log output:

#: authenticator_options=inject_service_user=false

MariaDB MaxScale  /var/log/maxscale/maxscale.log  Thu Nov 16 14:17:43 2017

----------------------------------------------------------------------------

^@2017-11-16 14:17:43   notice : Working directory: /var/log/maxscale

2017-11-16 14:17:43   notice : MariaDB MaxScale 2.1.10 started

2017-11-16 14:17:43   notice : MaxScale is running in process 4429

2017-11-16 14:17:43   notice : Configuration file: /root/maxscale_configs/basic.cnf

2017-11-16 14:17:43   notice : Log directory: /var/log/maxscale

2017-11-16 14:17:43   notice : Data directory: /var/lib/maxscale

2017-11-16 14:17:43   notice : Module directory: /usr/lib64/maxscale

2017-11-16 14:17:43   notice : Service cache: /var/cache/maxscale

2017-11-16 14:17:43   notice : Loading /root/maxscale_configs/basic.cnf.

2017-11-16 14:17:43   notice : /root/maxscale_configs/basic.cnf.d does not exist, not reading.

2017-11-16 14:17:43   notice : Loading generated configuration files from '/var/lib/maxscale/maxscale.cnf.d'

2017-11-16 14:17:43   notice : Loading /var/lib/maxscale/maxscale.cnf.d/cluster-monitor.cnf.

2017-11-16 14:17:43   notice : Loading /var/lib/maxscale/maxscale.cnf.d/prod_mariadb01.cnf.

2017-11-16 14:17:43   notice : Loading /var/lib/maxscale/maxscale.cnf.d/prod_mariadb02.cnf.

2017-11-16 14:17:43   notice : Loading /var/lib/maxscale/maxscale.cnf.d/prod_mariadb03.cnf.

2017-11-16 14:17:43   notice : Loading /var/lib/maxscale/maxscale.cnf.d/rwsplit-service.cnf.

2017-11-16 14:17:43   notice : Loading /var/lib/maxscale/maxscale.cnf.d/rwsplit-listener.cnf.

2017-11-16 14:17:43   notice : [mysqlmon] Initialise the MySQL Monitor module.

2017-11-16 14:17:43   notice : Loaded module mysqlmon: V1.5.0 from /usr/lib64/maxscale/libmysqlmon.so

2017-11-16 14:17:43   notice : [cli] Initialise CLI router module

2017-11-16 14:17:43   notice : Loaded module cli: V1.0.0 from /usr/lib64/maxscale/libcli.so

2017-11-16 14:17:43   notice : [readwritesplit] Initializing statement-based read/write split router module.

2017-11-16 14:17:43   notice : Loaded module readwritesplit: V1.1.0 from /usr/lib64/maxscale/libreadwritesplit.so

2017-11-16 14:17:43   notice : Loaded module MySQLBackendAuth: V1.0.0 from /usr/lib64/maxscale/libMySQLBackendAuth.so

2017-11-16 14:17:43   notice : Loaded module MySQLAuth: V1.1.0 from /usr/lib64/maxscale/libMySQLAuth.so

2017-11-16 14:17:43   notice : Loaded module maxscaled: V2.0.0 from /usr/lib64/maxscale/libmaxscaled.so

2017-11-16 14:17:43   notice : Loaded module MaxAdminAuth: V2.1.0 from /usr/lib64/maxscale/libMaxAdminAuth.so

2017-11-16 14:17:43   notice : No query classifier specified, using default 'qc_sqlite'.

2017-11-16 14:17:43   notice : Loaded module qc_sqlite: V1.0.0 from /usr/lib64/maxscale/libqc_sqlite.so

2017-11-16 14:17:43   notice : Using encrypted passwords. Encryption key: '/var/lib/maxscale/.secrets'.

