Nginx 跳转fastdfs存储图片地址报错问题分析过程汇总

1，问题描述

上传压缩图片报错：org.csource.common.MyException: getStoreStorage fail, errno code: 2

原因是dns域名ping不通traker，改成ip地址OK了，如下所示：

[[email protected] logs]# vim/etc/fdfs/storage_group2.conf

#tracker_server=tracker.mytest.com:22122

tracker_server=192.168.121.219:22122

然后重启storeage服务

/usr/local/bin/fdfs_storaged/etc/fdfs/storage_group2.conf &

2，check,进去/home/plocc/fastdfs_group2目录下面有logs目录

再进去看日志信息，一切正常，如下所示：

[[email protected] ~]# ll/home/plocc/fastdfs_group2/

total 8

drwxr-xr-x. 259 root root 4096 May  4  2014data

drwxr-xr-x.   2 root root 4096 May  4  2014logs

[[email protected] ~]#

cd /home/plocc/fastdfs_group2/logs

[[email protected] logs]# tail -f storaged.log

......

[2015-03-30 09:41:07] INFO - file:storage_param_getter.c, line: 187, use_storage_id=0, id_type_in_filename=ip,storage_ip_changed_auto_adjust=1, store_path=0, reserved_storage_space=20.00%,use_trunk_file=0, slot_min_size=256, slot_max_size=16 MB, trunk_file_size=64MB, trunk_create_file_advance=0, trunk_create_file_time_base=02:00,trunk_create_file_interval=86400, trunk_create_file_space_threshold=20 GB,trunk_init_check_occupying=0, trunk_init_reload_from_binlog=0,store_slave_file_use_link=0

[2015-03-30 09:41:07] INFO - file:storage_func.c, line: 174, tracker_client_ip: 192.168.121.220,my_server_id_str: 192.168.121.220, g_server_id_in_filename: -596006720

[2015-03-30 09:41:07] INFO -local_host_ip_count: 2,  127.0.0.1  192.168.121.220

[2015-03-30 09:41:08] INFO - file:tracker_client_thread.c, line: 308, successfully connect to tracker server192.168.121.219:22122, as a tracker client, my ip is 192.168.121.220

[2015-03-30 09:41:08] INFO - file:tracker_client_thread.c, line: 1124, tracker server 192.168.121.219:22122, settracker leader: 192.168.121.219:22122

3，新问题来了，然后图片下载的时候，报错如下：

下载图片group2/M00/00/B4/wKh53FUYq1eAPeAWAABs0PIXl7w885.jpg 时出错.

先去查下fastdfs服务器上是否有这个文件，查询到确实有这个文件的

[[email protected] data]# find . -namewKh53FUYq1eAPeAWAABs0PIXl7w885.jpg

./00/B4/wKh53FUYq1eAPeAWAABs0PIXl7w885.jpg

[[email protected] data]# pwd

/home/plocc/fastdfs_group2/data

[[email protected] data]#

问题在哪里呢？，我们通过网站上一个能访问的图片地址，来检查判断。随意打开网站一个图片，在图片上面右键点击，选择“复制图片地址”，得到如下信息：

http://static.mytest.com/group1/M00/03/AF/wKi0d1QGA0qANZk5AABawNvHeF0411.png

4，ping下static.mytest.com，去上面检查nginx配置

ping一下这个static.mytest.com，去看下是在哪一台服务器上面：

[[email protected] ~]# ping static.mytest.com

PING static.mytest.com (192.168.121.221)56(84) bytes of data.

64 bytes from 192.168.121.221: icmp_seq=1ttl=64 time=0.251 ms

64 bytes from 192.168.121.221: icmp_seq=2ttl=64 time=0.326 ms

64 bytes from 192.168.121.221: icmp_seq=3ttl=64 time=0.305 ms

64 bytes from 192.168.121.221: icmp_seq=4ttl=64 time=0.299 ms

^C

--- static.mytest.com ping statistics ---

4 packets transmitted, 4 received, 0%packet loss, time 3762ms

rtt min/avg/max/mdev =0.251/0.295/0.326/0.030 ms

[[email protected] ~]#

然后进去192.168.121.221里面去查看里面的nginx配置，进入

[[email protected] ~]# cd/usr/local/nginx/conf

[[email protected] conf]# vim nginx.conf #进去检索/group2或者group1

会发现如下配置：

location ~* ^/group1/.*$ {

proxy_pass http://filebackend;

}

location ~* ^/group2/.*$ {

proxy_pass http://filebackend;

}

然后再继续在nginx.cnf里面需找filebackend的配置，会看到如下配置：

upstream filebackend{

server dfs.mytest.com:8090;

}

5，去检查nginx里面filebackend所对应的dfs.mytest.com

去ping下dfs.mytest.com，看看去访问那个地址

[[email protected] ~]# ping dns.mytest.com

PING dns.mytest.com (192.168.121.212)56(84) bytes of data.

