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This article describes how to resolve an error indicating Azure Linux is unsupported in System Center Operations Manager 2025.
Issue: In System Center Operations Manager 2025, you may encounter an error when you attempt to discover Linux machines running in Azure.
Error message - Azure Linux and Arc Linux Machines are unsupported.
Note
This workaround applies only to System Center Operations Manager 2025. If you encounter this error in SCOM Managed Instance, see Monitor Linux machines as monitoring of Azure Linux VMs is not supported on SCOM Managed Instance.
Workaround:
To resolve this error, do the following on all Management Servers in the Linux Resource Pools:
Copy the following script and replace with the contents of the GetOSVersion.sh file located in the UnixAgents directory -
C:\Program Files\Microsoft System Center\Operations Manager\Server\AgentManagement\UnixAgents\.Hostname=`uname -n` OSName=`uname -s` Version=`uname -r` # Version command for Unix; For Linux we look in /etc/issue Arch=`uname -m` # Overridden as uname -p on some platforms OSAlias="Unknown" # OSAlias is used by discovery wizard IsLinux="false" # Used by the discovery wizard for workflow ReleaseFile=`echo $PLATFORM_RELEASE_FILE_SCX_INSTALLER_INPUT` EtcPath="/etc" ## Function used to get Linux Distro and Version ###################################################################### GetKitType() { # The os-release file doesn't tell us the type of kit, so try to determine if [ `rpm -q rpm 2> /dev/null | /bin/egrep '^rpm-[0-9].*' | wc -l` = 1 ]; then OSAlias="UniversalR" elif [ `dpkg -l dpkg 2> /dev/null | egrep "^ii.*"| wc -l` = 1 ]; then OSAlias="UniversalD" else OSAlias="Universal?" fi } GetLinuxInfo() { IsLinux="true" # Return kernel version as OS version - will be updated for specific cases below Version=`uname -r | cut -d. -f1,2` # Determine release file # Try to find -release file if [ -z ${ReleaseFile} ]; then ReleaseFile=`ls -F ${EtcPath}/*-release 2>/dev/null | grep -v lsb-release |grep -v release@| grep -v scx-release| sed -n '1p'` fi # Fall back to lsb-release (e.g. Ubunutu) if [ -z ${ReleaseFile} ]; then if [ -e "${EtcPath}/lsb-release" ]; then ReleaseFile="${EtcPath}/lsb-release"; fi fi # Debian (no lsb-release, but debian_version exists) if [ -z ${ReleaseFile} ]; then TestFile="${EtcPath}/debian_version" if [ -e $TestFile ]; then ReleaseFile=$TestFile; fi fi # Try RHEL/CentOS TestFile="${EtcPath}/redhat-release" if [ ! -h $TestFile -a -e $TestFile ]; then ReleaseFile=$TestFile; fi # Try OEL TestFile="${EtcPath}/oracle-release" if [ ! -h $TestFile -a -e $TestFile ]; then ReleaseFile=$TestFile; fi # Try NeoKylin TestFile="${EtcPath}/neokylin-release" if [ ! -h $TestFile -a -e $TestFile ]; then ReleaseFile=$TestFile; fi # Try SLES TestFile="${EtcPath}/SuSE-release" if [ ! -h $TestFile -a -e $TestFile ]; then ReleaseFile=$TestFile; fi # Get OS Name if [ ! -z $ReleaseFile ]; then OSName=`/bin/egrep -o 'Red Hat Enterprise Linux|SUSE Linux Enterprise Server|SUSE LINUX Enterprise Server' $ReleaseFile` fi ## Extract Version from file ## Could also use /etc/*release (not Ubuntu) if [ "${OSName}" = "Red Hat Enterprise Linux" ]; then Version=`grep 'Red Hat Enterprise' $ReleaseFile | sed s/.