ehh. I'm sorry.

.gitignore

@@ -4,4 +4,5 @@ __pycache__
 .vscode
 clusters.json
 /nginx
-/autossl
+/autossl
+.env

README.md

@@ -1,9 +1,21 @@
 # Nginx configurator (patent for that name is pending...)
 
 # TODO
-* Add a way to generate autoincrementing config ID
-* document dhparam.pem generation
- 
+* Prepare config templates for nginx and dehydrated?
+* document dhparam.pem generation (`openssl dhparam -out ssl-dhparams.pem 4096` in /etc/autossl)
+* Limit current SSH keys to only config rsync and nginx reload
+* Write down how it works in human language
+* Create a guide how to use it to intrawiki
+* Teach everybody how to use it...
+
+# Setup
+* `python3 -m venv .venv`
+* `source .venv/bin/activate`
+* `pip3 install -r ./requirements.txt`
+* `cp env.sample .env` # and customize to your needs
+
+
+
 
 # Contributions
 Please use `black` formatter. 

env.sample

@@ -0,0 +1,5 @@
+NGINX_DIR="/etc/nginx"
+DOMAINS_TXT="/etc/autossl/domains.txt"
+DEHYDRATED_LOC="/etc/autossl/dehydrated.sh"
+REMOTE="10.0.0.1"
+REMOTE_SSH_KEY="./ssh.key"

n_gen.py

@@ -1,18 +1,34 @@
+import os
 import json
 import pyinputplus as pyip
 from jinja2 import Environment, PackageLoader, select_autoescape
+from dotenv import load_dotenv
+import n_ssl
 
 # Get clusters from json config
 with open("clusters.json") as json_file:
     CLUSTERS = json.load(json_file)["clusters"]
 
 # Setup Jinja2
-jin = Environment(loader=PackageLoader("n-gen"), autoescape=select_autoescape())
+jin = Environment(loader=PackageLoader("n_gen"), autoescape=select_autoescape())
 
-# ID of next config - TBD - read this from list of configs and increment!
-CONF_ID = 1
+load_dotenv() 
+NGINX_DIR = os.getenv('NGINX_DIR')
 
 
+# Go through config names and find highest config number. Increment by 1 and use as new ID
+def get_conf_id(nginx_dir):
+    list_auto = os.listdir(nginx_dir + "/sites/auto")
+    list_custom = os.listdir(nginx_dir + "/sites/custom")
+    domain_list = list_auto + list_custom
+    last_id = 0
+    for dom in domain_list:
+        id = int(dom.split('-')[0])
+        if id > last_id:
+            last_id = id
+    new_id = last_id + 1
+    return(new_id)
+
 def get_domains():
     new_domain = True
     domains = []
@@ -85,26 +101,59 @@ def input_check(domains, upstreams, port, proto):
         exit()
 
 
-def fill_template(id, domains, upstreams, port, proto):
+def create_nginx_config(id, domains, upstreams, port, proto):
     template = jin.get_template("nginx-site.conf")
     return template.render(
         id=id, domains=domains, upstreams=upstreams, port=port, proto=proto
     )
 
+def write_nginx_config(config, nginx_dir, domains, conf_id):
+    filename = str(conf_id) + "-" + domains[0] + ".conf"
+    path = nginx_dir + "/sites/auto/" + filename
+    with open(path, "w") as conf_file:
+        conf_file.write(config)
+
+def create_ssl_config(conf_id):
+    template = jin.get_template("ssl.conf")
+    return template.render(id=conf_id)
+
+def write_ssl_config(config, conf_id, nginx_dir):
+    filename = str(conf_id) + ".conf"
+    path = nginx_dir + "/ssl/" + filename
+    with open(path, "w") as conf_file:
+        conf_file.write(config)
+
+def ssl_continue():
+    if pyip.inputYesNo("Do you want to prepare ssl certs and replicate the config? (y/n) ") == "yes":
+        n_ssl.main()
+    else:
+        print("Ok, you can run n_ssl.py to do it later.")
+        exit()
 
 def main():
     print("This script will generate nginx configuration and for new service.\n")
+    conf_id = get_conf_id(NGINX_DIR)
     domains = get_domains()
     upstreams = get_upstreams(CLUSTERS)
     port = get_port()
     proto = get_proto()
     input_check(domains, upstreams, port, proto)
-    print(fill_template(CONF_ID, domains, upstreams, port, proto))
+    nginx_config = create_nginx_config(conf_id, domains, upstreams, port, proto)
+    write_nginx_config(nginx_config, NGINX_DIR, domains, conf_id)
+
+    ssl_config = create_ssl_config(conf_id)
+    write_ssl_config(ssl_config, conf_id, NGINX_DIR)
+
+    print("Nginx config created.")
+    ssl_continue()
+
+
 
