La versione in lingua italiana fornita proviene da una traduzione automatica. Per eventuali incoerenze, fare riferimento alla versione in lingua inglese.

Installare le dipendenze di MetroCluster tiebreaker 1,5

04/25/2024 Collaboratori

PDF

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

Fasi

Installare JDK
Installare e configurare il vault

Installare il server MySQL o MariaDB:

Se l'host Linux è

Quindi…

Red Hat Enterprise Linux 7/CentOS 7

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

Red Hat Enterprise Linux 8

Installare il server MariaDB su Red Hat Enterprise Linux 8

Installare JDK

È necessario installare JDK sul sistema host prima di installare o aggiornare il software tiebreaker. Tiebreaker 1,5 e versioni successive supporta OpenJDK 17, 18 o 19.

Fasi

Accedere come utente "root" o come utente sudo che può passare alla modalità avanzata dei privilegi.
```
login as: root
root@mcctb's password:
Last login: Fri Jan  8 21:33:00 2017 from host.domain.com
```
Controllare le versioni JDK disponibili:

yum search openjdk
Installare JDK 17,18 o 19.

Il seguente comando installa JDK 17:

yum install java-17-openjdk

Verificare l'installazione:

java -version

Una corretta installazione visualizza il seguente output:

openjdk version "17.0.2" 2022-01-18 LTS
OpenJDK Runtime Environment 21.9 (build 17.0.2+8-LTS)
OpenJDK 64-Bit Server VM 21.9 (build 17.0.2+8-LTS, mixed mode, sharing)

Installare e configurare il vault

Se non si dispone o si desidera utilizzare il server del vault locale, è necessario installare Vault. Si può fare riferimento a questa procedura standard per l'installazione del vault o fare riferimento alle istruzioni di installazione di Hashicorp per linee guida alternative.

Se si dispone di un server vault nella rete, è possibile configurare l'host MetroCluster Tiebreaker per l'utilizzo dell'installazione del vault. In questo caso, non è necessario installare Vault sull'host.

Fasi

Passare a. /bin directory:
```
[root@mcctb] cd /bin
```

Scaricare il file zip del vault.

[root@mcctb /bin]#  curl -sO https://releases.hashicorp.com/vault/1.12.2/vault_1.12.2_linux_amd64.zip

Decomprimere il file del vault.

[root@mcctb /bin]# unzip vault_1.12.2_linux_amd64.zip
Archive:  vault_1.12.2_linux_amd64.zip
  inflating: vault

Verificare l'installazione.

[root@mcctb /bin]# vault -version
Vault v1.12.2 (415e1fe3118eebd5df6cb60d13defdc01aa17b03), built 2022-11-23T12:53:46Z

Passare a. /root directory:
```
[root@mcctb /bin] cd /root
```

Creare un file di configurazione del vault in /root directory.

Su [root@mcctb ~] prompt, copiare ed eseguire il comando seguente per creare config.hcl file:

# cat > config.hcl << EOF
 storage "file" {
  address = "127.0.0.1:8500"
  path    = "/mcctb_vdata/data"
 }
 listener "tcp" {
   address     = "127.0.0.1:8200"
   tls_disable = 1
 }
EOF

Avviare il server del vault:

[root@mcctb ~] vault server -config config.hcl &

Esportare l'indirizzo del vault.

[root@mcctb ~]# export VAULT_ADDR="http://127.0.0.1:8200"

Inizializzare il vault.

