Icinga@MariaDB-Apache-RHEL8.md 19 KB
init on 21 July 2020, 10:10:56
2021 01 27 * updated
NO PACKAGES IN REPOSITORY at the moment of writing, icinga packages were not available in RHN for RH Satellites subscribed to Icinga_RHEL8_Icinga_RHEL8
ICINGA (master installation)
enable REPOS, subscribe if needed
yum repolist yum update yum install icinga2 icinga2-selinux systemctl enable icinga2 && systemctl restart icinga2 && systemctl status icinga2 icinga2 feature list
yum install icingaweb2 icingaweb2-selinux icingacli
if you wish to use EPEL's plugins, install them with
yum install nagios-plugins-all
otherwise install them manually
[...]
yum install mariadb-server mariadb
use better module installation instead
yum module install mariadb systemctl enable mariadb && systemctl start mariadb
secure mariadb installation (set root pass, disable its remote access)
mysql_secure_installation
install icinga--mariadb connector
yum install icinga2-ido-mysql
create database, user and tables
mysql -u root -p CREATE DATABASE icinga; # you may create user and grand using same command # CREATE USER icinga@localhost IDENTIFIED BY 'newpass'; # GRANT SELECT, INSERT, UPDATE, DELETE, DROP, CREATE VIEW, INDEX, EXECUTE ON icinga.* TO 'icinga'@'localhost'; GRANT SELECT, INSERT, UPDATE, DELETE, DROP, CREATE VIEW, INDEX, EXECUTE ON icinga.* TO 'icinga'@'localhost' IDENTIFIED BY '(newpass)'; FLUSH PRIVILEGES; quit mysql -u root -p icinga < /usr/share/icinga2-ido-mysql/schema/mysql.sql
determine credentials
vi /etc/icinga2/features-available/ido-mysql.conf uncomment and update credentials ln -s /etc/icinga2/features-available/ido-mysql.conf /etc/icinga2/features-enabled/ido-mysql.conf systemctl restart icinga2
better to install using module command and check that it is running
yum install httpd
yum module install httpd systemctl enable httpd && systemctl start httpd netstat -ntap | grep -e 80 -e 443
configure icinga
icinga2 api setup systemctl restart icinga2
set new pass for root API user
vi /etc/icinga2/conf.d/api-users.conf
add another user
object ApiUser "icingaweb2" { password = "newpass" // permissions = [ "status/query", "actions/", "objects/modify/", "objects/query/" ] permissions = [ "" ] } systemctl restart icinga2
check which php version you have with
php -v
you might need to install php7 version:
yum install rh-php71 rh-php71-php-mysqlnd
systemctl enable rh-php71-php-fpm.service && systemctl start rh-php71-php-fpm.service
check for FilesMatch, if using php-fpm
vi /etc/httpd/conf.d/icingaweb2.conf
restart php, if changed needed to apply
systemctl restart rh-php71-php-fpm.service && systemctl status rh-php71-php-fpm.service
generate new token, copy-paste into notepad, you will need it
icingacli setup token create The newly generated setup token is: 51223xxxxxxx0f12
create table in DB for icingaweb2
mysql -u root -p CREATE DATABASE icingaweb2; GRANT ALL ON icingaweb2.* TO icingaweb2@localhost IDENTIFIED BY '(newpass)';
does not exist in repo, comes from EPEL, better is "GraphicsMagick.x86_64 : An ImageMagick fork, offering faster image generation and better quality"
yum install ImageMagick
causes dependecies error
yum install ImageMagick-devel
source /opt/rh/rh-php71/enable
/opt/rh/rh-php71/root/bin/pecl install imagick
server firewall
open firewall, if needed tcp/(80,443)
vi /etc/sysconfig/iptables
##
Icinga welcomes.
##
-A INPUT -m state --state NEW -m tcp -p tcp -s xxx.xxx.xx.xxxx/21 --dport 5665 -j ACCEPT -m comment --comment "Icinga listens for agents." -A INPUT -m state --state NEW -m tcp -p tcp -s xxx.xxx.xx.xx/21 -m multiport --dports 80,443 -j ACCEPT -m comment --comment "Icinga listens for http(s) connections."
reload firewall and check
iptables-restore < /etc/sysconfig/iptables iptables -L -n -v --line-numbers | grep Icinga
github? no github, please.
for github
open firewall rules here
at this point Icingaweb2 should be accessible via browser
proceed with setup instractions, provided by wizard
provide token generate earlier or, you forgot it already, recall it with:
icingacli setup token show
check that icinga is happy with internal checks
I got:
The PHP module Imagick is missing.
but will work on it in the future.
