Delete all entries from an ACL expression or file.
An ACL is split into four parts:
a name for the ACL, which you choose
a fetch to collect information from the client's session
a value to match against
In the example below, we mark these parts:
frontend www bind :80 # name fetch flags value acl static_url path -i -m beg /images/ /scripts/
Here, there is initially two values, /images/ and /scripts/. Use
clear acl to delete all values.
You can also store values in a file and then reference that file in an
acl statement by using the
-f /path/to/file flag. Use the
clear acl command to delete all values from the file. Note that this only removes it from HAProxy Enterprise's runtime memory and not to the file on disk.
In this example, we start with the following ACL expression in the configuration, which checks whether the requested URL path begins with /images/ or /scripts/:
frontend www bind :80 acl static_url path -i -m beg /images/ /scripts/
First, display a list of defined ACLs by calling
$ echo "show acl" | socat stdio tcp4-connect:127.0.0.1:9999 # id (file) description 0 () acl 'path' file '/etc/hapee-1.7/hapee-lb.cfg' line 51
clear acl to remove the values /images/ and /scripts/. Pass to it the ID of the ACL:
$ echo "clear acl #0" | socat stdio tcp4-connect:127.0.0.1:9999
ACL values may also be stored in a file. Given you have a file named paths.acl with the following list of values:
You would reference this file with an ACL expression like this:
frontend www bind :80 acl static_url path -i -m beg -f /etc/hapee-1.7/paths.acl
In the next example, we remove all values from the ACL file /etc/hapee-1.7/paths.acl:
$ echo "clear acl /etc/hapee-1.7/paths.acl" | socat stdio tcp4-connect:127.0.0.1:9999