*release\ // | sed s/\ .*//` if [ "${Version}" != "" ]; then OSAlias="RHEL" OSManufacturer="Red Hat, Inc." fi elif [ "${OSName}" = "SUSE Linux Enterprise Server" ]; then # SLES 10 uses "Linux". Need to parse the minor version as SLES 10.0 is not supported, only 10.1 and up # SLES 15 uses /etc/os-release as $ReleaseFile. It contains all information inside "" so Version appears like 15". Need to parse the Version to remove " Version=`grep 'SUSE Linux Enterprise Server' $ReleaseFile | sed 's/.*Server\ \| (.*\|\"//g'` # Discovery Wizard wants "10.X" not "10 SPX" if [ `echo ${Version} | grep 'SP' | wc -l` -eq 1 ]; then Version=`echo ${Version} | awk '{print $1"."$2}'| sed s/SP//` else VersionPL=`grep PATCHLEVEL $ReleaseFile | sed s/.*PATCHLEVEL\ =\ //` if [ "${VersionPL}" != "" ]; then Version=`echo ${Version}.${VersionPL}` fi fi if [ "${Version}" != "" ]; then OSAlias="SLES" OSManufacturer="SUSE GmbH" fi elif [ "${OSName}" = "SUSE LINUX Enterprise Server" ]; then # SLES 9 uses "LINUX". No need to parse minor version as Agent supports 9.0 and up. Version=`grep 'SUSE LINUX Enterprise Server' $ReleaseFile | sed s/.*Server\ // | sed s/\ \(.*//` if [ "${Version}" != "" ]; then OSAlias="SLES" OSManufacturer="SUSE GmbH" fi else OSAlias="Universal" OSName="Linux" Version=`uname -r | cut -d. -f1,2` # Do we have the (newer) os-release standard file? # If so, that trumps everything else if [ -e "${EtcPath}/os-release" ]; then ReleaseFile="${EtcPath}/os-release" GetKitType # The os-release files contain TAG=VALUE pairs; just read it in . $ReleaseFile # Some fields are optional, for details see the WWW site: # http://www.freedesktop.org/software/systemd/man/os-release.html [ ! -z "$NAME" ] && OSName="$NAME" [ ! -z "$VERSION_ID" ] && Version="$VERSION_ID" # Set the manufacturer if we know this ID # (Set OSAlias for unit test purposes; test injection won't inject that) [ -z "$ID" ] && ID="linux" case $ID in debian) OSManufacturer="Softare in the Public Interest, Inc." OSAlias="UniversalD" ;; opensuse) OSManufacturer="SUSE GmbH" OSAlias="UniversalR" ;; esac elif [ ! -z $ReleaseFile ]; then # Set OSName to release file contents for evaluation. If parsing logic is not known, Release File contents will be used as OSName. OSName=`sed '/^$/d' ${ReleaseFile} | head -1` # Try known cases for OSName/Version # ALT Linux if [ `echo $OSName | grep "ALT Linux" | wc -l` -gt 0 ]; then OSName="ALT Linux" OSAlias="UniversalR" OSManufacturer="ALT Linux Ltd" Version=`grep 'ALT Linux' $ReleaseFile | sed s/.*Linux\ // | sed s/\ \.*//` fi # Enterprise Linux Server if [ `echo $OSName | grep "Enterprise Linux Enterprise Linux Server" | wc -l` -gt 0 ]; then OSName="Enterprise Linux Server" OSAlias="UniversalR" OSManufacturer="Oracle Corporation" Version=`grep 'Enterprise Linux Enterprise Linux Server' $ReleaseFile | sed s/.*release\ // | sed s/\ \(.*//` fi # Oracle Enterprise Linux Server if [ `echo $OSName | grep "Oracle Linux Server" | wc -l` -gt 0 ]; then OSName="Oracle Linux Server" OSAlias="UniversalR" OSManufacturer="Oracle Corporation" Version=`grep 'Oracle Linux Server release' $ReleaseFile | sed s/.