docker 日志监控 docker日志查看

转载

勇往直前的巨人 2023-08-22 17:29:31

文章标签 docker 日志监控运维 json java docker 文章分类 Docker 云计算

由于docker官方的推荐，我们本次讲解是fluentd日志收集组件。

具体使用如下：

安装ES

1. 初始化环境

[root@salt-node1 src]# vim /etc/sysctl.conf
vm.max_map_count = 290000

[root@salt-node1 src]#vim/etc/security/limits.conf 
*        hard  nproc           20000
*        soft  nproc           20000
*        soft  nofile          290000
*        hard  nofile          290000
 
[root@salt-node1 src]# cat /etc/security/limits.d/20-nproc.conf
# Default limit for number of user's processes to prevent
# accidental fork bombs.
# See rhbz #432903 for reasoning.
 
*          soft    nproc    290000
root       soft   nproc     unlimited
 
[root@salt-node1 src]# sysctl -p
net.ipv4.ip_forward = 1
vm.max_map_count = 290000
[root@salt-node1 src]# su - java
Last login: Sat Mar 18 00:40:54 CST 2017 on pts/1

查看参数是否生效
[java@salt-node1 ~]$ ulimit -n
290000

2.下载elasticsearch安装包并安装

[root@salt-node1 src]# wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-5.2.2.tar.gz
[root@salt-node1 src]# tar zxf elasticsearch-5.2.2.tar.gz && mv elasticsearch-5.2.2 /usr/local/elasticsearch
cluster.name: docker_log
network.host: 0.0.0.0
[root@salt-node1 local]# useradd java
[root@salt-node1 local]# chown -R java:java elasticsearch
[java@salt-node1 ~]$ nohup  /usr/local/elasticsearch/bin/elasticsearch &
[java@salt-node1 elasticsearch]$ curl localhost:9200
{
  "name" : "t3_jC3D",
  "cluster_name" : "elasticsearch",
  "cluster_uuid" : "ylQzD_hERziK29YF6O5bYg",
  "version" : {
    "number" : "5.2.2",
    "build_hash" : "f9d9b74",
    "build_date" : "2017-02-24T17:26:45.835Z",
    "build_snapshot" : false,
    "lucene_version" : "6.4.1"
  },
  "tagline" : "You Know, for Search"
}

安装fluentd

下载安装
下面是监听本机24224端口收到日志，转发到192.168.199.116节点的ES上，索引名为docker_YYYY_mm

rpm -ivh http://packages.treasuredata.com.s3.amazonaws.com/2/redhat/7/x86_64/td-agent-2.1.3-0.x86_64.rpm
 
[root@salt-node1 elasticsearch]# chown 777 /var/log/messages
[root@salt-node1 elasticsearch]# cat /etc/td-agent/td-agent.conf
<source>
  type forward
  bind 0.0.0.0
  port 24224
  linger_timeout 0
  log_level info
</source>

#下面的filter会把所有标签为docker开头的日志里面的log字段进行单独解析，且这些日志的格式都为json
 <filter docker.**>
  @type parser
  format json
  key_name log
</filter>


<match docker.**>
  type elasticsearch
  host 192.168.198.116
  port 9200
  logstash_format true
  logstash_prefix docker
  logstash_dateformat %Y_%m
  index_name docker_log
  flush_interval 5s
  type_name docker
  include_tag_key true
</match>

2. 启动fluentd服务

systemctl start td-agent

启动容器

1.首先修改nginx的日志格式为json

log_format  main  '{"remote_addr": "$remote_addr", "remote_user": "$remote_user","time_local": "$time_local","request": "$request", '
                      '"status": "$status", "body_bytes_sent":"$body_bytes_sent","http_referer": "$http_referer" ,'
                      '"http_user_agent": "$http_user_agent", "http_x_forwarded_for":"$http_x_forwarded_for"}';

2.启动容器

使用docker内置的日志驱动把日志传出给fluentd

docker run -dit -p 8080:80\
             -v /test/nginx.conf:/etc/nginx/nginx.conf \
             --log-driver=fluentd \
             --log-opt fluentd-address=localhost:24224 \
             --log-opt tag="docker.``.`Name`" \
             nginx
#测试docker访问正常             
[root@test-node3 ~]# curl localhost:8080
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
    body {
        width: 35em;
        margin: 0 auto;
        font-family: Tahoma, Verdana, Arial, sans-serif;
    }
</style>
</head>
<body>
<h1>Welcome to nginx!</h1>
<p>If you see this page, the nginx web server is successfully installed and
working. Further configuration is required.</p>

<p>For online documentation and support please refer to
<a href="http://nginx.org/">nginx.org</a>.<br/>
Commercial support is available at
<a href="http://nginx.com/">nginx.com</a>.</p>

<p><em>Thank you for using nginx.</em></p>
</body>
</html>

安装kibana

下载kibana

wget https://artifacts.elastic.co/downloads/kibana/kibana-5.2.2-linux-x86_64.tar.gz

[root@salt-node1 src]# tar zxf kibana-5.2.2-linux-x86_64.tar.gz 
[root@salt-node1 src]# mv kibana-5.2.2-linux-x86_64 /usr/local/kibana
[root@salt-node1 src]# cd /usr/local/kibana/
[root@salt-node1 kibana]# vim config/kibana.yml 
server.host: "192.168.198.116"
elasticsearch.url: "http://localhost:9200"

启动kibana

[root@salt-node1 kibana]# ./bin/kibana
  log   [17:06:42.720] [info][status][plugin:kibana@5.2.2] Status changed from uninitialized to green - Ready
  log   [17:06:42.831] [info][status][plugin:elasticsearch@5.2.2] Status changed from uninitialized to yellow - Waiting for Elasticsearch
  log   [17:06:42.877] [info][status][plugin:console@5.2.2] Status changed from uninitialized to green - Ready
  log   [17:06:42.970] [info][status][plugin:elasticsearch@5.2.2] Status changed from yellow to green - Kibana index ready
  log   [17:06:43.551] [info][status][plugin:timelion@5.2.2] Status changed from uninitialized to green - Ready
  log   [17:06:43.559] [info][listening] Server running at http://192.168.198.116:5601
  log   [17:06:43.562] [info][status][ui settings] Status changed from uninitialized to green - Ready

现在对web页面索引搜索进行配置

添加索引