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munin + nginx：没有动态缩放到图表

tag-icon • tag-icon nginx fastcgi munin
munin + nginx：没有动态缩放到图表

我无法让 Munin 动态缩放功能正常工作。我确信问题与 Nginx 配置有关。任何生成缩放图的尝试都会在 nginx 日志中触发以下错误条目：

2015/02/22 13:26:01 [error] 4782#0: *2580 open() "/data/munin/usr/share/munin/cgi/munin-cgi-graph/bellaria/antergos1.bellaria/diskstats_latency/AntergosVG_AntergosRoot-pinpoint=1421756527,1424607727.png" failed (2: No such file or directory), client: 10.10.10.25, server: munin, request: "GET /usr/share/munin/cgi/munin-cgi-graph/bellaria/antergos1.bellaria/diskstats_latency/AntergosVG_AntergosRoot-pinpoint=1421756527,1424607727.png?&lower_limit=&upper_limit=&size_x=800&size_y=400 HTTP/1.1", host: "munin.bellaria", referrer: "http://munin.bellaria/static/dynazoom.html?cgiurl_graph=/usr/share/munin/cgi/munin-cgi-graph&plugin_name=bellaria/antergos1.bellaria/diskstats_latency/AntergosVG_AntergosRoot&size_x=800&size_y=400&start_epoch=1421756527&stop_epoch=1424607727"

具体来说，我怀疑 fastCGI 参数有问题。有没有人能帮我看一下我的 Munin 虚拟服务器（见下文）并向我解释一下哪里出了问题？这简直让我抓狂 - 但我有预感任何专家都能在几分之一秒内找出问题所在...

# Munin server
server {
       listen 80;
    server_name munin munin.bellaria;
    root /data/munin;
    allow all;
    access_log logs/munin.access.log;
    error_log logs/munin.error.log;

    location / {
        index index.html index.htm index.php;
        }

    location ~ \.(php|html|html|cgi)$ {
        fastcgi_pass   unix:/run/php-fpm/php-fpm.sock;
        fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;
        fastcgi_param   AUTH_USER $remote_user;
        fastcgi_param   REMOTE_USER $remote_user;
        fastcgi_param   SCRIPT_FILENAME    $document_root$fastcgi_script_name;
        fastcgi_index  index.php;
        include        fastcgi.conf;
        }


location ^~ /cgi-bin/munin-cgi-graph/ {
    access_log off;
    fastcgi_split_path_info ^(/cgi-bin/munin-cgi-graph)(.*);
    fastcgi_param PATH_INFO $fastcgi_path_info;
    fastcgi_pass unix:/var/run/munin/fcgi-graph.sock;
    include fastcgi_params;
    }

   }

答案1

我在寻找问题解决方案时发现了这个，真是个好消息！我解决了我的问题。我希望这也能帮助你让 munin 在你的设置上工作。

要求：

  • spawnfcgi：

    1. 从 https://github.com/lighttpd/spawn-fcgi 克隆或下载 zip
    2. 准备：
      自动重新配置-v-i
    3. 编译并安装：
      ./配置&& 制作&& sudo 制作安装

  • 初始化脚本（我不做 systemd 所以弄清楚如何创建服务）：

    /bin/sh #!/bin/sh
### 开始初始化信息
# 提供：munin-fastcgi
# 必需启动：$remote_fs $network
# 必需停止：$remote_fs $network
# 默认开始: 2 3 4 5
# 默认停止: 0 1 6
# 简短描述：启动 munin-fastcgi
# 描述：生成 Munin FCGI 套接字以进行 Web 访问
### 结束初始化信息

#
# munin-fastcgi Munin CGI 服务的启动脚本
#
# chkconfig: - 84 15
#描述：使用 spawn-cgi 加载 Munin CGI 服务
# HTML 文件和 CGI​​。
#
# 作者：Ryan Norbauer
# 修改：Geoffrey Grosenbach http://topfunky.com
# 修改：David Krmpotic http://davidhq.com
#修改：坤熙 http://kunxi.org
# 修改于：http://drumcoder.co.uk/
# 修改于：http://uname.pingveno.net/
# 修改：the_architecht http://iwbyt.com/
PATH=/usr/local/bin/:/usr/local/sbin:$PATH
DAEMON=$(生成-fcgi)
FCGI_GRAPH_SOCK=/var/运行/munin/fastcgi-munin-graph.sock
FCGI_HTML_SOCK=/var/运行/munin/fastcgi-munin-html.sock
WWW_USER=www-数据
FCGI_USER=www-数据
FCGI_GROUP=www-数据
FCGI_SPAWN_GRAPH=/usr/lib/munin/cgi/munin-cgi-graph
FCGI_SPAWN_HTML=/usr/lib/munin/cgi/munin-cgi-html
PIDFILE_GRAPH = /var/运行/munin/fastcgi-munin-graph.pid
PIDFILE_HTML = / var /运行/ munin / fastcgi-munin-html.pid
DESC="Munin FCGI 用于图形和 HTML"

