openresty测试工具安装失败

[mirac...@gmail.com]

Hello，春哥，我在debian上安装openresty的测试工具遇到些问题

uname -r 显示版本为 3.16.0-4-amd64

perl版本为5.20.2

openresty是源码编译的

下面是我安装测试工具步骤

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#!/bin/bash

install_path=/soft

stap_path=/opt/stap

systemtap_version=3.0

#1. install basics - wget git

    apt-get install wget git -y

#2. install systemtap

    #2.1 install dependent

        apt-get install build-essential zlib1g-dev elfutils libdw-dev gettext

    #2.2 install kernel-debuginfo kernel-devel

        apt-get install linux-image-$(uname -r)-dbg

        apt-get install linux-headers-$(uname -r)

    #2.3 install systemtap

        #systemtap版本在2.1以上

        mkdir $install_path

        cd $install_path

        wget https://sourceware.org/systemtap/ftp/releases/systemtap-$systemtap_version.tar.gz

        tar -xvf systemtap-$systemtap_version.tar.gz

        cd systemtap-$systemtap_version

        ./configure --prefix=$stap_path --disable-docs --disable-publican --disable-refdocs CFLAGS="-g -O2"

        make && make install

        rm -rf systemtap-$systemtap_version.tar.gz

#3. install openresty-systemtap-toolkit stapxx

    #3.1 utrace

        #如果linux kernels版本低于3.5, 则需打utrace patch

    #3.2 perl

        #perl 要求版本在5.6.1以上

    #3.3 git clone openresty-systemtap-toolkit stapxx

        cd $install_path

        git clone https://github.com/openresty/openresty-systemtap-toolkit.git

        git clone https://github.com/openresty/stapxx

#4. install FlameGraph

    cd $install_path

    git clone https://github.com/brendangregg/FlameGraph.git

#5. PATH

    new_profile=/etc/profile.d/openresty_toos.sh

    echo "PATH=\$PATH:$stap_path/bin" > $new_profile

    echo "PATH=\$PATH:$install_path/stapxx" >> $new_profile

    echo "PATH=\$PATH:$install_path/FlameGraph" >> $new_profile

    echo "export LC_ALL=C" >> $new_profile

    #source $new_profile

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安装过程也没有问题，

但是我用openresty-systemtap-toolkit的第一个指令就出现了问题

./ngx-active-reqs -p 12545

报错如下：

WARNING: Kernel function symbol table missing [man warning::symbols]

WARNING: cannot find module /secone/webapng/nginx/sbin/nginx debuginfo: No DWARF information found [man warning::debuginfo]

semantic error: while processing probe process("/secone/webapng/nginx/sbin/nginx").function("ngx_process_events_and_timers") from: process("/secone/webapng/nginx/sbin/nginx").function("ngx_process_events_and_timers")

semantic error: unable to find global 'ngx_cached_time' in /secone/webapng/nginx/sbin/nginx: operator '@var' at <input>:16:22

        source:         cached_sec = @var("ngx_cached_time")->sec

                                     ^

Pass 2: analysis failed.  [man error::pass2]

Number of similar warning messages suppressed: 327.

Rerun with -v to see them.

请问，

1. 第二个WARNING，提示找不到debuginfo，那安装的linux-image-$(uname -r)-dbg是不是没生效？

2. 下面的semantic error该如何修补？

[Miracle]

我按照上面兄弟的方式安装一次，

同样安装过程没有报错，但

./ngx-active-reqs -p xxxx 出现下面的问题

ERROR: module version mismatch (#1 SMP Debian 3.16.36-1+deb8u2 (2016-10-19) vs #1 SMP Debian 3.16.7-ckt25-2 (2016-04-08)), release 3.16.0-4-amd64

WARNING: /opt/stap/bin/staprun exited with status: 1

Pass 5: run failed.  [man error::pass5]

为何apt-get install linux-image-$(uname -r)-dbg得到却是3.16.36和3.16.7版本的？该如何解决嘞？

[asf]

哦，明白了

内核名称没变一直是3.16.0-4-amd64，但我的依然是Debian 3.16.7-ckt25-2 (2016-04-08)

只要更新内核就好了