2017-11-16 14:17:43   notice : Loaded module MySQLClient: V1.1.0 from /usr/lib64/maxscale/libMySQLClient.so

2017-11-16 14:17:43   notice : Server changed state: prod_mariadb01[192.168.50.11:3306]: new_master. [Running] -> [Master, Running]

2017-11-16 14:17:43   notice : Server changed state: prod_mariadb02[192.168.50.12:3306]: new_slave. [Running] -> [Slave, Running]

2017-11-16 14:17:43   notice : Server changed state: prod_mariadb03[192.168.50.13:3306]: new_slave. [Running] -> [Slave, Running]

2017-11-16 14:17:43   notice : [mysqlmon] A Master Server is now available: 192.168.50.11:3306

2017-11-16 14:18:45   notice : [MySQLAuth] [rwsplit-service] Loaded 11 MySQL users for listener rwsplit-listener.

2017-11-16 14:18:45   notice : Listening for connections at [0.0.0.0]:4006 with protocol MySQL

2017-11-16 14:18:45   notice : Listening for connections at [/tmp/maxadmin.sock]:0 with protocol MaxScale Admin

2017-11-16 14:18:45   notice : MaxScale started with 1 server threads.

2017-11-16 14:18:45   notice : Started MaxScale log flusher.

^@2017-11-16 14:19:11   notice : Waiting for housekeeper to shut down.

2017-11-16 14:19:12   notice : Finished MaxScale log flusher.

2017-11-16 14:19:12   notice : Housekeeper shutting down.

2017-11-16 14:19:12   notice : Housekeeper has shut down.

2017-11-16 14:19:12   notice : MaxScale received signal SIGTERM. Exiting.

2017-11-16 14:19:12   notice : MaxScale is shutting down.

2017-11-16 14:19:12   notice : MaxScale shutdown completed.

2017-11-16 14:19:12   MariaDB MaxScale is shut down.

----------------------------------------------------

and then,

#: without inject_service_user

MariaDB MaxScale  /var/log/maxscale/maxscale.log  Thu Nov 16 14:20:48 2017

----------------------------------------------------------------------------

^@^@2017-11-16 14:20:48   notice : Working directory: /var/log/maxscale

2017-11-16 14:20:48   notice : MariaDB MaxScale 2.1.10 started

2017-11-16 14:20:48   notice : MaxScale is running in process 4438

2017-11-16 14:20:48   notice : Configuration file: /root/maxscale_configs/basic.cnf

2017-11-16 14:20:48   notice : Log directory: /var/log/maxscale

2017-11-16 14:20:48   notice : Data directory: /var/lib/maxscale

2017-11-16 14:20:48   notice : Module directory: /usr/lib64/maxscale

2017-11-16 14:20:48   notice : Service cache: /var/cache/maxscale

2017-11-16 14:20:48   notice : Loading /root/maxscale_configs/basic.cnf.

2017-11-16 14:20:48   notice : /root/maxscale_configs/basic.cnf.d does not exist, not reading.

2017-11-16 14:20:48   notice : Loading generated configuration files from '/var/lib/maxscale/maxscale.cnf.d'

2017-11-16 14:20:48   notice : Loading /var/lib/maxscale/maxscale.cnf.d/cluster-monitor.cnf.

2017-11-16 14:20:48   notice : Loading /var/lib/maxscale/maxscale.cnf.d/prod_mariadb01.cnf.

2017-11-16 14:20:48   notice : Loading /var/lib/maxscale/maxscale.cnf.d/prod_mariadb02.cnf.

2017-11-16 14:20:48   notice : Loading /var/lib/maxscale/maxscale.cnf.d/prod_mariadb03.cnf.

2017-11-16 14:20:48   notice : Loading /var/lib/maxscale/maxscale.cnf.d/rwsplit-service.cnf.

2017-11-16 14:20:48   notice : Loading /var/lib/maxscale/maxscale.cnf.d/rwsplit-listener.cnf.

2017-11-16 14:20:48   notice : [mysqlmon] Initialise the MySQL Monitor module.

2017-11-16 14:20:48   notice : Loaded module mysqlmon: V1.5.0 from /usr/lib64/maxscale/libmysqlmon.so

2017-11-16 14:20:48   notice : [cli] Initialise CLI router module

2017-11-16 14:20:48   notice : Loaded module cli: V1.0.0 from /usr/lib64/maxscale/libcli.so

2017-11-16 14:20:48   notice : [readwritesplit] Initializing statement-based read/write split router module.

