首先需要安裝python，pip，建議安裝python3。我這裏因爲之前使用datax，安裝的時python2，圖省事就沒有升級到python3。下面介紹安裝過程。
安裝airflow
之後直接pip install apache-airflow進行安裝，結果報一堆下面的錯
Requirement already satisfied: scandir; python_version < "3.5" in /home/asn/.local/lib/python2.7/site-packages (from pathlib2; python_version < "3"->importlib-metadata<2,>=0.23; python_version == "2.7"->argcomplete~=1.10->apache-airflow) (1.10.0)
Building wheels for collected packages: psutil, setproctitle
Building wheel for psutil (setup.py) ... error
ERROR: Command errored out with exit status 1:
command: /usr/bin/python -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-hfjtmc/psutil/setup.py'"'"'; __file__='"'"'/tmp/pip-install-hfjtmc/psutil/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' bdist_wheel -d /tmp/pip-wheel-AbtHBd
cwd: /tmp/pip-install-hfjtmc/psutil/
Complete output (44 lines):
running bdist_wheel
running build
running build_py
creating build
creating build/lib.linux-x86_64-2.7
creating build/lib.linux-x86_64-2.7/psutil
copying psutil/_pswindows.py -> build/lib.linux-x86_64-2.7/psutil
copying psutil/_psbsd.py -> build/lib.linux-x86_64-2.7/psutil
copying psutil/_compat.py -> build/lib.linux-x86_64-2.7/psutil
copying psutil/_common.py -> build/lib.linux-x86_64-2.7/psutil
copying psutil/_psposix.py -> build/lib.linux-x86_64-2.7/psutil
copying psutil/__init__.py -> build/lib.linux-x86_64-2.7/psutil
copying psutil/_psaix.py -> build/lib.linux-x86_64-2.7/psutil
copying psutil/_pslinux.py -> build/lib.linux-x86_64-2.7/psutil
copying psutil/_pssunos.py -> build/lib.linux-x86_64-2.7/psutil
copying psutil/_psosx.py -> build/lib.linux-x86_64-2.7/psutil
creating build/lib.linux-x86_64-2.7/psutil/tests
copying psutil/tests/test_aix.py -> build/lib.linux-x86_64-2.7/psutil/tests
copying psutil/tests/test_system.py -> build/lib.linux-x86_64-2.7/psutil/tests
copying psutil/tests/test_bsd.py -> build/lib.linux-x86_64-2.7/psutil/tests
copying psutil/tests/test_connections.py -> build/lib.linux-x86_64-2.7/psutil/tests
copying psutil/tests/test_unicode.py -> build/lib.linux-x86_64-2.7/psutil/tests
copying psutil/tests/test_posix.py -> build/lib.linux-x86_64-2.7/psutil/tests
copying psutil/tests/test_windows.py -> build/lib.linux-x86_64-2.7/psutil/tests
copying psutil/tests/test_misc.py -> build/lib.linux-x86_64-2.7/psutil/tests
copying psutil/tests/test_sunos.py -> build/lib.linux-x86_64-2.7/psutil/tests
copying psutil/tests/__init__.py -> build/lib.linux-x86_64-2.7/psutil/tests
copying psutil/tests/test_memory_leaks.py -> build/lib.linux-x86_64-2.7/psutil/tests
copying psutil/tests/test_osx.py -> build/lib.linux-x86_64-2.7/psutil/tests
copying psutil/tests/test_process.py -> build/lib.linux-x86_64-2.7/psutil/tests
copying psutil/tests/test_linux.py -> build/lib.linux-x86_64-2.7/psutil/tests
copying psutil/tests/__main__.py -> build/lib.linux-x86_64-2.7/psutil/tests
copying psutil/tests/test_contracts.py -> build/lib.linux-x86_64-2.7/psutil/tests
copying psutil/tests/runner.py -> build/lib.linux-x86_64-2.7/psutil/tests
running build_ext
building 'psutil._psutil_linux' extension
creating build/temp.linux-x86_64-2.7
creating build/temp.linux-x86_64-2.7/psutil
gcc -pthread -fno-strict-aliasing -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic -D_GNU_SOURCE -fPIC -fwrapv -DNDEBUG -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic -D_GNU_SOURCE -fPIC -fwrapv -fPIC -DPSUTIL_POSIX=1 -DPSUTIL_SIZEOF_PID_T=4 -DPSUTIL_VERSION=570 -DPSUTIL_LINUX=1 -I/usr/include/python2.7 -c psutil/_psutil_common.c -o build/temp.linux-x86_64-2.7/psutil/_psutil_common.o
psutil/_psutil_common.c:9:20: fatal error: Python.h: No such file or directory
#include <Python.h>
^
compilation terminated.