# 如果软件包已被删除，则正常退出。
测试 -x $DAEMON || 退出 0
测试 -x $FCGI_SPAWN_GRAPH || 退出 0
测试 -x $FCGI_SPAWN_HTML || 退出 0

开始（） {
  $DAEMON -s $FCGI_GRAPH_SOCK -U $WWW_USER -u $FCGI_USER -g $FCGI_GROUP -P $PIDFILE_GRAPH $FCGI_SPAWN_GRAPH 2> /dev/null || echo "图表已运行"
  $DAEMON -s $FCGI_HTML_SOCK -U $WWW_USER -u $FCGI_USER -g $FCGI_GROUP -P $PIDFILE_HTML $FCGI_SPAWN_HTML 2> /dev/null || echo "HTML 已运行"
}

停止（） {
  kill -QUIT `cat $PIDFILE_GRAPH` || echo "图表未运行"
  kill -QUIT `cat $PIDFILE_HTML` || echo "HTML 未运行"
}

重新开始（） {
  kill -HUP `cat $PIDFILE_GRAPH` || echo "无法重新加载图表"
  kill -HUP `cat $PIDFILE_HTML` || echo "无法重新加载 HTML"
}

案例“$1”
  开始）
    echo "起始 $DESC: "
    开始
  ；；
  停止）
    echo "停止 $DESC: "
    停止
  ；；
  重启|重新加载）
    echo "重新启动 $DESC："
    停止
    # 一秒钟可能不足以让守护进程停止，
    # 如果发生这种情况，d_start 将失败（并且 dpkg 也会中断，如果
    # 软件包正在升级）。如果需要，请更改超时时间
    # 或者将 d_stop 更改为让 start-stop-daemon 使用--retry。
    # 请注意，使用--retry会稍微减慢关机过程。
    睡眠 1
    开始
  ；；
  *）
    echo "用法：$SCRIPTNAME {start|stop|restart|reload}" >&2
    出口 3
  ；；
埃萨克

退出 $?

    /etc/init.d/munin-fcgi在具有权限的情况下安装上述内容755

  • 在您的 vhost 中，例如/etc/nginx/conf.d/example.com.conf，在块中添加此内容server { }。您可以更改允许的 IP 块以适合您的设置。我在本地服务器上执行了此操作，并希望 munin 图表仅在本地可用。

    位置 /munin {
#别名/var/cache/munin/www;
    索引 索引.html；
#包括/etc/nginx/php.conf；
#访问日志关闭；
    允许 127.0.0.1；
    允许 192.168.0.0/16；
    全部否认；                                
}

位置 ^~ /munin-cgi/munin-cgi-graph/ {
# 如果 ($uri ~ /munin-cgi/munin-cgi-graph/([^/]*)) { 设置 $path $1; }
    fastcgi_split_path_info ^(/munin-cgi/munin-cgi-graph)(.*);
    fastcgi_param PATH_INFO $fastcgi_path_info;
    fastcgi_pass unix:/var/run/munin/fastcgi-munin-graph.sock；
    包括 fastcgi_params；
}
位置 ^~ /munin-cgi/munin-cgi-html/ {
# 如果 ($uri ~ /munin-cgi/munin-cgi-html/([^/]*)) { 设置 $path $1; }
    fastcgi_split_path_info ^(/munin-cgi/munin-cgi-html)(.*);
    fastcgi_param PATH_INFO $fastcgi_path_info;
    fastcgi_pass unix:/var/run/munin/fastcgi-munin-html.sock；
    包括 fastcgi_params；
}

  • 启动/etc/init.d/munin-fcgi start并重新加载 nginx，然后您就可以开始了。

    • ps 我确实将 munin 的 html 文件夹链接到我的 vhost 的文件夹：ln -s /var/cache/munin/www/ /var/www/example.com/munin -v。

    答案2

    这听起来像是 中的定义有问题static/dynazoom.html。在我们的安装中，我们有

    form.cgiurl_graph.value = qs.get("cgiurl_graph", "/munin-cgi/munin-cgi-graph");

