gweb是ganglia的组件之一, 前面我简单的写了一些gmond, gmetad的安装和配置.
简单来讲gmond用于采集监控数据, gmetad将采集到的监控数据写入rrd数据文件.
gweb则负责可视化工作.
要使用gweb, 首先要安装一个web容器, 这里我选择nginx. 当然你也可以选择apache, openresty等.
nginx的安装和配置参考 :
因为gweb要访问rrd数据文件, 所以一般和gmetad部署在一个地方. 如果你使用了grid模式的话, 那么gweb部署在最顶层的gmetad主机一起.
gweb是php写的, 需要安装php
首先要安装pcre
安装freetype
安装postgresql
安装php
配置并启动php-fpm
拷贝php和php-fpm的配置文件到对应的配置目录
配置php.ini
启动php-fpm
下载gweb
创建一个web目录, 放gweb目录, 并修改目录权限
配置nginx.conf
启动nginx
配置gweb conf.php
注意左下角的热度视图 :
物理视图
主机视图
节点视图, 包括节点位置rack rank plane
错误2 :
[参考]
http://www.pcre.org/
# wget ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre/pcre-8.35.tar.bz2
# tar -jxvf pcre-8.35.tar.bz2
# cd pcre-8.35
# ./configure --prefix=/opt/pcre8.35 --enable-utf8 --enable-unicode-properties --enable-pcretest-libreadline --enable-shared --enable-static --enable-jit --enable-pcre16 --enable-pcre32
# make && make install
[root@dba ~]# /opt/pcre8.35/bin/pcretest -C
PCRE version 8.35 2014-04-04
Compiled with
8-bit support
UTF-8 support
Unicode properties support
No just-in-time compiler support
Newline sequence is LF
\R matches all Unicode newlines
Internal link size = 2
POSIX malloc threshold = 10
Parentheses nest limit = 250
Default match limit = 10000000
Default recursion depth limit = 10000000
Match recursion uses stack
# vi /etc/profile
export PATH=/opt/pcre8.35/bin:$PATH
export MANPATH=/opt/pcre8.35/share/man:$MANPATH
# vi /etc/ld.so.conf
/opt/pcre8.35/lib
# ldconfig
安装freetype
# wget http://download.savannah.gnu.org/releases/freetype/freetype-2.5.3.tar.bz2
# tar -jxvf freetype-2.5.3.tar.bz2
# cd freetype-2.5.3
# ./configure --prefix=/opt/freetype2.5.3
# make && make install
# vi /etc/profile
export PATH=/opt/freetype2.5.3/bin:$PATH
export MANPATH=/opt/freetype2.5.3/share/man:$MANPATH
# vi /etc/ld.so.conf
/opt/freetype2.5.3/lib
# ldconfig安装postgresql
# useradd postgres
# tar -jxvf postgresql-9.3.5.tar.bz2
# cd postgresql-9.3.5
# ./configure --prefix=/opt/pgsql9.3.5 --with-pgport=5432 --with-perl --with-tcl --with-python --with-openssl --with-pam --with-ldap --with-libxml --with-libxslt --enable-thread-safety
# gmake world && gmake install-world
# ln -s /opt/pgsql9.3.5 /opt/pgsql
# vi /etc/profile
export PATH=/opt/pgsql/bin:$PATH
export MANPATH=/opt/pgsql/share/man:$MANPATH
# vi /etc/ld.so.conf
/opt/pgsql/lib
# ldconfig
# mkdir -p /data03/pgdata/pg_root
# chown postgres:postgres /data03/pgdata/pg_root
# su - postgres
$ vi .bash_profile
export PS1="$USER@`/bin/hostname -s`-> "
export PGPORT=5432
export PGDATA=/data03/pgdata/pg_root
export LANG=en_US.utf8
export PGHOME=/opt/pgsql
export LD_LIBRARY_PATH=$PGHOME/lib:/lib64:/usr/lib64:/usr/local/lib64:/lib:/usr/lib:/usr/local/lib:$LD_LIBRARY_PATH
export DATE=`date +"%Y%m%d%H%M"`
export PATH=$PGHOME/bin:$PATH:.
