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litespeed_wiki:cloudlinux:lsphp_criu_enable [2018/08/20 19:11] Jackson Zhang |
litespeed_wiki:cloudlinux:lsphp_criu_enable [2018/08/20 19:30] Jackson Zhang [1. Verify CRIU is enabled on your system] |
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| - | ====== How to Enable LSPHP CRIU on CloudLinux ====== | + | ====== How to Enable LSPHP CRIU on CloudLinux and cPanel EA4 ====== |
| Checkpoint/Restore In Userspace, or CRIU, is an open source project which dumps all of the information of a running process to disk and restores it at the point of the dump. The LiteSpeed Enterprise Edition Web Server now supports CRIU for the CloudLinux implementation of the PHP processor. This will improve the performance of LiteSpeed for transactions which are commonly used, and reduce the memory overhead on the server. | Checkpoint/Restore In Userspace, or CRIU, is an open source project which dumps all of the information of a running process to disk and restores it at the point of the dump. The LiteSpeed Enterprise Edition Web Server now supports CRIU for the CloudLinux implementation of the PHP processor. This will improve the performance of LiteSpeed for transactions which are commonly used, and reduce the memory overhead on the server. | ||
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| Criu is installed with dependency to ea-apache24-mod_lsapi for cpanel EA4( or mod_lsapi for cpanel EA3) 1.1 and above package. If you have not installed it, you should: | Criu is installed with dependency to ea-apache24-mod_lsapi for cpanel EA4( or mod_lsapi for cpanel EA3) 1.1 and above package. If you have not installed it, you should: | ||
| + | <code>yum install liblsapi liblsapi-devel</code> | ||
| <code>yum install ea-apache24-mod_lsapi</code> | <code>yum install ea-apache24-mod_lsapi</code> | ||
| Check CRIU whether the service is running or not. \\ | Check CRIU whether the service is running or not. \\ | ||
| + | |||
| + | ps -ef | grep criu | ||
| + | root 967641 1 0 19:24 ? 00:00:00 /usr/sbin/criu service -v4 -o /var/log/criu-service.log --address /var/run/criu/criu_service.socket | ||
| + | root 967680 965818 0 19:24 pts/1 00:00:00 grep --color=auto criu | ||
| + | |||
| + | | ||
| If not, enable by following method: | If not, enable by following method: | ||
| <code> | <code> | ||
| - | systemctl enable criu | + | systemctl enable criu |
| systemctl start criu | systemctl start criu | ||
| systemctl status criu | systemctl status criu | ||
| </code> | </code> | ||
| + | |||
| + | |||
| Output should be ''Active: active (running)''. | Output should be ''Active: active (running)''. | ||
| + | |||
| + | [root@globalsupport ~]# systemctl status criu | ||
| + | ● criu.service - Checkpoint Restore in Userspace daemon | ||
| + | Loaded: loaded (/usr/lib/systemd/system/criu.service; disabled; vendor preset: disabled) | ||
| + | Active: active (running) since Mon 2018-08-20 19:24:25 UTC; 4min 23s ago | ||
| + | Process: 967640 ExecStartPre=/bin/mkdir -p /var/run/criu (code=exited, status=0/SUCCESS) | ||
| + | Main PID: 967641 (criu) | ||
| + | CGroup: /system.slice/criu.service | ||
| + | └─967641 /usr/sbin/criu service -v4 -o /var/log/criu-service.log --address /var/run/criu/criu_service.socket | ||
| + | |||
| + | Aug 20 19:24:25 globalsupport.litespeedtech.com systemd[1]: Starting Checkpoint Restore in Userspace daemon... | ||
| + | Aug 20 19:24:25 globalsupport.litespeedtech.com systemd[1]: Started Checkpoint Restore in Userspace daemon. | ||
| + | Aug 20 19:24:25 globalsupport.litespeedtech.com criu[967641]: Warn (criu/kerndat.c:660): Can't load /run/criu.kdat | ||
| + | |||
| ====2. Check CRIU parameters==== | ====2. Check CRIU parameters==== | ||