Node 11 12 do keepalived nginx
node 13 14 httpd
#Install keepalived configuration yum -y install keepalived #Use yum to install nginx configuration sudo rpm -Uvh http://nginx.org/packages/centos/7/noarch/RPMS/nginx-release-centos-7-0.el7.ngx .noarch.rpm yum -y install nginx #install apache yum -y install httpd
[root@localhost ~]# cat /etc/hosts 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 192.168.83.11 centos1 192.168.83.12 centos2 192.168.83.13 centos3 192.168.83.14 centos4 建立秘钥 ssh-keygen ssh-copy-id centos2 ssh-copy-id centos3 ssh-copy-id centos4 [root@centos1 ~]# scp /etc/hosts centos2:/etc/hosts hosts 100% 246 235.3KB/s 00:00 [root@centos1 ~]# scp /etc/hosts centos3:/etc/hosts hosts 100% 246 220.2KB/s 00:00 [root@centos1 ~]# scp /etc/hosts centos4:/etc/hosts hosts
NGINX load balancing
user nginx;
worker_processes auto;
error_log /var/log/nginx/error.log notice;
pid /var/run/nginx.pid;
events {
worker_connections 1024;
}
http {
include /etc/nginx/mime.types;
default_type application/octet-stream;
log_format main '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';
access_log /var/log/nginx/access.log main;
sendfile on;
#tcp_nopush on;
keepalive_timeout 65;
#gzip on;
upstream apacheserver{
server 192.168.108.40;
server 192.168.108.50;
}
server{
listen 80;
server_name www.123.com;
location / {
proxy_pass http://apacheserver;
root html;
index index.html index.htm;
}
}
include /etc/ nginx/conf.d/*.conf; #Add above this will take effect
}
global_defs {
notification_email { # When the keepalived service goes down abnormally, multiple notification emails can be sent to
[email protected] # Recipient mailbox 1
[email protected] # Recipient mailbox 2
[email protected] # Receive Sender's mailbox 3
}
notification_email_from [email protected] #Email sender
smtp_ server 192.168.83.12 #The ip address of the main server. Mail server address
smtp_connect_timeout 30 # Timeout
router_id LVS_DEVEL # The machine ID is unique within the LAN. The LVS_DEVEL field is viewed in the /etc/hosts file; access to the host through it
}
vrrp_script chk_http_port {
script "/usr/local/src/nginx_check.sh" #Detection script storage path
interval 2 #Detection script execution interval, That is, the detection script will be automatically executed every 2s.
weight 2 #weight, if the script detection is true, the server weight will be +2
}
vrrp_instance VI_1 {
state MASTER # Specify the role of keepalived, MASTER is the master, and BACKUP is the backup. On the backup server, you need to change MASTER to BACKUP
interface ens33 # The communication port can be seen through ip addr, configure virtual_router_id according to your own machine
51 # vrrp instance id The instance id of the keepalived cluster must be consistent, that is, the virtual_router_id of the master and backup machines must have the same
priority 90 #Priority, the larger the value, the higher the priority of the request for processing. The main machine and the standby machine take different priorities, the main machine value is larger, and the backup machine >
value is smaller
advert_int 1 #heartbeat interval, the default is 1s. The keepalived multi-machine cluster detects whether the current server is still working normally through the heartbeat. If
there is no response to sending the heartbeat, the backup server will take over immediately;
authentication { #Communication password between servers
auth type PASS #Set the authentication type and password, MASTER and BACKUP must use The same password can communicate normally
auth pass 1111
}
virtual_ipaddress { # Custom virtual IP. The custom virtual ip must be set according to the real ip. For example, the real ip is 192.168.91.138, then the virtual ip can
be set to 192.168.91.139~255, and the first three numbers are consistent
192.168.83.100 #Define virtual ip (VIP), can be set more, one per line
192.168.83.200 # Define virtual ip (VIP), you can set more, one per line
}
}
test