export MANPATH=$PGHOME/share/man:$MANPATH
export PGUSER=postgres
export PGHOST=$PGDATA
alias rm='rm -i'
alias ll='ls -lh'
export PGDATABASE=postgres安装php
# yum install -y libpng libpng-devel
# wget http://cn2.php.net/get/php-5.5.14.tar.bz2/from/this/mirror
# tar -jxvf php-5.5.14.tar.bz2
# cp /opt/pcre8.35/include/pcre.h /opt/pcre8.35/lib/
# cd php-5.5.14
# ./configure --prefix=/opt/php5.5.14 --with-pcre-regex=/opt/pcre8.35/lib --enable-fpm --enable-opcache --with-pdo-pgsql=/opt/pgsql/bin --with-pgsql=/opt/pgsql/bin --enable-bcmath --enable-mbstring --enable-sockets --with-gd --with-gettext --with-libdir=lib64 --with-jpeg-dir --with-png-dir --with-freetype-dir=/opt/freetype2.5.3
# make && make install
# vi /etc/profile
export PATH=/opt/php5.5.14/bin:/opt/php5.5.14/sbin:$PATH
export MANPATH=/opt/php5.5.14/php/man:$MANPATH配置并启动php-fpm
[root@150 ~]# php --ini
Configuration File (php.ini) Path: /opt/php5.5.14/lib
Loaded Configuration File: (none)
Scan for additional .ini files in: (none)
Additional .ini files parsed: (none)拷贝php和php-fpm的配置文件到对应的配置目录
# cp php-5.5.14/php.ini-production /opt/php5.5.14/lib/php.ini
# cp /opt/php5.5.14/etc/php-fpm.conf.default /opt/php5.5.14/etc/php-fpm.conf配置php.ini
# vi /opt/php5.5.14/lib/php.ini
post_max_size = 16M
date.timezone = "Asia/Shanghai"
max_execution_time = 300
max_input_time = 300启动php-fpm
[root@150 zabbix]# which php-fpm
/opt/php5.5.14/sbin/php-fpm
[root@150 zabbix]# php-fpm -R -c /opt/php5.5.14/etc
[root@150 zabbix]# netstat -anp|grep 9000
tcp 0 0 127.0.0.1:9000 0.0.0.0:* LISTEN 26627/php-fpm下载gweb
http://sourceforge.net/projects/ganglia/files/ganglia-web/
# wget http://downloads.sourceforge.net/project/ganglia/ganglia-web/3.6.2/ganglia-web-3.6.2.tar.gz?r=http%3A%2F%2Fsourceforge.net%2Fprojects%2Fganglia%2Ffiles%2Fganglia-web%2F3.6.2%2F&ts=1410420232&use_mirror=jaist
# tar -zxvf ganglia-web-3.6.2.tar.gz创建一个web目录, 放gweb目录, 并修改目录权限
# mkdir /data01/web
# mv /opt/soft_bak/ganglia-web-3.6.2 /data01/web/ganglia-web
修改权限
# chown -R nobody /data01/web/ganglia-web配置nginx.conf
# vi /opt/nginx1.6.0/conf/nginx.conf
user nobody;
worker_processes 3;
error_log logs/error.log;
pid logs/nginx.pid;
events {
worker_connections 1024;
}
http {
include mime.types;
default_type application/octet-stream;
sendfile on;
keepalive_timeout 65;
server {
listen 80;
server_name localhost;
root /data01/web/ganglia-web;
location / {
root /data01/web/ganglia-web;
index index.html index.htm index.php;
}
# redirect server error pages to the static page /50x.html
#
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root html;
}
# pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
#
location ~ \.php$ {
fastcgi_pass 127.0.0.1:9000;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
include fastcgi_params;
}
}
}启动nginx
# nginx -c /opt/nginx1.6.0/conf/nginx.conf配置gweb conf.php
# cd /data01/web/ganglia-web/
# cp conf_default.php conf.php
可能需要修改的地方如下 :
# vi conf.php
$conf['gweb_confdir'] = "/data01/web/ganglia-web";
# Where gmetad stores the rrd archives.
$conf['gmetad_root'] = "/opt/ganglia-core-3.6.0";
$conf['rrds'] = "/data01/rrd";
#
# If you want to grab data from a different ganglia source specify it here.
# Although, it would be strange to alter the IP since the Round-Robin
# databases need to be local to be read.
#
$conf['ganglia_ip'] = "127.0.0.1";
$conf['ganglia_port'] = 8652;
# Leave this alone if rrdtool is installed in $conf['gmetad_root'],
# otherwise, change it if it is installed elsewhere (like /usr/bin)
$conf['rrdtool'] = "/opt/rrdtool1.4.8/bin/rrdtool";
打开WEB页面
http://172.16.3.221
gweb视图 :
主机硬件, 软件, LOAD, CPU等场景信息.
WEB页面错误解决办法 :
错误1 :
Fatal error:
Errors were detected in your configuration.
?DWOO compiled templates directory '/data01/web/ganglia-web/dwoo/compiled' is not writeable.
Please adjust $conf['dwoo_compiled_dir'].
?DWOO cache directory '/data01/web/ganglia-web/dwoo/cache' is not writeable.
Please adjust $conf['dwoo_cache_dir'].
in /data01/web/ganglia-web/eval_conf.php on line 126
解决办法 :
[root@db-172-16-3-221 ganglia-web]# mkdir -p /data01/web/ganglia-web/dwoo/compiled
[root@db-172-16-3-221 ganglia-web]# mkdir -p /data01/web/ganglia-web/dwoo/cache
[root@db-172-16-3-221 ganglia-web]# chown -R nobody /data01/web/ganglia-web错误2 :
图片无法显示
解决办法 :
配置正确的rrdtool路径. 例如:
# vi conf.php
$conf['rrdtool'] = "/opt/rrdtool1.4.8/bin/rrdtool";[参考]
