ELK集中日志管理系统安装部署
一、简介1.ELK介绍
ELK Stack 是 Elasticsearch、Logstash、Kibana 三个开源软件的组合。在实时数据检索和分析场合，三者通常是配合共用，而且又都先后归于 Elastic.co 公司名下，故有此简称。
ELK Stack 在最近两年迅速崛起，成为机器数据分析，或者说实时日志处理领域，开源界的第一选择。
ELK由三个组建构成：
[*] Elasticsearch，负责数据的索引和存储
[*] Logstash ，负责日志的采集和格式化
[*] Kibana，负责前端统计的展示
大致的架构如下：
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二、logstansh安装
1.同步时间
# yum install -y ntpdate
# echo '*/5 * * * * * /usr/sbin/ntpdate us.pool.ntp.org'>> /var/spool/cron/root
2.JDK安装
#yum install -y java-1.8.0
# java -version
openjdk version "1.8.0_101"
OpenJDK Runtime Environment (build 1.8.0_101-b13)
OpenJDK 64-Bit Server VM (build 25.101-b13, mixed mode)
3.logstansh安装
# wget https://download.elastic.co/logstash/logstash/logstash-2.3.4.tar.gz
# tar xf logstash-2.3.4.tar.gz
# mv logstash-2.3.4 /usr/local/
# echo "PATH=$PATH:/usr/local/logstash-2.3.4/bin" >> /etc/profile
# source /etc/profile
4.新建 logstansh配置文件目录
# mkdir /usr/local/logstash-2.3.4/conf 5.测试logstansh
# logstash -e "input {stdin{}} output {stdout{}}"
Settings: Default pipeline workers: 4
Pipeline main started
三、Redis安装
1.redis安装
# wget http://download.redis.io/releases/redis-2.8.20.tar.gz
# yum install tcl gcc gcc-c++ -y
# tar xf redis-2.8.20.tar.gz
# mv redis-2.8.20 /usr/local/
# cd /usr/local/redis-2.8.20/
# make MALLOC=libc
# make install
# cd utils/
# ./install_server.sh #选项默认，一直回车
2.查看redis的监控端口
# netstat -tnlup | grep redis
tcp 0 0 0.0.0.0:6379 0.0.0.0:* LISTEN 3015/redis-server *
tcp 0 0 :::6379 :::* LISTEN 3015/redis-server *
3.测试redis是否缓存数据
a.新建logstansh配置文件如下
# cat /usr/local/logstash-2.3.4/conf/output_redis.conf
input { stdin { } } #手动输入数据
output {
stdout { codec => rubydebug }#页面debug信息
redis {
host => '127.0.0.1'
data_type => 'list'
key => 'redis'
}
}
4.启动logstansh
#logstash -f /usr/local/logstash-2.3.4/conf/output_redis.conf --verbose
5.查看redis中是否有数据
# cd /usr/local/redis-2.8.20/src/
# ls
adlist.c crc64.o lzfP.h rdb.o rio.o t_hash.o
adlist.h db.c Makefile redisassert.h scripting.c t_list.c
adlist.o db.o Makefile.dep redis-benchmark scripting.o t_list.o
四、elasticsearch安装
1.elasticsearch安装
# wget https://download.elastic.co/elasticsearch/release/org/elasticsearch/distribution/zip/elasticsearch/2.3.4/elasticsearch-2.3.4.zip
# unzip elasticsearch-2.3.4.zip
# mv elasticsearch-2.3.4 /usr/local/
修改elasticsearch配置文件
# vim /usr/local/elasticsearch-2.3.4/config/elasticsearch.yml
把下面参数的注释去掉并改成服务器IP。这里只做简单安装，优化及集群后面再介绍
network.host： 192.168.16.177
2.elasticsearch启动
# useradd elk
# su elk
$ chown -R elk.root /usr/local/elasticsearch-2.3.4/
$/usr/local/elasticsearch-2.3.4/bin/elasticsearch-d
查看是否启动
$ netstat -tnlup | grep java
(Not all processes could be identified, non-owned process info
will not be shown, you would have to be root to see it all.)
