RADIUS 服务器冗余 MySQL
RADIUS Server redundant MySQL
我目前正在为 RADIUS 应用程序 运行 FreeRADIUS V.3.xx 结合 MySQL 构建测试设置。整个设置是多余的。所有服务器都是运行虚拟机运行 openSUSE 13.1
我的问题是我似乎无法找到冗余 MySQL 服务器的正确配置。有没有人有这方面的经验？
到目前为止我所做的，基本上是遵循官方freeradius wiki的相关部分...尝试使用rlm_sql_mysql套接字的组、细节、直接操作来提出变体......任何我能想到的......但没有成功。目前它回到了 "wiki status"
即：
我从 .../mods-enabled/ 中删除了 link 到 sql ，因为这导致冗余服务器甚至实例化失败。 ..
文件：.../radius.conf
部分：模块{...}
添加条目：
sql sql1{ ...#config...}
sql sql2{ ...#config...}
部分：实例化 {...} 添加条目：
redundant redundant_sql {
sql1
sql2
handled
}
然后在文件中添加redundant_sql：.../sites-available/default（link已启用站点）
Sections: authorize {...} & post-auth{...} （我不需要accounting）
这是一些调试输出：
实例化（sql1 和 sql2 都必须可以访问才能启动 RADIUS 服务器。这很糟糕，但不是当前的问题）：
radiusd: #### Instantiating modules ####
instantiate {
}
modules {
# Loaded module rlm_sql
# Instantiating module "sql1" from file /etc/raddb/radiusd.conf
sql sql1 {
driver = "rlm_sql_mysql"
server = "**IP sql1**"
port = "3306"
login = "radius"
password = <<< secret >>>
radius_db = "radius"
read_groups = yes
read_clients = no
delete_stale_sessions = yes
sql_user_name = "%{User-Name}"
default_user_profile = ""
client_query = "SELECT id, nasname, shortname, type, secret, server FROM nas"
authorize_check_query = "SELECT id, username, attribute, value, op FROM radcheck WHERE username = '%{SQL-User-Name}' ORDER BY id"
authorize_reply_query = "SELECT id, username, attribute, value, op FROM radreply WHERE username = '%{SQL-User-Name}' ORDER BY id"
authorize_group_check_query = "SELECT id, groupname, attribute, Value, op FROM radgroupcheck WHERE groupname = '%{Sql-Group}' ORDER BY id"
authorize_group_reply_query = "SELECT id, groupname, attribute, value, op FROM radgroupreply WHERE groupname = '%{Sql-Group}' ORDER BY id"
group_membership_query = "SELECT groupname FROM radusergroup WHERE username = BINARY '%{SQL-User-Name}' ORDER BY priority"
simul_count_query = ""
simul_verify_query = "SELECT radacctid, acctsessionid, username, nasipaddress, nasportid, framedipaddress, callingstationid, framedprotocol FROM radacct WHERE username = '%{SQL-User-Name}' AND acctstoptime IS NULL"
safe_characters = "@abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789.-_: /"
}
rlm_sql (sql1): Creating new attribute sql1-SQL-Group
rlm_sql (sql1): Registering sql_groupcmp for sql1-SQL-Group
accounting {
reference = "%{tolower:type.%{Acct-Status-Type}.query}"
}
post-auth {
reference = ".query"
}
mysql {
tls {
}
}
rlm_sql (sql1): Driver rlm_sql_mysql (module rlm_sql_mysql) loaded and linked
rlm_sql (sql1): Attempting to connect to database "radius"
rlm_sql (sql1): Initialising connection pool
pool {
start = 5
min = 4
max = 32
spare = 3
uses = 0
lifetime = 0
cleanup_interval = 30
idle_timeout = 60
retry_delay = 1
spread = no
}
rlm_sql (sql1): Opening additional connection (0)
rlm_sql_mysql: Starting connect to MySQL server
rlm_sql (sql1): Opening additional connection (1)
rlm_sql_mysql: Starting connect to MySQL server
rlm_sql (sql1): Opening additional connection (2)
rlm_sql_mysql: Starting connect to MySQL server
rlm_sql (sql1): Opening additional connection (3)
rlm_sql_mysql: Starting connect to MySQL server