64 bytes from 192.168.121.212: icmp_seq=1ttl=64 time=0.081 ms

64 bytes from 192.168.121.212: icmp_seq=2ttl=64 time=0.110 ms

64 bytes from 192.168.121.212: icmp_seq=3ttl=64 time=0.104 ms

^C

--- dns.mytest.com ping statistics ---

3 packets transmitted, 3 received, 0%packet loss, time 2275ms

rtt min/avg/max/mdev =0.081/0.098/0.110/0.014 ms

[[email protected] ~]#

然后去192.168.121.212里面去看下nginx配置，需找/group1或者group2，发现有group1没有group2

location ~* ^/group1/.*$ {

proxy_pass http://filebackend;

include proxy.conf;

error_log  logs/file_error.loginfo;

access_log logs/file_access.log  main;

}

所以追加一个group2

location ~* ^/group2/.*$ {

proxy_pass http://filebackend;

include proxy.conf;

error_log  logs/file_error.loginfo;

access_log logs/file_access.log  main;

}

我们在继续在nginx.conf里面检索filebackend，看看指向哪里

upstream filebackend{

server 192.168.121.220:8090;

}

6，去upstream服务器121.220上面查看nginx服务8090

看到指向192.168.121.220，然后我们去192.168.121.220上找fastdfs文件服务器，先去查看下后台进程找到fastdfs的配置文件路径

[[email protected] bin]# ps -eaf|grepfdfs_storaged

root    25036     1  0 09:41 ?        00:00:00 /usr/local/bin/fdfs_storaged/etc/fdfs/storage_group2.conf

root    25176 25121  0 11:00 pts/2    00:00:00 grep fdfs_storaged

[[email protected] bin]#

然后再去配置文件里面/etc/fdfs/storage_group2.conf去查看图片文件存放路径

[[email protected] bin]# vim /etc/fdfs/storage_group2.conf

# the base path to store data and log files

base_path=/home/plocc/fastdfs_group2

然后去/home/plocc/fastdfs_group2路径下面查找下载图片保存的图片是否存在这里：

然后图片下载的时候，报错如下：下载图片

group2/M00/00/B4/wKh53FUYq1eAPeAWAABs0PIXl7w885.jpg 时出错.

[[email protected] fastdfs_group2]# find .-name wKh53FUYq1eAPeAWAABs0PIXl7w885.jpg

./data/00/B4/wKh53FUYq1eAPeAWAABs0PIXl7w885.jpg

[[email protected] fastdfs_group2]#

文件是存在的，所以然后需要在fastdfs本地提供的服务 server 192.168.121.220:8090;去找8090端口

[[email protected] conf]# netstat -anp |grep8090

tcp        0     0 0.0.0.0:8090               0.0.0.0:*                   LISTEN      1266/nginx

[[email protected] conf]#

是在nginx上面，我们去看nginx的配置

server {

listen       8090;

server_name  localhost;

#charset koi8-r;

#access_log logs/host.access.log  main;

location /group1/M00 {

root   /home/plocc/fastdfs/data;

ngx_fastdfs_module;

}

location /group2/M00 {

root   /home/plocc/fastdfs_group2;

ngx_fastdfs_module;

}

看到里面有/group2/M00，我们再去/home/plocc/fastdfs_group2里面看下图片是否存在这里面

[[email protected] conf]# cd/home/plocc/fastdfs_group2

[[email protected] fastdfs_group2]# find .-name wKh53FUYq1eAPeAWAABs0PIXl7w885.jpg

./data/00/B4/wKh53FUYq1eAPeAWAABs0PIXl7w885.jpg

[[email protected] fastdfs_group2]#

图片是存在的，那么我们套用下group1的地址前缀http://static.mytest.com，套在下载失败的那个上面，url如下

http://static.mytest.com/group2/M00/00/B4/wKh53FUYq1eAPeAWAABs0PIXl7w885.jpg，如下1.png所示：

跟开发人员说地址能正常访问，开发人员去查看了下代码，结果发现问题出在他配置的图片下载host地址的路径不对，修改正常的host路径，就能访问图片了。

7，Nginx报错：open log file "/home/plocc/fastdfs/logs/mod_fastdfs.log"to write fail,

PS：一个报错总结记录

[[email protected] logs]# tail -f error.log

2015/03/30 14:52:22 [alert] 26293#0: workerprocess 26297 exited with fatal code 2 and cannot be respawned

open log file"/home/plocc/fastdfs/logs/mod_fastdfs.log" to write fail, errno: 13,error info: Permission denied2015/03/30 14:52:22 [alert] 26293#0: workerprocess 26294 exited with fatal code 2 and cannot be respawned

ngx_http_fastdfs_process_init pid=26305

ngx_http_fastdfs_process_init pid=26306

open log file"/home/plocc/fastdfs/logs/mod_fastdfs.log" to write fail, errno: 13,error info: Permission deniedngx_http_fastdfs_process_init pid=26308

ngx_http_fastdfs_process_init pid=26307

open log file"/home/plocc/fastdfs/logs/mod_fastdfs.log" to write fail, errno: 13,error info: Permission deniedopen log file "/home/plocc/fastdfs/logs/mod_fastdfs.log"to write fail, errno: 13, error info: Permission denied2015/03/30 14:53:50[alert] 26304#0: worker process 26305 exited with fatal code 2 and cannot berespawned

2015/03/30 14:53:50 [alert] 26304#0: workerprocess 26306 exited with fatal code 2 and cannot be respawned

open log file"/home/plocc/fastdfs/logs/mod_fastdfs.log" to write fail, errno: 13,error info: Permission denied2015/03/30 14:53:50 [alert] 26304#0: workerprocess 26308 exited with fatal code 2 and cannot be respawned

2015/03/30 14:53:50 [alert] 26304#0: workerprocess 26307 exited with fatal code 2 and cannot be respawned

^C

[[email protected] logs]#

需要赋予777的权限

chmod 777/home/plocc/fastdfs/logs/mod_fastdfs.log

然后重启fastdfs storage服务，搞定。

 ----------------------------------------------------------------------------------------------------------------
<版权所有，文章允许转载，但必须以链接方式注明源地址，否则追究法律责任!>
原博客地址：      http://blog.itpub.net/26230597/viewspace-1479382/
原作者：黄杉 (mchdba)
----------------------------------------------------------------------------------------------------------------

时间： 2024-10-21 10:45:29

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