我是Flask的新手,想要确保redis服务器正在运行,如果不是,则启动它。这就是我所拥有的:
@app.before_first_request
def initialize():
cmd = 'src/redis-cli ping'
p = subprocess.Popen(cmd,stdout=subprocess.PIPE)
out, err = p.communicate()
#if out.startswith('Could not connect to Redis'): #start redis here
if err is not None: raise Exception(err)
但是,我收到错误“OSError:[Errno 2]没有这样的文件或目录”
有没有更简单的方法来检查redis服务器是否正在运行?
答案 0 :(得分:9)
import redis
from redis import ConnectionError
import logging
logging.basicConfig()
logger = logging.getLogger('redis')
rs = redis.Redis("localhost")
try:
rs.ping()
except ConnectionError:
logger.error("Redis isn't running. try `/etc/init.d/redis-server restart`")
exit(0)
示例输出:
ERROR:redis:Redis isn't running. try `/etc/init.d/redis-server restart`
答案 1 :(得分:0)
我建议您使用supervision
之类的supervisord
monit
或 check host redis with address <your_redis_host>
if failed icmp type echo count 3 with timeout 3 seconds then alert
if failed port 6379 with timeout 15 seconds then alert
来检查进程,主机,文件等是否正在执行此操作; ,如果没有,然后重新启动它。
例如,这里是检查redis的配置:
{{1}}