rlm_sql (sql1): Opening additional connection (4)
rlm_sql_mysql: Starting connect to MySQL server
# Instantiating module "sql2" from file /etc/raddb/radiusd.conf
sql sql2 {
driver = "rlm_sql_mysql"
server = "**IP sql2**"
port = "3306"
login = "radius"
password = <<< secret >>>
radius_db = "radius"
read_groups = yes
read_clients = no
delete_stale_sessions = yes
sql_user_name = "%{User-Name}"
default_user_profile = ""
client_query = "SELECT id, nasname, shortname, type, secret, server FROM nas"
authorize_check_query = "SELECT id, username, attribute, value, op FROM radcheck WHERE username = '%{SQL-User-Name}' ORDER BY id"
authorize_reply_query = "SELECT id, username, attribute, value, op FROM radreply WHERE username = '%{SQL-User-Name}' ORDER BY id"
authorize_group_check_query = "SELECT id, groupname, attribute, Value, op FROM radgroupcheck WHERE groupname = '%{Sql-Group}' ORDER BY id"
authorize_group_reply_query = "SELECT id, groupname, attribute, value, op FROM radgroupreply WHERE groupname = '%{Sql-Group}' ORDER BY id"
group_membership_query = "SELECT groupname FROM radusergroup WHERE username = BINARY '%{SQL-User-Name}' ORDER BY priority"
simul_count_query = ""
simul_verify_query = "SELECT radacctid, acctsessionid, username, nasipaddress, nasportid, framedipaddress, callingstationid, framedprotocol FROM radacct WHERE username = '%{SQL-User-Name}' AND acctstoptime IS NULL"
safe_characters = "@abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789.-_: /"
}
rlm_sql (sql2): Creating new attribute sql2-SQL-Group
rlm_sql (sql2): Registering sql_groupcmp for sql2-SQL-Group
accounting {
reference = "%{tolower:type.%{Acct-Status-Type}.query}"
}
post-auth {
reference = ".query"
}
mysql {
tls {
}
}
rlm_sql (sql2): Driver rlm_sql_mysql (module rlm_sql_mysql) loaded and linked
rlm_sql (sql2): Attempting to connect to database "radius"
rlm_sql (sql2): Initialising connection pool
pool {
start = 5
min = 4
max = 32
spare = 3
uses = 0
lifetime = 0
cleanup_interval = 30
idle_timeout = 60
retry_delay = 1
spread = no
}
rlm_sql (sql2): Opening additional connection (0)
rlm_sql_mysql: Starting connect to MySQL server
rlm_sql (sql2): Opening additional connection (1)
rlm_sql_mysql: Starting connect to MySQL server
rlm_sql (sql2): Opening additional connection (2)
rlm_sql_mysql: Starting connect to MySQL server
rlm_sql (sql2): Opening additional connection (3)
rlm_sql_mysql: Starting connect to MySQL server
rlm_sql (sql2): Opening additional connection (4)
rlm_sql_mysql: Starting connect to MySQL server
停止 sql1 并发送请求后，会发生这种情况：
...#irrelevant stuff
Received Access-Request Id 36 from **IP switch**:8345 to **IP RADIUS**:1812 length 128
User-Name = '**mac-address**'
User-Password = '**mac-address**'
NAS-IP-Address = **IP switch**
NAS-Port = 3
NAS-Port-Id = 'Port 3'
NAS-Port-Type = Ethernet
NAS-Identifier = '**nas name**'
Service-Type = Call-Check
Framed-MTU = 1500
Called-Station-Id = '**mac-address**'
Calling-Station-Id = '**mac-address**'
(1) # Executing section authorize from file /etc/raddb/sites-enabled/default
(1) authorize {
(1) [preprocess] = ok
(1) update request {
(1) EXPAND %{tolower:%{1}%{2}%{3}%{4}%{5}%{6}}
(1) --> **mac-address**
