server_replication.php

   1 <?php
   2 /* vim: set expandtab sw=4 ts=4 sts=4: */
   3 /**
   4  *
   5  * @package phpMyAdmin
   6  */
   7
   8 /**
   9  *
  10  */
  11 require_once './libraries/common.inc.php';
  12
  13 /**
  14  * Does the common work
  15  */
  16 $GLOBALS['js_include'][] = 'server_privileges.js';
  17 $GLOBALS['js_include'][] = 'replication.js';
  18
  19 require './libraries/server_common.inc.php';
  20 require './libraries/replication.inc.php';
  21 require './libraries/replication_gui.lib.php';
  22 require_once './libraries/server_synchronize.lib.php';
  23
  24 /**
  25  * Checks if the user is allowed to do what he tries to...
  26  */
  27 if (! $is_superuser) {
  28     require './libraries/server_links.inc.php';
  29     echo '<h2>' . "\n"
  30         . PMA_getIcon('s_replication.png')
  31         . __('Replication') . "\n"
  32         . '</h2>' . "\n";
  33     PMA_Message::error(__('No Privileges'))->display();
  34     require './libraries/footer.inc.php';
  35 }
  36
  37 /**
  38  * Handling control requests
  39  */
  40 if (isset($GLOBALS['sr_take_action'])) {
  41     $refresh = false;
  42     if (isset($GLOBALS['slave_changemaster'])) {
  43         $_SESSION['replication']['m_username'] = $sr['username'] = PMA_sqlAddSlashes($GLOBALS['username']);
  44         $_SESSION['replication']['m_password'] = $sr['pma_pw']   = PMA_sqlAddSlashes($GLOBALS['pma_pw']);
  45         $_SESSION['replication']['m_hostname'] = $sr['hostname'] = PMA_sqlAddSlashes($GLOBALS['hostname']);
  46         $_SESSION['replication']['m_port']     = $sr['port']     = PMA_sqlAddSlashes($GLOBALS['port']);
  47         $_SESSION['replication']['m_correct']  = '';
  48         $_SESSION['replication']['sr_action_status'] = 'error';
  49         $_SESSION['replication']['sr_action_info'] = __('Unknown error');
  50
  51         // Attempt to connect to the new master server
  52         $link_to_master = PMA_replication_connect_to_master($sr['username'], $sr['pma_pw'], $sr['hostname'], $sr['port']);
  53
  54         if (! $link_to_master) {
  55             $_SESSION['replication']['sr_action_status'] = 'error';
  56             $_SESSION['replication']['sr_action_info'] = sprintf(__('Unable to connect to master %s.'), htmlspecialchars($sr['hostname']));
  57         } else {
  58             // Read the current master position
  59             $position = PMA_replication_slave_bin_log_master($link_to_master);
  60
  61             if (empty($position)) {
  62                 $_SESSION['replication']['sr_action_status'] = 'error';
  63                 $_SESSION['replication']['sr_action_info'] = __('Unable to read master log position. Possible privilege problem on master.');
  64             } else {
  65                 $_SESSION['replication']['m_correct']  = true;
  66
  67                 if (! PMA_replication_slave_change_master($sr['username'], $sr['pma_pw'], $sr['hostname'], $sr['port'], $position, true, false)) {
  68                     $_SESSION['replication']['sr_action_status'] = 'error';
  69                     $_SESSION['replication']['sr_action_info'] = __('Unable to change master');
  70                 } else {
  71                     $_SESSION['replication']['sr_action_status'] = 'success';
  72                     $_SESSION['replication']['sr_action_info'] = sprintf(__('Master server changed successfully to %s'), htmlspecialchars($sr['hostname']));
  73                 }
  74             }
