本文关键字：云主机上装管理面板
在前面，我们介绍过lnmp,sandstorm paas，还有黑群晖，docker管理面板，这些都是云OS上的面板扩展和APPSTACK扩展，分散在不同级别被实现，（像群晖这种是OS和面板一体的），包括这里要介绍的pai和未来可能要介绍的openfaas云函数面板，基本可以分为二类，一带无devops无隔离，没有明显的虚拟化APP打包特征，像宝塔，lnmp，pai，APP直接在baremetal上运行，一带devops，基于容器。像docker管理面板，openfaas。都可以做所有通用服务应用不限web，里面基于容器的技术也都类同，不过vs sandstorm paas，openfaas是用标准容器方法达成的(vs真正的用统一语言和统一微内核做的那套，容器是我们当代伪applvl的virtualappliance做得最完善的了。)，更开放更devops。
所以谁说openfaas,sandstorm,lamp,dsm这样的规模的东西不是个os?openfaas cloud还有整合存储Minio，类似自建云函数+云存储的方案只不过个人难于负担存储部分只能寻求OD这样的替代。
好了不废话。
上次我们搞好了云主机装机的pebuilder.sh。这次来介绍云主机装机常用的服务器套件，一般这类产品有宝塔，wdcp,lnmp等，但是鉴于我们近期在研究云函数和serverless，这次我们找到了PAI，https://cloud.tencent.com/solution/pai，它在一台云主机上自动绑定一个cloudbase域名，并做了对小程序的自动鉴权（大约小程序对xxx.pai.cloudbase.com的域名自动鉴权，否则需要去小程序后台填自定义域名），集成了git拉取pai项目，自动certbot作ssl验证，当然，tx的servless产品主要有cloudbase（里面有云函数云存储云数据库）和wx ide。这个PAI并不能达到官方cloudbase提供的服务那么完整(自建云函数机制，支持云函数的event,context写法)，也不能做到让wx ide完全无缝对接（比如管理PAI上的云函数），这货吧有点像nodejs做的容器和devops，目前它只是自动鉴权方面有点强而已。其它只是一个通用服务器和不使用云函等的小程序后端，没发现什么亮点。
这个PAI它不是一个镜像也不是一个软件，而是需要购买时绑定的。下面我们把它安装在任意云主机上，甚至不是tx cvm也可以。这样我们就失去了那个免费http://xxx.pai.cloudbase.com三级域名和自动鉴权的好处，但是实际上用自己的域名和自动鉴权也不费事。关键是我们想看看pai有哪些程序可用。直接给脚本：
基础
注意使用说明：云主机事先开5523，并域名绑好到这个云主机上。以便程序内自动申请证书等工作。
一些变量：
MIRROR_PATH="http://default-8g95m46n2bd18f80.service.tcloudbase.com/d/demos"
# the pai backend
SERVER_PATH=${MIRROR_PATH}/pai/agent/stable/pai_agent_framework
PAI_MATE_SERVER_ROOT_PATH=${MIRROR_PATH}/pai/mate
PAI_MATE_SERVER_PATH=${MIRROR_PATH}/pai/mate/stable/install
TOOLS_PATH=${MIRROR_PATH}/pai/tools
安装依赖
apt-get install git nginx gcc python3.6 python3-pip python3-virtualenv python-certbot-nginx golang -y
单独安装node语言件：
# install node.js
installNodejs() {
echo "=====================node.js progress======================="
msg=$(wget -q ${TOOLS_PATH}/node-v10.16.2-linux-x64.tar.xz
tar -Jxvf node-v10.16.2-linux-x64.tar.xz -C /usr/local/
ln -sf /usr/local/node-v10.16.2-linux-x64 /usr/local/node
rm node-v10.16.2-linux-x64.tar.xz -f
# for manual launch node in shell maybe in the later
echo "export PATH=/usr/local/node/bin:$PATH" >> ${HOME}/.bashrc
wget -q ${TOOLS_PATH}/pm2-3.5.1.tgz
PATH=/usr/local/node/bin:$PATH npm install -g pm2-3.5.1.tgz
PATH=/usr/local/node/bin:$PATH npm install -g serve-handler
rm pm2-3.5.1.tgz -f
wget -q ${TOOLS_PATH}/sqlite3-4.1.1.tgz
PATH=/usr/local/node/bin:$PATH npm config set user 0
PATH=/usr/local/node/bin:$PATH npm config set unsafe-perm true
PATH=/usr/local/node/bin:$PATH npm install -g sqlite3-4.1.1.tgz
rm sqlite3-4.1.1.tgz -f 2>&1)
status=$?
