Course Project: Build Mini-stackoverflow API
# remove ssh host-key
ssh-keygen -R [ip]
# enter then instance using ssh
ssh -i [path ot ssh private key file] [ubuntu/root]@[ip]# intstall curl
sudo apt-get install curl
# install Nodejs on Ubuntu
curl -sL https://deb.nodesource.com/setup_12.x | sudo -E bash -
sudo apt-get install -y nodejs
# install Nginx on Ubuntu
sudo apt-get install nginx
## For send big entity, need to modify nginx config file: /etc/nginx/sites-available/default
sudo nano /etc/nginx/nginx.conf
# Add these two lines
client_max_body_size 200M;
client_body_buffer_size 16k;install RabbitMQ(https://www.rabbitmq.com/install-debian.html)
# remove postfix if you have
which postfix --> check
sudo systemctl stop postfix
sudo apt-get remove postfix && apt-get purge postfix
sudo apt-get install sendmail
# configure sendmail service
sudo sendmailconfig#intall JDK for elasticsearch
## install it for using add-repository, /etc/apt/sources.list.d
sudo apt-get install software-properties-common
sudo add-apt-repository ppa:linuxuprising/java
apt-get install oracle-java11-installer
cd /etc/apt/sources.list.d
## install elasticsearch
wget -qO - https://artifacts.elastic.co/GPG-KEY-elasticsearch | sudo apt-key add -
sudo echo "deb https://artifacts.elastic.co/packages/7.x/apt stable main" | sudo tee -a /etc/apt/sources.list.d/elastic-7.x.list
sudo apt-get install apt-transport-https
sudo apt-get install elasticsearch
service elasticsearch start/status
## configure elasticsearch's yml file
sudo nano /etc/elasticsearch/elasticsearch.yml
## simple check elasticserach
curl -X GET "localhost:9200"
# install pm2
sudo apt-get update
sudo npm install pm2 -g# Install GO
sudo apt-get install golang
mkdir ~/go; echo "export GOPATH=$HOME/go" >> ~/.bashrc
echo "export PATH=$PATH:$HOME/go/bin:/usr/local/go/bin" >> ~/.bashrc
# restart bashrc
source ~/.bashrc
# install monstache
echo "export PATH=$HOME/build/linux-amd64:$PATH" >> ~/.bashrc
# restart bashrc
source ~/.bashrc# listening only for TCP connections
netstat -tulpn
sudo netstat -ntlp | grep LISTEN
## About Java
sudo update-alternatives --config java
sudo nano /etc/environment # --- JAVA_HOME="/usr/lib/jvm/java-8-oracle/jre/bin/"
source /etc/environment
# clean log memory
sync; sudo sh -c "echo 3 > /proc/sys/vm/drop_caches"# Sub-process /usr/bin/dpkg returned an error code (1)
sudo dpkg --configure -a
# if cqlsh localhost refuse
export CQLSH_NO_BUNDLED=true- Conf file: /etc/mongod.conf
- Allow remote access: bingIP: 0.0.0.0
- Con file /etc/nginx/sites-available/default location / { proxy_pass http://localhost:3000; proxy_http_version 1.1; proxy_set_header Upgrade $http_upgrade; proxy_set_header Connection 'upgrade'; proxy_set_header Host $host; proxy_cache_bypass $http_upgrade; }
#configure yml file and check if works: host_ip: 0.0.0.0
sudo nano /etc/elasticsearch/elasticsearch.yml
curl -X GET "localhost:9200"monstache -f mongo-elastic.toml -worker worker1 & monstache -f mongo-elastic.toml -worker worker2 &monstache -f mongo-elastic.toml -worker worker3
workers = ["worker1","worker2","worker3"]
mongo-url = "mongodb://localhost:27017"
elasticsearch-urls = ["http://localhost:9200"]
prune-invalid-json=true
index-as-update = true
change-stream-namespaces = ['firewall.questions']
dropped-collections = true
dropped-databases = true
replay = false
resume = true
resume-name = "default"
resume-write-unsafe = false
#verbose = true
exit-after-direct-reads = false
[[mapping]]
namespace = "firewall.questions"
index = "questions"
type = "questions_type"
[[script]]
namespace = "firewall.questions"
script = """
module.exports = function(doc){
if(doc.user){
doc.user = findId(doc.user, {
database: "firewall",
collection: "users",
select:{
_id: 0,
username:1,
reputation: 1
}
})
}
if(doc.accepted_answer_id == null){
doc.accepted_answer_id = [];
}
doc.score = (doc.upvote).length - (doc.downvote).length;
doc.view_count = (doc.viewers).length;
doc.answer_count = (doc.answers).length;
return _.omit(doc,"viewers", "answers", "upvote", "downvote");
}
""" http.compression: true
thread_pool:
bulk:
queue_size: 500 
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