  75         }
  76     } elseif (isset($GLOBALS['sr_slave_server_control'])) {
  77         if ($GLOBALS['sr_slave_action'] == 'reset') {
  78             PMA_replication_slave_control("STOP");
  79             PMA_DBI_try_query("RESET SLAVE;");
  80             PMA_replication_slave_control("START");
  81         } else {
  82             PMA_replication_slave_control($GLOBALS['sr_slave_action'], $GLOBALS['sr_slave_control_parm']);
  83         }
  84         $refresh = true;
  85
  86     } elseif (isset($GLOBALS['sr_slave_skip_error'])) {
  87         $count = 1;
  88         if (isset($GLOBALS['sr_skip_errors_count'])) {
  89             $count = $GLOBALS['sr_skip_errors_count'] * 1;
  90         }
  91         PMA_replication_slave_control("STOP");
  92         PMA_DBI_try_query("SET GLOBAL SQL_SLAVE_SKIP_COUNTER = ".$count.";");
  93         PMA_replication_slave_control("START");
  94
  95     } elseif (isset($GLOBALS['sl_sync'])) {
  96         // TODO username, host and port could be read from 'show slave status',
  97         // when asked for a password this might work in more situations then just after changing master (where the master password is stored in session)
  98         $src_link = PMA_replication_connect_to_master($_SESSION['replication']['m_username'], $_SESSION['replication']['m_password'], $_SESSION['replication']['m_hostname'], $_SESSION['replication']['m_port']);
  99         $trg_link = null; // using null to indicate the current PMA server
 100
 101         $data = PMA_DBI_fetch_result('SHOW MASTER STATUS', null, null, $src_link); // let's find out, which databases are replicated
 102
 103         $do_db     = array();
 104         $ignore_db = array();
 105         $dblist    = array();
 106
 107         if (! empty($data[0]['Binlog_Do_DB'])) {
 108             $do_db     = explode(',', $data[0]['Binlog_Do_DB']);
 109         }
 110         if (! empty($data[0]['Binlog_Ignore_DB'])) {
 111             $ignore_db = explode(',', $data[0]['Binlog_Ignore_DB']);
 112         }
 113
 114         $tmp_alldbs = PMA_DBI_query('SHOW DATABASES;', $src_link);
 115         while ($tmp_row = PMA_DBI_fetch_row($tmp_alldbs)) {
 116             if ($tmp_row[0] == 'information_schema') {
 117                 continue;
 118             }
 119             if (count($do_db) == 0) {
 120                 if (array_search($tmp_row[0], $ignore_db) !== false) {
 121                     continue;
 122                 }
 123                 $dblist[] = $tmp_row[0];
 124
 125                 PMA_DBI_query('CREATE DATABASE IF NOT EXISTS '.PMA_backquote($tmp_row[0]), $trg_link);
 126             } else {
 127                 if (array_search($tmp_row[0], $do_db) !== false) {
 128                     $dblist[] = $tmp_row[0];
 129                     PMA_DBI_query('CREATE DATABASE IF NOT EXISTS '.PMA_backquote($tmp_row[0]), $trg_link);
 130                 }
 131             }
 132         } // end while
 133
 134         unset($do_db, $ignore_db, $data);
 135
 136         if (isset($GLOBALS['repl_data'])) {
 137             $include_data = true;
 138         } else {
 139             $include_data = false;
 140         }
 141         foreach ($dblist as $db) {
 142             PMA_replication_synchronize_db($db, $src_link, $trg_link, $include_data);
 143         }
 144         // TODO some form of user feedback error/success would be nice
 145         //  What happens if $dblist is empty?
 146         //  or sync failed?