plan, how authentication will happen on your instance and apply chosen way
local authentication = "database" scenario earlier created)
Authentication Type: Database [next] Resource Name: icingaweb2 Database Type: MySQL Host: localhost Database name: icingaweb2 Username: icingaweb2 Passowrd: (pass)
if you know what are you doing, specify yours, other very advised to use:
Character Set: utf8mb4 [Validate configuration] "The configuration has been successfully validated." [next] Authentication Backend: Backend Name: icingaweb2 [next]
create admin user in icingaweb2
Administration Username: admin Password: (newpass) Repeat password: (repeat newpass) [next]
application configuration left untoched
Show Stacktraces [x] Show Application State Messages [x] User Preference Storage Type: database logging type: syslog logging level: error application prefix: icingaweb2 facility: user [next] [next] [next]
Monitoring Backend Backend Name: icinga Backend Type: IDO [next]
now it is time to tell to IcingaWeb2 where Icinga2 stores its data
Monitoring IDO Resource Resource Name: icinga_ido Database Type: MySQL Host: localhost Port: Database Name: icinga Username: icinga Password: (pass) Character Set: utf8mb4 [validate configuration]
The configuration has been successfully validated.
Validation Log
Connection to icinga as icinga on localhost: successful
have_ssl: DISABLED
protocol_version: 10
version: 10.3.27-MariaDB
version_compile_os: Linux
[next]
how do we going to tell icinga instance what to do
Command Transport Transport Name: icinga2 Transport Type: Icinga 2 API Host: localhost Port: 5665
created earlier
API Username: icingaweb2 API Password: (pass) [validate configuration]
The configuration has been successfully validated.
[next] Protected Custom Variables: pw,pass,community [next] [finish]
Congratulations! Icinga Web 2 has been successfully set up.
[Login to Icinga Web 2]
!! ready !! login with your admin account
#
installing director (adding hosts/services)
#
assuming at this point that firewall is opened towards github servers
iptables-restore < /etc/sysconfig/iptables iptables -L -n -v --line-numbers | grep git 5 0 0 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 multiport dports 80,443 tcp match-set github dst
easy way:
yum install git
installing required module dependencies first
https://github.com/Icinga/icingaweb2-module-ipl/blob/master/README.md
check for latest release number and adjust MODULE_VERSION variable below:
https://github.com/Icinga/icingaweb2-module-ipl/releases
prepare download directory to avoid mess and keep places clean and tidy
sudo cd mkdir -p downloads/modules4icinga cd downloads/modules4icinga/
check that icingaweb2 modules directory exists and is not empty:
ls -la /usr/share/icingaweb2/modules
create installation script
vi install_icinga_module.sh ---snip---
paste following code below:
#
2020 01 27 + init: this script written to install/update modules for icinga /A
#
MODULES_PATH="/usr/share/icingaweb2/modules"
https://github.com/Icinga/icingaweb2-module-ipl/releases
MODULE_NAME=ipl MODULE_VERSION=v0.5.0 REPO="https://github.com/Icinga/icingaweb2-module-${MODULE_NAME}" rm -rf ${MODULES_PATH}/${MODULE_NAME} git clone ${REPO} "${MODULES_PATH}/${MODULE_NAME}" --branch "${MODULE_VERSION}" icingacli module enable "${MODULE_NAME}"
https://github.com/Icinga/icingaweb2-module-incubator/releases
MODULE_NAME=incubator MODULE_VERSION=v0.6.0 REPO="https://github.com/Icinga/icingaweb2-module-${MODULE_NAME}" rm -rf ${MODULES_PATH}/${MODULE_NAME} git clone ${REPO} "${MODULES_PATH}/${MODULE_NAME}" --branch "${MODULE_VERSION}" icingacli module enable "${MODULE_NAME}"
https://github.com/Icinga/icingaweb2-module-reactbundle/releases
MODULE_NAME=reactbundle MODULE_VERSION=v0.8.0 REPO="https://github.com/Icinga/icingaweb2-module-${MODULE_NAME}" rm -rf ${MODULES_PATH}/${MODULE_NAME} git clone ${REPO} "${MODULES_PATH}/${MODULE_NAME}" --branch "${MODULE_VERSION}" icingacli module enable "${MODULE_NAME}"
https://github.com/Icinga/icingaweb2-module-director/releases
MODULE_NAME=director MODULE_VERSION=v1.8.0 REPO="https://github.com/Icinga/icingaweb2-module-${MODULE_NAME}" rm -rf ${MODULES_PATH}/${MODULE_NAME} git clone ${REPO} "${MODULES_PATH}/${MODULE_NAME}" --branch "${MODULE_VERSION}" icingacli module enable "${MODULE_NAME}"
ls -la ${MODULES_PATH} icingacli module list echo "Done." ---snip---
make script executable and run it (you will need it in the future to update modules)
chmod +x ./install_icinga_module.sh ./install_icinga_module.sh [...] ---snip--- total 4 drwxr-xr-x. 10 root root 130 Jan 27 15:17 . drwxr-xr-x. 7 root root 80 Jan 27 10:58 .. drwxr-xr-x. 11 root root 4096 Jan 27 15:17 director drwxr-xr-x. 6 root root 124 Jan 27 10:58 doc drwxr-xr-x. 6 root root 232 Jan 27 15:17 incubator drwxr-xr-x. 6 root root 205 Jan 27 15:17 ipl drwxr-xr-x. 7 root root 136 Jan 27 10:58 monitoring drwxr-xr-x. 5 root root 169 Jan 27 15:17 reactbundle drwxr-xr-x. 5 root root 71 Jan 27 10:58 setup drwxr-xr-x. 5 root root 70 Jan 27 10:58 translation MODULE VERSION STATE DESCRIPTION director 1.8.0 enabled Director - Config tool for Icinga 2 doc 2.8.2 enabled Documentation module incubator 0.6.0 enabled Incubator provides bleeding-edge libraries ipl v0.5.0 enabled The Icinga PHP library monitoring 2.8.2 enabled Icinga monitoring module reactbundle 0.8.0 enabled ReactPHP-based 3rd party libraries
Done. ---snip---
https://github.com/Icinga/icingaweb2-module-director/blob/master/doc/02-Installation.md
installing module dependencies (repeat until Dependencies resolved. Nothing to do. Complete!)
