无法使用 phpcassa 连接到 localhost:9160

Posted 2023-04-18

【中文标题】无法使用 phpcassa 连接到 localhost:9160

【英文标题】：Could not connect to localhost:9160 with phpcassa

【发布时间】：2011-12-01 12:19:48

【问题描述】：

我遇到了这样的问题：当负载增加到每秒 200 个脚本查询时，phpcassa 会导致这样的异常

Error connecting to localhost:9160: TException: TSocket: Could not connect to localhost:9160 (Cannot assign requested address [99])
Error connecting to localhost:9160: TException: TSocket: Could not connect to localhost:9160 (Cannot assign requested address [99])
PHP Fatal error:  Uncaught exception 'NoServerAvailable' with message 'An attempt was made to connect to every server twice, but all attempts failed. The last error was: TException:TSocket: Could not connect to localhost:9160 (Cannot assign requested address [99])' in /var/www/megaumnik/context/connection.php:232
Stack trace:
#0 /var/www/megaumnik/context/connection.php(257): ConnectionPool->make_conn()
#1 /var/www/megaumnik/context/connection.php(351): ConnectionPool->get()
#2 /var/www/megaumnik/context/connection.php(286): ConnectionPool->call('describe_keyspa...', 'thegame')
#3 /var/www/megaumnik/context/columnfamily.php(194): ConnectionPool->describe_keyspace()
#4 /var/www/megaumnik/data/getData.class.php(265): ColumnFamily->__construct(Object(ConnectionPool), 'username')
#5 /var/www/megaumnik/data/test.php(6): getData->getDataByKey('username', '317')
#6 main
  thrown in /var/www/megaumnik/context/connection.php on line 232

脚本有 4 个来自不同列族的 $cf->get()。每个列族有 1000 行

【参考方案1】：

听起来您可能正在达到打开文件的限制。您可以使用 'ulimit -a' 查看当前限制。

要增加限制，您可以通过以下两种方式之一设置新限制。首先，您可以执行类似“ulimit -n 10000”之类的操作，这是临时的，只会影响由该 shell 启动的进程。要永久增加限制，您需要在 /etc/security/limits.conf 中添加如下所示的一行：

*               -       nofile      10000

为使此功能生效，我认为您需要重新登录。