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Thread: best way to upgrade glibc?

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    Default best way to upgrade glibc?

    Hi,

    I am using RHEL3 and RHEL4 in my production environment. Well, one of application need glibc-2.4 and later to run on it and I need to upgrade glibc-2.3 to glibc-2.4 or above.

    Http (apache), vsftp, mysql, php, nfs, and some other 3rd party servers like tomcat are installed/configured on these machines. To be honest I dont have any down time but I will manage some downtime if it would be very necessary.

    Can someone guide me the best and safest way to upgrade the glibc?

    RHEL3 -------

    $ cat /etc/redhat-release
    Red Hat Enterprise Linux ES release 3 (Taroon Update 9)

    $ uname -r
    2.4.21-32.ELsmp

    $ rpm -qa | grep glibc
    glibc-2.3.2-95.50
    glibc-headers-2.3.2-95.50
    glibc-kernheaders-2.4-8.34.5
    glibc-common-2.3.2-95.50
    glibc-devel-2.3.2-95.50

    RHEL4 ------

    # cat /etc/redhat-release
    Red Hat Enterprise Linux ES release 4 (Nahant Update 4)

    # uname -r
    2.6.9-5.ELsmp

    # rpm -qa | grep glibc
    glibc-common-2.3.4-2.25
    glibc-devel-2.3.4-2.25
    glibc-2.3.4-2.25
    glibc-kernheaders-2.4-9.1.98.EL
    glibc-headers-2.3.4-2.25


    waiting for any help.

    Many thanks.

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    Default

    No, you can't. RHEL works on 5 year long time period support. To get latest glibc, you need to upgrade RHEL 4 or RHEL 5.

    You can compile yourself but it is going to hurt a lot. Therefor, I recommend upgrading entire distro.
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    Default

    Thanks for you reply. so you mean I should go for upgrade directly to RHEL5 from DVD? If i upgrade it then what would happen to the existing services dependencies? like who knows mysql/http or nfs depends on the libs.

    If i get the licenses for these boxes from Redhat, would up2date will help in this scenario?

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    You can upgrade but I strongly recommend backing up system. Also, up2date only works with RHEL 4.x. RHEL 5.x has yum, which can update to any new version. up2date has many limitations.
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    You mean up2date will not work on RHEL3? what risks would be to use up2date?

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