updateProgress 10 "$msg" "$status" "node.js"
}
installNodejs
pai前后端基础支持
后端5523会透出管理页面，/data/pai-mate-workspace中的应用代理到nginx 3000，first time renew也是为了生成一个/etc/letsencrypt/renewal/下的模板文件供certbot-renew.service服务使用。 安装中，请保证certbot renew务必成功。否则后面的二个pai服务绝对启动不了。但如果成功，基本安装就能很好完成。
confignginx() {
echo "=====================certbot renew progress======================="
systemctl enable nginx.service
systemctl start nginx
cp -f /lib/systemd/system/certbot.service /etc/systemd/system/certbot-renew.service
cp -f /lib/systemd/system/certbot.timer /etc/systemd/system/certbot-renew.timer
# sed -i "s/renew/renew --nginx/g" /etc/systemd/system/certbot-renew.service
msg=$(
#first time renew
certbot certonly --standalone --agree-tos --non-interactive -m ${EMAIL_NAME} -d ${DOMAIN_NAME} --pre-hook "systemctl stop nginx"
systemctl daemon-reload
systemctl enable certbot-renew.service
systemctl start certbot-renew.service
systemctl start certbot-renrew.timer 2>&1)
status=$?
updateProgress 40 "$msg" "$status" "certbot renew"
echo "=====================nginx reconfig progress======================="
# add nginx conf
rm -rf /etc/nginx/conf.d/default.conf
cat << 'EOF' > /etc/nginx/conf.d/default.conf
server {
listen 443 http2 ssl;
listen [::]:443 http2 ssl;
server_name DOMAIN_NAME;
ssl on;
ssl_certificate /etc/letsencrypt/live/DOMAIN_NAME/fullchain.pem;
ssl_certificate_key /etc/letsencrypt/live/DOMAIN_NAME/privkey.pem;
ssl_session_timeout 5m;
ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
ssl_ciphers ECDHE-RSA-AES128-GCM-SHA256:HIGH:!aNULL:!MD5:!RC4:!DHE;
ssl_prefer_server_ciphers on;
location / {
proxy_redirect off;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
proxy_pass http://localhost:3000;
}
}
server {
listen 80;
server_name DOMAIN_NAME;
if ($host = DOMAIN_NAME) {
return 301 https://$host$request_uri;
}
return 404;
}
EOF
sed -i "s#DOMAIN_NAME#${DOMAIN_NAME}#g" /etc/nginx/conf.d/default.conf
# restart nginx
msg=$(systemctl reload nginx.service
systemctl restart nginx 2>&1)
status=$?
updateProgress 50 "$msg" "$status" "nginx reconfig"
}
confignginx
安装pai,paimate
installPai() {
echo "=====================paimate install progress======================="
mkdir -p ${HOME}/pai
echo "export PATH=/usr/local/node/bin:$PATH" > ${HOME}/pai/pai-mate-env
rm -rf /data/logs
sudo mkdir /data/logs
echo "Start installing PAI Mate!"
echo ${PAI_MATE_SERVER_PATH}
echo ${DOMAIN_NAME}
INSTALL_DIR="${HOME}/pai-mate"
# prepare directory
mkdir -p ${INSTALL_DIR}
msg=$(# download package
wget -qO- ${PAI_MATE_SERVER_PATH}/pai-mate-latest.tar.xz > ${INSTALL_DIR}/pai-mate-latest.tar.xz
# unzip
tar -Jxvf ${INSTALL_DIR}/pai-mate-latest.tar.xz -C ${INSTALL_DIR}
mv ${INSTALL_DIR}/pai-mate-latest.tar.xz ${INSTALL_DIR}/pai-mate-latest.tar.xz.old
cd ${INSTALL_DIR}
# config
echo "UPDATE_PATH: ${PAI_MATE_SERVER_PATH}" > config.yml
echo "DOMAIN_NAME: ${DOMAIN_NAME}" >> config.yml
echo "CERT_PATH: /etc/letsencrypt/live/${DOMAIN_NAME}/fullchain.pem" >> config.yml
echo "KEY_PATH: /etc/letsencrypt/live/${DOMAIN_NAME}/privkey.pem" >> config.yml
# prepare
source ${HOME}/pai/pai-mate-env # get node/npm binary path
#npm install --production --unsafe-perm=true --allow-root
# download from cos
wget -qO- ${PAI_MATE_SERVER_ROOT_PATH}/libs/node_modules.tar.xz | tar -Jxf -
npm run migrate:latest
# prepare workspace
mkdir -p /data/pai_mate_workspaces
