Linux Monitoring
# useradd -c "LPAR2RRD user" -m lpar2rrd
# vi /etc/security/limits.conf lpar2rrd hard stack -1 lpar2rrd soft stack -1 lpar2rrd hard data -1 lpar2rrd soft data -1 lpar2rrd hard nofile 32768 lpar2rrd soft nofile 32768 lpar2rrd hard nproc 5000 lpar2rrd soft nproc 5000 apache hard stack -1 apache soft stack -1 apache hard data -1 apache soft data -1
# ARCH=$( /bin/arch ) # subscription-manager repos --enable "codeready-builder-for-rhel-8-${ARCH}-rpms"
# yum config-manager --set-enabled PowerTools or # dnf config-manager --set-enabled powertoolsYou can also just open /etc/yum.repos.d/CentOS-Linux-Linux-PowerTools.repo with a text editor and set enabled= to 1 instead of 0
# umask 0022 # yum install perl rrdtool rrdtool-perl httpd mod_ssl # yum install epel-release # yum install perl-TimeDate perl-HTTP-Date perl-Env perl-CGI perl-Data-Dumper perl-LWP-Protocol-https perl-libwww-perl perl-Time-HiRes perl-IO-Tty # yum install perl-PDF-API2 perl-JSON-XS perl-XML-Simple perl-XML-NamespaceSupport perl-URI perl-XML-SAX-Base perl-XML-SAX perl-XML-LibXML # yum install ed bc libxml2 sharutil
# umask 0022 # apt-get install apache2 perl rrdtool ed bc # apt-get install librrdp-perl libxml-sax-perl libxml-simple-perl libtimedate-perl libenv-sanctify-perl libcgi-pm-perl libdata-dumper-simple-perl libpdf-api2-perl libxml2-utils # apt-get install liblwp-protocol-https-perl libcrypt-ssleay-perl libio-socket-ssl-perl libmozilla-ldap-perl libxml-parser-perl
# yum install httpd
# apt-get install httpd
# apachectl restart # /opt/freeware/apache/sbin/apachectl restart # /etc/init.d/httpd restart # service apache2 restart
# firewall-cmd --add-service=http --permanent # firewall-cmd --add-service=https --permanent # firewall-cmd --add-port=8162/tcp --permanent # firewall-cmd --reload
# vi /etc/httpd/conf/httpd.conf AddHandler cgi-script .sh # DocumentRoot "/home/lpar2rrd/lpar2rrd/www/" Alias /lpar2rrd "/home/lpar2rrd/lpar2rrd/www/" <Directory "/home/lpar2rrd/lpar2rrd/www/"> AllowOverride AuthConfig Options Indexes FollowSymLinks Require all granted </Directory> # CGI-BIN ScriptAlias /lpar2rrd-cgi/ "/home/lpar2rrd/lpar2rrd/lpar2rrd-cgi/" <Directory "/home/lpar2rrd/lpar2rrd/lpar2rrd-cgi"> AllowOverride AuthConfig SetHandler cgi-script Options ExecCGI FollowSymLinks Require all granted </Directory>
# a2enmod cgi # a2enmod ssl
# vi /etc/apache2/apache2.conf AddHandler cgi-script .sh Alias /lpar2rrd "/home/lpar2rrd/lpar2rrd/www/" <Directory "/home/lpar2rrd/lpar2rrd/www/"> Options Indexes FollowSymLinks Require all granted </Directory> # CGI-BIN ScriptAlias /lpar2rrd-cgi/ "/home/lpar2rrd/lpar2rrd/lpar2rrd-cgi/" <Directory "/home/lpar2rrd/lpar2rrd/lpar2rrd-cgi"> AllowOverride None Options +ExecCGI +SymLinksIfOwnerMatch Require all granted SetHandler cgi-script </Directory>
LoadModule alias_module /opt/freeware/lib/httpd/modules/mod_alias.so LoadModule cgi_module /opt/freeware/lib/httpd/modules/mod_cgi.so
LoadModule mpm_prefork_module /opt/freeware/lib/httpd/modules/mod_mpm_prefork.so # LoadModule mpm_worker_module /opt/freeware/lib/httpd/modules/mod_mpm_worker.so # LoadModule mpm_event_module modules/mod_mpm_event.so <IfModule mpm_prefork_module> LoadModule cgi_module /opt/freeware/lib/httpd/modules/mod_cgi.so </IfModule>
AddHandler cgi-script .sh Alias /lpar2rrd "/home/lpar2rrd/lpar2rrd/www/" <Directory "/home/lpar2rrd/lpar2rrd/www/"> Options Indexes FollowSymLinks Require all granted </Directory> # CGI-BIN ScriptAlias /lpar2rrd-cgi/ "/home/lpar2rrd/lpar2rrd/lpar2rrd-cgi/" <Directory "/home/lpar2rrd/lpar2rrd/lpar2rrd-cgi"> AllowOverride None SetHandler cgi-script Options ExecCGI FollowSymLinks Require all granted </Directory>
# vi /etc/opt/freeware/apache/httpd.conf Alias /lpar2rrd "/home/lpar2rrd/lpar2rrd/www/" <Directory "/home/lpar2rrd/lpar2rrd/www/"> Options Indexes FollowSymLinks Order allow,deny Allow from all </Directory> # CGI-BIN ScriptAlias /lpar2rrd-cgi/ "/home/lpar2rrd/lpar2rrd/lpar2rrd-cgi/" <Directory "/home/lpar2rrd/lpar2rrd/lpar2rrd-cgi"> AllowOverride None Options ExecCGI FollowSymLinks Order allow,deny Allow from all </Directory>
Step 1. Query for the Boolean value you need to change: # getsebool -a | grep httpd_dis httpd_disable_trans --> off Step 2. Disable the SELinux protection: # setsebool -P httpd_disable_trans=1 Step 3. Verify that the Boolean has changed: # getsebool -a | grep httpd_dis httpd_disable_trans --> on
# setenforce Permissive # vi /etc/sysconfig/selinux SELINUX=disabled
# su - lpar2rrd $ tar xvf lpar2rrd-7.XX.tar $ cd lpar2rrd-7.XX $ ./install.sh $ cd /home/lpar2rrd/lpar2rrd
$ crontab -l | grep load.sh $
$ crontab -e # LPAR2RRD UI 0,30 * * * * /home/lpar2rrd/lpar2rrd/load.sh > /home/lpar2rrd/lpar2rrd/load.out 2>&1Assure there is just one such entry in crontab.
