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Installare le dipendenze di MetroCluster tiebreaker 1,4

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A seconda del sistema operativo Linux host, installare un server MySQL o MariaDB prima di installare o aggiornare il software tiebreaker.

Fasi
  1. Installare JDK.

  2. Installare il server MySQL o MariaDB:

    Se l'host Linux è

    Quindi…​

    Red Hat Enterprise Linux 7/CentOS 7

    Red Hat Enterprise Linux 8

Installare JDK

È necessario installare JDK sul sistema host prima di installare o aggiornare il software tiebreaker. Tiebreaker 1,4 e versioni precedenti supporta JDK 1,8.0. (JRE 8).

Fasi
  1. Accedere come utente "root".

    login as: root
    root@mcctb's password:
    Last login: Fri Jan  8 21:33:00 2017 from host.domain.com
  2. Installare JDK 1,8.0:

    yum install java-1.8.0-openjdk.x86_64

    [root@mcctb ~]# yum install java-1.8.0-openjdk.x86_64
    Loaded plugins: fastestmirror, langpacks
    Loading mirror speeds from cached hostfile
    ... shortened....
    Dependencies Resolved
    
    =======================================================================
    Package               Arch   Version                 Repository    Size
    =======================================================================
    Installing:
     java-1.8.0-openjdk  x86_64  1:1.8.0.144-0.b01.el7_4 updates      238 k
     ..
     ..
    Transaction Summary
    =======================================================================
    Install  1 Package  (+ 4 Dependent packages)
    
    Total download size: 34 M
    Is this ok [y/d/N]: y
    
    Installed:
    java-1.8.0-openjdk.x86_64 1:1.8.0.144-0.b01.el7_4
    Complete!

Installare MySQL Server 5.5.30 o versioni successive e 5,6.x su Red Hat Enterprise Linux 7 o CentOS 7

È necessario installare MySQL Server 5.5.30 o versione successiva e la versione 5.6.x sul sistema host prima di installare o aggiornare il software Tiebreaker. Per Red Hat Enterprise Linux 8, Installare il server MariaDB.

Fasi
  1. Accedere come utente root.

    login as: root
    root@mcctb's password:
    Last login: Fri Jan  8 21:33:00 2016 from host.domain.com
  2. Aggiungi il repository MySQL al tuo sistema host:

    [root@mcctb ~]# yum localinstall https://dev.mysql.com/get/mysql57-community-release-el6-11.noarch.rpm

    Loaded plugins: product-id, refresh-packagekit, security, subscription-manager
    Setting up Local Package Process
    Examining /var/tmp/yum-root-LLUw0r/mysql-community-release-el6-5.noarch.rpm: mysql-community-release-el6-5.noarch
    Marking /var/tmp/yum-root-LLUw0r/mysql-community-release-el6-5.noarch.rpm to be installed
    Resolving Dependencies
    --> Running transaction check
    ---> Package mysql-community-release.noarch 0:el6-5 will be installed
    --> Finished Dependency Resolution
    Dependencies Resolved
    ================================================================================
    Package               Arch   Version
                                        Repository                             Size
    ================================================================================
    Installing:
    mysql-community-release
                           noarch el6-5 /mysql-community-release-el6-5.noarch 4.3 k
    Transaction Summary
    ================================================================================
    Install       1 Package(s)
    Total size: 4.3 k
    Installed size: 4.3 k
    Is this ok [y/N]: y
    Downloading Packages:
    Running rpm_check_debug
    Running Transaction Test
    Transaction Test Succeeded
    Running Transaction
      Installing : mysql-community-release-el6-5.noarch                         1/1
      Verifying  : mysql-community-release-el6-5.noarch                         1/1
    Installed:
      mysql-community-release.noarch 0:el6-5
    Complete!
  3. Disattivare il repository MySQL 57:

    [root@mcctb ~]# yum-config-manager --disable mysql57-community

  4. Abilitare il repository MySQL 56:

    [root@mcctb ~]# yum-config-manager --enable mysql56-community

  5. Abilitare il repository:

    [root@mcctb ~]# yum repolist enabled | grep "mysql.-community."

    mysql-connectors-community           MySQL Connectors Community            21
    mysql-tools-community                MySQL Tools Community                 35
    mysql56-community                    MySQL 5.6 Community Server           231
  6. Installare il server della community MySQL:

    [root@mcctb ~]# yum install mysql-community-server

    Loaded plugins: product-id, refresh-packagekit, security, subscription-manager
    This system is not registered to Red Hat Subscription Management. You can use subscription-manager
    to register.
    Setting up Install Process
    Resolving Dependencies
    --> Running transaction check
     .....Output truncated.....
    ---> Package mysql-community-libs-compat.x86_64 0:5.6.29-2.el6 will be obsoleting
    --> Finished Dependency Resolution
    Dependencies Resolved
    ==============================================================================
    Package                          Arch   Version       Repository          Size
    ==============================================================================
    Installing:
     mysql-community-client         x86_64  5.6.29-2.el6  mysql56-community  18  M
         replacing  mysql.x86_64 5.1.71-1.el6
     mysql-community-libs           x86_64  5.6.29-2.el6  mysql56-community  1.9 M
         replacing  mysql-libs.x86_64 5.1.71-1.el6
     mysql-community-libs-compat    x86_64  5.6.29-2.el6  mysql56-community  1.6 M
         replacing  mysql-libs.x86_64 5.1.71-1.el6
     mysql-community-server         x86_64  5.6.29-2.el6  mysql56-community  53  M
         replacing  mysql-server.x86_64 5.1.71-1.el6
    Installing for dependencies:
    mysql-community-common          x86_64  5.6.29-2.el6  mysql56-community   308 k
    
    Transaction Summary
    ===============================================================================
    Install       5 Package(s)
    Total download size: 74 M
    Is this ok [y/N]: y
    Downloading Packages:
    (1/5): mysql-community-client-5.6.29-2.el6.x86_64.rpm       |  18 MB     00:28
    (2/5): mysql-community-common-5.6.29-2.el6.x86_64.rpm       | 308 kB     00:01
    (3/5): mysql-community-libs-5.6.29-2.el6.x86_64.rpm         | 1.9 MB     00:05
    (4/5): mysql-community-libs-compat-5.6.29-2.el6.x86_64.rpm  | 1.6 MB     00:05
    (5/5): mysql-community-server-5.6.29-2.el6.x86_64.rpm       |  53 MB     03:42
     -------------------------------------------------------------------------------
    Total                                              289 kB/s |  74 MB     04:24
    warning: rpmts_HdrFromFdno: Header V3 DSA/SHA1 Signature, key ID <key_id> NOKEY
    Retrieving key from file:/etc/pki/rpm-gpg/RPM-GPG-KEY-mysql
    Importing GPG key 0x5072E1F5:
     Userid : MySQL Release Engineering <mysql-build@oss.oracle.com>
    Package: mysql-community-release-el6-5.noarch
             (@/mysql-community-release-el6-5.noarch)
     From   : file:/etc/pki/rpm-gpg/RPM-GPG-KEY-mysql
    Is this ok [y/N]: y
    Running rpm_check_debug
    Running Transaction Test
    Transaction Test Succeeded
    Running Transaction
      Installing : mysql-community-common-5.6.29-2.el6.x86_64
    ....Output truncated....
    1.el6.x86_64                                                               7/8
      Verifying  : mysql-5.1.71-1.el6.x86_64                       	           8/8
    Installed:
      mysql-community-client.x86_64 0:5.6.29-2.el6
      mysql-community-libs.x86_64 0:5.6.29-2.el6
      mysql-community-libs-compat.x86_64 0:5.6.29-2.el6
      mysql-community-server.x86_64 0:5.6.29-2.el6
    
