Ganglia Installation and deployment process

ganglia It consists of three parts gmond,gmetad、gweb.

• gmond Responsible for collecting data （ Need to carry out Monitored nodes All have to be installed ）
• gmetad Responsible for receiving gmond Data collected （ Only need Deploy Web The node of the service install ）
• gweb Responsible for showing gmetad The data of （ Only need Deploy Web The node of the service install ）

First step The installation files

1. install epel Source , The installation command is as follows （ All nodes All installed ）

yum -y install epel-release

2. install gmond（ Node collecting data install ）

yum -y install ganglia-gmond

3. download gmetad（Web Service node install ）

yum -y install ganglia-gmetad

4. download gweb（Web Service node install ）

sudo yum -y install httpd php #  Additional installation required httpd、php
sudo yum -y install ganglia-web

The second step The configuration file

1. Modify the configuration file vim /etc/httpd/conf.d/ganglia.conf

 # Ganglia monitoring system php web frontend
Alias /ganglia /usr/share/ganglia
<Location /ganglia>
 Require all granted
 #Order deny,allow
 #Deny from all
 #Allow from all
 # Allow from 127.0.0.1
 # Allow from ::1
 # Allow from .example.com
</Location>

2. Modify the configuration file /etc/ganglia/gmetad.conf

data_source “hadoop202” 192.168.88.202

3. Modify the configuration file /etc/ganglia/gmond.conf【 Here one node is configured , adopt scp Synchronize all nodes 】（ Be careful ： Focus on name,bind as well as host Configuration information ）

[[email protected] flume]$ sudo vim /etc/ganglia/gmond.conf 
 It is amended as follows ：
cluster {
    
 name = "hadoop202"  ### Name and gmetad The same in 
 owner = "unspecified"
 latlong = "unspecified"
 url = "unspecified"
}
udp_send_channel {
    
 #bind_hostname = yes # Highly recommended, soon to be default.
 # This option tells gmond to use a source address
 # that resolves to the machine's hostname. Without
 # this, the metrics may appear to come from any
 # interface and the DNS names associated with
 # those IPs will be used to create the RRDs.
 # mcast_join = 239.2.11.71
 host = 192.168.88.202 ### The node that receives the data IP Address 
 port = 8649
 ttl = 1
}
udp_recv_channel {
    
 # mcast_join = 239.2.11.71
 port = 8649
 bind = 192.168.88.202 ### Node native IP Address 
 retry_bind = true
 # Size of the UDP buffer. If you are handling lots of metrics you really
 # should bump it up to e.g. 10MB or even higher.
 # buffer = 10485760
}

4. Modify the configuration file /etc/selinux/config【 Be careful ： need restart It will take effect after 】

SELINUX=disabled #  Resolve conflicts 

The third step start-up Ganglia

systemctl start httpd.service
systemctl start gmetad.service
systemctl start gmond.service

Permission problems

1. Turn off firewall

systemctl stop firewalld

2. to grant authorization

chmod -R 777 /var/lib/ganglia