error: command 'gcc' failed with exit status 1
----------------------------------------
ERROR: Failed building wheel for psutil
Running setup.py clean for psutil
Building wheel for setproctitle (setup.py) ... error
解決方案也很簡單，運行以下命令再重新安裝即可：
sudo yum -y install python2-devel
python3類似
安裝完成之後既可以查看airflow的版本號：
$ airflow version
DEPRECATION: Python 2.7 will reach the end of its life on January 1st, 2020. Airflow 1.10 will be the last release series to support Python 2
1.10.10
airflow默認是安裝再~/airflow下的，可以通過設置export AIRFLOW_HOME=xxx修改安裝目錄。我這裏沒有改：
$ ll ~/airflow/
total 40
-rw-r--r-- 1 asn admin 36403 Jun 6 18:12 airflow.cfg
drwxr-xr-x 3 asn admin 23 Jun 6 18:12 logs
-rw-r--r-- 1 asn admin 2524 Jun 6 18:12 unittests.cfg
接下來進入初始化步驟。
初始化
$ airflow initdb
DEPRECATION: Python 2.7 will reach the end of its life on January 1st, 2020. Airflow 1.10 will be the last release series to support Python 2
DB: sqlite:////home/asn/airflow/airflow.db
[2020-06-06 18:20:47,948] {db.py:378} INFO - Creating tables
INFO [alembic.runtime.migration] Context impl SQLiteImpl.
INFO [alembic.runtime.migration] Will assume non-transactional DDL.
INFO [alembic.runtime.migration] Running upgrade -> e3a246e0dc1, current schema
INFO [alembic.runtime.migration] Running upgrade e3a246e0dc1 -> 1507a7289a2f, create is_encrypted
/home/asn/.local/lib/python2.7/site-packages/alembic/ddl/sqlite.py:41: UserWarning: Skipping unsupported ALTER for creation of implicit constraintPlease refer to the batch mode feature which allows for SQLite migrations using a copy-and-move strategy.
"Skipping unsupported ALTER for "
INFO [alembic.runtime.migration] Running upgrade 1507a7289a2f -> 13eb55f81627, maintain history for compatibility with earlier migrations
INFO [alembic.runtime.migration] Running upgrade 13eb55f81627 -> 338e90f54d61, More logging into task_instance
INFO [alembic.runtime.migration] Running upgrade 338e90f54d61 -> 52d714495f0, job_id indices
INFO [alembic.runtime.migration] Running upgrade 52d714495f0 -> 502898887f84, Adding extra to Log
INFO [alembic.runtime.migration] Running upgrade 502898887f84 -> 1b38cef5b76e, add dagrun
INFO [alembic.runtime.migration] Running upgrade 1b38cef5b76e -> 2e541a1dcfed, task_duration
INFO [alembic.runtime.migration] Running upgrade 2e541a1dcfed -> 40e67319e3a9, dagrun_config
INFO [alembic.runtime.migration] Running upgrade 40e67319e3a9 -> 561833c1c74b, add password column to user
INFO [alembic.runtime.migration] Running upgrade 561833c1c74b -> 4446e08588, dagrun start end
INFO [alembic.runtime.migration] Running upgrade 4446e08588 -> bbc73705a13e, Add notification_sent column to sla_miss
INFO [alembic.runtime.migration] Running upgrade bbc73705a13e -> bba5a7cfc896, Add a column to track the encryption state of the 'Extra' field in connection
INFO [alembic.runtime.migration] Running upgrade bba5a7cfc896 -> 1968acfc09e3, add is_encrypted column to variable table
INFO [alembic.runtime.migration] Running upgrade 1968acfc09e3 -> 2e82aab8ef20, rename user table
INFO [alembic.runtime.migration] Running upgrade 2e82aab8ef20 -> 211e584da130, add TI state index
INFO [alembic.runtime.migration] Running upgrade 211e584da130 -> 64de9cddf6c9, add task fails journal table
INFO [alembic.runtime.migration] Running upgrade 64de9cddf6c9 -> f2ca10b85618, add dag_stats table
INFO [alembic.runtime.migration] Running upgrade f2ca10b85618 -> 4addfa1236f1, Add fractional seconds to mysql tables
INFO [alembic.runtime.migration] Running upgrade 4addfa1236f1 -> 8504051e801b, xcom dag task indices
INFO [alembic.runtime.migration] Running upgrade 8504051e801b -> 5e7d17757c7a, add pid field to TaskInstance
INFO [alembic.runtime.migration] Running upgrade 5e7d17757c7a -> 127d2bf2dfa7, Add dag_id/state index on dag_run table