2017-11-16 14:20:48   notice : Loaded module readwritesplit: V1.1.0 from /usr/lib64/maxscale/libreadwritesplit.so

2017-11-16 14:20:48   notice : Loaded module MySQLBackendAuth: V1.0.0 from /usr/lib64/maxscale/libMySQLBackendAuth.so

2017-11-16 14:20:48   notice : Loaded module MySQLAuth: V1.1.0 from /usr/lib64/maxscale/libMySQLAuth.so

2017-11-16 14:20:48   notice : Loaded module maxscaled: V2.0.0 from /usr/lib64/maxscale/libmaxscaled.so

2017-11-16 14:20:48   notice : Loaded module MaxAdminAuth: V2.1.0 from /usr/lib64/maxscale/libMaxAdminAuth.so

2017-11-16 14:20:48   notice : No query classifier specified, using default 'qc_sqlite'.

2017-11-16 14:20:48   notice : Loaded module qc_sqlite: V1.0.0 from /usr/lib64/maxscale/libqc_sqlite.so

2017-11-16 14:20:48   notice : Using encrypted passwords. Encryption key: '/var/lib/maxscale/.secrets'.

2017-11-16 14:20:48   notice : Loaded module MySQLClient: V1.1.0 from /usr/lib64/maxscale/libMySQLClient.so

2017-11-16 14:20:49   notice : Server changed state: prod_mariadb01[192.168.50.11:3306]: new_master. [Running] -> [Master, Running]

2017-11-16 14:20:49   notice : Server changed state: prod_mariadb02[192.168.50.12:3306]: new_slave. [Running] -> [Slave, Running]

2017-11-16 14:20:49   notice : Server changed state: prod_mariadb03[192.168.50.13:3306]: new_slave. [Running] -> [Slave, Running]

2017-11-16 14:20:49   notice : [mysqlmon] A Master Server is now available: 192.168.50.11:3306

2017-11-16 14:22:04   notice : [MySQLAuth] [rwsplit-service] Loaded 11 MySQL users for listener rwsplit-listener.

2017-11-16 14:22:04   notice : Listening for connections at [0.0.0.0]:4006 with protocol MySQL

2017-11-16 14:22:04   notice : Listening for connections at [/tmp/maxadmin.sock]:0 with protocol MaxScale Admin

2017-11-16 14:22:04   notice : MaxScale started with 1 server threads.

2017-11-16 14:22:04   notice : Started MaxScale log flusher.

So, let's connect the app:

[root@maxscale maxscale.cnf.d]# ifconfig

enp0s8: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500

        inet 192.168.50.100  netmask 255.255.255.0  broadcast 192.168.50.255

        inet6 fe80::a00:27ff:fe84:e9bd  prefixlen 64  scopeid 0x20<link>

        ether 08:00:27:84:e9:bd  txqueuelen 1000  (Ethernet)

        RX packets 206354  bytes 120898385 (115.2 MiB)

        RX errors 0  dropped 0  overruns 0  frame 0

        TX packets 264015  bytes 27325211 (26.0 MiB)

        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

[root@maxscale maxscale.cnf.d]# mysql -u wb -p123 -h 192.168.50.100 -P 4006 -e "select @@hostname"

+------------+

| @@hostname |

+------------+

| box02      |

+------------+

[root@maxscale maxscale.cnf.d]# maxadmin list servers

Servers.

-------------------+-----------------+-------+-------------+--------------------

Server             | Address         | Port  | Connections | Status

-------------------+-----------------+-------+-------------+--------------------

prod_mariadb01     | 192.168.50.11   |  3306 |           0 | Master, Running

prod_mariadb02     | 192.168.50.12   |  3306 |           0 | Slave, Running <<< box02

prod_mariadb03     | 192.168.50.13   |  3306 |           0 | Slave, Running

-------------------+-----------------+-------+-------------+--------------------

All seems to be good and logs cleaned, but, why did the db got corrupted? Is this something we can do internally the Maxscale to make sure db used for cache can be recycled in case it's presenting malformed problems?