*release\ // | sed s/\ \(.*//` fi # NeoKylin Linux Advanced Server if [ `echo $OSName | grep "NeoKylin Linux Advanced Server" | wc -l` -gt 0 ]; then OSName="NeoKylin Linux Server" OSAlias="UniversalR" OSManufacturer="China Standard Software Co., Ltd." Version=`grep 'NeoKylin Linux Advanced Server release' $ReleaseFile | sed s/.*release\ // | sed s/\ \(.*//` fi # OpenSUSE if [ `echo $OSName | grep -i "openSUSE" | wc -l` -gt 0 ]; then Version=`echo $OSName | awk '{print $2}'` OSName="openSUSE" OSAlias="UniversalR" OSManufacturer="SUSE GmbH" fi # Debian if [ "$ReleaseFile" = "${EtcPath}/debian_version" ]; then OSName="Debian" OSAlias="UniversalD" OSManufacturer="Softare in the Public Interest, Inc." Version=`cat ${EtcPath}/debian_version` fi # Ubuntu if [ `echo $OSName | grep "Ubuntu" | wc -l` -gt 0 ]; then OSName="Ubuntu" OSAlias="UniversalD" OSManufacturer="Canonical Group Limited " Version=`grep 'DISTRIB_RELEASE' $ReleaseFile | cut -d'=' -f2` fi # Fedora if [ `echo $OSName | grep "Fedora" | wc -l` -gt 0 ]; then OSName="Fedora" OSAlias="UniversalR" OSManufacturer="Red Hat, Inc." Version=`grep 'Fedora' $ReleaseFile | sed s/.*release\ // | sed s/\ .*//` fi # CentOS if [ `echo $OSName | grep "CentOS" | wc -l` -gt 0 ]; then OSName="CentOS" OSAlias="UniversalR" OSManufacturer="Central Logistics GmbH" Version=`grep 'CentOS' $ReleaseFile | sed s/.*release\ // | sed s/\ .*//` fi # If distro is not known, determine whether RPM or DPKG is installed if [ "${OSAlias}" = "Universal" ]; then # Identify package manager GetKitType fi # If Version is null, something went wrong in release file parsing, reset to kernel version if [ "$Version" = "" ]; then Version=`uname -r` fi # If OSName is null, something went wrong in release file parsing, reset to Linux if [ "$OSName" = "" ]; then OSName="Linux" OSManufacturer="Universal" fi else GetKitType Version=`uname -r` OSName="Linux" OSManufacturer="Universal" fi fi if [ -z `echo ${Version} | grep '\.'` ]; then Version="$Version.0" fi # Construct OSFullName string OSFullName="$OSName $Version ($Arch)" } ## End Linux distro function ###################################################################### ## Determine Version of Unix Platforms if [ "${OSName}" = "HP-UX" ] then # Version=`uname -r | awk -FB. '{print $2}'` Version=`uname -r` OSAlias="HPUX" elif [ "${OSName}" = "AIX" ] then Version=`oslevel` OSAlias="AIX" Arch=`uname -p` elif [ "${OSName}" = "SunOS" ] then # Keeping commented code for changing "5.10" to "10" # Version=`uname -r | awk -F. '{print $2}'` Version=`uname -r` OSAlias="Solaris" Arch=`uname -p` echo $OSName ## If the OS is Linux, then we need to call the function to get our data elif [ "${OSName}" = "Linux" ] then GetLinuxInfo else echo "<OSName>Unknown</OSName>" exit 0 fi ## Format in XML ouput readable by OpsMgr echo "<DiscoveredOS><Hostname>${Hostname}</Hostname><OSName>${OSName}</OSName><OSAlias>${OSAlias}</OSAlias><Version>${Version}</Version><Arch>${Arch}</Arch><IsLinux>${IsLinux}</IsLinux></DiscoveredOS>"Restart the Operations Manager console and reattempt to discover the Linux machines running in Azure.