 147     }
 148
 149     if ($refresh) {
 150         Header("Location: ". PMA_generate_common_url($GLOBALS['url_params']));
 151     }
 152     unset($refresh);
 153 }
 154 /**
 155  * Displays the links
 156  */
 157 require './libraries/server_links.inc.php';
 158
 159 echo '<div id="replication">';
 160 echo ' <h2>';
 161 echo '   <img class="icon ic_s_replication" src="themes/dot.gif" alt="" />';
 162 echo     __('Replication');
 163 echo ' </h2>';
 164
 165 // Display error messages
 166 if (isset($_SESSION['replication']['sr_action_status']) && isset($_SESSION['replication']['sr_action_info'])) {
 167     if ($_SESSION['replication']['sr_action_status'] == 'error') {
 168         PMA_Message::error($_SESSION['replication']['sr_action_info'])->display();
 169         $_SESSION['replication']['sr_action_status'] = 'unknown';
 170     } elseif ($_SESSION['replication']['sr_action_status'] == 'success') {
 171         PMA_Message::success($_SESSION['replication']['sr_action_info'])->display();
 172         $_SESSION['replication']['sr_action_status'] = 'unknown';
 173     }
 174 }
 175
 176 if ($server_master_status) {
 177     if (! isset($GLOBALS['repl_clear_scr'])) {
 178         echo '<fieldset>';
 179         echo '<legend>' . __('Master replication') . '</legend>';
 180         echo __('This server is configured as master in a replication process.');
 181         echo '<ul>';
 182         echo '  <li><a href="#" id="master_status_href">' . __('Show master status') . '</a></li>';
 183         PMA_replication_print_status_table('master', true, false);
 184
 185         echo '  <li><a href="#" id="master_slaves_href">' . __('Show connected slaves') . '</a></li>';
 186         PMA_replication_print_slaves_table(true);
 187
 188         $_url_params = $GLOBALS['url_params'];
 189         $_url_params['mr_adduser'] = true;
 190         $_url_params['repl_clear_scr'] = true;
 191
 192         echo '  <li><a href="' . PMA_generate_common_url($_url_params) . '" id="master_addslaveuser_href">' . __('Add slave replication user') . '</a></li>';
 193     }
 194
 195     // Display 'Add replication slave user' form
 196     if (isset($GLOBALS['mr_adduser'])) {
 197         PMA_replication_gui_master_addslaveuser();
 198     } elseif (! isset($GLOBALS['repl_clear_scr'])) {
 199         echo "</ul>";
 200         echo "</fieldset>";
 201     }
 202 } elseif (! isset($GLOBALS['mr_configure']) && ! isset($GLOBALS['repl_clear_scr'])) {
 203     $_url_params = $GLOBALS['url_params'];
 204     $_url_params['mr_configure'] = true;
 205
 206     echo '<fieldset>';
 207     echo '<legend>' . __('Master replication') . '</legend>';
 208     echo sprintf(__('This server is not configured as master in a replication process. Would you like to <a href="%s">configure</a> it?'), PMA_generate_common_url($_url_params));
 209     echo '</fieldset>';
 210 }
 211
 212 if (isset($GLOBALS['mr_configure'])) {
 213     // Render the 'Master configuration' section
 214     echo '<fieldset>';
 215     echo '<legend>' . __('Master configuration') . '</legend>';
 216     echo __('This server is not configured as master server in a replication process. You can choose from either replicating all databases and ignoring certain (useful if you want to replicate majority of databases) or you can choose to ignore all databases by default and allow only certain databases to be replicated. Please select the mode:') . '<br /><br />';
 217
 218     echo '<select name="db_type" id="db_type">';
 219     echo '<option value="all">' . __('Replicate all databases; Ignore:') . '</option>';
 220     echo '<option value="ign">' . __('Ignore all databases; Replicate:') . '</option>';
 221     echo '</select>';
 222     echo '<br /><br />';
 223     echo __('Please select databases:') . '<br />';
 224     echo PMA_replication_db_multibox();
 225     echo '<br /><br />';
 226     echo __('Now, add the following lines at the end of [mysqld] section in your my.cnf and please restart the MySQL server afterwards.') . '<br />';
