update readme - make open source

server_config.md

@@ -0,0 +1,89 @@
+# Issues encountered
+- Building the client files fails with not enough ram
+- It runs out of ram on a Centos vps so I needed to add more swap space
+- https://www.digitalocean.com/community/tutorials/how-to-add-swap-on-centos-7
+
+# Installing Elixir on Centos 7
+Update the system
+```
+sudo yum install epel-release
+sudo yum update
+sudo reboot
+```
+
+Install Erlang
+```
+wget https://packages.erlang-solutions.com/erlang/esl-erlang/FLAVOUR_1_general/esl-erlang_20.2.2-1~centos~7_amd64.rpm
+sudo rpm -Uvh ./esl-erlang_20.2.2-1~centos~7_amd64.rpm
+sudo yum install erlang
+```
+
+Install Elixir
+```
+mkdir -p /usr/bin/elixir
+sudo wget https://github.com/elixir-lang/elixir/releases/download/v1.5.2/Precompiled.zip
+sudo yum install unzip
+sudo unzip Precompiled.zip
+export PATH=$PATH:/usr/bin/elixir/bin
+```
+
+Might have to install GCC - needed for comonin/argon2
+```
+yum group install "Development Tools"
+```
+
+# Hosting on Vultr
+
+### Centos setup from scratch
+[Enable private networking](https://www.vultr.com/docs/configuring-private-network)
+```
+/etc/sysconfig/network-scripts/ifcfg-eth1
+
+DEVICE=eth1
+ONBOOT=yes
+NM_CONTROLLED=no
+BOOTPROTO=static
+IPADDR=<ip>
+NETMASK=<netmask>
+IPV6INIT=no
+    MTU=1450
+```
+
+Disable firewalld (make sure firewall is enabled in vultr config)
+```
+systemctl disable firewalld
+```
+
+Install and start postgresql
+```
+sudo yum install postgresql-server postgresql-contrib
+sudo postgresql-setup initdb
+sudo systemctl start postgresql
+sudo systemctl enable postgresql
+```
+
+Configure user
+```
+sudo passwd postgres
+su postgres
+psql -d template1 -c "ALTER USER postgres WITH PASSWORD 'newpassword';"
+```
+
+
+Allow connections on all interfaces
+```
+/var/lib/pgsql/data/postgresql.conf
+
+listen_address='*'
+```
+
+```
+/var/lib/pgsql/data/pg_hba.conf
+
+host    all     all     0.0.0.0/0        md5
+```
+
+# Database backup script
+```
+ssh -i ./prod_ssh_key root@<addr> 'su - postgres -c "pg_dump -U postgres myapp_prod"' >> "$(date +"%Y_%m_%d_%I_%M_%p")backup.sql"
+```