Interesting things
接着上一篇来写。
What did you do today
With RHEL 7 / CentOS 7, firewalld was introduced to manage iptables. IMHO, firewalld is more suited for workstations than for server environments.
It is possible to go back to a more classic iptables setup. First, stop and mask the firewalld service
- 上一篇我们发现在/etc/sysconfig/下没有看到iptables，并且我们使用iptbales -P INPUT ACCESPT
service iptables save命令写入防火墙策略的时候，抛出了"The service command supports only basic LSB actions (start, stop, restart, try-restart, reload, force-reload, status). For other actions, please try to use systemctl."异常，而且用service iptables status查看防火墙的状态也提示"Unit iptables.service could not found"
- 查阅资料发现，CentOS 7引入(默认firewalld)了firewalld来管理iptables，如果我们想回到iptables设置，首先我们需要停止firewalld，命令: systemctl stop firewalld, 然后屏蔽firewalld, systemctl mask firewalld，它是创建一个/etc/systemd/system/firewalld.service到 /dev/null的符号链接去屏蔽firewalld的服务。
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安装iptables-services, yum install iptables-services
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启用iptables, systemctl enable iptables.
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启动iptables, systemctl start iptables,然后我们进入/etc/sysconfig/，发现iptables文件出现了
image.png 我们进入/etc/sysconfig/iptables，添加访问22122端口的策略，直接复制上面就行了，改个端口号就ok了。
-A INPUT -p tcp -m state --state NEW -m tcp --dport 22122 -j ACCEPT
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让防火墙策略生效。service iptables save.
image.png 重启防火墙，二种方式都可以。systemctl restart iptables
service iptables restart
- 通过/etc/init.d/fdfs_trackerd start来启动，然后用ps -ef|grep fdfs来查看tracker是否正常启动。
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还记得我们之前配置tracker.conf的时候把里面的base_path改成了/fastdfs/tracker，我们进入/fastdfs/tracker里面发现多了data，logs两个文件夹
image.png 我们打开logs文件夹会发现trackerd.log
[2017-12-27 10:38:41] INFO - FastDFS v5.05, base_path=/fastdfs/tracker, run_by_group=, run_by_user=, connect_timeout=30s, network_timeout=60s, port=22122, bind_addr=, max_connections=256, accept_threads=1, work_threads=4, store_lookup=0, store_group=, store_server=0, store_path=0, reserved_storage_space=10.00%, download_server=0, allow_ip_count=-1, sync_log_buff_interval=10s, check_active_interval=120s, thread_stack_size=64 KB, storage_ip_changed_auto_adjust=1, storage_sync_file_max_delay=86400s, storage_sync_file_max_time=300s, use_trunk_file=0, slot_min_size=256, slot_max_size=16 MB, trunk_file_size=64 MB, trunk_create_file_advance=0, trunk_create_file_time_base=02:00, trunk_create_file_interval=86400, trunk_create_file_space_threshold=20 GB, trunk_init_check_occupying=0, trunk_init_reload_from_binlog=0, trunk_compress_binlog_min_interval=0, use_storage_id=0, id_type_in_filename=ip, storage_id_count=0, rotate_error_log=0, error_log_rotate_time=00:00, rotate_error_log_size=0, log_file_keep_days=0, store_slave_file_use_link=0, use_connection_pool=0, g_connection_pool_max_idle_time=3600s
打开data文件夹，会发现fdfs_trackerd.pid(里面是3185，进程标识符)和storage_changelog.dat(里面为空)。
接下来我们需要配置storage，将group1(192.168.12.33, 192.168.12.44)和group2(192.18.12.55, 192.168.12.66)作为我们的存储节点。
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拷贝storage.conf.sample,并且重命名为storage.conf。
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给192.168.12.44、192.168.12.55、192.168.12.66都拷贝一份storage.conf
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更改group1的storage.conf，把base_path改成/fastdfs/storage
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我们可以storage server的端口号是23000，group_name修改成自己所在的组，192.168.12.33和192.168.12.44对应的group_name=group1, 192.168.12.55和192.168.12.66对应的group_name=group2。
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默认storage存储路径的个数是1，
我们把storage_path0修改成/fastdfs/storage
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配置tracker_server=192.168.12.11:22122、tracker_server=192.168.12.22:2212
所配置的地址也就是tracker1和tracker2地址。
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我们可以到storage的web端口是8888。
image.png 然后把配置完的stroage.conf拷贝给192.168.12.44、192.168.12.55、192.168.12.66。192.168.12.44不用做任何修改，192.168.12.55和192.168.12.66只用把group_name修改为group2即可。
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创建/fastdfs/storage。mkdir -p /fastdfs/storage
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同样的往iptables里面添加端口23000。
-A INPUT -p tcp -m state --state NEW -m tcp --dport 23000 -j ACCEPT
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我们在192.168.12.33启动storage。
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我们进入/fastdfs/storage,会发现也生成了logs和data文件夹。
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我们先把所有的tracker1和tracker2， group1和group2都关闭。然后我先启动tracker2(192.168.12.22)，tracker2会去尝试连接tracker1，tracker1肯定没有开启，所以会连接失败，tracker2会成为tracker leader。
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开启tracker1，tracker2此时已经是leader了。所以会打印出"the tracker leader 192.168.12.22:22122"
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开启192.168.12.33，发现成功连接tracker1，tracker2。tracker2是tracker leader。而且成功连接同一个group下的192.168.12.44.
image.png
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开启192.168.12.44，成功连接tracker1，tracker2，192.168.12.33。
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开启192.168.12.55 和 192.168.12.66，彼此相互连接成功，连接成功tracker1，tracker2.
