Monthly Archives: October 2019

音视频

海康威视RTSP流地址

RTSP流格式

rtsp://[username]:[password]@[ip]:[port]/[codec]/[channel]/[subtype]/av_stream

说明:

参数 说明 示例
username 用户名 如admin
password 密码 123456
ip 设备IP 192.168.1.1
port 端口号,默认为554,不填写默认 554
codec 编码 h264,MPEG-4,mpeg4等
channel 通道号,起始为1,通道1则为ch1 ch1
subtype 码流类型,主码流为main,辅码流为sub main

推流

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# ffmpeg -i "rtsp://username:passport@192.168.1.1:554/h264/ch1/sub/av_stream" -vcodec copy -preset:v ultrafast -tune:v zerolatency -acodec copy -f flv  -an "rtmp://192.168.1.1/live/haikang_01"
ffmpeg version 4.2.1 Copyright (c) 2000-2019 the FFmpeg developers
  built with Apple clang version 11.0.0 (clang-1100.0.33.8)
音视频

流媒体服务器nginx-rtmp安装

下载源代码

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# git clone git@github.com:arut/nginx-rtmp-module.git
git clone git@github.com:winshining/nginx-http-flv-module.git
axel -n 100 http://nginx.org/download/nginx-1.17.5.tar.gz

安装依赖

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## ubintu
sudo apt-get install openssl libssl-dev
sudo apt-get install libpcre3 libpcre3-dev
sudo apt-get install zlib1g-dev
 
## centos
sudo yum install -y pcre pcre-devel
sudo yum install -y openssl openssl-devel
sudo yum install -y zlib-devel zlib

编译安装

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tar zxvf nginx-1.17.5.tar.gz
cd nginx-1.17.5/
 ./configure --prefix=/usr/local/nginx --add-module=/home/work/nginx-http-flv-module --with-http_ssl_module --with-debug

配置nginx用户

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sudo useradd nginx
## sudo vim /etc/passwd
## nginx:x:1001:1001:,,,:/home/nginx:/usr/sbin/nologin

创建相关用户

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# 创建相关目录并修改所有者
sudo mkdir -p /usr/local/nginx/data/dash/live
sudo mkdir -p /usr/local/nginx/data/hls/live
sudo mkdir -p /usr/local/nginx/stat
sudo cp /home/work/nginx-http-flv-module/stat.xsl /usr/local/nginx/stat/
 
sudo chown -R nginx /usr/local/nginx/data
sudo chown -R nginx /usr/local/nginx/stat

修改配置文件

见附录:示例

启动nginx服务器

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 .
 
sudo /usr/local/nginx/sbin/nginx

测试

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.
 
# 推流
ffmpeg -re -i /Applications/ambari-vagrant/ubuntu18.4/data/fulankelin-hd.mp4 -c copy -f flv rtmp://u1802/live/fulankelin-hd
 
# 支持播放地址
rtmp://u1802/live/fulankelin-hd
 
http://u1802/live?app=live&stream=fulankelin-hd
http://u1802/live?port=1935&app=live&stream=fulankelin-hd
http://u1802/live/fulankelin-hd.flv
http://u1802/live/fulankelin-hd.flv?port=1935
 
http://u1802/live/fulankelin-hd.mpd
http://u1802/live/fulankelin-hd.m3u8
 
.

配置示例

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user  nginx;
worker_processes  1;
 
 
# error_log  logs/error.log;
# error_log  logs/error.log  notice;
error_log  logs/error.log  debug;
 
pid        logs/nginx.pid;
 
 
events {
    worker_connections  4096;
}
 
http {
    include       mime.types;
    default_type  application/octet-stream;
 
    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';
 
    access_log  logs/access.log  main;
 
    sendfile        on;
    #tcp_nopush     on;
 
    #keepalive_timeout  0;
    keepalive_timeout  65;
 
    #gzip  on;
 
    server {
        listen       80;
        server_name  localhost;
 
        #charset koi8-r;
 
        #access_log  logs/host.access.log  main;
 
        location / {
            root   html;
            index  index.html index.htm;
        }
 
        #error_page  404              /404.html;
 
        # redirect server error pages to the static page /50x.html
        #
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }
 
        # location ~* \.(m3u8)$ {
        #     types {
        #         application/vnd.apple.mpegurl m3u8;
        #         video/mp2t ts;
        #     }
 
