diff options
Diffstat (limited to 'gnu')
| -rw-r--r-- | gnu/services/databases.scm | 119 |
1 files changed, 118 insertions, 1 deletions
diff --git a/gnu/services/databases.scm b/gnu/services/databases.scm index 690375eb09..e136d1e00b 100644 --- a/gnu/services/databases.scm +++ b/gnu/services/databases.scm @@ -27,7 +27,9 @@ #:use-module (guix records) #:use-module (guix gexp) #:use-module (ice-9 match) - #:export (postgresql-service)) + #:export (postgresql-service + mysql-service + mysql-configuration)) ;;; Commentary: ;;; @@ -143,3 +145,118 @@ and stores the database cluster in @var{data-directory}." (postgresql postgresql) (config-file config-file) (data-directory data-directory)))) + + +;;; +;;; MySQL. +;;; + +(define-record-type* <mysql-configuration> + mysql-configuration make-mysql-configuration + mysql-configuration? + (mysql mysql-configuration-mysql (default mariadb))) + +(define %mysql-accounts + (list (user-group + (name "mysql") + (system? #t)) + (user-account + (name "mysql") + (group "mysql") + (system? #t) + (home-directory "/var/empty") + (shell #~(string-append #$shadow "/sbin/nologin"))))) + +(define mysql-configuration-file + (match-lambda + (($ <mysql-configuration> mysql) + (plain-file "my.cnf" "[mysqld] +datadir=/var/lib/mysql +socket=/run/mysqld/mysqld.sock +")))) + +(define (%mysql-activation config) + "Return an activation gexp for the MySQL or MariaDB database server." + (let ((mysql (mysql-configuration-mysql config)) + (my.cnf (mysql-configuration-file config))) + #~(begin + (use-modules (ice-9 popen) + (guix build utils)) + (let* ((mysqld (string-append #$mysql "/bin/mysqld")) + (user (getpwnam "mysql")) + (uid (passwd:uid user)) + (gid (passwd:gid user)) + (datadir "/var/lib/mysql") + (rundir "/run/mysqld")) + (mkdir-p datadir) + (chown datadir uid gid) + (mkdir-p rundir) + (chown rundir uid gid) + ;; Initialize the database when it doesn't exist. + (when (not (file-exists? (string-append datadir "/mysql"))) + (if (string-prefix? "mysql-" (strip-store-file-name #$mysql)) + ;; For MySQL. + (system* mysqld + (string-append "--defaults-file=" #$my.cnf) + "--initialize" + "--user=mysql") + ;; For MariaDB. + ;; XXX: The 'mysql_install_db' script doesn't work directly + ;; due to missing 'mkdir' in PATH. + (let ((p (open-pipe* OPEN_WRITE mysqld + (string-append + "--defaults-file=" #$my.cnf) + "--bootstrap" + "--user=mysql"))) + ;; Create the system database, as does by 'mysql_install_db'. + (display "create database mysql;\n" p) + (display "use mysql;\n" p) + (for-each + (lambda (sql) + (call-with-input-file + (string-append #$mysql "/share/mysql/" sql) + (lambda (in) (dump-port in p)))) + '("mysql_system_tables.sql" + "mysql_performance_tables.sql" + "mysql_system_tables_data.sql" + "fill_help_tables.sql")) + ;; Remove the anonymous user and disable root access from + ;; remote machines, as does by 'mysql_secure_installation'. + (display " +DELETE FROM user WHERE User=''; +DELETE FROM user WHERE User='root' AND + Host NOT IN ('localhost', '127.0.0.1', '::1'); +FLUSH PRIVILEGES; +" p) + (close-pipe p)))))))) + +(define (mysql-shepherd-service config) + (list (shepherd-service + (provision '(mysql)) + (documentation "Run the MySQL server.") + (start (let ((mysql (mysql-configuration-mysql config)) + (my.cnf (mysql-configuration-file config))) + #~(make-forkexec-constructor + (list (string-append #$mysql "/bin/mysqld") + (string-append "--defaults-file=" #$my.cnf)) + #:user "mysql" #:group "mysql"))) + (stop #~(make-kill-destructor))))) + +(define mysql-service-type + (service-type + (name 'mysql) + (extensions + (list (service-extension account-service-type + (const %mysql-accounts)) + (service-extension activation-service-type + %mysql-activation) + (service-extension shepherd-root-service-type + mysql-shepherd-service))))) + +(define* (mysql-service #:key (config (mysql-configuration))) + "Return a service that runs @command{mysqld}, the MySQL or MariaDB +database server. + +The optional @var{config} argument specifies the configuration for +@command{mysqld}, which should be a @code{<mysql-configuration>} object." + (service mysql-service-type config)) |