(1) Calling-Station-Id := '"**mac-address**"'
(1) User-Name := '&Calling-Station-Id -> '**mac-address**''
(1) User-Password := '&Calling-Station-Id -> '**mac-address**''
(1) } # update request = noop
(1) [updated] = updated
(1) } # if (Calling-Station-Id =~ **Syntax check** = updated
(1) ... skipping else for request 1: Preceding "if" was taken
(1) } # rewrite_calling_station_id rewrite_calling_station_id = updated
(1) detail : EXPAND /var/log/radius/radacct/%{%{Packet-Src-IP-Address}:-%{Packet-Src-IPv6-Address}}/detail-%Y%m%d
(1) detail : --> /var/log/radius/radacct/**IP switch**/detail-20151019
(1) detail : /var/log/radius/radacct/%{%{Packet-Src-IP-Address}:-%{Packet-Src-IPv6-Address}}/detail-%Y%m%d expands to /var/log/radius/radacct/**IP switch**/detail-20151019
(1) detail : EXPAND %t
(1) detail : --> Mon Oct 19 15:03:18 2015
(1) [detail] = ok
(1) redundant redundant_sql {
(1) sql1 : EXPAND %{User-Name}
(1) sql1 : --> **mac-address**
(1) sql1 : SQL-User-Name set to '**mac-address**'
rlm_sql (sql1): Reserved connection (4)
(1) sql1 : EXPAND SELECT id, username, attribute, value, op FROM radcheck WHERE username = '%{SQL-User-Name}' ORDER BY id
(1) sql1 : --> SELECT id, username, attribute, value, op FROM radcheck WHERE username = '**mac-address**' ORDER BY id
rlm_sql (sql1): Executing query: 'SELECT id, username, attribute, value, op FROM radcheck WHERE username = '**mac-address**' ORDER BY id'
rlm_sql_mysql: MYSQL check_error: 2006, returning RLM_SQL_RECONNECT
rlm_sql (sql1): Reconnecting (4)
rlm_sql_mysql: Starting connect to MySQL server
rlm_sql_mysql: Couldn't connect socket to MySQL server radius@**IP sql1**:radius
rlm_sql_mysql: Mysql error 'Can't connect to MySQL server on '**IP sql1**' (111 "Connection refused")'
rlm_sql_mysql: Socket destructor called, closing socket
rlm_sql_mysql: Socket destructor called, closing socket
rlm_sql (sql1): Reserved connection (3)
rlm_sql (sql1): Executing query: 'SELECT id, username, attribute, value, op FROM radcheck WHERE username = '**mac-address**' ORDER BY id'
rlm_sql_mysql: MYSQL check_error: 2006, returning RLM_SQL_RECONNECT
rlm_sql (sql1): Reconnecting (3)
rlm_sql_mysql: Starting connect to MySQL server
rlm_sql_mysql: Couldn't connect socket to MySQL server radius@**IP sql1**:radius
rlm_sql_mysql: Mysql error 'Can't connect to MySQL server on '**IP sql1**' (111 "Connection refused")'
rlm_sql_mysql: Socket destructor called, closing socket
rlm_sql_mysql: Socket destructor called, closing socket
rlm_sql (sql1): Reserved connection (2)
rlm_sql (sql1): Executing query: 'SELECT id, username, attribute, value, op FROM radcheck WHERE username = '**mac-address**' ORDER BY id'
rlm_sql_mysql: MYSQL check_error: 2006, returning RLM_SQL_RECONNECT
rlm_sql (sql1): Reconnecting (2)
rlm_sql_mysql: Starting connect to MySQL server
rlm_sql_mysql: Couldn't connect socket to MySQL server radius@**IP sql1**:radius
rlm_sql_mysql: Mysql error 'Can't connect to MySQL server on '**IP sql1**' (111 "Connection refused")'
rlm_sql_mysql: Socket destructor called, closing socket
rlm_sql_mysql: Socket destructor called, closing socket
rlm_sql (sql1): Reserved connection (1)