        #     root /usr/local/nginx/data;
        #     add_header 'Cache-Control' 'no-cache';
        # }
        location /live {
            flv_live on; # 打开http播放flv直播流的方式
            chunked_transfer_encoding on; # 支持Transfer-Encoding: chunked方式回复
 
            add_header 'Access-Control-Allow-Origin' '*';
            add_header 'Access-Control-Allow-Credentials' 'true';
        }
 
        location ~ \.(mpd|m4a|m4v)$ {
            root /usr/local/nginx/data/dash/;
            add_header 'Cache-Control' 'no-cache';
        }
        # }
        location ~ \.(m3u8|ts)$ {
            types {
                application/vnd.apple.mpegurl m3u8;
                video/mp2t ts;
            }
 
            root /usr/local/nginx/data/hls/;
            add_header 'Cache-Control' 'no-cache';
        }
 
        location ~ \.(flv)$ {
            rewrite ^/(.*)/(.*)\.(flv)$ /$1?app=$1&stream=$2 last;
        }
 
        location /stat {
            rtmp_stat all;
            rtmp_stat_stylesheet stat.xsl;
        }
        location /stat.xsl {
            root /usr/local/nginx/stat/;
        }
 
        # proxy the PHP scripts to Apache listening on 127.0.0.1:80
        #
        #location ~ \.php$ {
        #    proxy_pass   http://127.0.0.1;
        #}
 
        # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
        #
        #location ~ \.php$ {
        #    root           html;
        #    fastcgi_pass   127.0.0.1:9000;
        #    fastcgi_index  index.php;
        #    fastcgi_param  SCRIPT_FILENAME  /scripts$fastcgi_script_name;
        #    include        fastcgi_params;
        #}
 
        # deny access to .htaccess files, if Apache's document root
        # concurs with nginx's one
        #
        #location ~ /\.ht {
        #    deny  all;
        #}
    }
 
 
    # another virtual host using mix of IP-, name-, and port-based configuration
    #
    #server {
    #    listen       8000;
    #    listen       somename:8080;
    #    server_name  somename  alias  another.alias;
 
    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}
 
 
    # HTTPS server
    #
    #server {
    #    listen       443 ssl;
    #    server_name  localhost;
 
    #    ssl_certificate      cert.pem;
    #    ssl_certificate_key  cert.key;
 
    #    ssl_session_cache    shared:SSL:1m;
    #    ssl_session_timeout  5m;
 
    #    ssl_ciphers  HIGH:!aNULL:!MD5;
    #    ssl_prefer_server_ciphers  on;
 
    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}
 
}
 
rtmp_auto_push on;
rtmp_auto_push_reconnect 1s;
rtmp_socket_dir /tmp;
 
rtmp {
    out_queue           4096;
    out_cork            8;
    max_streams         128;
    timeout             15s;
    drop_idle_publisher 15s;
 
    log_interval 5s; #log模块在access.log中记录日志的间隔时间,对调试非常有用
    log_size     1m; #log模块用来记录日志的缓冲区大小
 
    server {
        listen 1935;
        on_connect http://127.0.0.1:3000/on_connect;
 
        application live {
            live on;
            hls on;
            hls_path /usr/local/nginx/data/hls/live;
            dash on;
            dash_path /usr/local/nginx/data/dash/live;
            gop_cache on; #打开GOP缓存,减少首屏等待时间
 
            notify_update_timeout 30s;
            notify_relay_redirect off; # 启用本地流重定向on_play和on_publish远程重定向。新的流名称是用于远程重定向的RTMP URL的MD5哈希。默认为关闭。
            notify_update_strict off; # 切换on_update回调的严格模式。默认为关闭。打开所有连接错误后,超时以及HTTP解析错误和空响应均被视为更新失败并导致连接终止。
            notify_method get;
 
            on_play http://127.0.0.1:3000/on_play;
            on_publish http://127.0.0.1:3000/on_publish;
            on_done http://127.0.0.1:3000/on_done;
            on_play_done http://127.0.0.1:3000/on_play_done;
            on_publish_done http://127.0.0.1:3000/on_publish_done;
            on_record_done http://127.0.0.1:3000/on_record_done;
            on_update http://127.0.0.1:3000/on_update;
 
        }
    }
}

问题处理

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启动报错
nginx: [warn] 4096 worker_connections exceed open file resource limit: 1024
 