# systemd service start
rm -rf /etc/systemd/system/tencentcloud-pai-mate.service
cat << 'EOF' > /etc/systemd/system/tencentcloud-pai-mate.service
[Unit]
Description=Tencent Cloud Pai Mate
After=network.target
[Service]
Type=simple
Restart=always
RestartSec=1
User=root
Environment=PATH=/usr/local/node/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
WorkingDirectory=/root/pai-mate
ExecStart=/root/pai-mate/bin/start.sh
[Install]
WantedBy=multi-user.target
EOF
rm -rf /etc/systemd/system/tencentcloud-pai-mate-update.service
cat << 'EOF' > /etc/systemd/system/tencentcloud-pai-mate-update.service
[Unit]
Description=Tencent Cloud Pai Mate Update
After=network.target
[Service]
Type=oneshot
User=root
Environment=PATH=/usr/local/node/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
WorkingDirectory=/root/pai-mate
ExecStart=/root/pai-mate/bin/update.sh
EOF
rm -rf /etc/systemd/system/tencentcloud-pai-mate-update.timer
cat << 'EOF' > /etc/systemd/system/tencentcloud-pai-mate-update.timer
[Unit]
Description=Tencent Cloud Pai Mate Update
[Timer]
OnCalendar=daily
RandomizedDelaySec=5minutes
Persistent=true
[Install]
WantedBy=timers.target
EOF
chmod +x ${INSTALL_DIR}/bin/*
systemctl daemon-reload
systemctl enable tencentcloud-pai-mate.service
systemctl start tencentcloud-pai-mate.service
systemctl start tencentcloud-pai-mate-update.timer 2>&1)
status=$?
updateProgress 90 "$msg" "$status" "paimate install"
echo "=====================pai install progress======================="
CONFIG_INSTALL_DIR=${HOME}/pai/etc
BINARY_INSTALL_DIR=${HOME}/pai/bin
mkdir -p ${CONFIG_INSTALL_DIR}
mkdir -p ${BINARY_INSTALL_DIR}
echo "server_path: ${SERVER_PATH}" > ${CONFIG_INSTALL_DIR}/pai.yml
echo "domain_name: ${DOMAIN_NAME}" >> ${CONFIG_INSTALL_DIR}/pai.yml
msg=$(# Note: `agent` binary will update and run this time. `baker` binay will be run next time.
# cannot overwrite binay, error: text busy
# mv -f "${BINARY_INSTALL_DIR}/pai_agent" "${BINARY_INSTALL_DIR}/pai_agent.old"
# mv -f "${BINARY_INSTALL_DIR}/pai_baker" "${BINARY_INSTALL_DIR}/pai_baker.old"
wget -q "${SERVER_PATH}/bin/pai_agent" > "${BINARY_INSTALL_DIR}/pai_agent"
# curl "${SERVER_PATH}/bin/pai_baker" -sSf > "${BINARY_INSTALL_DIR}/pai_baker"
chmod +x "${BINARY_INSTALL_DIR}/pai_agent"
# chmod +x "${BINARY_INSTALL_DIR}/pai_baker"
rm -rf /etc/systemd/system/tencentcloud-pai-agent.service
cat << 'EOF' > /etc/systemd/system/tencentcloud-pai-agent.service
[Unit]
Description=Tencent Cloud Pai Agent
After=network.target
[Service]
Type=simple
Restart=always
RestartSec=1
User=root
ExecStart=/root/pai/bin/pai_agent
[Install]
WantedBy=multi-user.target
EOF
rm -rf /etc/systemd/system/tencentcloud-pai-baker.timer
cat << 'EOF' > /etc/systemd/system/tencentcloud-pai-baker.timer
[Unit]
Description=Tencent Cloud Pai Baker
[Timer]
OnCalendar=daily
RandomizedDelaySec=5minutes
#OnCalendar=*-*-* *:*:00
Persistent=true
[Install]
WantedBy=timers.target
EOF
systemctl daemon-reload
systemctl enable tencentcloud-pai-agent.service
systemctl start tencentcloud-pai-agent.service 2>&1)
# systemctl restart tencentcloud-pai-baker.timer
status=$?
updateProgress 100 "$msg" "$status" "pai install"
}
installPai
安装完成后，打开域名:5523，用你的云主机帐号，最好root登录。其它就没有什么了，/root/pai,/root/pai-mate是程序目录 /data是数据，，测试了下，只有一个当前应用能起作用（鸡肋？）。，，并没有太深入去了解这个工程的细节。只是追求能做到可用即可。恩恩
我们的下一文，打造yet another cloudbase:在云主机上安装cloudide(jupyter)为pai面板所用
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