rlm_sql (sql1): Executing query: 'SELECT id, username, attribute, value, op FROM radcheck WHERE username = '**mac-address**' ORDER BY id'
rlm_sql_mysql: MYSQL check_error: 2006, returning RLM_SQL_RECONNECT
rlm_sql (sql1): Reconnecting (1)
rlm_sql_mysql: Starting connect to MySQL server
rlm_sql_mysql: Couldn't connect socket to MySQL server radius@**IP sql1**:radius
rlm_sql_mysql: Mysql error 'Can't connect to MySQL server on '**IP sql1**' (111 "Connection refused")'
rlm_sql_mysql: Socket destructor called, closing socket
rlm_sql_mysql: Socket destructor called, closing socket
rlm_sql (sql1): Failed to reconnect (1), no free connections are available
rlm_sql (sql1): Executing query: 'SELECT id, username, attribute, value, op FROM radcheck WHERE username = '**mac-address**' ORDER BY id'
Segmentation fault
在破坏与 sql1 的最后一个连接后，我希望 "redundant" 启动并联系 sql2...但是 RADIUS 反而中止了。
我知道我只 ** IP 和 mac，但如果这个项目毕业 "test-setup-stage"，其他一切都会被正确重置。
我真的很感激任何帮助，因为我有点束手无策了。
非常感谢您阅读到这里！
这是 FreeRADIUS 中的一个缺陷，您应该使用上面发布的信息在 FreeRADIUS issue tracker 上打开一个问题单，如果可以的话，在调试器下从 运行 回溯它。
对于 gdb 你应该能够做到：
gdb --args <path to radiusd> -X
run
bt
回溯将显示问题出在哪里。我曾快速尝试在 v3.1.x 分支上重现它，但未能成功，但这可能是因为该错误需要事先打开连接才能触发缺陷。
首先感谢Arran Cudbard-Bell的帮助！
致 运行 遇到同样问题的其他人；使用最新的 tarball (Version 3.0.10: tar.bz2 (PGP Signature)) 并从中构建包括解决冗余问题的错误修正。
另请注意，wiki 中的条目并不完整。如果要使用多个 sql 实例，则必须另外完成以下操作：
- 如果您以前运行正在使用 sql 的单个实例，请从 raddb/mods-enabled/
中删除 sql 软链接
- 配置sql1和sql2模块时写：group_attribute = "${.:instance}-SQL-Group “ 在 $INCLUDE 之前
${modconfdir}/${.:name}/main/${dialect}/queries.conf"，因为如果你不这样做，标准配置会抛出错误。
虽然配置文件本身对此进行了记录，但 wiki 并未提及。
--感谢@所有&关闭--
我目前正在为 RADIUS 应用程序 运行 FreeRADIUS V.3.xx 结合 MySQL 构建测试设置。整个设置是多余的。所有服务器都是运行虚拟机运行 openSUSE 13.1
我的问题是我似乎无法找到冗余 MySQL 服务器的正确配置。有没有人有这方面的经验？
到目前为止我所做的，基本上是遵循官方freeradius wiki的相关部分...尝试使用rlm_sql_mysql套接字的组、细节、直接操作来提出变体......任何我能想到的......但没有成功。目前它回到了 "wiki status"
即：
我从 .../mods-enabled/ 中删除了 link 到 sql ，因为这导致冗余服务器甚至实例化失败。 ..
文件：.../radius.conf
部分：模块{...} 添加条目：
sql sql1{ ...#config...}
sql sql2{ ...#config...}
部分：实例化 {...} 添加条目：
redundant redundant_sql {
sql1
sql2
handled
}
然后在文件中添加redundant_sql：.../sites-available/default（link已启用站点）
Sections: authorize {...} & post-auth{...} （我不需要accounting）
这是一些调试输出：
实例化（sql1 和 sql2 都必须可以访问才能启动 RADIUS 服务器。这很糟糕，但不是当前的问题）：
radiusd: #### Instantiating modules ####
instantiate {
}
modules {
# Loaded module rlm_sql
# Instantiating module "sql1" from file /etc/raddb/radiusd.conf
sql sql1 {
driver = "rlm_sql_mysql"
server = "**IP sql1**"
port = "3306"
login = "radius"
password = <<< secret >>>
radius_db = "radius"
read_groups = yes
read_clients = no
delete_stale_sessions = yes
sql_user_name = "%{User-Name}"
default_user_profile = ""
client_query = "SELECT id, nasname, shortname, type, secret, server FROM nas"
authorize_check_query = "SELECT id, username, attribute, value, op FROM radcheck WHERE username = '%{SQL-User-Name}' ORDER BY id"
authorize_reply_query = "SELECT id, username, attribute, value, op FROM radreply WHERE username = '%{SQL-User-Name}' ORDER BY id"
authorize_group_check_query = "SELECT id, groupname, attribute, Value, op FROM radgroupcheck WHERE groupname = '%{Sql-Group}' ORDER BY id"
