Monthly Archives: March 2017

Linux

How to change visudo editor from nano to vim?

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Type sudo update-alternatives --config editor

You will get a text like below.

There are 4 choices for the alternative editor (providing /usr/bin/editor).

  Selection    Path                Priority   Status
------------------------------------------------------------
* 0            /bin/nano            40        auto mode
  1            /bin/ed             -100       manual mode
  2            /bin/nano            40        manual mode
  3            /usr/bin/vim.basic   30        manual mode
  4            /usr/bin/vim.tiny    10        manual mode

Press enter to keep the current choice[*], or type selection number: 3

Find vim.basic or vim.tiny selection number. Type it and press enter. Next time when you open visudo your editor will be vim

未分類

安裝 Ubuntu Server 的一些初始網路設定 | Asika Lab 飛鳥實驗室

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平時太習慣 VPS 設定好的環境，剛安裝完單機版 Ununtu 之後就是連不上網路，不過內網連的好好的。希望將主機當成伺服器的使用者需要記得先做幾項設定，讓網路暢通。 設定靜態 IP 輸入以下指令編輯網路設定: $ sudo vim /etc/network/interface 改成如下設定 # This file describes the network interfaces av

Source: 安裝 Ubuntu Server 的一些初始網路設定 | Asika Lab 飛鳥實驗室

Linux, Network

SPINE: Poller[0] ERROR: Spine Timed Out While Processing Hosts Internal

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http://blog.pnyet.web.id/2013/01/07/solved-error-spine-timed-out-while-processing-hosts-internal.html

 

 

 

cacti_host_internal

[Solved] SPINE: Poller[0] ERROR: Spine Timed Out While Processing Hosts Internal

DAVID

cacti_host_internalFew days ago I’ve a problem when installing cacti 0.8.8a, and only 3 devices that successfully graphed. My cacti running on CentOS 6.3 x86_64 with core i7 and 8GB ram, 240GB SSD and will used for populate about 3000 – 3500 data sources. First time I ran the cacti and everything work fine and I can add about 4 graphs on two devices and the graph is normal.

The problem come after generate about 300 graphs and the new graph doesn’t show. I got the following error message from cacti.log:

 01/02/2013 06:59:06 AM - SPINE: Poller[0] ERROR: Spine Timed Out 
 While Processing Hosts Internal
 01/02/2013 06:59:06 AM - SPINE: Poller[0] ERROR: Spine Timed Out
 While Processing Hosts Internal
 01/02/2013 07:00:08 AM - SPINE: Poller[0] ERROR: Spine Timed Out
 While Processing Hosts Internal
 01/02/2013 07:00:08 AM - SPINE: Poller[0] ERROR: Spine Timed Out
 While Processing Hosts Internal
 01/02/2013 07:01:07 AM - SPINE: Poller[0] ERROR: Spine Timed Out
 While Processing Hosts Internal
 01/02/2013 07:01:07 AM - SPINE: Poller[0] ERROR: Spine Timed Out
 While Processing Hosts Internal
 01/02/2013 07:02:08 AM - SPINE: Poller[0] ERROR: Spine Timed Out
 While Processing Hosts Internal
 01/02/2013 07:02:08 AM - SPINE: Poller[0] ERROR: Spine Timed Out
 While Processing Hosts Internal
 01/02/2013 07:03:10 AM - SPINE: Poller[0] ERROR: Spine Timed Out 
 While Processing Hosts Internal
 01/02/2013 07:03:10 AM - SPINE: Poller[0] ERROR: Spine Timed Out 
 While Processing Hosts Internal
 01/02/2013 07:04:07 AM - SPINE: Poller[0] ERROR: Spine Timed Out
 While Processing Hosts Internal

After got the error log in above, I did the following steps:

1. Modify PHP execution time limit ini php.ini and change the maximum execution time from 60 second to 180 second
# vi php.ini
max_execution_time = 180

2. Increase script server time out value from 60 second to 180 or above depend on yours, go to cacti console enter to setting menu and then change “Script and Script Server Timeout Value” from 60 to 180 or above.

If two step in above doesn’t work

also try to modify mysql & php config.

How to change max_connections

You can change max_connections while MySQL is running via SET:

mysql> SET GLOBAL max_connections = 5000;
Query OK, 0 rows affected (0.00 sec)

mysql> SHOW VARIABLES LIKE "max_connections";
+-----------------+-------+
| Variable_name   | Value |
+-----------------+-------+
| max_connections | 5000  |
+-----------------+-------+
1 row in set (0.00 sec)