Wagner Bianchi (Inactive) added a comment - 2017-11-16 14:34 - edited Folks, What I did, I removed the underlying sqllite databases used for cache users: /var/cache/maxscale/router_readwritesplit/listener_readwritesplit/cache/dbusers.db /var/cache/maxscale/readwritesplit_router/readwritesplit_listener/cache/dbusers.db And then tested two different situations, one with authenticator_options=inject_service_user=false and the other one removing that variable/configuration for the listener, as the default value will be true, enabled by default. Below the log output: #: authenticator_options=inject_service_user= false MariaDB MaxScale /var/log/maxscale/maxscale.log Thu Nov 16 14 : 17 : 43 2017 ---------------------------------------------------------------------------- ^ @2017 - 11 - 16 14 : 17 : 43 notice : Working directory: /var/log/maxscale 2017 - 11 - 16 14 : 17 : 43 notice : MariaDB MaxScale 2.1 . 10 started 2017 - 11 - 16 14 : 17 : 43 notice : MaxScale is running in process 4429 2017 - 11 - 16 14 : 17 : 43 notice : Configuration file: /root/maxscale_configs/basic.cnf 2017 - 11 - 16 14 : 17 : 43 notice : Log directory: /var/log/maxscale 2017 - 11 - 16 14 : 17 : 43 notice : Data directory: /var/lib/maxscale 2017 - 11 - 16 14 : 17 : 43 notice : Module directory: /usr/lib64/maxscale 2017 - 11 - 16 14 : 17 : 43 notice : Service cache: /var/cache/maxscale 2017 - 11 - 16 14 : 17 : 43 notice : Loading /root/maxscale_configs/basic.cnf. 2017 - 11 - 16 14 : 17 : 43 notice : /root/maxscale_configs/basic.cnf.d does not exist, not reading. 2017 - 11 - 16 14 : 17 : 43 notice : Loading generated configuration files from '/var/lib/maxscale/maxscale.cnf.d' 2017 - 11 - 16 14 : 17 : 43 notice : Loading /var/lib/maxscale/maxscale.cnf.d/cluster-monitor.cnf. 2017 - 11 - 16 14 : 17 : 43 notice : Loading /var/lib/maxscale/maxscale.cnf.d/prod_mariadb01.cnf. 2017 - 11 - 16 14 : 17 : 43 notice : Loading /var/lib/maxscale/maxscale.cnf.d/prod_mariadb02.cnf. 2017 - 11 - 16 14 : 17 : 43 notice : Loading /var/lib/maxscale/maxscale.cnf.d/prod_mariadb03.cnf. 2017 - 11 - 16 14 : 17 : 43 notice : Loading /var/lib/maxscale/maxscale.cnf.d/rwsplit-service.cnf. 2017 - 11 - 16 14 : 17 : 43 notice : Loading /var/lib/maxscale/maxscale.cnf.d/rwsplit-listener.cnf. 2017 - 11 - 16 14 : 17 : 43 notice : [mysqlmon] Initialise the MySQL Monitor module. 2017 - 11 - 16 14 : 17 : 43 notice : Loaded module mysqlmon: V1. 5.0 from /usr/lib64/maxscale/libmysqlmon.so 2017 - 11 - 16 14 : 17 : 43 notice : [cli] Initialise CLI router module 2017 - 11 - 16 14 : 17 : 43 notice : Loaded module cli: V1. 0.0 from /usr/lib64/maxscale/libcli.so 2017 - 11 - 16 14 : 17 : 43 notice : [readwritesplit] Initializing statement-based read/write split router module. 2017 - 11 - 16 14 : 17 : 43 notice : Loaded module readwritesplit: V1. 1.0 from /usr/lib64/maxscale/libreadwritesplit.so 2017 - 11 - 16 14 : 17 : 43 notice : Loaded module MySQLBackendAuth: V1. 0.0 from /usr/lib64/maxscale/libMySQLBackendAuth.so 2017 - 11 - 16 14 : 17 : 43 notice : Loaded module MySQLAuth: V1. 1.0 from /usr/lib64/maxscale/libMySQLAuth.so 2017 - 11 - 16 14 : 17 : 43 notice : Loaded module maxscaled: V2. 0.0 from /usr/lib64/maxscale/libmaxscaled.so 2017 - 11 - 16 14 : 17 : 43 notice : Loaded module MaxAdminAuth: V2. 1.0 from /usr/lib64/maxscale/libMaxAdminAuth.so 2017 - 11 - 16 14 : 17 : 43 notice : No query classifier specified, using default 'qc_sqlite' . 2017 - 11 - 16 14 : 17 : 43 notice : Loaded module qc_sqlite: V1. 0.0 from /usr/lib64/maxscale/libqc_sqlite.so 2017 - 11 - 16 14 : 17 : 43 notice : Using encrypted passwords. Encryption key: '/var/lib/maxscale/.secrets' . 2017 - 11 - 16 14 : 17 : 43 notice : Loaded module MySQLClient: V1. 