authorize_group_reply_query = "SELECT id, groupname, attribute, value, op FROM radgroupreply WHERE groupname = '%{Sql-Group}' ORDER BY id"
group_membership_query = "SELECT groupname FROM radusergroup WHERE username = BINARY '%{SQL-User-Name}' ORDER BY priority"
simul_count_query = ""
simul_verify_query = "SELECT radacctid, acctsessionid, username, nasipaddress, nasportid, framedipaddress, callingstationid, framedprotocol FROM radacct WHERE username = '%{SQL-User-Name}' AND acctstoptime IS NULL"
safe_characters = "@abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789.-_: /"
}
rlm_sql (sql1): Creating new attribute sql1-SQL-Group
rlm_sql (sql1): Registering sql_groupcmp for sql1-SQL-Group
accounting {
reference = "%{tolower:type.%{Acct-Status-Type}.query}"
}
post-auth {
reference = ".query"
}
mysql {
tls {
}
}
rlm_sql (sql1): Driver rlm_sql_mysql (module rlm_sql_mysql) loaded and linked
rlm_sql (sql1): Attempting to connect to database "radius"
rlm_sql (sql1): Initialising connection pool
pool {
start = 5
min = 4
max = 32
spare = 3
uses = 0
lifetime = 0
cleanup_interval = 30
idle_timeout = 60
retry_delay = 1
spread = no
}
rlm_sql (sql1): Opening additional connection (0)
rlm_sql_mysql: Starting connect to MySQL server
rlm_sql (sql1): Opening additional connection (1)
rlm_sql_mysql: Starting connect to MySQL server
rlm_sql (sql1): Opening additional connection (2)
rlm_sql_mysql: Starting connect to MySQL server
rlm_sql (sql1): Opening additional connection (3)
rlm_sql_mysql: Starting connect to MySQL server
rlm_sql (sql1): Opening additional connection (4)
rlm_sql_mysql: Starting connect to MySQL server
# Instantiating module "sql2" from file /etc/raddb/radiusd.conf
sql sql2 {
driver = "rlm_sql_mysql"
server = "**IP sql2**"
port = "3306"
login = "radius"
password = <<< secret >>>
radius_db = "radius"
read_groups = yes
read_clients = no
delete_stale_sessions = yes
sql_user_name = "%{User-Name}"
default_user_profile = ""
client_query = "SELECT id, nasname, shortname, type, secret, server FROM nas"
authorize_check_query = "SELECT id, username, attribute, value, op FROM radcheck WHERE username = '%{SQL-User-Name}' ORDER BY id"
authorize_reply_query = "SELECT id, username, attribute, value, op FROM radreply WHERE username = '%{SQL-User-Name}' ORDER BY id"
authorize_group_check_query = "SELECT id, groupname, attribute, Value, op FROM radgroupcheck WHERE groupname = '%{Sql-Group}' ORDER BY id"
authorize_group_reply_query = "SELECT id, groupname, attribute, value, op FROM radgroupreply WHERE groupname = '%{Sql-Group}' ORDER BY id"
group_membership_query = "SELECT groupname FROM radusergroup WHERE username = BINARY '%{SQL-User-Name}' ORDER BY priority"
simul_count_query = ""
simul_verify_query = "SELECT radacctid, acctsessionid, username, nasipaddress, nasportid, framedipaddress, callingstationid, framedprotocol FROM radacct WHERE username = '%{SQL-User-Name}' AND acctstoptime IS NULL"
safe_characters = "@abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789.-_: /"
}
rlm_sql (sql2): Creating new attribute sql2-SQL-Group
rlm_sql (sql2): Registering sql_groupcmp for sql2-SQL-Group
accounting {
