How to Use HAProxy to Test CockroachDB
Installing HAProxy yum install haproxy is effective for CentOS 7. After installation, you can start the service using systemctl start haproxy. But don’t rush yet. Configuring HAProxy Add the following content to /etc/haproxy/haproxy.cfg. global # The content of global is generally fixed and quite understandable. log 127.0.0.1 local2 maxconn 4096 user haproxy group haproxy chroot /var/lib/haproxy daemon pidfile /var/run/haproxy.pid stats socket /var/run/haproxy.sock # Create a socket file for haproxy nbproc 40 # Start 40 processes to forward concurrently, higher versions can use nbthread, a threaded approach. defaults # This section is mostly copied, not entirely clear on the options. log global mode http option tcplog option dontlognull retries 3 option redispatch maxconn 1024 timeout connect 5000ms timeout client 50000ms timeout server 50000ms listen cdb_cluster 0.0.0.0:3030 # The actual proxy name and address for receiving services. ## cdb balance leastconn - the cluster listening on port 3030. mode tcp balance leastconn # This method is most suitable for databases; do not change. server cdb1 172.16.30.3:26257 check # Check seems to require a port for feedback status; without it, it might not work, but it doesn't matter. server cdb2 172.16.30.3:26258 check server cdb3 172.16.30.3:26259 check server cdb4 172.16.30.3:26260 check Start and Connect systemctl start haproxy to start the service. ...