 227     echo '<pre id="rep"></pre>';
 228     echo __('Once you restarted MySQL server, please click on Go button. Afterwards, you should see a message informing you, that this server <b>is</b> configured as master');
 229     echo '</fieldset>';
 230     echo '<fieldset class="tblFooters">';
 231     echo ' <form method="post" action="server_replication.php" >';
 232     echo PMA_generate_common_hidden_inputs('', '');
 233     echo '  <input type="submit" value="' . __('Go') . '" id="goButton" />';
 234     echo ' </form>';
 235     echo '</fieldset>';
 236
 237     require './libraries/footer.inc.php';
 238     exit;
 239 }
 240
 241 echo '</div>';
 242
 243 if (! isset($GLOBALS['repl_clear_scr'])) {
 244     // Render the 'Slave configuration' section
 245     echo '<fieldset>';
 246     echo '<legend>' . __('Slave replication') . '</legend>';
 247     if ($server_slave_status) {
 248         echo '<div id="slave_configuration_gui">';
 249
 250         $_url_params = $GLOBALS['url_params'];
 251         $_url_params['sr_take_action'] = true;
 252         $_url_params['sr_slave_server_control'] = true;
 253
 254         if ($server_slave_replication[0]['Slave_IO_Running'] == 'No') {
 255             $_url_params['sr_slave_action'] = 'start';
 256         } else {
 257             $_url_params['sr_slave_action'] = 'stop';
 258         }
 259
 260         $_url_params['sr_slave_control_parm'] = 'IO_THREAD';
 261         $slave_control_io_link = PMA_generate_common_url($_url_params);
 262
 263         if ($server_slave_replication[0]['Slave_SQL_Running'] == 'No') {
 264             $_url_params['sr_slave_action'] = 'start';
 265         } else {
 266             $_url_params['sr_slave_action'] = 'stop';
 267         }
 268
 269         $_url_params['sr_slave_control_parm'] = 'SQL_THREAD';
 270         $slave_control_sql_link = PMA_generate_common_url($_url_params);
 271
 272         if ($server_slave_replication[0]['Slave_IO_Running'] == 'No'
 273             || $server_slave_replication[0]['Slave_SQL_Running'] == 'No'
 274         ) {
 275             $_url_params['sr_slave_action'] = 'start';
 276         } else {
 277             $_url_params['sr_slave_action'] = 'stop';
 278         }
 279
 280         $_url_params['sr_slave_control_parm'] = null;
 281         $slave_control_full_link = PMA_generate_common_url($_url_params);
 282
 283         $_url_params['sr_slave_action'] = 'reset';
 284         $slave_control_reset_link = PMA_generate_common_url($_url_params);
 285
 286         $_url_params = $GLOBALS['url_params'];
 287         $_url_params['sr_slave_skip_error'] = true;
 288         $slave_skip_error_link = PMA_generate_common_url($_url_params);
 289
 290         if ($server_slave_replication[0]['Slave_SQL_Running'] == 'No') {
 291             PMA_Message::error(__('Slave SQL Thread not running!'))->display();
 292         }
 293         if ($server_slave_replication[0]['Slave_IO_Running'] == 'No') {
 294             PMA_Message::error(__('Slave IO Thread not running!'))->display();
 295         }
 296
 297         $_url_params = $GLOBALS['url_params'];
 298         $_url_params['sl_configure'] = true;
 299         $_url_params['repl_clear_scr'] = true;
 300
 301         $reconfiguremaster_link = PMA_generate_common_url($_url_params);
 302
 303         echo __('Server is configured as slave in a replication process. Would you like to:');
 304         echo '<br />';
 305         echo '<ul>';
 306         echo ' <li><a href="#" id="slave_status_href">' . __('See slave status table') . '</a></li>';
 307         echo PMA_replication_print_status_table('slave', true, false);
 308         if (isset($_SESSION['replication']['m_correct']) && $_SESSION['replication']['m_correct'] == true) {
 309             echo ' <li><a href="#" id="slave_synchronization_href">' . __('Synchronize databases with master') . '</a></li>';