    Dependency Installed:
      mysql-community-common.x86_64 0:5.6.29-2.el6
    
    Replaced:
      mysql.x86_64 0:5.1.71-1.el6 mysql-libs.x86_64 0:5.1.71-1.el6
      mysql-server.x86_64 0:5.1.71-1.el6
    Complete!
  7. Avviare il server MySQL:

    [root@mcctb ~]# service mysqld start

    Initializing MySQL database:  2016-04-05 19:44:38 0 [Warning] TIMESTAMP
    with implicit DEFAULT value is deprecated. Please use
    --explicit_defaults_for_timestamp server option (see documentation
    for more details).
    2016-04-05 19:44:38 0 [Note] /usr/sbin/mysqld (mysqld 5.6.29)
            starting as process 2487 ...
    2016-04-05 19:44:38 2487 [Note] InnoDB: Using atomics to ref count
            buffer pool pages
    2016-04-05 19:44:38 2487 [Note] InnoDB: The InnoDB memory heap is disabled
    ....Output truncated....
    2016-04-05 19:44:42 2509 [Note] InnoDB: Shutdown completed; log sequence
           number 1625987
    
    PLEASE REMEMBER TO SET A PASSWORD FOR THE MySQL root USER!
    To do so, start the server, then issue the following commands:
    
      /usr/bin/mysqladmin -u root password 'new-password'
      /usr/bin/mysqladmin -u root -h mcctb password 'new-password'
    
    Alternatively, you can run:
      /usr/bin/mysql_secure_installation
    
    which will also give you the option of removing the test
    databases and anonymous user created by default.  This is
    strongly recommended for production servers.
    .....Output truncated.....
    WARNING: Default config file /etc/my.cnf exists on the system
    This file will be read by default by the MySQL server
    If you do not want to use this, either remove it, or use the
    --defaults-file argument to mysqld_safe when starting the server
    
                                                               [  OK  ]
    Starting mysqld:                                           [  OK  ]
  8. Verificare che MySQL Server sia in esecuzione:

    [root@mcctb ~]# service mysqld status

    mysqld (pid  2739) is running...
  9. Configurare le impostazioni di sicurezza e password:

    [root@mcctb ~]# mysql_secure_installation

    NOTE: RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MySQL
           SERVERS IN PRODUCTION USE!  PLEASE READ EACH STEP CAREFULLY!
    
     In order to log into MySQL to secure it, we'll need the current
     password for the root user.  If you've just installed MySQL, and
     you haven't set the root password yet, the password will be blank,
     so you should just press enter here.
    
     Enter current password for root (enter for none):   <== on default install
                                                             hit enter here
     OK, successfully used password, moving on...
    
     Setting the root password ensures that nobody can log into the MySQL
     root user without the proper authorization.
    
     Set root password? [Y/n] y
     New password:
     Re-enter new password:
     Password updated successfully!
     Reloading privilege tables..
      ... Success!
    
     By default, a MySQL installation has an anonymous user, allowing anyone
     to log into MySQL without having to have a user account created for
     them.  This is intended only for testing, and to make the installation
     go a bit smoother.  You should remove them before moving into a
     production environment.
    
     Remove anonymous users? [Y/n] y
      ... Success!
    
     Normally, root should only be allowed to connect from 'localhost'.  This
     ensures that someone cannot guess at the root password from the network.
    
     Disallow root login remotely? [Y/n] y
      ... Success!
    
     By default, MySQL comes with a database named 'test' that anyone can
     access.  This is also intended only for testing, and should be removed
     before moving into a production environment.
    
     Remove test database and access to it? [Y/n] y
      - Dropping test database...
     ERROR 1008 (HY000) at line 1: Can't drop database 'test';
     database doesn't exist
      ... Failed!  Not critical, keep moving...
      - Removing privileges on test database...
      ... Success!
    
     Reloading the privilege tables will ensure that all changes made so far
     will take effect immediately.
    
