在docker容器下安装airflow
本人的环境是基于centos7下来安装的
一、安装docker
下载docker安装包,下载地址:https://download.docker.com/linux/static/stable/x86_64/
下载到本地后解压
tar -zxf docker-18.09..tgz
将解压出来的docker文件内容移动到 /usr/bin/ 目录下
cp docker/* /usr/bin/
将docker注册为service
新建文件
vim /etc/systemd/system/docker.service
并添加以下内容
[Unit]
Description=Docker Application Container Engine
Documentation=https://docs.docker.com
After=network-online.target firewalld.service
Wants=network-online.target [Service]
Type=notify
# the default is not to use systemd for cgroups because the delegate issues still
# exists and systemd currently does not support the cgroup feature set required
# for containers run by docker
ExecStart=/usr/bin/dockerd
ExecReload=/bin/kill -s HUP $MAINPID
# Having non-zero Limit*s causes performance problems due to accounting overhead
# in the kernel. We recommend using cgroups to do container-local accounting.
LimitNOFILE=infinity
LimitNPROC=infinity
LimitCORE=infinity
# Uncomment TasksMax if your systemd version supports it.
# Only systemd and above support this version.
#TasksMax=infinity
TimeoutStartSec=
# set delegate yes so that systemd does not reset the cgroups of docker containers
Delegate=yes
# kill only the docker process, not all processes in the cgroup
KillMode=process
# restart the docker process if it exits prematurely
Restart=on-failure
StartLimitBurst=
StartLimitInterval=60s [Install]
WantedBy=multi-user.target
添加文件权限
chmod +x /etc/systemd/system/docker.service
systemctl daemon-reload
启动docker
systemctl start docker
验证
systemctl status docker #查看Docker状态
docker -v #查看Docker版本
二、安装airflow容器
先在宿主机安装mysql
上传mysql安装包
先卸载自带的mysql相关的包
rpm -qa|grep mariadb
mariadb-libs-5.5.-.el7_5.x86_64
$ rpm -e --nodeps mariadb-libs-5.5.-.el7_5.x86_64
error: can't create transaction lock on /var/lib/rpm/.rpm.lock (Permission denied)
$ sudo rpm -e --nodeps mariadb-libs-5.5.-.el7_5.x86_64
$ rpm -qa|grep mariadb
再依次安装
bigdata@bigdata mysql]$ sudo rpm -ivh mysql-community-common-5.7.-.el7.x86_64.rpm
warning: mysql-community-common-5.7.-.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
Preparing... ################################# [%]
Updating / installing...
:mysql-community-common-5.7.-.e################################# [%]
[bigdata@bigdata mysql]$ sudo rpm -ivh mysql-community-libs-5.7.-.el7.x86_64.rpm
warning: mysql-community-libs-5.7.-.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
Preparing... ################################# [%]
Updating / installing...
:mysql-community-libs-5.7.-.el7################################# [%]
[bigdata@bigdata mysql]$ sudo rpm -ivh mysql-community-libs-compat-5.7.-.el7.x86_64.rpm
warning: mysql-community-libs-compat-5.7.-.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
Preparing... ################################# [%]
Updating / installing...
:mysql-community-libs-compat-5.7.################################# [%]
[bigdata@bigdata mysql]$ sudo rpm -ivh mysql-community-embedded-compat-5.7.-.el7.x86_64.rpm
warning: mysql-community-embedded-compat-5.7.-.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
Preparing... ################################# [%]
Updating / installing...
:mysql-community-embedded-compat-################################# [%]
[bigdata@bigdata mysql]$ sudo rpm -ivh mysql-community-devel-5.7.-.el7.x86_64.rpm
warning: mysql-community-devel-5.7.-.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
Preparing... ################################# [%]
Updating / installing...
:mysql-community-devel-5.7.-.el################################# [%]
[bigdata@bigdata mysql]$ sudo rpm -ivh mysql-community-client-5.7.-.el7.x86_64.rpm
warning: mysql-community-client-5.7.-.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
Preparing... ################################# [%]
Updating / installing...
:mysql-community-client-5.7.-.e################################# [%]
[bigdata@bigdata mysql]$ sudo rpm -ivh mysql-community-server-5.7.-.el7.x86_64.rpm
warning: mysql-community-server-5.7.-.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
Preparing... ################################# [%]
Updating / installing...
:mysql-community-server-5.7.-.e################################# [%]
[bigdata@bigdata mysql]$
skip-grant-tables #添加这句话,这时候登入mysql就不需要密码
登录mysql,输入密码处直接回车就可以
配置msyql
mysql> flush privileges;
Query OK, rows affected (0.00 sec) mysql> set password for root@localhost = password('Admin123!');
Query OK, rows affected, warning (0.00 sec) mysql> create user 'airflow'@'localhost' identified by 'Airflow123!';
Query OK, rows affected (0.05 sec)
mysql> create database airflow;
Query OK, 1 row affected (0.00 sec) mysql> create user 'airflow'@'%' identified by 'AirFlow123!';
Query OK, 0 rows affected (0.02 sec) mysql> GRANT all privileges on airflow.* TO 'airflow'@'%' IDENTIFIED BY 'AirFlow123!';
Query OK, 0 rows affected, 1 warning (0.01 sec)
mysql> GRANT all privileges on airflow.* TO 'root'@'172.17.0.2' IDENTIFIED BY 'Admin123!';
Query OK, 0 rows affected, 1 warning (0.04 sec)
//172.17.0.2 是我的docker容器的地址
mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.01 sec)
修改/etc/my.cnf配置文件,在[mysqld]下添加编码配置
character_set_server=utf8
init_connect='SET NAMES utf8'
vim /etc/my.cnf
添加这一句
explicit_defaults_for_timestamp=1
编辑保存完 重启mysql服务: sudo systemctl restart mysqld.service
三、docker上安装airflow
git clone https://github.com/puckel/docker-airflow.git /root/airflow //下载源码到airflow文件夹 docker run --name airflow6 -v /usr/local/airflow/dags:/usr/local/airflow/dags -v /usr/local/airflow/airflowSql:/usr/local/airflow/airflowSql -v /home/airflow/airflow.cfg:/usr/local/airflow/airflow.cfg -d -p 8086:8080 --privileged puckel/docker-airflow //运行容器 /* 我这里把本地的目录映射到容器里面去 通过 -v 参数进行映射**/
进入容器
docker exec -it -u root airflow6 bash
修改配置文件
自动扫描.py文件
修改scheduler线程数控制并发量(这个通常在性能调优方面)
修改检查新的dag的间隔
airflow initdb // 初始化数据库
出现错误:
airflow.exceptions.AirflowException: Could not create Fernet object: Incorrect padding
解决办法:
python -c "from cryptography.fernet import Fernet;
print(Fernet.generate_key().decode())"
export AIRFLOW__CORE__FERNET_KEY=oNu9XwewQNyx9mAJT2vZvtm3qzPRZIWRqwk9hSVch4A=
airflow initdb // 重新运行初始化数据库
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