yum install php-mysqlnd php-curl php-iconv php-pcntl php-process php-sockets php-mbstring php-json
create database for director
mysql -u root -p
add resource (specify character set is lowercase 'utf8', utf8mb4 will not work (for time of writing, 2021 01 27 /A)):
CREATE DATABASE director CHARACTER SET 'utf8'; GRANT ALL ON director.* TO director@localhost IDENTIFIED BY 'newpass'; Icingaweb2, Configuration, Application, Resources, [Create New Resource] Resource Type: SQL Database Resource Name: director Database Type: MySQL Host: localhost Port: Database name: director Username: director Password: director Character set: utf8 [validate configuration]
The configuration has been successfully validated.
Validation Log
Connection to director as director on localhost: successful
have_ssl: DISABLED
protocol_version: 10
version: 10.3.27-MariaDB
version_compile_os: Linux
[save changes]
configure icinga director
icingaweb2, Configuration, Modules, director, Configuration DB resource: director_db [create database schema]
kickstart wizard (if fresh install you do not need to import anything)
endpoint: (hostname), if not sure, use FQDN here hostname: (hostname), if not sure, use FQDN here Port: 5665 API user: icingaweb2 Password: (pass)
configuring daemon
useradd -r -g icingaweb2 -d /var/lib/icingadirector -s /bin/false icingadirector install -d -o icingadirector -g icingaweb2 -m 0750 /var/lib/icingadirector cp "/usr/share/icingaweb2/modules/director/contrib/systemd/icinga-director.service" /etc/systemd/system/ systemctl daemon-reload systemctl enable icinga-director && systemctl start icinga-director && systemctl status icinga-director
check in icinga instance, should be fine now:
https://(host)/icingaweb2/director/health https://(host)/icingaweb2/director/daemon
at this point we need to create master in new zone
firstly empty everything from zones and certs
rm /var/lib/icinga2/certs/* rm -rf /var/lib/icinga2/api/zones/* rm -rf /var/lib/icinga2/api/zones/zones-stage/*
start configuration
icinga2 node wizard ---snip--- Welcome to the Icinga 2 Setup Wizard! We will guide you through all required configuration details. Please specify if this is an agent/satellite setup ('n' installs a master setup) [Y/n]: n Starting the Master setup routine... Please specify the common name (CN) [(hostname)]: (hostname) Reconfiguring Icinga... Checking for existing certificates for common name '(hostname)'... Certificates not yet generated. Running 'api setup' now. Generating master configuration for Icinga 2. 'api' feature already enabled. Master zone name [master]: (new zone name) Default global zones: global-templates director-global Do you want to specify additional global zones? [y/N]: n Please specify the API bind host/port (optional): Bind Host []: Bind Port []: Do you want to disable the inclusion of the conf.d directory [Y/n]: Disabling the inclusion of the conf.d directory... Checking if the api-users.conf file exists... Done. Now restart your Icinga 2 daemon to finish the installation! ----snip--- systemctl restart icinga2
new cert should be generated in
ls -la /var/lib/icinga2/certs
kickstarter to import freshly defined master configuration
icingaweb2, configuration, modules, director, configuration kickstart wizard: endpoint name: (hostname of master) icinga host: localhost port: 5665 API user: icingaweb2 password: (pass) [Run import]
examine that only necessary objects are imported
(clean installation on moment of writing contains about 241 object creations/modifications)
icingaweb2, icinga director, activity log
on last page you should see your freshly zone created
when sure, deploy configuration
icingaweb2, icinga director, activity log, [Deploy 241 pending changes]
you should see new config files appeared in
ls -la /var/lib/icinga2/api/zones
during node setup, ticketsalt should be generated, but
check that it is updated, otherwise generate and modify file
vi /etc/icinga2/constants.conf
during node setup, wizard ask to disable default checks, otherwise
mv /etc/icinga2/conf.d/services.conf /etc/icinga2/conf.d/services.conf.20191021