reference = "%{tolower:type.%{Acct-Status-Type}.query}"
}
post-auth {
reference = ".query"
}
mysql {
tls {
}
}
rlm_sql (sql2): Driver rlm_sql_mysql (module rlm_sql_mysql) loaded and linked
rlm_sql (sql2): Attempting to connect to database "radius"
rlm_sql (sql2): Initialising connection pool
pool {
start = 5
min = 4
max = 32
spare = 3
uses = 0
lifetime = 0
cleanup_interval = 30
idle_timeout = 60
retry_delay = 1
spread = no
}
rlm_sql (sql2): Opening additional connection (0)
rlm_sql_mysql: Starting connect to MySQL server
rlm_sql (sql2): Opening additional connection (1)
rlm_sql_mysql: Starting connect to MySQL server
rlm_sql (sql2): Opening additional connection (2)
rlm_sql_mysql: Starting connect to MySQL server
rlm_sql (sql2): Opening additional connection (3)
rlm_sql_mysql: Starting connect to MySQL server
rlm_sql (sql2): Opening additional connection (4)
rlm_sql_mysql: Starting connect to MySQL server
停止 sql1 并发送请求后，会发生这种情况：
...#irrelevant stuff
Received Access-Request Id 36 from **IP switch**:8345 to **IP RADIUS**:1812 length 128
User-Name = '**mac-address**'
User-Password = '**mac-address**'
NAS-IP-Address = **IP switch**
NAS-Port = 3
NAS-Port-Id = 'Port 3'
NAS-Port-Type = Ethernet
NAS-Identifier = '**nas name**'
Service-Type = Call-Check
Framed-MTU = 1500
Called-Station-Id = '**mac-address**'
Calling-Station-Id = '**mac-address**'
(1) # Executing section authorize from file /etc/raddb/sites-enabled/default
(1) authorize {
(1) [preprocess] = ok
(1) update request {
(1) EXPAND %{tolower:%{1}%{2}%{3}%{4}%{5}%{6}}
(1) --> **mac-address**
(1) Calling-Station-Id := '"**mac-address**"'
(1) User-Name := '&Calling-Station-Id -> '**mac-address**''
(1) User-Password := '&Calling-Station-Id -> '**mac-address**''
(1) } # update request = noop
(1) [updated] = updated
(1) } # if (Calling-Station-Id =~ **Syntax check** = updated
(1) ... skipping else for request 1: Preceding "if" was taken
(1) } # rewrite_calling_station_id rewrite_calling_station_id = updated
(1) detail : EXPAND /var/log/radius/radacct/%{%{Packet-Src-IP-Address}:-%{Packet-Src-IPv6-Address}}/detail-%Y%m%d
(1) detail : --> /var/log/radius/radacct/**IP switch**/detail-20151019
(1) detail : /var/log/radius/radacct/%{%{Packet-Src-IP-Address}:-%{Packet-Src-IPv6-Address}}/detail-%Y%m%d expands to /var/log/radius/radacct/**IP switch**/detail-20151019
(1) detail : EXPAND %t
(1) detail : --> Mon Oct 19 15:03:18 2015
(1) [detail] = ok
(1) redundant redundant_sql {
(1) sql1 : EXPAND %{User-Name}
(1) sql1 : --> **mac-address**
(1) sql1 : SQL-User-Name set to '**mac-address**'
rlm_sql (sql1): Reserved connection (4)
(1) sql1 : EXPAND SELECT id, username, attribute, value, op FROM radcheck WHERE username = '%{SQL-User-Name}' ORDER BY id
(1) sql1 : --> SELECT id, username, attribute, value, op FROM radcheck WHERE username = '**mac-address**' ORDER BY id
rlm_sql (sql1): Executing query: 'SELECT id, username, attribute, value, op FROM radcheck WHERE username = '**mac-address**' ORDER BY id'
rlm_sql_mysql: MYSQL check_error: 2006, returning RLM_SQL_RECONNECT
rlm_sql (sql1): Reconnecting (4)
rlm_sql_mysql: Starting connect to MySQL server
