websocket数据流解析

ceilometer获取数据暂时先不做解答，本篇注重websocket解决浏览器与openstack组件之间的实时状态更新。

大致流程如下：

nginx配置的反向代理如下：

/etc/nginx/nginx.conf

include /etc/nginx/conf.d/*.conf;

/etc/nginx/conf.d/openstack.conf

upstream websocket_beijing {
    server 192.168.213.88:4500;
}

server {
    listen 81;
    #server_name horizon.plcloud.com;

    proxy_set_header        Host            $host;
    proxy_set_header        X-Real-IP       $remote_addr;
    proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;

    location / {
        include uwsgi_params;
        uwsgi_pass unix:/var/run/uwsgi/openstack.sock;
    }
    location /static/{
        alias /home/zzw/develop/horizon/static/;
    }
}


server {
    listen 4600;

    location / {
        proxy_pass http://websocket_beijing;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
    }
}

日志说明：

/var/log/nginx/access.log #nginx访问日志 

/var/log/nginx/error.log #nginx错误日志

uwsgi配置：

websocket.ini -> /home/zzw/develop/ceilometer/etc/ceilometer/websocket.ini

/etc/uwsgi/vassals/openstack.ini

# awcloud horizon uwsgi config file
[uwsgi]

# Django-related settings
# the virtualenv (full path)
# home = /var/plcloud/horizon/.venv

# the base directory (full path)
chdir = /home/zzw/develop/horizon/openstack_dashboard/wsgi
# Django's wsgi file
file = django.wsgi

# maximum number of worker processes
processes = 4

# the socket (use the full path to be safe
socket = /var/run/uwsgi/%n.sock
# with appropriate permissions - may be needed
chmod-socket = 777
daemonize = /var/log/uwsgi/%n.log

日志说明：

/var/log/uwsgi/openstack.log

/var/log/uwsgi/websocket.log

redis配置订阅模式：

/etc/redis.conf

daemonize yes
pidfile /var/run/redis/redis.pid
port 6379
tcp-backlog 511
bind 0.0.0.0
timeout 0
tcp-keepalive 0
loglevel notice
logfile /var/log/redis/redis.log
databases 16
save 900 1
save 300 10
save 60 10000
stop-writes-on-bgsave-error yes
rdbcompression yes
rdbchecksum yes
dbfilename dump.rdb
dir /var/lib/redis/
slave-serve-stale-data yes
slave-read-only yes
repl-disable-tcp-nodelay no
slave-priority 100
appendonly no
appendfilename "appendonly.aof"
appendfsync everysec
no-appendfsync-on-rewrite no
auto-aof-rewrite-percentage 100
auto-aof-rewrite-min-size 64mb
lua-time-limit 5000
slowlog-log-slower-than 10000
slowlog-max-len 128
notify-keyspace-events ""
hash-max-ziplist-entries 512
hash-max-ziplist-value 64
list-max-ziplist-entries 512
list-max-ziplist-value 64
set-max-intset-entries 512
zset-max-ziplist-entries 128
zset-max-ziplist-value 64
hll-sparse-max-bytes 3000
activerehashing yes
client-output-buffer-limit normal 0 0 0
client-output-buffer-limit slave 256mb 64mb 60
client-output-buffer-limit pubsub 32mb 8mb 60
hz 10
aof-rewrite-incremental-fsync yes

日志说明：

/var/log/redis/redis.log

ceilometer配置：

├── ceilometer.conf
├── ceilometertab.ini
├── matchmaker_ring.json
├── pipeline.yaml
├── policy.json
├── sources.json
└── templates
    ├── default.html
    └── default.sms

日志说明：

├── agent-notification.log
├── alarm-evaluator.log
├── alarm-notifier.log
├── api.log
├── auditor.log
├── central.log
├── checker.log
├── collector.log
├── compute.log
├── websocket.log
└── zmq-receiver.log

配置过程报错集锦：

1. uwsgi缺少对openssl支持，/var/log/uwsgi/websocket.log 报错如下：

[pid: 23996|app: 0|req: 8/8] 192.168.216.48 () {48 vars in 983 bytes} [Thu Apr 23 13:21:07 2015] GET /websocket?uid=33d5edff940f4812b5368e54499991e4&region=lab-test => generated 0 bytes in 1 msecs (HTTP/1.1 500) 0 headers in 0 bytes (1 switches on core 9999)
you need to build uWSGI with SSL support to use the websocket handshake api function !!!

解决方法：重新编译uwsgi，支持openssl

cd uwsgi-2.0.4/
make
stop uwsgi
python setup.py install
start uwsgi