1.0 from /usr/lib64/maxscale/libMySQLClient.so 2017 - 11 - 16 14 : 17 : 43 notice : Server changed state: prod_mariadb01[ 192.168 . 50.11 : 3306 ]: new_master. [Running] -> [Master, Running] 2017 - 11 - 16 14 : 17 : 43 notice : Server changed state: prod_mariadb02[ 192.168 . 50.12 : 3306 ]: new_slave. [Running] -> [Slave, Running] 2017 - 11 - 16 14 : 17 : 43 notice : Server changed state: prod_mariadb03[ 192.168 . 50.13 : 3306 ]: new_slave. [Running] -> [Slave, Running] 2017 - 11 - 16 14 : 17 : 43 notice : [mysqlmon] A Master Server is now available: 192.168 . 50.11 : 3306 2017 - 11 - 16 14 : 18 : 45 notice : [MySQLAuth] [rwsplit-service] Loaded 11 MySQL users for listener rwsplit-listener. 2017 - 11 - 16 14 : 18 : 45 notice : Listening for connections at [ 0.0 . 0.0 ]: 4006 with protocol MySQL 2017 - 11 - 16 14 : 18 : 45 notice : Listening for connections at [/tmp/maxadmin.sock]: 0 with protocol MaxScale Admin 2017 - 11 - 16 14 : 18 : 45 notice : MaxScale started with 1 server threads. 2017 - 11 - 16 14 : 18 : 45 notice : Started MaxScale log flusher. ^ @2017 - 11 - 16 14 : 19 : 11 notice : Waiting for housekeeper to shut down. 2017 - 11 - 16 14 : 19 : 12 notice : Finished MaxScale log flusher. 2017 - 11 - 16 14 : 19 : 12 notice : Housekeeper shutting down. 2017 - 11 - 16 14 : 19 : 12 notice : Housekeeper has shut down. 2017 - 11 - 16 14 : 19 : 12 notice : MaxScale received signal SIGTERM. Exiting. 2017 - 11 - 16 14 : 19 : 12 notice : MaxScale is shutting down. 2017 - 11 - 16 14 : 19 : 12 notice : MaxScale shutdown completed. 2017 - 11 - 16 14 : 19 : 12 MariaDB MaxScale is shut down. ---------------------------------------------------- and then, #: without inject_service_user MariaDB MaxScale /var/log/maxscale/maxscale.log Thu Nov 16 14 : 20 : 48 2017 ---------------------------------------------------------------------------- ^@^ @2017 - 11 - 16 14 : 20 : 48 notice : Working directory: /var/log/maxscale 2017 - 11 - 16 14 : 20 : 48 notice : MariaDB MaxScale 2.1 . 10 started 2017 - 11 - 16 14 : 20 : 48 notice : MaxScale is running in process 4438 2017 - 11 - 16 14 : 20 : 48 notice : Configuration file: /root/maxscale_configs/basic.cnf 2017 - 11 - 16 14 : 20 : 48 notice : Log directory: /var/log/maxscale 2017 - 11 - 16 14 : 20 : 48 notice : Data directory: /var/lib/maxscale 2017 - 11 - 16 14 : 20 : 48 notice : Module directory: /usr/lib64/maxscale 2017 - 11 - 16 14 : 20 : 48 notice : Service cache: /var/cache/maxscale 2017 - 11 - 16 14 : 20 : 48 notice : Loading /root/maxscale_configs/basic.cnf. 2017 - 11 - 16 14 : 20 : 48 notice : /root/maxscale_configs/basic.cnf.d does not exist, not reading. 2017 - 11 - 16 14 : 20 : 48 notice : Loading generated configuration files from '/var/lib/maxscale/maxscale.cnf.d' 2017 - 11 - 16 14 : 20 : 48 notice : Loading /var/lib/maxscale/maxscale.cnf.d/cluster-monitor.cnf. 2017 - 11 - 16 14 : 20 : 48 notice : Loading /var/lib/maxscale/maxscale.cnf.d/prod_mariadb01.cnf. 2017 - 11 - 16 14 : 20 : 48 notice : Loading /var/lib/maxscale/maxscale.cnf.d/prod_mariadb02.cnf. 2017 - 11 - 16 14 : 20 : 48 notice : Loading /var/lib/maxscale/maxscale.cnf.d/prod_mariadb03.cnf. 2017 - 11 - 16 14 : 20 : 48 notice : Loading /var/lib/maxscale/maxscale.cnf.d/rwsplit-service.cnf. 2017 - 11 - 16 14 : 20 : 48 notice : Loading /var/lib/maxscale/maxscale.cnf.d/rwsplit-listener.cnf. 2017 - 11 - 16 14 : 20 : 48 notice : [mysqlmon] Initialise the MySQL Monitor module. 2017 - 11 - 16 14 : 20 : 48 notice : Loaded module mysqlmon: V1. 5.0 from /usr/lib64/maxscale/libmysqlmon.so 2017 - 11 - 16 14 : 20 : 48 notice : [cli] Initialise CLI router module 2017 - 11 - 16 14 : 20 : 48 notice : Loaded module cli: V1. 