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litespeed_wiki:cache:lscwp:configuration:cache:object_cache:unix-socket [2018/01/18 16:22] Lisa Clarke created |
litespeed_wiki:cache:lscwp:configuration:cache:object_cache:unix-socket [2018/01/22 13:57] Lisa Clarke [for Centos6.X] |
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| Memcached can run in a UNIX socket, which provides better performance than a TCP connection. | Memcached can run in a UNIX socket, which provides better performance than a TCP connection. | ||
| - | **Note**: If Memcached fails to start, it is usually due to permission and user problems. Please use root privilege to execute the following instructions, and verify that the socket path is writable to the designated user. | + | **Note**: If Memcached fails to start, it is usually due to permission and user problems. Please use root privilege to execute the following instructions, and verify that the socket path is writable to the designated user. |
| =====For Centos7.X===== | =====For Centos7.X===== | ||
| Line 19: | Line 20: | ||
| - Check if everything is working well: <code>nc -U /path/to/memcached.sock | - Check if everything is working well: <code>nc -U /path/to/memcached.sock | ||
| stats</code> | stats</code> | ||
| + | - If there is still a permission issue, please check selinux status: <code>getenforce</code> | ||
| + | - Disable selinux if status shows ''Enforcing'': <code>setenforce 0 </code> (reboot will re-enable selinux) | ||
| + | - To permanently disable selinux, edit ''/etc/selinux/config'', change ''enforcing'' to ''permissive''or''disabled'' and then reboot. | ||
| =====for Centos6.X===== | =====for Centos6.X===== | ||
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| - Edit ''/etc/sysconfig/memcached'' and change <code>OPTIONS="" | - Edit ''/etc/sysconfig/memcached'' and change <code>OPTIONS="" | ||
| USER=""</code> to <code>OPTIONS="-s /path/to/memcached.sock -a 0770" | USER=""</code> to <code>OPTIONS="-s /path/to/memcached.sock -a 0770" | ||
| - | USER="username"</code> where ''userid'' is the same user that runs PHP. | + | USER="username"</code> where **USER** is the same user that runs PHP. |
| - Start Memcached <code>service memcached start</code> | - Start Memcached <code>service memcached start</code> | ||
| - Check if everything is working well: <code>nc -U /path/to/memcached.sock | - Check if everything is working well: <code>nc -U /path/to/memcached.sock | ||
| stats</code> | stats</code> | ||
| + | - If there is still a permission issue, please check selinux status: <code>getenforce</code> | ||
| + | - Disable selinux if status shows ''Enforcing'': <code>setenforce 0 </code> (reboot will re-enable selinux) | ||
| + | - To permanently disable selinux, edit ''/etc/selinux/config'', change ''enforcing'' to ''permissive''or''disabled'' and then reboot. | ||
| =====For Ubuntu 17.10, Ubuntu 16.04, Debian 8 and Debian 9===== | =====For Ubuntu 17.10, Ubuntu 16.04, Debian 8 and Debian 9===== | ||