    我怀疑你有

    form.cgiurl_graph.value = qs.get("cgiurl_graph", "/usr/share/munin/cgi/munin-cgi-graph");

    虽然应该如此

    form.cgiurl_graph.value = qs.get("cgiurl_graph", "/cgi-bin/munin-cgi-graph");

    我仍然确信问题大致就在这里。只要缩放图表的请求以 开头，nginx 配置看起来就正确/cgi-bin/munin-cgi-graph。我不明白/data/munin/...它来自哪里。

    尝试在可以监视浏览器（fiddler、chrome dev tools）发送的请求的环境中运行，并查看实际发送的内容。

    您确定您编辑的是 dynazoom 的正确副本吗？尝试进行一些微小的可见更改以验证这一点。

    答案3

    我在 ubuntu 12.04 上遇到了类似的问题，使用的是 munin 2.0.21。
    检查 dynazoom 尝试查找 munin-cgi-graph 的位置。
    Munin 的 wiki 上说你应该配置你的 nginx fcgi-graph

    location ^~ /cgi-bin/munin-cgi-graph/

    在我使用 Chrome 开发者工具（网络选项卡）检查页面时，我发现 dynazoom 正在尝试从中获取 munin-cgi-graph/munin-cgi/munin-cgi-graph/不是来自/cgi-bin/munin-cgi-graph/并且它得到 404 错误而不是图表

    所以我刚刚在 nginx 配置中改变了这个位置：

        location ^~ /munin-cgi/munin-cgi-graph/ {
        access_log off;
        fastcgi_split_path_info ^(/munin-cgi/munin-cgi-graph)(.*);
        fastcgi_param PATH_INFO $fastcgi_path_info;
        fastcgi_pass unix:/var/run/munin/fcgi-graph.sock;
        include fastcgi_params;
 }

    看起来您遇到了同样的问题，您的 munin-cgi-graph 位置不正确，因此浏览器请求root /data/munin正如错误所说的那样。

    答案4

    我想在这次谈话中补充一些内容。the_architecht 提供的信息非常有价值，但至少对我来说缺少了一些东西。

    这里使用 CentOS 6.8：

    -

    1) CGI 文件的路径已更改，可以通过定位找到它们：

    /var/www/cgi-bin/munin-cgi-graph
/var/www/cgi-bin/munin-cgi-html

    我必须在启动脚本中逐行比较位置，并分解守护进程启动行以查看哪里出了问题，这样我就可以追踪文件路径的差异。

    -

    2) 日志的权限被设置为“munin”用户，这导致了某种无提示错误。为了解决这个问题，我将 www-data 用户添加到 munin 组，并将日志文件 chmod 664：

    -rw-rw-r-- 1 munin munin 0 Apr 27 20:35 /var/log/munin/munin-cgi-graph.log
-rw-rw-r-- 1 munin munin 0 Apr 27 20:35 /var/log/munin/munin-cgi-html.log

    文件权限的泄露涉及Munin 维基在 spawn-fcgi 进程启动结束时添加 -n，然后 strace -s1024 出现错误

    写入（2，“[2017 年 4 月 27 日星期四 21:47:35] munin-cgi-html：无法打开 /var/log/munin/munin-cgi-html.log（权限被拒绝）位于 /usr/share/perl5/vendor_perl/Log/Log4perl/Appender/File.pm 第 103 行。\n”，180 [2017 年 4 月 27 日星期四 21:47:35] munin-cgi-html：无法打开 /var/log/munin/munin-cgi-html.log（权限被拒绝）位于 /usr/share/perl5/vendor_perl/Log/Log4perl/Appender/File.pm 第 103 行。

    我的最终 Nginx 和 spawn-fcgi 以及我的修改如下：

    server {

        listen $IP;
        server_name $host.example.com;

                access_log      /var/log/nginx/domlogs/munin-access.log;
                error_log       /var/log/nginx/domlogs/munin-error.log;

    root /var/www/html/munin/;
    index   index.html;


location / {
        auth_basic            "Restricted";
       # Create the htpasswd file with the htpasswd tool.
        auth_basic_user_file  /etc/nginx/htpasswd/munin;