     Reload privilege tables now? [Y/n] y
      ... Success!
    
     All done!  If you've completed all of the above steps, your MySQL
     installation should now be secure.
    
     Thanks for using MySQL!
    
     Cleaning up...
  10. Verificare che l'accesso MySQL funzioni:

    [root@mcctb ~]# mysql -u root –p

    Enter password: <configured_password>
    Welcome to the MySQL monitor.  Commands end with ; or \g.
    Your MySQL connection id is 17
    Server version: 5.6.29 MySQL Community Server (GPL)
    
    Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.
    
    Oracle is a registered trademark of Oracle Corporation and/or its
    affiliates. Other names may be trademarks of their respective
    owners.
    
    Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
    mysql>

    Quando il login MySQL funziona come previsto, l'output termina al mysql> prompt.

Abilitare l'impostazione di avvio automatico di MySQL

Verificare che la funzionalità di autostart sia attivata per il daemon MySQL. L'attivazione del daemon MySQL riavvia automaticamente MySQL se il sistema su cui risiede il software MetroCluster Tiebreaker si riavvia. Se il daemon MySQL non è in esecuzione, il software Tiebreaker continua a funzionare, ma non può essere riavviato e non è possibile apportare modifiche alla configurazione.

Fase
  1. Verificare che MySQL sia abilitato all'avvio automatico all'avvio:

    [root@mcctb ~]# systemctl list-unit-files mysqld.service

    UNIT FILE          State
    ------------------ ----------
    mysqld.service     enabled

    Se MySQL non è abilitato all'avvio automatico all'avvio, consultare la documentazione di MySQL per abilitare la funzione di avvio automatico per l'installazione.

Installare il server MariaDB su Red Hat Enterprise Linux 8

È necessario installare il server MariaDB sul sistema host prima di installare o aggiornare il software Tiebreaker. Per Red Hat Enterprise Linux 7 o CentOS 7, Installare MySQL Server.

Prima di iniziare

Il sistema host deve essere in esecuzione su Red Hat Enterprise Linux (RHEL) 8.

Fasi
  1. Accedere come a. root utente.

    login as: root
    root@mcctb's password:
    Last login: Fri Jan  8 21:33:00 2017 from host.domain.com
  2. Installare il server MariaDB:

    [root@mcctb ~]# yum install mariadb-server.x86_64

    [root@mcctb ~]# yum install mariadb-server.x86_64
    Loaded plugins: fastestmirror, langpacks
     ...
     ...
    
    ===========================================================================
     Package                      Arch   Version         Repository        Size
    ===========================================================================
    Installing:
    mariadb-server               x86_64   1:5.5.56-2.el7   base            11 M
    Installing for dependencies:
    
    Transaction Summary
    ===========================================================================
    Install  1 Package  (+8 Dependent packages)
    Upgrade             ( 1 Dependent package)
    
    Total download size: 22 M
    Is this ok [y/d/N]: y
    
    Downloading packages:
    No Presto metadata available for base warning:
    /var/cache/yum/x86_64/7/base/packages/mariadb-libs-5.5.56-2.el7.x86_64.rpm:
    Header V3 RSA/SHA256 Signature,
    key ID f4a80eb5: NOKEY] 1.4 MB/s | 3.3 MB  00:00:13 ETA
    Public key for mariadb-libs-5.5.56-2.el7.x86_64.rpm is not installed
    (1/10): mariadb-libs-5.5.56-2.el7.x86_64.rpm  | 757 kB  00:00:01
    ..
    ..
    (10/10): perl-Net-Daemon-0.48-5.el7.noarch.rpm|  51 kB  00:00:01
    -----------------------------------------------------------------------------------------
    Installed:
      mariadb-server.x86_64 1:5.5.56-2.el7
    