 
 # def test():
-#     print(fill_template("1110", ['nolog.cz', 'www.nolog.cz'], ['10.0.0.1', '10.0.0.2'], 80, 'https://'))
+#     print(create_nginx_config("1110", ['nolog.cz', 'www.nolog.cz'], ['10.0.0.1', '10.0.0.2'], 80, 'https://'))
 
 if __name__ == "__main__":
     main()
-    # test()
+
+    

n_ssl.py

@@ -1,16 +1,19 @@
 import os
 import subprocess
 import re
+import sysrsync
+from dotenv import load_dotenv
 
 # NGINX_DIR="/etc/nginx"
 # DOMAINS_TXT = "/etc/autossl/domains.txt"
 # DEHYDRATED_LOC = "/etc/autossl/dehydrated.sh"
 
-NGINX_DIR = "./nginx"
-DOMAINS_TXT = "./autossl/domains.txt"
-DEHYDRATED_LOC = "./autossl/dehydrated.sh"
-
-REMOTE = "10.55.55.55"  # make a .env variable or something like that. It will be different on each server
+load_dotenv() 
+NGINX_DIR = os.getenv('NGINX_DIR')
+DOMAINS_TXT = os.getenv('DOMAINS_TXT')
+DEHYDRATED_LOC = os.getenv('DEHYDRATED_LOC')
+REMOTE = os.getenv('REMOTE')
+REMOTE_SSH_KEY = os.getenv('REMOTE_SSH_KEY')
 
 
 def create_domfile():
@@ -70,22 +73,51 @@ def reload_local_nginx():
         exit()
 
 
-def remote_replication(remote):
-    # Do RSYNC to second server
-    return True
+def remote_replication(remote, ssh_key):
+    # Copy nginx config to second server
+    sysrsync.run(
+        source="/etc/nginx/",
+        destination="/etc/nginx/",
+        destination_ssh=remote,
+        private_key=ssh_key,
+        options=["-a"],
+    )
+    # Copy certificates to second server
+    sysrsync.run(
+        source="/etc/autossl/",
+        destination="/etc/autossl/",
+        destination_ssh=remote,
+        private_key=ssh_key,
+        options=["-a"],
+    )
 
 
-def remote_reload(remote):
+def remote_reload(remote, ssh_key):
     # Check and reload nginx on second server
-    return True
+    nginx_check = subprocess.run(
+        ["ssh", "-i", ssh_key, remote, "nginx", "-t"], capture_output=True, text=True
+    )
+    if nginx_check.returncode != 0:
+        print("Remote nginx config is not valid! Please check manually.")
+        print(nginx_check.stdout)
+        return False
+    else:
+        nginx_reload = subprocess.run(
+            ["ssh", "-i", ssh_key, remote, "systemctl", "reload", "nginx.service"],
+            capture_output=True,
+            text=True,
+        )
+        if nginx_reload.returncode != 0:
+            print("Remote nginx reload failed, please check manually.")
+            print(nginx_reload.stdout)
 
 
 def main():
-    # create_domfile()
+    create_domfile()
     request_cert()
     reload_local_nginx()
-    remote_replication(REMOTE)
-    remote_reload(REMOTE)
+    remote_replication(REMOTE, REMOTE_SSH_KEY)
+    remote_reload(REMOTE, REMOTE_SSH_KEY)
 
 
 if __name__ == "__main__":

new_service.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+
+kill -s $(keepalived --signum=DATA) $(cat /var/run/keepalived.pid)
+STATE=$(cat /tmp/keepalived.data |grep MASTER)
+
+if [[ -z "${STATE}" ]]; then
+	echo "This is a secondary backup server, run the script on current master"
+else
+	python3 n_gen.py
+fi

requirements.txt

@@ -1,2 +1,4 @@
 pyinputplus
-Jinja2
+Jinja2
+sysrsync
+python-dotenv

templates/nginx-site.conf

@@ -1,5 +1,5 @@
 # ID: {{ id }}
-# Service configured by nxa.py
+# Service configured by n_gen.py
 
 upstream up_{{ id }} {
 {%- for upstream in upstreams %}