# echo "lpar2rrd" >> /var/adm/cron/cron.allow
$ cd /home/lpar2rrd/lpar2rrd $ ./load.sh
tail /var/log/httpd/error_log # Apache error log tail /var/log/httpd/access_log # Apache access log tail /var/tmp/lpar2rrd-realt-error.log # STOR2RRD CGI-BIN log tail /var/tmp/systemd-private*/tmp/lpar2rrd-realt-error.log # STOR2RRD CGI-BIN log when Linux has enabled private temp
umask 022 cd /home/lpar2rrd/lpar2rrd/ cp bin/test-healthcheck-cgi.sh lpar2rrd-cgi/go to the web browser: http://<your web server>/lpar2rrd/test.html
# useradd -c "LPAR2RRD agent user" -m lpar2rrd
# rpm -Uvh lpar2rrd-agent-6.00-0.noarch.rpm # rpm -qa|grep lpar2rrd-agent lpar2rrd-agent-6.00-0
# apt-get install lpar2rrd-agent_6.00-0_all.deb lpar2rrd-agent-6.00-0
# su - lpar2rrd $ crontab -e * * * * * /usr/bin/perl /opt/lpar2rrd-agent/lpar2rrd-agent.pl <LPAR2RRD-SERVER> > /var/tmp/lpar2rrd-agent.out 2>&1Replace <LPAR2RRD-SERVER> by hostname of your LPAR2RRD server.
# echo "lpar2rrd" >> /var/adm/cron/cron.allow
$ telnet <LPAR2RRD-SERVER> 8162 Connected to 192.168.1.1 . Escape character is '^]'.This is ok, exit either Ctrl-C or ^].
$ /usr/bin/perl /opt/lpar2rrd-agent/lpar2rrd-agent.pl -d <LPAR2RRD-SERVER> ... Agent send : yes : forced by -d Agent send slp: sending wait: 4 OS agent working for server: <LPAR2RRD-SERVER> store file for sending is /var/tmp/lpar2rrd-agent-<LPAR2RRD-SERVER>-lpar2rrd.txtIt means that data has been sent to the server, all is fine
$ /usr/bin/perl /opt/lpar2rrd-agent/lpar2rrd-agent.pl -d <LPAR2RRD-SERVER> ... Agent send : yes : forced by -d Agent send slp: sending wait: 1 OS agent working for server: <LPAR2RRD-SERVER> store file for sending is /var/tmp/lpar2rrd-agent-<LPAR2RRD-SERVER>-lpar2rrd.txt Agent timed out after : 50 seconds /opt/lpar2rrd-agent/lpar2rrd-agent.pl:265It means that the agent could not contact the server.
$ ps -ef|grep lpar2rrd-daemon lpar2rrd 10617010 1 0 Mar 16 - 0:00 /usr/bin/perl -w /home/lpar2rrd/lpar2rrd/bin/lpar2rrd-daemon.pl $ cd /home/lpar2rrd/lpar2rrd $ tail logs/error.log-daemon $ tail logs/daemon.out new server has been found and registered: Linux (lpar=linuxhost01) mkdir : /lpar2rrd/data/Linux/no_hmc/linuxhost01/It means that new OS agent has been registered from linuxhost01 (Linux stand-alone example)
$ cd /home/lpar2rrd/lpar2rrd $ ls -l data/<server name>/*/<Linux name>/*mmm -rw-r--r-- 2 lpar2rrd staff 7193736 Mar 17 16:16 data/<server name>/no_hmc/<Linux name>/cpu.mmm -rw-r--r-- 2 lpar2rrd staff 7193736 Mar 17 16:16 data/<server name>/no_hmc/<Linux name>/lan-en1.mmm -rw-r--r-- 2 lpar2rrd staff 10790264 Mar 17 16:16 data/<server name>/no_hmc/<Linux name>/mem.mmm -rw-r--r-- 2 lpar2rrd staff 7193736 Mar 17 16:16 data/<server name>/no_hmc/<Linux name>/pgs.mmm -rw-r--r-- 2 lpar2rrd staff 7193736 Mar 17 16:16 data/<server name>/no_hmc/<Linux name>/san-vscsi0.mmm -rw-r--r-- 2 lpar2rrd staff 3597208 Mar 17 16:16 data/<server name>/no_hmc/<Linux name>/san_resp-vscsi0.mmm $ find data -name mem.mmm -exec ls -l {} \; ...