Running Healthchecks - A Cron Job Monitoring Service - In Docker

#Healthchecks #Cron #Docker

Full steps can be found at https://i12bretro.github.io/tutorials/0813.html

What is Healthchecks? Healthchecks is a cron job monitoring service. It listens for HTTP requests and email messages ("pings") from your cron jobs and scheduled tasks ("checks"). When a ping does not arrive on time, Healthchecks sends out alerts. Healthchecks comes with a web dashboard, API, 25+ integrations for delivering notifications, monthly email reports, WebAuthn 2FA support, team management features: projects, team members, read-only access. - https://github.com/healthchecks/healthchecks   Installing Docker    01. Log into the Linux based device    02. Run the following commands in the terminal          # install prerequisites          sudo apt install apt-transport-https ca-certificates curl software-properties-common gnupg-agent -y          # add docker gpg key          curl -fsSL https://download.docker.com/linux/$(awk -F'=' '/^ID=/{ print $NF }' /etc/os-release)/gpg | sudo apt-key add -          # add docker software repository          sudo add-apt-repository "deb [arch=$(dpkg --print-architecture)] https://download.docker.com/linux/$(awk -F'=' '/^ID=/{ print $NF }' /etc/os-release) $(lsb_release -cs) stable"          # install docker          sudo apt install docker-ce docker-compose containerd.io -y          # enable and start docker service          sudo systemctl enable docker && sudo systemctl start docker          # add the current user to the docker group          sudo usermod -aG docker $USER          # reauthenticate for the new group membership to take effect          su - $USER   Running the Healthchecks Container    01. Now that Docker is installed, run the following commands to setup the Healthchecks Docker container and run it          # create working directories          mkdir ~/docker/postresql -p && mkdir ~/docker/healthchecks -p          # create containers network          docker network create containers          # download the base configuration          wget -O ~/docker/healthchecks/.env https://raw.githubusercontent.com/healthchecks/healthchecks/master/docker/.env.example          # generate a 32 character random string          head /dev/urandom | LC_ALL=C tr -dc 'A-Za-z0-9' | head -c 32          # copy the output string to the clipboard          # edit the .env file          nano ~/docker/healthchecks/.env    02. Scroll through the .env file, updating at least the key/value pairs listed below          ALLOWED_HOSTS=*          ---          DB=postgres          DB_HOST=postgres          DB_NAME=healthchecks          DB_PASSWORD=He@lt4Ch3ck$!          DB_USER=healthchecks_rw          ---          DEFAULT_FROM_EMAIL=healthchecks@i12bretro.local          ---          EMAIL_HOST=smtp.i12bretro.local          EMAIL_HOST_PASSWORD=          EMAIL_HOST_USER=          EMAIL_PORT=25          EMAIL_USE_TLS=False          EMAIL_USE_VERIFICATION=False          ---          SECRET_KEY=≪% random string from clipboard %≫    03. Press CTRL+W and search for localhost    04. Update all references to localhost with the DNS or IP address of the docker host (ie SITE_ROOT=http://localhost:8000 -≫ http://ubuntuserver.local:8000)    05. Press CTRL+O, Enter, CTRL+X to write the changes to .env    06. Continue with the following commands in terminal          # set owner of working directories          sudo chown "$USER":"$USER" ~/docker -R          # run the postgresql docker container          docker run -d --name postgres -e POSTGRES_USER=healthchecks_rw -e POSTGRES_PASSWORD='He@lt4Ch3ck$!' -e POSTGRES_DB=healthchecks -v /home/$USER/docker/postresql:/var/lib/postgresql/data --network containers --restart=unless-stopped postgres          # run the healthchecks container          docker run -d --name healthchecks --env-file ~/docker/healthchecks/.env -p 8000:8000 --network containers --restart=unless-stopped healthchecks/healthchecks          # connect to healthchecks container shell          docker exec -ti healthchecks /bin/bash          # create an admin user          /opt/healthchecks/manage.py createsuperuser          # enter an email address          # enter and confirm a password          # exit the container shell          exit    07. Open a web browser and navigate to http://DNSorIP:8000    08. Login with the admin account created earlier    09. Welcome to HealthChecks   Documentation:  https://hub.docker.com/r/healthchecks/healthchecks  

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