runtime error: invalid memory address or nil pointer dereference

[whisperzer0]

Hey, I've had to use a precompiled binary as I couldn't get the source to compile.

[389ds_exporter]$ make
>> checking code style
GOOS= GOARCH= go get -u honnef.co/go/tools/cmd/staticcheck
>> running staticcheck
/home/deploy/go/bin/staticcheck -ignore "" ./...
flag provided but not defined: -ignore
Usage of staticcheck:
        staticcheck [flags] # runs on package in current directory
        staticcheck [flags] packages
        staticcheck [flags] directory
        staticcheck [flags] files... # must be a single package
Flags:
make: *** [Makefile.common:93: common-staticcheck] Error 2

Precompiled Binary

[389ds_exporter-0.1.2.linux-386]$ ./389ds_exporter -ldap.addr "omitted" -ipa-domain "omitted" -ldap.pass "omitted" -web.listen-address "omitted"
INFO[0000] Starting prometheus HTTP metrics server on omitted:9496 
INFO[0000] Starting 389ds scraper for omitted:389  
2020/09/08 12:57:49 ldap: recovered panic in processMessages: runtime error: invalid memory address or nil pointer dereference
ERRO[0060] Scrape failed, error is:LDAP Result Code 200 "Network Error": ldap: response channel closed 
INFO[0060] Scrape completed in 0.000775 seconds         

CentOS Linux release 8.2.2004 (Core)

[whisperzer0]

Sort of fixed it.

Comment out the following lines

123: //func objectClass(name string) string {
124: //      return fmt.Sprintf("(objectClass=%v)", name)
125: //}

Alter line 256 with fmt.ErrorF

256: return -1, fmt.Errorf(fmt.Sprintf("No entries contain numSuborindates for %s (%s)", baseDN, searchFilter))

Remove error from import at line 4

3: import (
4: "fmt"
5: "strconv"
6: "strings"
7: "time"

Now starts, but fails on LDAP objects.

INFO[0000] Starting prometheus HTTP metrics server on x:9496 
INFO[0000] Starting 389ds scraper for x:389  
ERRO[0060] Scrape failed, error is:1 error occurred:
        * LDAP Result Code 32 "No Such Object": 
 INFO[0060] Scrape completed in 0.056049 seconds    

I wonder if its due to the commented out objectClass function.

[terricain]

I no longer have a FreeIPA to test against, when it says the No Such Object error does http://localhost:9496/metrics return any useful metrics?