[root@mcctb ~]# vault operator init
2022-12-15T14:57:22.113+0530 [INFO]  core: security barrier not initialized
2022-12-15T14:57:22.113+0530 [INFO]  core: seal configuration missing, not initialized
2022-12-15T14:57:22.114+0530 [INFO]  core: security barrier not initialized
2022-12-15T14:57:22.116+0530 [INFO]  core: security barrier initialized: stored=1 shares=5 threshold=3
2022-12-15T14:57:22.118+0530 [INFO]  core: post-unseal setup starting
2022-12-15T14:57:22.137+0530 [INFO]  core: loaded wrapping token key
2022-12-15T14:57:22.137+0530 [INFO]  core: Recorded vault version: vault version=1.12.2 upgrade time="2022-12-15 09:27:22.137200412 +0000 UTC" build date=2022-11-23T12:53:46Z
2022-12-15T14:57:22.137+0530 [INFO]  core: successfully setup plugin catalog: plugin-directory=""
2022-12-15T14:57:22.137+0530 [INFO]  core: no mounts; adding default mount table
2022-12-15T14:57:22.143+0530 [INFO]  core: successfully mounted backend: type=cubbyhole version="" path=cubbyhole/
2022-12-15T14:57:22.144+0530 [INFO]  core: successfully mounted backend: type=system version="" path=sys/
2022-12-15T14:57:22.144+0530 [INFO]  core: successfully mounted backend: type=identity version="" path=identity/
2022-12-15T14:57:22.148+0530 [INFO]  core: successfully enabled credential backend: type=token version="" path=token/ namespace="ID: root. Path: "
2022-12-15T14:57:22.149+0530 [INFO]  rollback: starting rollback manager
2022-12-15T14:57:22.149+0530 [INFO]  core: restoring leases
2022-12-15T14:57:22.150+0530 [INFO]  expiration: lease restore complete
2022-12-15T14:57:22.150+0530 [INFO]  identity: entities restored
2022-12-15T14:57:22.150+0530 [INFO]  identity: groups restored
2022-12-15T14:57:22.151+0530 [INFO]  core: usage gauge collection is disabled
2022-12-15T14:57:23.385+0530 [INFO]  core: post-unseal setup complete
2022-12-15T14:57:23.387+0530 [INFO]  core: root token generated
2022-12-15T14:57:23.387+0530 [INFO]  core: pre-seal teardown starting
2022-12-15T14:57:23.387+0530 [INFO]  rollback: stopping rollback manager
2022-12-15T14:57:23.387+0530 [INFO]  core: pre-seal teardown complete
Unseal Key 1: <unseal_key_1_id>
Unseal Key 2: <unseal_key_2_id>
Unseal Key 3: <unseal_key_3_id>
Unseal Key 4: <unseal_key_4_id>
Unseal Key 5: <unseal_key_5_id>

Initial Root Token: <initial_root_token_id>


Vault initialized with 5 key shares and a key threshold of 3. Please securely
distribute the key shares printed above. When the Vault is re-sealed,
restarted, or stopped, you must supply at least 3 of these keys to unseal it
before it can start servicing requests.

Vault does not store the generated root key. Without at least 3 keys to
reconstruct the root key, Vault will remain permanently sealed!

It is possible to generate new unseal keys, provided you have a quorum of
existing unseal keys shares. See "vault operator rekey" for more information.

È necessario registrare e memorizzare gli ID della chiave e il token principale iniziale in una posizione sicura per poterli utilizzare successivamente nella procedura.

Esportare il token root del vault.

[root@mcctb ~]#  export VAULT_TOKEN="<initial_root_token_id>"

Rimuovere il sigillo del vault usando tre delle cinque chiavi create.

È necessario eseguire vault operator unseal comando per ciascuna delle tre chiavi:

Rimuovere il sigillo del vault usando la prima chiave:

[root@mcctb ~]# vault operator unseal
Unseal Key (will be hidden):
Key                Value
---                -----
Seal Type          shamir
Initialized        true
Sealed             true
Total Shares       5
Threshold          3
Unseal Progress    1/3
Unseal Nonce       <unseal_key_1_id>
Version            1.12.2
Build Date         2022-11-23T12:53:46Z
Storage Type       file
HA Enabled         false

Rimuovere il sigillo del vault usando la seconda chiave:

[root@mcctb ~]# vault operator unseal
Unseal Key (will be hidden):
Key                Value
---                -----
Seal Type          shamir
Initialized        true
Sealed             true
Total Shares       5
Threshold          3
Unseal Progress    2/3
Unseal Nonce       <unseal_key_2_id>
Version            1.12.2
Build Date         2022-11-23T12:53:46Z
Storage Type       file
HA Enabled         false

Rimuovere il sigillo del vault usando la terza chiave:

[root@mcctb ~]# vault operator unseal
Unseal Key (will be hidden):
2022-12-15T15:15:00.980+0530 [INFO]  core.cluster-listener.tcp: starting listener: listener_address=127.0.0.1:8201
2022-12-15T15:15:00.980+0530 [INFO]  core.cluster-listener: serving cluster requests: cluster_listen_address=127.0.0.1:8201
2022-12-15T15:15:00.981+0530 [INFO]  core: post-unseal setup starting
2022-12-15T15:15:00.981+0530 [INFO]  core: loaded wrapping token key
2022-12-15T15:15:00.982+0530 [INFO]  core: successfully setup plugin catalog: plugin-directory=""
2022-12-15T15:15:00.983+0530 [INFO]  core: successfully mounted backend: type=system version="" path=sys/
2022-12-15T15:15:00.984+0530 [INFO]  core: successfully mounted backend: type=identity version="" path=identity/
2022-12-15T15:15:00.984+0530 [INFO]  core: successfully mounted backend: type=cubbyhole version="" path=cubbyhole/
2022-12-15T15:15:00.986+0530 [INFO]  core: successfully enabled credential backend: type=token version="" path=token/ namespace="ID: root. Path: "
2022-12-15T15:15:00.986+0530 [INFO]  rollback: starting rollback manager
2022-12-15T15:15:00.987+0530 [INFO]  core: restoring leases
2022-12-15T15:15:00.987+0530 [INFO]  expiration: lease restore complete
2022-12-15T15:15:00.987+0530 [INFO]  identity: entities restored
2022-12-15T15:15:00.987+0530 [INFO]  identity: groups restored
2022-12-15T15:15:00.988+0530 [INFO]  core: usage gauge collection is disabled
2022-12-15T15:15:00.989+0530 [INFO]  core: post-unseal setup complete
2022-12-15T15:15:00.989+0530 [INFO]  core: vault is unsealed
Key             Value
---             -----
Seal Type       shamir
Initialized     true
Sealed          false
Total Shares    5
Threshold       3
Version         1.12.2
Build Date      2022-11-23T12:53:46Z
Storage Type    file
Cluster Name    vault-cluster
Cluster ID      <cluster_id>
HA Enabled      false

Verificare che lo stato del Vault Sealed sia falso.

[root@mcctb ~]# vault status
Key             Value
---             -----
Seal Type       shamir
Initialized     true
Sealed          false
Total Shares    5
Threshold       3
Version         1.12.2
Build Date      2022-11-23T12:53:46Z
Storage Type    file
Cluster Name    vault-cluster
Cluster ID      <cluster_id>
HA Enabled      false

Configurare il servizio Vault per avviarlo all'avvio.

Eseguire il seguente comando: cd /etc/systemd/system
```
[root@mcctb ~]#  cd /etc/systemd/system
```

Su [root@mcctb system] Richiedere, copiare ed eseguire il comando seguente per creare il file di servizio del vault.

# cat > vault.service << EOF
[Unit]
Description=Vault Service
After=mariadb.service

[Service]
Type=forking
ExecStart=/usr/bin/vault server -config /root/config.hcl &
Restart=on-failure

[Install]
WantedBy=multi-user.target
EOF

Eseguire il seguente comando: systemctl daemon-reload
```
[root@mcctb system]#  systemctl daemon-reload
```

Eseguire il seguente comando: systemctl enable vault.service

[root@mcctb system]#  systemctl enable vault.service
Created symlink /etc/systemd/system/multi-user.target.wants/vault.service → /etc/systemd/system/vault.service.

Viene richiesto di utilizzare questa funzione durante l'installazione di MetroCluster Tiebreaker. Se si desidera modificare il metodo per dissigillare il vault, è necessario disinstallare e reinstallare il software MetroCluster Tiebreaker.

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

Accedere come utente root o sudo che può passare alla modalità avanzata dei privilegi.

login as: root
root@mcctb's password:
Last login: Fri Jan  8 21:33:00 2016 from host.domain.com

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!

Disattivare il repository MySQL 57:

[root@mcctb ~]# yum-config-manager --disable mysql57-community
Abilitare il repository MySQL 56:

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

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

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!

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  ]

Verificare che MySQL Server sia in esecuzione:

[root@mcctb ~]# service mysqld status
```
mysqld (pid  2739) is running...
```

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...

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>

Se il login MySQL funziona, l'output terminerà con 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

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

Accedere come a. root utente o utente che può passare alla modalità avanzata dei privilegi.

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

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!

Avviare il server MariaDB:

[root@mcctb ~]# systemctl start mariadb

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.

Configurare le impostazioni di sicurezza e password:

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

Attivare il servizio di avvio automatico:

[root@mcctb ~]# systemctl enable mariadb.service
Verificare che MariaDB sia abilitato all'avvio automatico all'avvio:

[root@mcctb ~]# systemctl list-unit-files mariadb.service
```
UNIT FILE          State
------------------ ----------
mariadb.service    enabled
```

Installare le dipendenze di MetroCluster tiebreaker 1,5

Creating your file...

Installare JDK

Installare e configurare il vault

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

Abilitare l'impostazione di avvio automatico di MySQL

Installare il server MariaDB su Red Hat Enterprise Linux 8

Attivare l'impostazione di avvio automatico per il server MariaDB