SAS

WUSS 2016: The Papers

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The Western Users of SAS Software 2016 conference is over.  I have been to a lot of SAS conferences, but WUSS is always my favorite because it is big enough for me to learn a lot, but small enough to be really friendly.  I’m already excited about next year’s conference in Long Beach, September 20-22. […]

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SAS

Where will the ‘union vote’ matter most in the upcoming election?

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In the past, a large percentage of US workers have been union members, and the unions could exert a big influence on elections. How powerful are the unions these days, an where do they wield the most influence? Let’s map it out… In 1954, almost 35% of US workers belonged to […]

The post Where will the ‘union vote’ matter most in the upcoming election? appeared first on SAS Learning Post.

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SAS

Use Slack bot to monitor the server

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I used to install Datadog or other SaaS to monitor my Linux boxes on the cloud. Most times they are just overkill for my tiny servers with only 1GB or 2GB memory. Actually what I am most interested is the up-and-running processes, or/and the exact memory usage. And I need a mobile solution to monitor on-the-go.
Now with the coming of Slack bot, and its real time Python client, I can just use a simple Python script to realize the purposes. 
from slackclient import SlackClient
from subprocess import  getoutput
import logging
import time

message_channel = '#my-server-001'
api_key = 'xoxb-slack-token'
client = SlackClient(api_key)

if client.rtm_connect():
while True:
        last_read = client.rtm_read()
if last_read:
try:
                parsed = last_read[0]['text']
if parsed and 'status' in parsed:
                    result = getoutput('pstree')
                    result += '\n\n' + getoutput('free -h')
                    client.rtm_send_message(message_channel, str(result))
except Exception as e:
                logging.error(e)
        time.sleep(1)
Then I use systemd or other tools to daemonize it. No matter where and when I am, I enter status at the #my-server-001 channel on my phone, I will instantly get the result like – 
systemd-+-accounts-daemon-+-{gdbus}
       |                 `-{gmain}
       |-agetty
       |-cron
       |-dbus-daemon
       |-fail2ban-server---2*[{fail2ban-server}]
       |-login---bash
       |-nginx---nginx
       |-postgres---5*[postgres]
       |-python---sh---pstree
       |-redis-server---2*[{redis-server}]
       |-rsyslogd-+-{in:imklog}
       |          |-{in:imuxsock}
       |          `-{rs:main Q:Reg}
       |-sshd-+-3*[sshd---sshd---bash]
       |      `-sshd---sshd
       |-2*[systemd---(sd-pam)]
       |-systemd-journal
       |-systemd-logind
       |-systemd-timesyn---{sd-resolve}
       |-systemd-udevd
       `-uwsgi---uwsgi---5*[uwsgi]

             total        used        free      shared  buff/cache   available
Mem:           2.0G        207M        527M         26M        1.2G        1.7G
Swap:          255M          0B        255M
​

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