tcp 0 0 ::ffff:192.168.16.177:9200:::* LISTEN 2192/java
tcp 0 0 ::ffff:192.168.16.177:9300:::* LISTEN 2192/java
3、测试logstansh和elasticsearch是否能结合使用
新建logstansh配置文件elasticsearch.conf
# cat /usr/local/logstash-2.3.4/conf/elasticsearch.conf
input { stdin {} } #手动输入
output {
elasticsearch { hosts => "192.168.16.177" }
stdout { codec=> rubydebug } #页面debug信息
}
启动elasticsearch.conf配置文件
#logstash -f/usr/local/logstash-2.3.4/conf/elasticsearch.conf --verbose
查看elasticsearch是否获取到了"hello elasticsearch"
# curl http://192.168.16.177:9200/_search?pretty
{
"took" : 1,
"timed_out" : false,
"_shards" : {
"total" : 0,
"successful" : 0,
"failed" : 0
},
"hits" : {
"total" : 0,
"max_score" : 0.0,
"hits" : [ ]
}
}
4、安装elasticsearch插件
elasticsearch有很多插件：http://www.searchtech.pro/elasticsearch-plugins
elasticsearch-head插件安装，若无法下载请至github下载，解压至/usr/local/elasticsearch-2.3.4/plugins/head目录中
# cd /usr/local/elasticsearch-2.3.4/bin/
# ./plugin install mobz/elasticsearch-head
# wget https://www.elastic.co/downloads/past-releases/kibana-4-5-2
# tar xf kibana-4.5.2-linux-x64.tar.gz
# mv kibana-4.5.2-linux-x64 /usr/local/
# vim /usr/local/kibana-4.5.2-linux-x64/config/kibana.yml
修改kibana配置文件，把下面这行改成elasticsearc的访问路径
elasticsearch.url: "http://192.168.16.177:9200"
#sh /usr/local/kibana-4.5.2-linux-x64/bin/kibana &
六、配置客户端传输日志到ELK（本机测试）
1.server端的logstash.conf的配置
vim/usr/local/logstash-2.3.4/conf/redis_elasticserach.conf
input {
redis {
host => '192.168.16.177'
data_type => 'list'
port => "6379"
key => 'logstash:syslog_log'
type => 'redis-input'
}
}
output {
elasticsearch {
hosts => "192.168.16.177"
index => "logstash-%{+YYYY.MM.dd}"
}
}
2.client端的logstash.conf的配置
vim/usr/local/logstash-2.3.4/conf/logstash_redis.conf
input {
file {
path => "/var/log/messages"
start_position => beginning
sincedb_write_interval => 0
add_field => {"Host"=>"192.168.16.177"}
type => "SYSLOG_LOG"
}
}
output {
redis {
host => "192.168.16.177:6379"
data_type => "list"
key => "logstash:syslog_log"
}
}
七、启动ELK各项服务
logstash -f/usr/local/logstash-2.3.4/conf/logstash_redis.conf &
logstash -f /usr/local/logstash-2.3.4/conf/redis_elasticserach.conf&
/usr/local/elasticsearch-2.3.4/bin/elasticsearch-d#elk用户启动
/usr/local/kibana-4.5.2-linux-x64/bin/kibana &
八、查看
http://192.168.16.177:9200/_plugin/head/点击数据浏览
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http://192.168.16.177:5601/ 点击Discover
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九、配置客户端传输日志到ELK
1.server端创建证书
# cd /etc/pki/tls/
# openssl req -subj '/CN=www.elk.com/' -x509 -days 3650 -batch -nodes -newkey rsa:2048 -keyout private/logstash-forwarder.key -out certs/logstash-forwarder.crt
# scp certs/logstash-forwarder.crt 192.168.16.188:/etc/pki/tls/certs/
#在将logstash-forwarder.crt拷贝到client端
2.创建server端logstash.conf配置
echo "192.168.16.177 www.elk.com">> /etc/hosts
vim /usr/local/logstash-2.3.4/conf/logstash.conf
input {
file {
type => "syslog"
path => [ "/var/log/pacloud/pacloud.log" ]
}
lumberjack {
port => 5000
type => "logs"
ssl_certificate => "/etc/pki/tls/certs/logstash-forwarder.crt"
ssl_key => "/etc/pki/tls/private/logstash-forwarder.key"
}
}
output {
stdout { codec=> rubydebug }
elasticsearch {hosts => "192.168.16.177:9200" }
}
3.客户端安装
# wget https://download.elastic.co/logstash-forwarder/binaries/logstash-forwarder-0.4.0-1.x86_64.rpm
# yum localinstall -y logstash-forwarder-0.4.0-1.x86_64.rpm
#注意两个配置文件：
配置文件 /etc/logstash-forwarder.conf
日志目录 /var/log/logstash-forwarder
# cp /etc/logstash-forwarder.conf/etc/logstash-forwarder.conf.bak
# echo "192.168.16.177 www.elk.com">> /etc/hosts
# > /etc/logstash-forwarder.conf
# vim /etc/logstash-forwarder.conf
{
"network": {
"servers": [ "www.elk.com:5000" ],
"ssl ca": "/etc/pki/tls/certs/logstash-forwarder.crt",
"timeout": 15
},
"files": [
{
"paths": [
"/var/log/pacloud/pacloud.log"
],
"fields": { "type": "syslog" }
}, {
"paths": [
"其他路径的文件"
],
"fields": { "type": "pacloud" }
}
]
}
注意：
一定要写域名，不能写server端的IP，因为写IP不能通过证书的认知
"ssl ca" 一定要正确写明路径
5.启动测试
服务端启动
logstash -f /usr/local/logstash-2.3.4/conf/logstash.conf&
/usr/local/elasticsearch-2.3.4/bin/elasticsearch-d#elk用户启动
/usr/local/kibana-4.5.2-linux-x64/bin/kibana&
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