kadmin.local: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On CentOS possible default full paths are:

/usr/sbin/kadmin.local - from package: krb5-server

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/sbin/kadmin.local - from package: krb5-admin-server

You may install the required package with command apt-get install {package}

Error in other languages:
kadmin.local: bevel nie gevind nie
kadmin.local: comandă negăsită
kadmin.local: comando não encontrado
kadmin.local: commande introuvable
kadmin.local: command not found
kadmin.local: käsku ei ole
kadmin.local: không tìm thấy lệnh
kadmin.local: komanda nerasta
kadmin.local: Kommando nicht gefunden.
kadmin.local: kommandot finns inte
kadmin.local: komut yok
kadmin.local: nie znaleziono polecenia
kadmin.local: níor aimsíodh an t-ordú
kadmin.local: no se encontró la orden
kadmin.local: no s'ha trobat l'ordre
kadmin.local: opdracht niet gevonden
kadmin.local: parancs nem található
kadmin.local: perintah tidak ditemukan
kadmin.local: príkaz nenájdený
kadmin.local: příkaz nenalezen
kadmin.local: команда не найдена
kadmin.local: командата не е открита
kadmin.local: 命令找不到
kadmin.local: コマンドが見つかりません