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litespeed_wiki:cloudlinux:lsphp_criu_enable [2018/05/15 15:01]
Eric Leu [Step 4]
litespeed_wiki:cloudlinux:lsphp_criu_enable [2018/08/20 19:33] (current)
Jackson Zhang [1. Verify CRIU is enabled on your system]
Line 1: Line 1:
-====== 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 both natively, and for the CloudLinux/​Apache-specific ​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.
  
 ===== Requirements ===== ===== Requirements =====
  
-  - CloudLinux System +  - CloudLinux System  
-  - LiteSpeed must be running as the root user to use CRIU Litespeed or ApacheRoot is required in order to perform the snapshot and recovery. Running as a non-root user automatically disables CRIU.+  - ea-apache24-mod_lsapi 1.1 on cpanel EA4 (or mod_lsapi on cPanel EA3)  or above  
 +  ​LiteSpeed Web Server 5.3 or above. 
 + 
  
 ===== Installation ===== ===== Installation =====
  
 ==== 1. Verify CRIU is enabled on your system ==== ==== 1. Verify CRIU is enabled on your system ====
-Log into your Linux system. Check CRIU whether the service is running or not. \\+ 
 +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>​ 
 +============================================================================================================================================================================= 
 + ​Package ​                               Arch                          Version ​                                       Repository ​                                        ​Size 
 +============================================================================================================================================================================= 
 +Installing: ​                                                                                                                                                               
 + ​liblsapi ​                              ​x86_64 ​                       1.1-28.el7.cloudlinux ​                         cloudlinux-x86_64-server-7 ​                       180 k 
 + ​liblsapi-devel ​                        ​x86_64 ​                       1.1-28.el7.cloudlinux ​                         cloudlinux-x86_64-server-7 ​                        37 k 
 +Installing for dependencies: ​                                                                                                                                              
 + ​crit-lve ​                              ​x86_64 ​                       3.7-3.el7 ​                                     cloudlinux-x86_64-server-7 ​                       9.6 k 
 + ​criu-lve ​                              ​x86_64 ​                       3.7-3.el7 ​                                     cloudlinux-x86_64-server-7 ​                       439 k 
 + ​criu-lve-devel ​                        ​x86_64 ​                       3.7-3.el7 ​                                     cloudlinux-x86_64-server-7 ​                        11 k 
 + ​libnet ​                                ​x86_64 ​                       1.1.6-7.el7 ​                                   cloudlinux-x86_64-server-7 ​                        58 k 
 + ​protobuf-c ​                            ​x86_64 ​                       1.0.2-3.el7 ​                                   cloudlinux-x86_64-server-7 ​                        27 k 
 + ​protobuf-python ​                       x86_64 ​                       2.5.0-8.el7 ​                                   cloudlinux-x86_64-server-7 ​                       129 k 
 + ​python-criu-lve ​                       x86_64 ​                       3.7-3.el7 ​                                     cloudlinux-x86_64-server-7 ​                       136 k 
 + ​python-ipaddr ​                         noarch ​                       2.1.11-1.el7                                   ​cloudlinux-x86_64-server-7 ​                        34 k 
 +                                                                                                                                                                           
 +Transaction Summary 
 +============================================================================================================================================================================= 
 +Install ​ 2 Packages (+8 Dependent packages) 
 +</​code>​ 
 + 
 +<​code>​yum install ea-apache24-mod_lsapi</​code>​ 
 + 
 +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====
-Generally PHP should be compiled with CRIU already. ​  \\+In CloudLinux, LSPHP have been compiled with CRIU already. ​Please check [[https://​docs.cloudlinux.com/​index.html?​criu_support.html|here]] ​  \\
 Use ''​phpinfo()''​ with parameter ''​-DWITH_CRIU''​ to check the LSPHP build. Use ''​phpinfo()''​ with parameter ''​-DWITH_CRIU''​ to check the LSPHP build.
  
-If you want to manually compile, please download LSAPI from [[https://​www.litespeedtech.com/​open-source/​litespeed-sapi/​download | here ]]+
  
 ====3. Configure the PHP environment==== ====3. Configure the PHP environment====
 
litespeed_wiki/cloudlinux/lsphp_criu_enable.1526396503.txt.gz · Last modified: 2018/05/15 15:01 by Eric Leu