}

location ^~ /munin-cgi/munin-cgi-graph/ {
#   if ($uri ~ /munin-cgi/munin-cgi-graph/([^/]*)) { set $path $1; }
    fastcgi_split_path_info ^(/munin-cgi/munin-cgi-graph)(.*);
    fastcgi_param PATH_INFO $fastcgi_path_info;
    fastcgi_pass unix:/var/run/munin/fastcgi-munin-graph.sock;
    include fastcgi_params;
}
location  ^~ /munin-cgi/munin-cgi-html/ {
#   if ($uri ~ /munin-cgi/munin-cgi-html/([^/]*)) { set $path $1; }
    fastcgi_split_path_info ^(/munin-cgi/munin-cgi-html)(.*);
    fastcgi_param PATH_INFO $fastcgi_path_info;
    fastcgi_pass unix:/var/run/munin/fastcgi-munin-html.sock;
    include fastcgi_params;
}

}

    #! /bin/bash
### BEGIN INIT INFO
# Provides:          munin-fastcgi
# Required-Start:    $remote_fs $network
# Required-Stop:     $remote_fs $network
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: starts munin-fastcgi
# Description:       Spawn Munin FCGI sockets for Web access
### END INIT INFO

#
# munin-fastcgi     Startup script for Munin CGI services
#
# chkconfig: - 84 15
# description: Loading Munin CGI services using spawn-cgi
#              HTML files and CGI.
#
# Author:  Ryan Norbauer 
# Modified:     Geoffrey Grosenbach http://topfunky.com
# Modified:     David Krmpotic http://davidhq.com
# Modified:     Kun Xi http://kunxi.org
# Modified:     http://drumcoder.co.uk/
# Modified:     http://uname.pingveno.net/
# Modified:     the_architecht http://iwbyt.com/
# Modified:     Jame Scott - NeCr0mStR

DESC="Munin FCGI for Graph and HTML"

SCRIPTNAME="$(tput setaf 1)Munin-FastCGI$(tput sgr0)"

PATH=/usr/local/bin/:/usr/local/sbin:$PATH
DAEMON=$(which spawn-fcgi)
FCGI_GRAPH_SOCK=/var/run/munin/fastcgi-munin-graph.sock
FCGI_HTML_SOCK=/var/run/munin/fastcgi-munin-html.sock
WWW_USER=www-data
FCGI_USER=www-data
FCGI_GROUP=www-data
FCGI_SPAWN_GRAPH=/var/www/cgi-bin/munin-cgi-graph
FCGI_SPAWN_HTML=/var/www/cgi-bin/munin-cgi-html
PIDFILE_GRAPH=/var/run/munin/fastcgi-munin-graph.pid
PIDFILE_HTML=/var/run/munin/fastcgi-munin-html.pid

# Gracefully exit if the package has been removed.

    test -x $DAEMON || exit 0
    test -x $FCGI_SPAWN_GRAPH || exit 0
    test -x $FCGI_SPAWN_HTML || exit 0


start_graph() {
    if [[ $(/bin/ps ax | awk '/munin-cgi-graph$/ {print $1}') ]];then
        local   RUNNING_PID_GRAPH=$(/bin/ps ax | awk '/munin-cgi-graph$/ {print $1}')
    fi


    if [[ -s ${PIDFILE_GRAPH} && ${RUNNING_PID_GRAPH} = $(cat ${PIDFILE_GRAPH}) ]];then
        echo -e "\nMunin-Graph already running"
    elif [[ -n ${RUNNING_PID_GRAPH} && ${RUNNING_PID_GRAPH} != $(cat ${PIDFILE_GRAPH}) && -S ${FCGI_GRAPH_SOCK} ]];then
        echo -e "\nMunin-Graph PID mismatch :: Cleaning up and starting Munin-Graph"
        kill -QUIT ${RUNNING_PID_GRAPH}
        sleep 1
            $DAEMON -s $FCGI_GRAPH_SOCK -U $WWW_USER -u $FCGI_USER -g $FCGI_GROUP -P $PIDFILE_GRAPH $FCGI_SPAWN_GRAPH > /dev/null 2>&1
    else     
            $DAEMON -s $FCGI_GRAPH_SOCK -U $WWW_USER -u $FCGI_USER -g $FCGI_GROUP -P $PIDFILE_GRAPH $FCGI_SPAWN_GRAPH > /dev/null 2>&1
            echo -e "Starting Munin-Graph\n"
    fi
}

start_html() {
    if [[ $(/bin/ps ax | awk '/munin-cgi-html$/ {print $1}') ]];then
        local   RUNNING_PID_HTML=$(/bin/ps ax | awk '/munin-cgi-html$/ {print $1}')
    fi


