ceph storage cluster

,command_nginx_zhushi) If INT (Result) = = 0:NEW_DST = "' S/server%s/#/'"%ip dst = ["sed", "-I", new_ DST, "/etc/nginx/conf.d/panda.saicmotor.com.conf"] command_nginx_apache_stop = "". Join (DST) New_command = ["sudo su-c", ' "', Command_nginx_apache_stop, '" ', "-"] new_command_spli t = "". Join (New_command) Apache_connect_perform (ip_nginx,new_command_split) Time.sleep (2) apache_connect_perform (ip_nginx,command_nginx_reloa

This is my own chat record in the FASTDFS Technical Group about the overall migration of the cluster 0.618 (873085561) 11:10:34Have you ever done Fastdfs file server data migration? Dragon (263209498) 11:11:08Fastdfs the problem of the whole migration of cluster. If the new and old IP address one by one corresponds, and is the same, it is very simple, directly copy the data directory to the past.IP is not

) this.width=650; "Src=" Https://s2.51cto.com/oss/201710/24/0969eea1d110e51344b937d95483094d.png-wh_500x0-wm_3 -wmp_4-s_3903013654.png "title=" Tim20171024143417.png "alt=" 0969eea1d110e51344b937d95483094d.png-wh_ "/>Activeconn is the number of connections currently in effect, you can see that when we refresh the page, the number of the two servers to switch back and forth, but such a switch back and forth will cause some problems, so we can add a delay option, Having an IP access to the schedul

,command_nginx_zhushi) If INT (Result) = = 0:NEW_DST = "' S/server%s/#/'"%ip dst = ["sed", "-I", new_ DST, "/etc/nginx/conf.d/panda.saicmotor.com.conf"] command_nginx_apache_stop = "". Join (DST) New_command = ["sudo su-c", ' "', Command_nginx_apache_stop, '" ', "-"] new_command_spli t = "". Join (New_command) Apache_connect_perform (ip_nginx,new_command_split) Time.sleep (2) apache_connect_perform (ip_nginx,command_nginx_reloa

: Command_nginx_zhushi = "grep%s/etc/nginx/conf.d/panda.saicmotor.com.conf|grep ' # ' |wc-l"%ip ApacHe_connect_perform (Ip_nginx1,command_nginx_zhushi) if int (result) = = 0: NEW_DST = "' S/server%s/#/'"%ip dst = ["sed", "-I", NEW_DST, "/etc/nginx/conf.d/panda . saicmotor.com.conf "] Command_nginx_apache_stop =" ". Join (DST) New_command = ["sudo su-c", ' "', Command_nginx_apache_stop, '" ', "-"] New_command_split = "". Join (New_comm

The IO path is the data channel of the storage system, the inlet and outlet have the controllable valve mechanism, sometimes the entrance is also the exit, especially in the distributed cluster the problem of the brain fissure needs its support. Related points in the kernel 1. Freeze function of the file system VFS layer; 2.DM especially MP This block has the queue suspend function; This block can ef