electrumx_install(ubuntu16.04)

## monacoin.confの内容
rpcuser=wakiyamatamamichankawaii
rpcpassword=[適当にパスワードどうぞ]
daemon=1
txindex=1
addressindex=1
spentindex=1
server=1


## ライブラリ等追加
sudo add-apt-repository ppa:deadsnakes/ppa
sudo apt-get update && sudo apt-get install python3.7 python3.7-dev
sudo apt-get install git python3.7-distutils libleveldb-dev
wget https://bootstrap.pypa.io/get-pip.py
python3.7 get-pip.py
sudo pip3 install setuptools --upgrade


## electrumxユーザー追加
sudo adduser electrumx --disabled-password

## electrumxをgitで持ってくる
git clone https://github.com/kyuupichan/electrumx.git

## electrumxインストール (python3 setup.py installでやると3.5でインストールされるのでアウト)
cd ~/electrumx
sudo python3.7 setup.py install

## electrumx設定ファイル設置用フォルダ作成 & 権限追加
sudo mkdir /var/electrumx
sudo chown electrumx /var/electrumx

## systemdの設定ファイル
cd contrib/systemd
sudo cp electrumx.service /etc/systemd/system/

## SSLの設定　5個目のコマンドで出てくるのは俺俺証明書なら何でもいい。
cd /etc
sudo openssl genrsa -des3 -passout pass:x -out server.pass.key 2048
sudo openssl rsa -passin pass:x -in server.pass.key -out server.key
sudo rm server.pass.key
sudo openssl req -new -key server.key -out server.csr
sudo openssl x509 -req -days 1825 -in server.csr -signkey server.key -out server.crt


## /etc/electrumx.confで作成
## electrumx.confの設定　めんどくさいなら中身コピペでもOK。ただしDAEMON_URLとREPORT_SERVICESは変えること。DONATION_ADDRESSは変えてもそのままでも良いぞ！
# electrumx.conf設定ここから下

    DB_DIRECTORY = /var/electrumx
    USERNAME = electrumx
    ELECTRUMX = /usr/local/bin/electrumx_server

    #Bitcoin Node RPC Credentials
    DAEMON_URL = http://user:pass@IPaddress:port/
        #port is optional, defaults to COIN RPC default

#
#REQUIRED FOR PUBLIC VISIBILITY
#

        #Requires
        SSL_CERTFILE = /etc/server.crt
        SSL_KEYFILE = /etc/server.key

#
#OPTIONAL VISIBILITY
#

    BANNER_FILE = /etc/electrumx.banner
    DONATION_ADDRESS = MEmGfo7cgRNM3kAHqVkcbesWVrBo7DoEbU

    SERVICES = tcp://:50001,ssl://:50002,wss://:50004,rpc://

    # sv.usebsv.comを書き換えてelectrumxネットワークにreportしたいドメイン、IPアドレスに書き換える
    REPORT_SERVICES = tcp://sv.usebsv.com:50001,ssl://sv.usebsv.com:50002,wss://sv.usebsv.com:50004
    LOG_SESSIONS = 0

#
#MISC
#
    COIN = Monacoin
    #NETWORK = mainnet
    #DB_ENGINE = leveldb
        #leveldb, rocksdb, lmdb (You'll need to install appropriate python packages)

    #REORG_LIMIT = 200
        #maximum number of blocks to be able to handle in a chain
        #reorganisation.  ElectrumX retains some fairly compact
        #undo information for this many blocks in levelDB.

    #ANON_LOGS =
         #Set to anything non-empty to remove IP addresses from logs.


#These following environment variables are to help limit server
#resource consumption and to prevent simple DoS.  Address subscriptions
#in ElectrumX are very cheap - they consume about 100 bytes of memory
#each and are processed efficiently.  I feel the defaults are low and
#encourage you to raise them.