# ulimit -n 65535
 
vim /etc/security/limits.conf
* soft nofile 65535
* hard nofile 65535
 
vim /etc/sysctl.conf 
fs.file-max = 6553560
ElaticSearch

elasticsearch增加磁盘

基于EasticSearch-6.2.4

检查系统状态

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curl -XGET "http://192.168.1.1:9002/_cat/indices"
curl -XGET "http://192.168.1.1:9002/_cat/nodes"
curl -XGET "http://192.168.1.1:9002/_cat/health"

修改配置文件,增加数据目录,多个以逗号分隔

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# vim config/elasticsearch.yml
path.data: /data2/es/data,/data1/es/data

检查系统状态

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curl -XGET "http://192.168.1.1:9002/_cat/indices"
curl -XGET "http://192.168.1.1:9002/_cat/nodes"
curl -XGET "http://192.168.1.1:9002/_cat/health"

为避免节点重启造成分片重新自动分配,需要设置集群中分片不自动分配

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curl -X PUT \
  http://192.168.1.1:9002/_cluster/settings \
  -H 'Content-Type: application/json; charset=UTF-8' \
  -H 'cache-control: no-cache' \
  -d '{
  "transient" : {
      "cluster.routing.allocation.enable" : "none"
  }
}'

关闭节点

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jps -l
kill xxxx

启动服务

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./bin/elasticsearch -d

开启分片自动分配

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curl -X PUT \
  http://192.168.1.1:9002/_cluster/settings \
  -H 'Content-Type: application/json; charset=UTF-8' \
  -H 'cache-control: no-cache' \
  -d '{
  "transient": {
    "cluster.routing.allocation.enable": "all"
  }
}'

查看分片及索引状态

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# 查看未分配分片数
curl -XGET 'http://192.168.1.1:9002/_cat/shards' | grep UNASSIGNED   #查看未分配的索引分片
curl -XGET "http://192.168.1.1:9002/_cat/shards/lbs_geocoder_4307?v" #查看索引分片
curl -XGET "http://192.168.1.1:9002/_cat/shards?v"
curl -XGET "http://192.168.1.1:9002/_cat/shards?v" |grep UNASSIGNED |wc -l

当没有未分配分片时,检查系统状态

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curl -XGET "http://192.168.1.1:9002/_cat/indices"
curl -XGET "http://192.168.1.1:9002/_cat/nodes"
curl -XGET "http://192.168.1.1:9002/_cat/health"

因为负载过高等原因,有时候个别分片可能长期处于 UNASSIGNED 状态时,可以手动进行分配;reroute 接口支持五种指令:allocate_replica, allocate_stale_primary, allocate_empty_primary,move 和 cancel;默认情况下只允许手动分配副本分片(即使用 allocate_replica),所以如果要分配主分片,需要单独加一个 accept_data_loss 选项

分配主分片

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curl -X PUT \
  http://192.168.1.1:9002/_cluster/reroute \
  -H 'Content-Type: application/json; charset=UTF-8' \
  -H 'cache-control: no-cache' \
  -d '{
  "commands" : [ {
        "allocate_stale_primary" :
            {
              "index" : "index", "shard" : 4, "node" : "node56", "accept_data_loss" : true
            }
        }
  ]
}'

分配副本

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curl -X PUT \
  http://192.168.1.1:9002/_cluster/reroute \
  -H 'Content-Type: application/json; charset=UTF-8' \
  -H 'cache-control: no-cache' \
  -d '{
  "commands" : [ {
        "allocate_replica" :
            {
              "index" : "index", "shard" : 4, "node" : "node56"
            }
        }
  ]
}'

磁盘空间不足报 [FORBIDDEN/12/index read-only / allow delete (api)] 错误后,进行增加磁盘操作或删除无用旧索引数据,完成操作需要修改索引的状态,ES不会主动更新,命令为:

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PUT _settings { "index":{ "blocks":{ "read_only_allow_delete":"false" } } }

磁盘扩容后,可能需要修改报警的设置,默认值会在 85% 90% 95%的磁盘空间时报警

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PUT /_cluster/settings
{
  "transient": {
    "cluster.routing.allocation.disk.threshold_enabled" : true,
    "cluster.routing.allocation.disk.watermark.low": "80gb",
    "cluster.routing.allocation.disk.watermark.high": "40gb",
    "cluster.routing.allocation.disk.watermark.flood_stage":"20gb",
    "cluster.info.update.interval" : "1m"
  }
}