def change_data_dir(self, password=None): data_dir = niftycloud.config.get("MySQL", "data_dir", "/mnt") fresh_install = False is_mysql_running_command = ShellCommand("mysqladmin ping") # exit status 0 if mysql is running is_mysql_running_command.run() if is_mysql_running_command.getStatus() == 0: # mysql is running. This is the state apt-get will leave it in. If it isn't running, # that means mysql was already installed on the AMI and there's no need to stop it, # saving 40 seconds on instance startup. time.sleep(10) # trying to stop mysql immediately after installing it fails # We need to wait until mysql creates the root account before we kill it # or bad things will happen i = 0 while self.run("echo 'quit' | mysql -u root") != 0 and i < 5: time.sleep(5) i = i + 1 self.run("/etc/init.d/mysql stop") self.run("pkill -9 mysql") mysql_path = os.path.join(data_dir, "mysql") if not os.path.exists(mysql_path): self.run("mkdir %s" % mysql_path) fresh_install = True self.run("chown -R mysql:mysql %s" % mysql_path) fp = open("/etc/mysql/conf.d/use_mnt.cnf", "w") fp.write("# created by pyami\n") fp.write("# use the %s volume for data\n" % data_dir) fp.write("[mysqld]\n") fp.write("datadir = %s\n" % mysql_path) fp.write("log_bin = %s\n" % os.path.join(mysql_path, "mysql-bin.log")) fp.close() if fresh_install: self.run("cp -pr /var/lib/mysql/* %s/" % mysql_path) self.start("mysql") else: # get the password ubuntu expects to use: config_parser = ConfigParser() config_parser.read("/etc/mysql/debian.cnf") password = config_parser.get("client", "password") # start the mysql deamon, then mysql with the required grant statement piped into it: self.start("mysql") time.sleep(10) # time for mysql to start grant_command = ( "echo \"GRANT ALL PRIVILEGES ON *.* TO 'debian-sys-maint'@'localhost' IDENTIFIED BY '%s' WITH GRANT OPTION;\" | mysql" % password ) while self.run(grant_command) != 0: time.sleep(5)
def save_option(self, path, section, option, value): """ Write the specified Section.Option to the config file specified by path. Replace any previous value. If the path doesn't exist, create it. Also add the option the the in-memory config. """ config = ConfigParser() config.read(path) if not config.has_section(section): config.add_section(section) config.set(section, option, value) fp = open(path, 'w') config.write(fp) fp.close() if not self.has_section(section): self.add_section(section) self.set(section, option, value)