INFO [alembic.runtime.migration] Running upgrade 127d2bf2dfa7 -> cc1e65623dc7, add max tries column to task instance
INFO [alembic.runtime.migration] Running upgrade cc1e65623dc7 -> bdaa763e6c56, Make xcom value column a large binary
INFO [alembic.runtime.migration] Running upgrade bdaa763e6c56 -> 947454bf1dff, add ti job_id index
INFO [alembic.runtime.migration] Running upgrade 947454bf1dff -> d2ae31099d61, Increase text size for MySQL (not relevant for other DBs' text types)
INFO [alembic.runtime.migration] Running upgrade d2ae31099d61 -> 0e2a74e0fc9f, Add time zone awareness
INFO [alembic.runtime.migration] Running upgrade d2ae31099d61 -> 33ae817a1ff4, kubernetes_resource_checkpointing
INFO [alembic.runtime.migration] Running upgrade 33ae817a1ff4 -> 27c6a30d7c24, kubernetes_resource_checkpointing
INFO [alembic.runtime.migration] Running upgrade 27c6a30d7c24 -> 86770d1215c0, add kubernetes scheduler uniqueness
INFO [alembic.runtime.migration] Running upgrade 86770d1215c0, 0e2a74e0fc9f -> 05f30312d566, merge heads
INFO [alembic.runtime.migration] Running upgrade 05f30312d566 -> f23433877c24, fix mysql not null constraint
INFO [alembic.runtime.migration] Running upgrade f23433877c24 -> 856955da8476, fix sqlite foreign key
INFO [alembic.runtime.migration] Running upgrade 856955da8476 -> 9635ae0956e7, index-faskfail
INFO [alembic.runtime.migration] Running upgrade 9635ae0956e7 -> dd25f486b8ea, add idx_log_dag
INFO [alembic.runtime.migration] Running upgrade dd25f486b8ea -> bf00311e1990, add index to taskinstance
INFO [alembic.runtime.migration] Running upgrade 9635ae0956e7 -> 0a2a5b66e19d, add task_reschedule table
INFO [alembic.runtime.migration] Running upgrade 0a2a5b66e19d, bf00311e1990 -> 03bc53e68815, merge_heads_2
INFO [alembic.runtime.migration] Running upgrade 03bc53e68815 -> 41f5f12752f8, add superuser field
INFO [alembic.runtime.migration] Running upgrade 41f5f12752f8 -> c8ffec048a3b, add fields to dag
INFO [alembic.runtime.migration] Running upgrade c8ffec048a3b -> dd4ecb8fbee3, Add schedule interval to dag
INFO [alembic.runtime.migration] Running upgrade dd4ecb8fbee3 -> 939bb1e647c8, task reschedule fk on cascade delete
INFO [alembic.runtime.migration] Running upgrade 939bb1e647c8 -> 6e96a59344a4, Make TaskInstance.pool not nullable
INFO [alembic.runtime.migration] Running upgrade 6e96a59344a4 -> d38e04c12aa2, add serialized_dag table
Revision ID: d38e04c12aa2
Revises: 6e96a59344a4
Create Date: 2019-08-01 14:39:35.616417
INFO [alembic.runtime.migration] Running upgrade d38e04c12aa2 -> b3b105409875, add root_dag_id to DAG
Revision ID: b3b105409875
Revises: d38e04c12aa2
Create Date: 2019-09-28 23:20:01.744775
INFO [alembic.runtime.migration] Running upgrade 6e96a59344a4 -> 74effc47d867, change datetime to datetime2(6) on MSSQL tables
INFO [alembic.runtime.migration] Running upgrade 939bb1e647c8 -> 004c1210f153, increase queue name size limit
INFO [alembic.runtime.migration] Running upgrade c8ffec048a3b -> a56c9515abdc, Remove dag_stat table
INFO [alembic.runtime.migration] Running upgrade a56c9515abdc, 004c1210f153, 74effc47d867, b3b105409875 -> 08364691d074, Merge the four heads back together
INFO [alembic.runtime.migration] Running upgrade 08364691d074 -> fe461863935f, increase_length_for_connection_password
INFO [alembic.runtime.migration] Running upgrade fe461863935f -> 7939bcff74ba, Add DagTags table
INFO [alembic.runtime.migration] Running upgrade 7939bcff74ba -> a4c2fd67d16b, add pool_slots field to task_instance
INFO [alembic.runtime.migration] Running upgrade a4c2fd67d16b -> 852ae6c715af, Add RenderedTaskInstanceFields table
INFO [alembic.runtime.migration] Running upgrade 852ae6c715af -> 952da73b5eff, add dag_code table
WARNI [airflow.utils.log.logging_mixin.LoggingMixin] cryptography not found - values will not be stored encrypted.
