<p>Beberapa waktu lalu, saya ada melakukan update minor server Zimbra milik client. Proses update tersebut dilakukan untuk meningkatkan keamanan pada email server. Untuk update ini prosesnya cukup mudah yaitu hanya dengan menjalankan perintah yum update. Namun saat menjalankan perintah tersebut, muncul pesan error sebagai berikut</p>
<pre>Transaction check error: 
 installing package kernel-3.10.0-1160.11.1.el7.x86_64 needs 17MB on the /boot filesystem 
 
Error Summary 
------------- 
Disk Requirements: 
 At least 17MB more space needed on the /boot filesystem.</pre>
<p>Dari pesan error tersebut menunjukan bahwa update membutuhkan free space sekitar 17MB pada /boot. Saya coba cek silang dengan perintah df -h, ternyata partisi /boot tersedia free space hanya 15MB saja</p>
<pre>[root@mail developer]# df -h 
Filesystem Size Used Avail Use% Mounted on 
<span style="color: #0000ff;">/dev/sda1 197M 182M 15M 93% /boot 
</span></pre>
<p>Setelah membaca dari beberapa referensi, hal tersebut dikarenakan ada beberapa versi kernel yang terinstall pada server sehingga memenuhi partisi /boot. Untuk eskalasinya yaitu dengan menghapus versi kernel yang tidak digunakan oleh sistem. Berikut ini langkah-langkah eskalasinya</p>
<p><strong>Baca Juga : <a href="https://rizkypratama.id/blog/2020/02/27/mengubah-reserved-space-pada-partisi-linux/" target="_blank" rel="noopener">Mengubah Reserved Space pada Partisi Linux</a></strong></p>
<p>1. Cek seluruh kernel yang terinstall</p>
<pre>yum list kernel</pre>
<p><img data-attachment-id="2234" data-permalink="https://rizkypratama.id/blog/2021/01/12/cara-mengatasi-at-least-xmb-more-space-needed-on-the-boot-filesystem/list_kernel/" data-orig-file="https://i0.wp.com/rizkypratama.id/wp-content/uploads/2021/01/list_kernel.png?fit=999%2C215&;ssl=1" data-orig-size="999,215" data-comments-opened="1" data-image-meta="{";aperture";:";0";,";credit";:";";,";camera";:";";,";caption";:";";,";created_timestamp";:";0";,";copyright";:";";,";focal_length";:";0";,";iso";:";0";,";shutter_speed";:";0";,";title";:";";,";orientation";:";0";}" data-image-title="list_kernel" data-image-description="" data-image-caption="" data-medium-file="https://i0.wp.com/rizkypratama.id/wp-content/uploads/2021/01/list_kernel.png?fit=300%2C65&;ssl=1" data-large-file="https://i0.wp.com/rizkypratama.id/wp-content/uploads/2021/01/list_kernel.png?fit=810%2C174&;ssl=1" class="aligncenter wp-image-2234 size-full" src="https://rizkypratama.id/wp-content/uploads/2021/01/list_kernel.png" alt="List Kernel" width="999" height="215" /></p>
<p>Lihat pada kernel yang digarisbawahi, itu merupakan versi kernel yang tidak digunakan, itu bisa kita hapus</p>
<p>2. Untuk menghapus kernel tersebut, kita bisa pakai tools bawaan supaya lebih aman, install tools yum-utils</p>
<pre>yum install yum-utils -y</pre>
<p>3. Jalankan perintah package-cleanup untuk menghapus kernel tersebut</p>
<pre>package-cleanup --oldkernels --count=2</pre>
<p>Maksud dari &#8211;count=2 artinya kita biarkan 2 versi kernel saja yang terinstall, sisanya dihapus</p>
<p>4. Untuk set permanent agar hanya selalu 2 versi kernel saja yang terinstall, silakan edit file <span class="s1">/etc/yum.conf, ubah value pada baris berikut menjadi nilai nya 2</span></p>
<pre>installonly_limit=2</pre>
<p>5. Cek kembali dengan perintah df -h, free space saat ini sudah 54MB, semestinya sudah mencukupi untuk melakukan update kembali</p>
<pre>[root@mail developer]# df -h 
Filesystem Size Used Avail Use% Mounted on 
<span style="color: #0000ff;">/dev/sda1 197M 143M 54M 73% /boot 
</span></pre>
<p>Alhamdulillah proses update minor server Zimbra berhasil dilakukan</p>
<p>Mungkin cukup sekian, semoga bermanfaat</p>
<div class="saboxplugin-wrap" itemtype="http://schema.org/Person" itemscope itemprop="author"><div class="saboxplugin-tab"><div class="saboxplugin-gravatar"><img src="https://rizkypratama.id/wp-content/uploads/2020/09/My-Photos.jpg" width="100" height="100" alt="My Photos" itemprop="image"></div><div class="saboxplugin-authorname"><a href="https://rizkypratama.id/blog/author/rizky/" class="vcard author" rel="author"><span class="fn">Rizky Pratama</span></a></div><div class="saboxplugin-desc"><div itemprop="description"><p>Rizky Pratama. Tinggal di Bekasi, Jawa Barat. Seorang IT di salah satu perusahaan IT. Pengguna Mac, Linux dan Windows<br />
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