uncomment and enable, set 'true'
vi /etc/icinga2/features-enabled/api.conf ticket_salt = TicketSalt
enable features
icinga2 feature enable command icinga2 feature enable perfdata
notifications
yum install postfix systemctl enable postfix && systemctl start postfix && systemctl status postfix icinga2 feature enable notification && systemctl restart icinga2
selinux
semanage fcontext -a -t nagios_notification_plugin_exec_t "/data/home/icinga/checks/local(/.*)?" restorecon -R /data/home/icinga/checks/local/
module: reporting
download https://github.com/Icinga/icingaweb2-module-reporting/archive/master.zip upload cd /usr/share/icingaweb2/modules install -d -m 0755 "${ICINGAWEB_MODULEPATH}/reporting" unzip mysql -u root -p CREATE DATABASE reporting; GRANT SELECT, INSERT, UPDATE, DELETE, DROP, CREATE VIEW, INDEX, EXECUTE ON reporting.* TO reporting@localhost IDENTIFIED BY '(pass)';
create template table first, otherwise 1005 error, cause key does not exist
mysql -p -u root reporting < schema/mysql.sql Configuration -> Application -> Resources menu > create new resouce. icingaweb_reporting_db, reporting, reporting, utf8mb4. Configuration -> Modules -> reporting -> Backend, icingaweb_reporting_db cp /usr/share/icingaweb2/modules/reporting/config/systemd/icinga-reporting.service /etc/systemd/system/icinga-reporting.service systemctl enable icinga-reporting.service systemctl start icinga-reporting.service (pdfexport requires https://github.com/Icinga/icingaweb2-module-pdfexport/blob/master/doc/02-Installation.md)
#######################################################################################
script installation
check connectivity
curl -k -s -m 2 https://(host):5665/ >/dev/null && echo "5665 OK" || echo "5665 NOT OK"
(host): add repo to host
yum repolist yum install icinga2 nagios-plugins-all
download host/agent/script, execute ./icinga.sh
icinga2 feature enable command api icinga2 feature disable checker systemctl enable icinga2 && systemctl restart icinga2
console installation from node
(host):/data/home/(you)# icinga2 node wizard Welcome to the Icinga 2 Setup Wizard! We will guide you through all required configuration details. Please specify if this is an agent/satellite setup ('n' installs a master setup) [Y/n]: Y Starting the Agent/Satellite setup routine... Please specify the common name (CN) [(host)]: Please specify the parent endpoint(s) (master or satellite) where this node should connect to: Master/Satellite Common Name (CN from your master/satellite node): (host) Do you want to establish a connection to the parent node from this node? [Y/n]: y Please specify the master/satellite connection information: Master/Satellite endpoint host (IP address or FQDN): (host) Master/Satellite endpoint port [5665]: Add more master/satellite endpoints? [y/N]: n Parent certificate information: Subject: CN = (host) Issuer: CN = Icinga CA Valid From: Sep 29 11:23:06 2019 GMT Valid Until: Sep 25 11:23:06 2034 GMT Fingerprint: 39 60 1B AE D0 93 1E 36 89 4E 5E 04 E1 C5 80 1B 57 CC 0C D6 Is this information correct? [y/N]: y Please specify the request ticket generated on your Icinga 2 master (optional). (Hint: # icinga2 pki ticket --cn '(host)'): 8bc7aa3167870788b8xxx85b8fe1f5310ffbd Please specify the API bind host/port (optional): Bind Host []: Bind Port []: Accept config from parent node? [y/N]: y Accept commands from parent node? [y/N]: y Reconfiguring Icinga... Disabling feature notification. Make sure to restart Icinga 2 for these changes to take effect. Enabling feature api. Make sure to restart Icinga 2 for these changes to take effect. Local zone name [(host)]: Parent zone name [master]: (host) Default global zones: global-templates director-global Do you want to specify additional global zones? [y/N]: n Do you want to disable the inclusion of the conf.d directory [Y/n]: Disabling the inclusion of the conf.d directory... Done.
Now restart your Icinga 2 daemon to finish the installation!
(host):/data/home/(you)# systemctl restart icinga2 icinga2 feature enable command api icinga2 feature disable checker systemctl restart icinga2