0.0 from /usr/lib64/maxscale/libcli.so 2017 - 11 - 16 14 : 20 : 48 notice : [readwritesplit] Initializing statement-based read/write split router module. 2017 - 11 - 16 14 : 20 : 48 notice : Loaded module readwritesplit: V1. 1.0 from /usr/lib64/maxscale/libreadwritesplit.so 2017 - 11 - 16 14 : 20 : 48 notice : Loaded module MySQLBackendAuth: V1. 0.0 from /usr/lib64/maxscale/libMySQLBackendAuth.so 2017 - 11 - 16 14 : 20 : 48 notice : Loaded module MySQLAuth: V1. 1.0 from /usr/lib64/maxscale/libMySQLAuth.so 2017 - 11 - 16 14 : 20 : 48 notice : Loaded module maxscaled: V2. 0.0 from /usr/lib64/maxscale/libmaxscaled.so 2017 - 11 - 16 14 : 20 : 48 notice : Loaded module MaxAdminAuth: V2. 1.0 from /usr/lib64/maxscale/libMaxAdminAuth.so 2017 - 11 - 16 14 : 20 : 48 notice : No query classifier specified, using default 'qc_sqlite' . 2017 - 11 - 16 14 : 20 : 48 notice : Loaded module qc_sqlite: V1. 0.0 from /usr/lib64/maxscale/libqc_sqlite.so 2017 - 11 - 16 14 : 20 : 48 notice : Using encrypted passwords. Encryption key: '/var/lib/maxscale/.secrets' . 2017 - 11 - 16 14 : 20 : 48 notice : Loaded module MySQLClient: V1. 1.0 from /usr/lib64/maxscale/libMySQLClient.so 2017 - 11 - 16 14 : 20 : 49 notice : Server changed state: prod_mariadb01[ 192.168 . 50.11 : 3306 ]: new_master. [Running] -> [Master, Running] 2017 - 11 - 16 14 : 20 : 49 notice : Server changed state: prod_mariadb02[ 192.168 . 50.12 : 3306 ]: new_slave. [Running] -> [Slave, Running] 2017 - 11 - 16 14 : 20 : 49 notice : Server changed state: prod_mariadb03[ 192.168 . 50.13 : 3306 ]: new_slave. [Running] -> [Slave, Running] 2017 - 11 - 16 14 : 20 : 49 notice : [mysqlmon] A Master Server is now available: 192.168 . 50.11 : 3306 2017 - 11 - 16 14 : 22 : 04 notice : [MySQLAuth] [rwsplit-service] Loaded 11 MySQL users for listener rwsplit-listener. 2017 - 11 - 16 14 : 22 : 04 notice : Listening for connections at [ 0.0 . 0.0 ]: 4006 with protocol MySQL 2017 - 11 - 16 14 : 22 : 04 notice : Listening for connections at [/tmp/maxadmin.sock]: 0 with protocol MaxScale Admin 2017 - 11 - 16 14 : 22 : 04 notice : MaxScale started with 1 server threads. 2017 - 11 - 16 14 : 22 : 04 notice : Started MaxScale log flusher. So, let's connect the app: [root @maxscale maxscale.cnf.d]# ifconfig enp0s8: flags= 4163 <UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 192.168 . 50.100 netmask 255.255 . 255.0 broadcast 192.168 . 50.255 inet6 fe80::a00:27ff:fe84:e9bd prefixlen 64 scopeid 0x20 <link> ether 08 : 00 : 27 : 84 :e9:bd txqueuelen 1000 (Ethernet) RX packets 206354 bytes 120898385 ( 115.2 MiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 264015 bytes 27325211 ( 26.0 MiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 [root @maxscale maxscale.cnf.d]# mysql -u wb -p123 -h 192.168 . 50.100 -P 4006 -e "select @@hostname" +------------+ | @ @hostname | +------------+ | box02 | +------------+ [root @maxscale maxscale.cnf.d]# maxadmin list servers Servers. -------------------+-----------------+-------+-------------+-------------------- Server | Address | Port | Connections | Status -------------------+-----------------+-------+-------------+-------------------- prod_mariadb01 | 192.168 . 50.11 | 3306 | 0 | Master, Running prod_mariadb02 | 192.168 . 50.12 | 3306 | 0 | Slave, Running <<< box02 prod_mariadb03 | 192.168 . 50.13 | 3306 | 0 | Slave, Running -------------------+-----------------+-------+-------------+-------------------- All seems to be good and logs cleaned, but, why did the db got corrupted? Is this something we can do internally the Maxscale to make sure db used for cache can be recycled in case it's presenting malformed problems?