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tracker和storage集群搭建完毕了，我们可以测试一下tracker的高可用性。tracker leader一开始是tracker2(192.168.12.22)，如果我们把tracker2关闭，tracker1（192.168.12.11）就会成为我们的tracker leader。
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我们随便挑一个group1和group2所属的storage，也发现tracker leader切换到了tracker1，简直美滋滋。
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接着我再启动tracker2，发现依然悍动不了tracker2身为leader的宝座。
image.png 所有的tracker和storage节点都启动成功后，我们可以在任意的一个storage查看storage集群信息。我这里就选192.168.12.33把，命令: /usr/bin/fdfs_monitor
/etc/fdfs/storage.conf
[root@localhost logs]# /usr/bin/fdfs_monitor /etc/fdfs/storage.conf
[2017-12-27 16:26:30] DEBUG - base_path=/fastdfs/storage, connect_timeout=30, network_timeout=60, tracker_server_count=2, anti_steal_token=0, anti_steal_secret_key length=0, use_connection_pool=0, g_connection_pool_max_idle_time=3600s, use_storage_id=0, storage server id count: 0
server_count=2, server_index=0
tracker server is 192.168.12.11:22122
group count: 2
Group 1:
group name = group1
disk total space = 18414 MB
disk free space = 17044 MB
trunk free space = 0 MB
storage server count = 2
active server count = 2
storage server port = 23000
storage HTTP port = 8888
store path count = 1
subdir count per path = 256
current write server index = 0
current trunk file id = 0
Storage 1:
id = 192.168.12.33
ip_addr = 192.168.12.33 (localhost.localdomain) ACTIVE
http domain =
version = 5.05
join time = 2017-12-27 11:52:50
up time = 2017-12-27 16:01:59
total storage = 18414 MB
free storage = 17151 MB
upload priority = 10
store_path_count = 1
subdir_count_per_path = 256
storage_port = 23000
storage_http_port = 8888
current_write_path = 0
source storage id =
if_trunk_server = 0
connection.alloc_count = 256
connection.current_count = 1
connection.max_count = 1
total_upload_count = 0
success_upload_count = 0
total_append_count = 0
success_append_count = 0
total_modify_count = 0
success_modify_count = 0
total_truncate_count = 0
success_truncate_count = 0
total_set_meta_count = 0
success_set_meta_count = 0
total_delete_count = 0
success_delete_count = 0
total_download_count = 0
success_download_count = 0
total_get_meta_count = 0
success_get_meta_count = 0
total_create_link_count = 0
success_create_link_count = 0
total_delete_link_count = 0
success_delete_link_count = 0
total_upload_bytes = 0
success_upload_bytes = 0
total_append_bytes = 0
success_append_bytes = 0
total_modify_bytes = 0
success_modify_bytes = 0
stotal_download_bytes = 0
success_download_bytes = 0
total_sync_in_bytes = 0
success_sync_in_bytes = 0
total_sync_out_bytes = 0
success_sync_out_bytes = 0
total_file_open_count = 0
success_file_open_count = 0
total_file_read_count = 0
success_file_read_count = 0
total_file_write_count = 0
success_file_write_count = 0
last_heart_beat_time = 2017-12-27 16:25:58
last_source_update = 1970-01-01 08:00:00
last_sync_update = 1970-01-01 08:00:00
last_synced_timestamp = 1970-01-01 08:00:00
Storage 2:
id = 192.168.12.44
ip_addr = 192.168.12.44 ACTIVE
http domain =
version = 5.05
join time = 2017-12-27 13:30:50
up time = 2017-12-27 15:53:28
total storage = 18414 MB
free storage = 17044 MB
upload priority = 10
store_path_count = 1
subdir_count_per_path = 256
storage_port = 23000
storage_http_port = 8888
current_write_path = 0
source storage id =
if_trunk_server = 0
connection.alloc_count = 256
connection.current_count = 1
connection.max_count = 1
total_upload_count = 0
success_upload_count = 0
total_append_count = 0
success_append_count = 0
total_modify_count = 0
success_modify_count = 0
total_truncate_count = 0
success_truncate_count = 0
total_set_meta_count = 0
success_set_meta_count = 0
total_delete_count = 0
success_delete_count = 0
total_download_count = 0
success_download_count = 0
total_get_meta_count = 0
success_get_meta_count = 0
total_create_link_count = 0
success_create_link_count = 0
total_delete_link_count = 0
success_delete_link_count = 0
total_upload_bytes = 0
success_upload_bytes = 0
total_append_bytes = 0
success_append_bytes = 0
total_modify_bytes = 0
success_modify_bytes = 0
stotal_download_bytes = 0
success_download_bytes = 0
total_sync_in_bytes = 0
success_sync_in_bytes = 0
total_sync_out_bytes = 0
success_sync_out_bytes = 0