rlm_sql_mysql: Couldn't connect socket to MySQL server radius@**IP sql1**:radius
rlm_sql_mysql: Mysql error 'Can't connect to MySQL server on '**IP sql1**' (111 "Connection refused")'
rlm_sql_mysql: Socket destructor called, closing socket
rlm_sql_mysql: Socket destructor called, closing socket
rlm_sql (sql1): Reserved connection (3)
rlm_sql (sql1): Executing query: 'SELECT id, username, attribute, value, op FROM radcheck WHERE username = '**mac-address**' ORDER BY id'
rlm_sql_mysql: MYSQL check_error: 2006, returning RLM_SQL_RECONNECT
rlm_sql (sql1): Reconnecting (3)
rlm_sql_mysql: Starting connect to MySQL server
rlm_sql_mysql: Couldn't connect socket to MySQL server radius@**IP sql1**:radius
rlm_sql_mysql: Mysql error 'Can't connect to MySQL server on '**IP sql1**' (111 "Connection refused")'
rlm_sql_mysql: Socket destructor called, closing socket
rlm_sql_mysql: Socket destructor called, closing socket
rlm_sql (sql1): Reserved connection (2)
rlm_sql (sql1): Executing query: 'SELECT id, username, attribute, value, op FROM radcheck WHERE username = '**mac-address**' ORDER BY id'
rlm_sql_mysql: MYSQL check_error: 2006, returning RLM_SQL_RECONNECT
rlm_sql (sql1): Reconnecting (2)
rlm_sql_mysql: Starting connect to MySQL server
rlm_sql_mysql: Couldn't connect socket to MySQL server radius@**IP sql1**:radius
rlm_sql_mysql: Mysql error 'Can't connect to MySQL server on '**IP sql1**' (111 "Connection refused")'
rlm_sql_mysql: Socket destructor called, closing socket
rlm_sql_mysql: Socket destructor called, closing socket
rlm_sql (sql1): Reserved connection (1)
rlm_sql (sql1): Executing query: 'SELECT id, username, attribute, value, op FROM radcheck WHERE username = '**mac-address**' ORDER BY id'
rlm_sql_mysql: MYSQL check_error: 2006, returning RLM_SQL_RECONNECT
rlm_sql (sql1): Reconnecting (1)
rlm_sql_mysql: Starting connect to MySQL server
rlm_sql_mysql: Couldn't connect socket to MySQL server radius@**IP sql1**:radius
rlm_sql_mysql: Mysql error 'Can't connect to MySQL server on '**IP sql1**' (111 "Connection refused")'
rlm_sql_mysql: Socket destructor called, closing socket
rlm_sql_mysql: Socket destructor called, closing socket
rlm_sql (sql1): Failed to reconnect (1), no free connections are available
rlm_sql (sql1): Executing query: 'SELECT id, username, attribute, value, op FROM radcheck WHERE username = '**mac-address**' ORDER BY id'
Segmentation fault
在破坏与 sql1 的最后一个连接后，我希望 "redundant" 启动并联系 sql2...但是 RADIUS 反而中止了。
我知道我只 ** IP 和 mac，但如果这个项目毕业 "test-setup-stage"，其他一切都会被正确重置。
我真的很感激任何帮助，因为我有点束手无策了。
非常感谢您阅读到这里！
这是 FreeRADIUS 中的一个缺陷，您应该使用上面发布的信息在 FreeRADIUS issue tracker 上打开一个问题单，如果可以的话，在调试器下从 运行 回溯它。
对于 gdb 你应该能够做到：
gdb --args <path to radiusd> -X
run
bt
回溯将显示问题出在哪里。我曾快速尝试在 v3.1.x 分支上重现它，但未能成功，但这可能是因为该错误需要事先打开连接才能触发缺陷。
首先感谢Arran Cudbard-Bell的帮助！
致 运行 遇到同样问题的其他人；使用最新的 tarball (Version 3.0.10: tar.bz2 (PGP Signature)) 并从中构建包括解决冗余问题的错误修正。
另请注意，wiki 中的条目并不完整。如果要使用多个 sql 实例，则必须另外完成以下操作：
- 如果您以前运行正在使用 sql 的单个实例，请从 raddb/mods-enabled/ 中删除 sql 软链接
- 配置sql1和sql2模块时写：group_attribute = "${.:instance}-SQL-Group “ 在 $INCLUDE 之前 ${modconfdir}/${.:name}/main/${dialect}/queries.conf"，因为如果你不这样做，标准配置会抛出错误。
虽然配置文件本身对此进行了记录，但 wiki 并未提及。
--感谢@所有&关闭--