Wagner Bianchi (Inactive) added a comment - 2017-11-16 13:58

Folks,

Another issue I found is that, if I disable the inject_server_user in an attempt to disable that option and don't have that feature on my Maxscale instance, as stated at https://mariadb.com/kb/en/mariadb-enterprise/mariadb-maxscale-21-mysql-authenticator/, I got this below:

2017-11-16 13:52:18   error  : [MySQLAuth] Failed to delete old users: database disk image is malformed

2017-11-16 13:52:18   notice : Server changed state: prod_mariadb01[192.168.50.11:3306]: new_master. [Running] -> [Master, Running]

2017-11-16 13:52:18   notice : Server changed state: prod_mariadb02[192.168.50.12:3306]: new_slave. [Running] -> [Slave, Running]

2017-11-16 13:52:18   notice : Server changed state: prod_mariadb03[192.168.50.13:3306]: new_slave. [Running] -> [Slave, Running]

2017-11-16 13:52:18   notice : [mysqlmon] A Master Server is now available: 192.168.50.11:3306

2017-11-16 13:52:18   error  : [MySQLAuth] Failed to insert database: database disk image is malformed

2017-11-16 13:52:18   error  : [MySQLAuth] Failed to insert database: database disk image is malformed

2017-11-16 13:52:18   error  : [MySQLAuth] Failed to insert database: database disk image is malformed

2017-11-16 13:52:18   error  : [MySQLAuth] Failed to insert database: database disk image is malformed

2017-11-16 13:52:18   error  : [MySQLAuth] Failed to insert database: database disk image is malformed

2017-11-16 13:52:18   error  : [MySQLAuth] Failed to insert database: database disk image is malformed

2017-11-16 13:52:18   error  : [MySQLAuth] Failed to insert database: database disk image is malformed

2017-11-16 13:52:18   error  : [MySQLAuth] Failed to insert database: database disk image is malformed

2017-11-16 13:52:18   error  : [MySQLAuth] Failed to insert database: database disk image is malformed

2017-11-16 13:52:18   error  : [MySQLAuth] Failed to insert database: database disk image is malformed (subsequent similar messages suppressed for 10000 milliseconds)

Another issue is that, as I'm using dynamic configurations, I need to edit the service listener file created at /var/lib/maxscale/maxscale.cnf.d which in this case is rwsplit-listener.cnf and add the authenticator_options=inject_service_user=false.