    if [[ -s ${PIDFILE_HTML} && ${RUNNING_PID_HTML} = $(cat ${PIDFILE_HTML}) ]];then
        echo -e "\nMunin-HTML already running"
    elif [[ -n ${RUNNING_PID_HTML} && ${RUNNING_PID_HTML} != $(cat ${PIDFILE_HTML}) && -S ${FCGI_HTML_SOCK} ]];then
            echo -e "\nMunin-HTML PID mismatch :: Cleaning up and starting Munin-HTML"
            kill -QUIT ${RUNNING_PID_HTML}
                sleep 1
                $DAEMON -s $FCGI_HTML_SOCK -U $WWW_USER -u $FCGI_USER -g $FCGI_GROUP -P $PIDFILE_HTML $FCGI_SPAWN_HTML > /dev/null 2>&1
    else       
                $DAEMON -s $FCGI_HTML_SOCK -U $WWW_USER -u $FCGI_USER -g $FCGI_GROUP -P $PIDFILE_HTML $FCGI_SPAWN_HTML > /dev/null 2>&1
                echo -e "Starting Munin-HTML\n"
    fi
}

stop_graph() {
    if [[ $(/bin/ps ax | awk '/munin-cgi-graph$/ {print $1}') ]];then
        local   RUNNING_PID_GRAPH=$(/bin/ps ax | awk '/munin-cgi-graph$/ {print $1}')
    fi

    if [[ -s ${PIDFILE_GRAPH} && $(cat ${PIDFILE_GRAPH}) = ${RUNNING_PID_GRAPH} ]];then
        kill -QUIT $(cat ${PIDFILE_GRAPH})
            echo -e "\nMunin-Graph stopped"
        elif [[ -z ${RUNNING_PID_GRAPH} && -s ${PIDFILE_GRAPH} ]];then
                echo -e "\nGraph PID not found :: Cleaning up PID file"
                rm ${PIDFILE_GRAPH}
        elif [[ -s ${PIDFILE_GRAPH} && $(cat ${PIDFILE_GRAPH}) != ${RUNNING_PID_GRAPH} ]];then
                kill -QUIT ${RUNNING_PID_GRAPH}
                rm ${PIDFILE_GRAPH}
                echo -e "\nMunin-Graph stopped :: Cleaning up PID file"
    else 
                echo -e "\nNo Munin-Graph process found"
    fi
}

stop_html() {
    if [[ $(/bin/ps ax | awk '/munin-cgi-html$/ {print $1}') ]];then
        local   RUNNING_PID_HTML=$(/bin/ps ax | awk '/munin-cgi-html$/ {print $1}')
    fi

    if [[ -s ${PIDFILE_HTML} && $(cat ${PIDFILE_HTML}) = ${RUNNING_PID_HTML} ]];then
        kill -QUIT $(cat ${PIDFILE_HTML})
            echo -e "\nMunin-HTML stopped"
        elif [[ -z ${RUNNING_PID_HTML} && -s ${PIDFILE_HTML} ]];then
            echo -e "\nHTML PID not found :: Cleaning up PID file"
                rm ${PIDFILE_HTML}
        elif [[ -s ${PIDFILE_HTML} && $(cat ${PIDFILE_HTML}) != ${RUNNING_PID_HTML} ]];then
                kill -QUIT ${RUNNING_PID_HTML}
                rm ${PIDFILE_HTML}
                echo -e "\nMunin-HTML stopped :: Cleaning up PID file"
        else 
                echo -e "\nNo Munin-HTML process found"
    fi
}


case "$1" in
    start)
        echo "Starting $DESC: "
        start_graph
        start_html
        ;;
    start_graph)
        echo "Starting Munin-Graph"
        start_graph
        ;;
    start_html)
        echo "Starting Munin-HTML"
        start_html
        ;;
    stop_graph)
        echo "Stopping Munin_Graph"
        stop_graph
        ;;
    stop_html)
        echo "Stopping Munin-HTML"
        stop_html
        ;;
    stop)
        echo "Stopping $DESC: "
        stop_graph
        stop_html
        ;; 
    restart|reload)
        echo "Restarting $DESC: "
        stop_html
        stop_graph

# One second might not be time enough for a daemon to stop,
# if this happens, d_start will fail (and dpkg will break if
# the package is being upgraded). Change the timeout if needed
# be, or change d_stop to have start-stop-daemon use --retry.
# Notice that using --retry slows down the shutdown process somewhat.

        sleep 5
        start_graph
        start_html
        ;;
    *)
        echo "$(tput setaf 2)Usage: $SCRIPTNAME $(tput setaf 7)$(tput setab 0){start_graph|start_html|stop_graph|stop_html|start|stop|restart|reload}$(tput sgr0) " >&2
        exit 3
        ;;
esac

exit $?

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