Done.
默認使用的數據庫是sqlite，與airflow.executors.sequential_executor.SequentialExecutor綁定在一起，只支持任務實例的順序執行，不支持並行化，因此後續可以通過配置修改改mysql數據庫。
啓動web服務
$ airflow webserver -p 8080
DEPRECATION: Python 2.7 will reach the end of its life on January 1st, 2020. Airflow 1.10 will be the last release series to support Python 2
____________ _____________
____ |__( )_________ __/__ /________ __
____ /| |_ /__ ___/_ /_ __ /_ __ \_ | /| / /
___ ___ | / _ / _ __/ _ / / /_/ /_ |/ |/ /
_/_/ |_/_/ /_/ /_/ /_/ \____/____/|__/
[2020-06-06 18:26:19,484] {__init__.py:51} INFO - Using executor SequentialExecutor
[2020-06-06 18:26:19,485] {dagbag.py:396} INFO - Filling up the DagBag from /home/asn/airflow/dags
Running the Gunicorn Server with:
Workers: 4 sync
Host: 0.0.0.0:8080
Timeout: 120
Logfiles: - -
=================================================================
[2020-06-06 18:26:20 +0000] [32513] [INFO] Starting gunicorn 19.10.0
[2020-06-06 18:26:20 +0000] [32513] [INFO] Listening at: http://0.0.0.0:8080 (32513)
[2020-06-06 18:26:20 +0000] [32513] [INFO] Using worker: sync
[2020-06-06 18:26:20 +0000] [32534] [INFO] Booting worker with pid: 32534
[2020-06-06 18:26:20 +0000] [32535] [INFO] Booting worker with pid: 32535
[2020-06-06 18:26:20 +0000] [32536] [INFO] Booting worker with pid: 32536
[2020-06-06 18:26:20 +0000] [32551] [INFO] Booting worker with pid: 32551
[2020-06-06 18:26:21,169] {__init__.py:51} INFO - Using executor SequentialExecutor
[2020-06-06 18:26:21,169] {dagbag.py:396} INFO - Filling up the DagBag from /home/asn/airflow/dags
[2020-06-06 18:26:21,185] {__init__.py:51} INFO - Using executor SequentialExecutor
[2020-06-06 18:26:21,185] {dagbag.py:396} INFO - Filling up the DagBag from /home/asn/airflow/dags
[2020-06-06 18:26:21,260] {__init__.py:51} INFO - Using executor SequentialExecutor
[2020-06-06 18:26:21,260] {dagbag.py:396} INFO - Filling up the DagBag from /home/asn/airflow/dags
[2020-06-06 18:26:21,335] {__init__.py:51} INFO - Using executor SequentialExecutor
[2020-06-06 18:26:21,336] {dagbag.py:396} INFO - Filling up the DagBag from /home/asn/airflow/dags
查看頁面xxxx:8080
啓動schedule
$ airflow scheduler
DEPRECATION: Python 2.7 will reach the end of its life on January 1st, 2020. Airflow 1.10 will be the last release series to support Python 2
____________ _____________
____ |__( )_________ __/__ /________ __
____ /| |_ /__ ___/_ /_ __ /_ __ \_ | /| / /
___ ___ | / _ / _ __/ _ / / /_/ /_ |/ |/ /
_/_/ |_/_/ /_/ /_/ /_/ \____/____/|__/
[2020-06-06 18:30:37,652] {__init__.py:51} INFO - Using executor SequentialExecutor
[2020-06-06 18:30:37,661] {scheduler_job.py:1346} INFO - Starting the scheduler
[2020-06-06 18:30:37,661] {scheduler_job.py:1354} INFO - Running execute loop for -1 seconds
[2020-06-06 18:30:37,662] {scheduler_job.py:1355} INFO - Processing each file at most -1 times
[2020-06-06 18:30:37,662] {scheduler_job.py:1358} INFO - Searching for files in /home/asn/airflow/dags
[2020-06-06 18:30:37,674] {scheduler_job.py:1360} INFO - There are 24 files in /home/asn/airflow/dags
[2020-06-06 18:30:37,674] {scheduler_job.py:1411} INFO - Resetting orphaned tasks for active dag runs
[2020-06-06 18:30:37,688] {dag_processing.py:556} INFO - Launched DagFileProcessorManager with pid: 3851
[2020-06-06 18:30:37,704] {settings.py:54} INFO - Configured default timezone <Timezone [UTC]>
[2020-06-06 18:30:37,720] {dag_processing.py:758} WARNING - Because we cannot use more than 1 thread (max_threads = 2) when using sqlite. So we set parallelism to 1.
安裝結束！
參考：https://blog.csdn.net/liyuxing6639801/article/details/82153967