[root@maxscale maxscale.cnf.d]# cat rwsplit-listener.cnf

[rwsplit-listener]

type=listener

protocol=MySQLClient

service=rwsplit-service

address=0.0.0.0

port=4006

authenticator=MySQLAuth

authenticator_options=inject_service_user=false

But why I think this is a problem, maybe we need a way to pass this as a parameter when creating the listener?

Thanks again, cheers.

Wagner Bianchi (Inactive) added a comment - 2017-11-16 13:58 Folks, Another issue I found is that, if I disable the inject_server_user in an attempt to disable that option and don't have that feature on my Maxscale instance, as stated at https://mariadb.com/kb/en/mariadb-enterprise/mariadb-maxscale-21-mysql-authenticator/ , I got this below: 2017 - 11 - 16 13 : 52 : 18 error : [MySQLAuth] Failed to delete old users: database disk image is malformed 2017 - 11 - 16 13 : 52 : 18 notice : Server changed state: prod_mariadb01[ 192.168 . 50.11 : 3306 ]: new_master. [Running] -> [Master, Running] 2017 - 11 - 16 13 : 52 : 18 notice : Server changed state: prod_mariadb02[ 192.168 . 50.12 : 3306 ]: new_slave. [Running] -> [Slave, Running] 2017 - 11 - 16 13 : 52 : 18 notice : Server changed state: prod_mariadb03[ 192.168 . 50.13 : 3306 ]: new_slave. [Running] -> [Slave, Running] 2017 - 11 - 16 13 : 52 : 18 notice : [mysqlmon] A Master Server is now available: 192.168 . 50.11 : 3306 2017 - 11 - 16 13 : 52 : 18 error : [MySQLAuth] Failed to insert database: database disk image is malformed 2017 - 11 - 16 13 : 52 : 18 error : [MySQLAuth] Failed to insert database: database disk image is malformed 2017 - 11 - 16 13 : 52 : 18 error : [MySQLAuth] Failed to insert database: database disk image is malformed 2017 - 11 - 16 13 : 52 : 18 error : [MySQLAuth] Failed to insert database: database disk image is malformed 2017 - 11 - 16 13 : 52 : 18 error : [MySQLAuth] Failed to insert database: database disk image is malformed 2017 - 11 - 16 13 : 52 : 18 error : [MySQLAuth] Failed to insert database: database disk image is malformed 2017 - 11 - 16 13 : 52 : 18 error : [MySQLAuth] Failed to insert database: database disk image is malformed 2017 - 11 - 16 13 : 52 : 18 error : [MySQLAuth] Failed to insert database: database disk image is malformed 2017 - 11 - 16 13 : 52 : 18 error : [MySQLAuth] Failed to insert database: database disk image is malformed 2017 - 11 - 16 13 : 52 : 18 error : [MySQLAuth] Failed to insert database: database disk image is malformed (subsequent similar messages suppressed for 10000 milliseconds) Another issue is that, as I'm using dynamic configurations, I need to edit the service listener file created at /var/lib/maxscale/maxscale.cnf.d which in this case is rwsplit-listener.cnf and add the authenticator_options=inject_service_user=false . [root @maxscale maxscale.cnf.d]# cat rwsplit-listener.cnf [rwsplit-listener] type=listener protocol=MySQLClient service=rwsplit-service address= 0.0 . 0.0 port= 4006 authenticator=MySQLAuth authenticator_options=inject_service_user= false But why I think this is a problem, maybe we need a way to pass this as a parameter when creating the listener? Thanks again, cheers.

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