total_file_open_count = 0
success_file_open_count = 0
total_file_read_count = 0
success_file_read_count = 0
total_file_write_count = 0
success_file_write_count = 0
last_heart_beat_time = 2017-12-27 16:26:27
last_source_update = 1970-01-01 08:00:00
last_sync_update = 1970-01-01 08:00:00
last_synced_timestamp = 1970-01-01 08:00:00
Group 2:
group name = group2
disk total space = 17394 MB
disk free space = 16128 MB
trunk free space = 0 MB
storage server count = 2
active server count = 2
storage server port = 23000
storage HTTP port = 8888
store path count = 1
subdir count per path = 256
current write server index = 0
current trunk file id = 0
Storage 1:
id = 192.168.12.55
ip_addr = 192.168.12.55 ACTIVE
http domain =
version = 5.05
join time = 2017-12-27 13:35:06
up time = 2017-12-27 15:56:07
total storage = 17394 MB
free storage = 16128 MB
upload priority = 10
store_path_count = 1
subdir_count_per_path = 256
storage_port = 23000
storage_http_port = 8888
current_write_path = 0
source storage id =
if_trunk_server = 0
connection.alloc_count = 256
connection.current_count = 1
connection.max_count = 1
total_upload_count = 0
success_upload_count = 0
total_append_count = 0
success_append_count = 0
total_modify_count = 0
success_modify_count = 0
total_truncate_count = 0
success_truncate_count = 0
total_set_meta_count = 0
success_set_meta_count = 0
total_delete_count = 0
success_delete_count = 0
total_download_count = 0
success_download_count = 0
total_get_meta_count = 0
success_get_meta_count = 0
total_create_link_count = 0
success_create_link_count = 0
total_delete_link_count = 0
success_delete_link_count = 0
total_upload_bytes = 0
success_upload_bytes = 0
total_append_bytes = 0
success_append_bytes = 0
total_modify_bytes = 0
success_modify_bytes = 0
stotal_download_bytes = 0
success_download_bytes = 0
total_sync_in_bytes = 0
success_sync_in_bytes = 0
total_sync_out_bytes = 0
success_sync_out_bytes = 0
total_file_open_count = 0
success_file_open_count = 0
total_file_read_count = 0
success_file_read_count = 0
total_file_write_count = 0
success_file_write_count = 0
last_heart_beat_time = 2017-12-27 16:26:07
last_source_update = 1970-01-01 08:00:00
last_sync_update = 1970-01-01 08:00:00
last_synced_timestamp = 1970-01-01 08:00:00
Storage 2:
id = 192.168.12.66
ip_addr = 192.168.12.66 ACTIVE
http domain =
version = 5.05
join time = 2017-12-27 13:36:48
up time = 2017-12-27 15:56:54
total storage = 18414 MB
free storage = 17044 MB
upload priority = 10
store_path_count = 1
subdir_count_per_path = 256
storage_port = 23000
storage_http_port = 8888
current_write_path = 0
source storage id = 192.168.12.55
if_trunk_server = 0
connection.alloc_count = 256
connection.current_count = 1
connection.max_count = 1
total_upload_count = 0
success_upload_count = 0
total_append_count = 0
success_append_count = 0
total_modify_count = 0
success_modify_count = 0
total_truncate_count = 0
success_truncate_count = 0
total_set_meta_count = 0
success_set_meta_count = 0
total_delete_count = 0
success_delete_count = 0
total_download_count = 0
success_download_count = 0
total_get_meta_count = 0
success_get_meta_count = 0
total_create_link_count = 0
success_create_link_count = 0
total_delete_link_count = 0
success_delete_link_count = 0
total_upload_bytes = 0
success_upload_bytes = 0
total_append_bytes = 0
success_append_bytes = 0
total_modify_bytes = 0
success_modify_bytes = 0
stotal_download_bytes = 0
success_download_bytes = 0
total_sync_in_bytes = 0
success_sync_in_bytes = 0
total_sync_out_bytes = 0
success_sync_out_bytes = 0
total_file_open_count = 0
success_file_open_count = 0
total_file_read_count = 0
success_file_read_count = 0
total_file_write_count = 0
success_file_write_count = 0
last_heart_beat_time = 2017-12-27 16:26:24
last_source_update = 1970-01-01 08:00:00
last_sync_update = 1970-01-01 08:00:00
last_synced_timestamp = 1970-01-01 08:00:00
[root@localhost logs]#
输出的结果和我们预想的storage集群是一样一样的，tracker_server 有2个， group有2个。group1的ip有192.168.12.33和192.168.12.44，group2的ip有192.168.12.55和192.168.12.66.
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使用cd /usr/bin && ls |grep fdfs来查看fdfs所有的命令。
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Warning
请看下一篇。