 310             echo ' <div id="slave_synchronization_gui" style="display: none">';
 311             echo '  <form method="post" action="server_replication.php">';
 312             echo PMA_generate_common_hidden_inputs('', '');
 313             echo '   <input type="checkbox" name="repl_struc" value="1" checked="checked" disabled="disabled" /> ' . __('Structure') . '<br />'; // this is just for vizualization, it has no other purpose
 314             echo '   <input type="checkbox" name="repl_data"  value="1" checked="checked" /> ' . __('Data') .' <br />';
 315             echo '   <input type="hidden" name="sr_take_action" value="1" />';
 316             echo '   <input type="submit" name="sl_sync" value="' . __('Go') . '" />';
 317             echo '  </form>';
 318             echo ' </div>';
 319         }
 320         echo ' <li><a href="#" id="slave_control_href">' . __('Control slave:') . '</a>';
 321         echo ' <div id="slave_control_gui" style="display: none">';
 322         echo '  <ul>';
 323         echo '   <li><a href="'. $slave_control_full_link . '">' . (($server_slave_replication[0]['Slave_IO_Running'] == 'No' || $server_slave_replication[0]['Slave_SQL_Running'] == 'No') ? __('Full start') : __('Full stop')) . ' </a></li>';
 324         echo '   <li><a href="'. $slave_control_reset_link . '">' . __('Reset slave') . '</a></li>';
 325         if ($server_slave_replication[0]['Slave_SQL_Running'] == 'No') {
 326             echo '   <li><a href="' . $slave_control_sql_link . '">' . __('Start SQL Thread only') . '</a></li>';
 327         } else {
 328             echo '   <li><a href="' . $slave_control_sql_link . '">' . __('Stop SQL Thread only') . '</a></li>';
 329         }
 330         if ($server_slave_replication[0]['Slave_IO_Running'] == 'No') {
 331             echo '   <li><a href="' . $slave_control_io_link . '">' . __('Start IO Thread only') . '</a></li>';
 332         } else {
 333             echo '   <li><a href="' . $slave_control_io_link . '">' . __('Stop IO Thread only') . '</a></li>';
 334         }
 335         echo '  </ul>';
 336         echo ' </div>';
 337         echo ' </li>';
 338         echo ' <li><a href="#" id="slave_errormanagement_href">' . __('Error management:') . '</a>';
 339         echo ' <div id="slave_errormanagement_gui" style="display: none">';
 340         PMA_Message::error(__('Skipping errors might lead into unsynchronized master and slave!'))->display();
 341         echo '  <ul>';
 342         echo '   <li><a href="' . $slave_skip_error_link . '">' . __('Skip current error') . '</a></li>';
 343         echo '   <li>' . __('Skip next');
 344         echo '    <form method="post" action="server_replication.php">';
 345         echo PMA_generate_common_hidden_inputs('', '');
 346         echo '      <input type="text" name="sr_skip_errors_count" value="1" style="width: 30px" />' . __('errors.');
 347         echo '              <input type="submit" name="sr_slave_skip_error" value="' . __('Go') . '" />';
 348         echo '      <input type="hidden" name="sr_take_action" value="1" />';
 349         echo '    </form></li>';
 350         echo '  </ul>';
 351         echo ' </div>';
 352         echo ' </li>';
 353         echo ' <li><a href="' . $reconfiguremaster_link . '">' . __('Change or reconfigure master server') . '</a></li>';
 354         echo '</ul>';
 355
 356     } elseif (! isset($GLOBALS['sl_configure'])) {
 357         $_url_params = $GLOBALS['url_params'];
 358         $_url_params['sl_configure'] = true;
 359         $_url_params['repl_clear_scr'] = true;
 360
 361         echo sprintf(__('This server is not configured as slave in a replication process. Would you like to <a href="%s">configure</a> it?'), PMA_generate_common_url($_url_params));
 362     }
 363     echo '</div>';
 364     echo '</fieldset>';
 365 }
 366 if (isset($GLOBALS['sl_configure'])) {
 367     PMA_replication_gui_changemaster("slave_changemaster");
 368 }
 369 require './libraries/footer.inc.php';
 370 ?>