    Dependency Installed:
    mariadb.x86_64 1:5.5.56-2.el7
    perl-Compress-Raw-Bzip2.x86_64 0:2.061-3.el7
    perl-Compress-Raw-Zlib.x86_64 1:2.061-4.el7
    perl-DBD-MySQL.x86_64 0:4.023-5.el7
    perl-DBI.x86_64 0:1.627-4.el7
    perl-IO-Compress.noarch 0:2.061-2.el7
    perl-Net-Daemon.noarch 0:0.48-5.el7
    perl-PlRPC.noarch 0:0.2020-14.el7
    
    Dependency Updated:
      mariadb-libs.x86_64 1:5.5.56-2.el7
    Complete!
  3. Avviare il server MariaDB:

    [root@mcctb ~]# systemctl start mariadb

  4. Verificare che il server MariaDB sia stato avviato:

    [root@mcctb ~]# systemctl status mariadb

    [root@mcctb ~]# systemctl status mariadb
    mariadb.service - MariaDB database server
    ...
    Nov 08 21:28:59 mcctb systemd[1]: Starting MariaDB database server...
    ...
    Nov 08 21:29:01 mcctb systemd[1]: Started MariaDB database server.
  5. Configurare le impostazioni di sicurezza e password:

    Nota Quando viene richiesta la password di root, lasciarla vuota e premere Invio per continuare a configurare le impostazioni di sicurezza e password.

    [root@mcctb ~]# mysql_secure_installation

    root@localhost systemd]# mysql_secure_installation
    
     NOTE: RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MariaDB
          SERVERS IN PRODUCTION USE!  PLEASE READ EACH STEP CAREFULLY!
    
    In order to log into MariaDB to secure it, we'll need the current
    password for the root user.  If you've just installed MariaDB, and
    you haven't set the root password yet, the password will be blank,
    so you should just press enter here.
    
    Enter current password for root (enter for none):
    OK, successfully used password, moving on...
    
    Setting the root password ensures that nobody can log into the MariaDB
    root user without the proper authorisation.
    
    Set root password? [Y/n] y
    New password:
    Re-enter new password:
    Password updated successfully!
    Reloading privilege tables..
     ... Success!
    
    
    By default, a MariaDB installation has an anonymous user, allowing anyone
    to log into MariaDB without having to have a user account created for
    them.  This is intended only for testing, and to make the installation
    go a bit smoother.  You should remove them before moving into a
    production environment.
    
    Remove anonymous users? [Y/n] y
     ... Success!
    
    Normally, root should only be allowed to connect from 'localhost'.  This
    ensures that someone cannot guess at the root password from the network.
    
    Disallow root login remotely? [Y/n] y
     ... Success!
    
    By default, MariaDB comes with a database named 'test' that anyone can
    access.  This is also intended only for testing, and should be removed
    before moving into a production environment.
    
    Remove test database and access to it? [Y/n] y
     - Dropping test database...
      ... Success!
     - Removing privileges on test database...
       ... Success!
    
    Reloading the privilege tables will ensure that all changes made so far
    will take effect immediately.
    
    Reload privilege tables now? [Y/n]
    
      ... Success!
    
    Cleaning up...
    
    All done!  If you've completed all of the above steps, your MariaDB
    installation should now be secure.
    
    Thanks for using MariaDB!

Attivare l'impostazione di avvio automatico per il server MariaDB

Verificare che la funzione di avvio automatico sia attivata per il server MariaDB. Se non si attiva la funzione di avvio automatico e il sistema su cui risiede il software MetroCluster Tiebreaker deve essere riavviato, il software Tiebreaker continua a funzionare, ma il servizio MariaDB non può essere riavviato e non è possibile apportare modifiche alla configurazione.

Fasi
  1. Attivare il servizio di avvio automatico:

    [root@mcctb ~]# systemctl enable mariadb.service

  2. Verificare che MariaDB sia abilitato all'avvio automatico all'avvio:

    [root@mcctb ~]# systemctl list-unit-files mariadb.service

    UNIT FILE          State
    ------------------ ----------
    mariadb.service    enabled