    MAX_SEND = 5000000
    SESSION_TIMEOUT = 1800
    MAX_SESSIONS = 2000

#If synchronizing from the Genesis block your performance might change
#by tweaking the following cache variables.  Cache size is only checked
#roughly every minute, so the caches can grow beyond the specified
#size.  Also the Python process is often quite a bit fatter than the
#combined cache size, because of Python overhead and also because
#leveldb consumes a lot of memory during UTXO flushing.  So I recommend
#you set the sum of these to nothing over half your available physical
#RAM:

    #HIST_MB = 300
        #amount of history cache, in MB, to retain before flushing to
        #disk.  Default is 300; probably no benefit being much larger
        #as history is append-only and not searched.

    #UTXO_MB = 1000
       #amount of UTXO and history cache, in MB, to retain before
       #flushing to disk.  Default is 1000.  This may be too large
       #for small boxes or too small for machines with lots of RAM.
       #Larger caches generally perform better as there is
       #significant searching of the UTXO cache during indexing.
       #However, I don't see much benefit in my tests pushing this
       #too high, and in fact performance begins to fall.  My
       #machine has 24GB RAM; the slow down is probably because of
       #leveldb caching and Python GC effects.  However this may be
       #very dependent on hardware and you may have different
       #results.

######

# electrumx.conf設定ここから上まで

## electumxのバナー作成、中身はお好きに(electrumクライアントのコンソールで接続時に出るやつ)
sudo nano /etc/electrumx.banner


## ここから運用編

## systemd起動関係コマンド
sudo systemctl start electrumx #起動
sudo systemctl stop electrumx #終了
sudo systemctl restart electrumx #再起動

## ログ確認 ctrl+Cで終了
journalctl -u electrumx -f

## システムアップデート方法
systemd使用時
設定ファイルは/var/electrumx,/etc/electrumxにあるので最悪ホームディレクトリ内にあるであろうelectrumxディレクトリは削除してもOK
daemontools使用時
/contrib/daemontools/env/配下に設定ファイルがあるので注意。バックアップを取っておくこと
基本的にはelectrumxディレクトリ内でgit pullで事足りる。
先にコミットしろ云々言われた際には最悪electrumxディレクトリ削除後、git cloneし直しでもOK。なお上記の点に注意せよ。

## let's encryptで証明書を取得する場合 
## 80,443を使っているソフトはする前にkillせよ
## firewallは80,443を開ける
sudo apt-get install letsencrypt
sudo letsencrypt certonly --standalone -d www.example.com #www.example.comは自分のelectrumxサーバのURL

##更新時
sudo /usr/bin/letsencrypt renew --force-renew

## electrumx_compact_historyの時々実行
## スクリプトを動かすroot権限が実行できる場所に置く
## from https://denariustalk.org/index.php?/profile/1583-manosv/content/&type=forums_topic_post&change_section=1
sudo nano /root/compact_electrum_database.sh

## compact_electrum_database.sh の内容ここから
#!/bin/bash
service electrumx stop

export DB_DIRECTORY='/var/electrumx'
export COIN=Monacoin
export DB_ENGINE=leveldb

electrumx_compact_history

chown -R electrumx:electrumx /var/electrumx

service electrumx start
## compact_electrum_database.sh の内容ここまで

sudo chmod +x /root/compact_electrum_database.sh
sudo crontab -u root -e

## crontabで出てきた内容の一番下に設置 1か月に1回/12日に1回
0 1 */12 * * /root/compact_electrum_database.sh >/dev/null 2>&1

## python3.6 からpython3.7に上げるユーザーへ
sudo apt remove python3.6-dev
sudo apt remove python3.6
sudo add-apt-repository --remove ppa:jonathonf/python-3.6
sudo add-apt-repository ppa:deadsnakes/ppa
sudo apt update
sudo apt install python3.7 python3.7-dev python3.7-distutils
wget https://bootstrap.pypa.io/get-pip.py
sudo python3.7 get-pip.py

## これを完了した後にgit cloneで落としてきたファイルでsetup.py installするとpython3.6の残り物がエラー吐くので
## electrumx/buildを消すか、もうめんどうなのでelectrumxディレクトリを消した後に再度electrumxをgit cloneするのがおすすめ