Before you type any one of the following command make sure that you have a backup of your important data before continuing to update your system. It is important that you keep full backup of your system. Alpine Linux is built around musl libc and busybox. This makes it smaller and more resource efficient than traditional GNU/Linux distributions. A container requires no more than 8 MB and a minimal installation to disk requires around 130 MB of storage. Not only do you get a fully-fledged Linux environment but a large selection of packages from the repository.
Alpine Linux was designed with security in mind. The kernel is patched with an unofficial port of grsecurity/PaX, and all userland binaries are compiled as Position Independent Executables (PIE) with stack smashing protection. These proactive security features prevent exploitation of entire classes of zero-day and other vulnerabilities. When Alpine Linux is installed to hard drive or as LXD VM, upgrading to a newer stable version is straightforward.
Make a backup of your LXD container
Type the following command to create container snapshots:
$ lxc snapshot alpine-www01 "snap0-Dec-05-2017-b4-update"
$ lxc info alpine-www01
Name: alpine-www01 Remote: unix:// Architecture: x86_64 Created: 2017/07/17 11:38 UTC Status: Running Type: persistent Profiles: default Pid: 2297 Ips: eth0: inet 10.105.28.45 vethELBFFO eth0: inet6 fe80::216:3eff:fe1c:8793 vethELBFFO lo: inet 127.0.0.1 lo: inet6 ::1 Resources: Processes: 33 CPU usage: CPU usage (in seconds): 302 Memory usage: Memory (current): 67.72MB Memory (peak): 86.41MB Network usage: eth0: Bytes received: 15.70MB Bytes sent: 10.35MB Packets received: 220397 Packets sent: 123106 lo: Bytes received: 1.89MB Bytes sent: 1.89MB Packets received: 12806 Packets sent: 12806 Snapshots: snap0-Dec-05-2017-b4-update (taken at 2017/12/05 07:33 UTC) (stateless)
Now login to your Alpine Linux box/LXD VM using ssh command or lxc command.
Find out your Alpine Linux version
Type the following command:
$ cat /etc/alpine-release
How to upgrading to latest release
Edit /etc/apk/repositories file, enter:
# vi /etc/apk/repositories
Change the version number by hand. For example, the default entry for 3.4 is as follows:
To update to 3.5.xx, enter:
Change the version number by hand. For example, the default entry for 3.5 is as follows:
To update to 3.5.xx, enter:
Change the version number by hand. For example, the default entry for 3.6 is as follows:
To update to 3.7.xx, enter:
Save and close the file. Next grab the latest index using apk command:
# apk update
fetch http://dl-cdn.alpinelinux.org/alpine/v3.7/main/x86_64/APKINDEX.tar.gz fetch http://dl-cdn.alpinelinux.org/alpine/v3.7/community/x86_64/APKINDEX.tar.gz v3.7.0-8-g7f9d974993 [http://dl-cdn.alpinelinux.org/alpine/v3.7/main] v3.7.0-9-geec9573c5c [http://dl-cdn.alpinelinux.org/alpine/v3.7/community] OK: 9106 distinct packages available
To upgrade all your packages, run apk command:
# apk upgrade --available
# apk upgrade --purge
Upgrading critical system libraries and apk-tools: (1/3) Installing libressl2.6-libcrypto (2.6.3-r0) (2/3) Installing libressl2.6-libssl (2.6.3-r0) (3/3) Upgrading apk-tools (2.7.4-r0 -> 2.8.1-r1) Executing busybox-1.26.2-r9.trigger Executing ca-certificates-20161130-r2.trigger Continuing the upgrade transaction with new apk-tools: (1/64) Upgrading musl (1.1.16-r14 -> 1.1.18-r2) (2/64) Upgrading busybox (1.26.2-r9 -> 1.27.2-r6) Executing busybox-1.27.2-r6.post-upgrade NOTE: /usr/bin/telnet has been moved to the package 'busybox-extras' NOTE: /usr/sbin/httpd has been moved to the package 'busybox-extras' NOTE: /usr/bin/ftpget has been moved to the package 'busybox-extras' NOTE: /usr/bin/ftpput has been moved to the package 'busybox-extras' NOTE: /usr/sbin/ftpd has been moved to the package 'busybox-extras' NOTE: /usr/bin/tftp has been moved to the package 'busybox-extras' NOTE: /usr/sbin/fakeidentd has been moved to the package 'busybox-extras' NOTE: /usr/sbin/dnsd has been moved to the package 'busybox-extras' NOTE: /usr/sbin/inetd has been moved to the package 'busybox-extras' NOTE: /usr/sbin/udhcpd has been moved to the package 'busybox-extras' (3/64) Upgrading alpine-baselayout (3.0.4-r0 -> 3.0.5-r2) Executing alpine-baselayout-3.0.5-r2.pre-upgrade Executing alpine-baselayout-3.0.5-r2.post-upgrade (4/64) Upgrading openrc (0.24.1-r2 -> 0.24.1-r4) Executing openrc-0.24.1-r4.post-upgrade (5/64) Upgrading alpine-conf (3.6.0-r0 -> 3.7.0-r0) (6/64) Upgrading zlib (1.2.11-r0 -> 1.2.11-r1) (7/64) Upgrading busybox-suid (1.26.2-r9 -> 1.27.2-r6) (8/64) Upgrading busybox-initscripts (3.1-r1 -> 3.1-r2) Executing busybox-initscripts-3.1-r2.post-upgrade (9/64) Upgrading scanelf (1.2.2-r0 -> 1.2.2-r1) (10/64) Upgrading musl-utils (1.1.16-r14 -> 1.1.18-r2) (11/64) Replacing libc-utils (0.7.1-r0 -> 0.7.1-r0) (12/64) Replacing alpine-keys (2.1-r1 -> 2.1-r1) (13/64) Upgrading alpine-base (3.6.2-r0 -> 3.7.0-r0) (14/64) Installing pkgconf (1.3.10-r0) (15/64) Replacing ncurses-terminfo-base (6.0_p20170930-r0 -> 6.0_p20170930-r0) (16/64) Replacing ncurses-terminfo (6.0_p20170930-r0 -> 6.0_p20170930-r0) (17/64) Replacing ncurses-libs (6.0_p20170930-r0 -> 6.0_p20170930-r0) (18/64) Upgrading readline (6.3.008-r5 -> 7.0.003-r0) (19/64) Upgrading bash (4.3.48-r1 -> 4.4.12-r1) Executing bash-4.4.12-r1.post-upgrade (20/64) Upgrading bash-completion (2.4-r0 -> 2.7-r3) (21/64) Upgrading bc (1.06.95-r2 -> 1.07.1-r0) (22/64) Upgrading ca-certificates (20161130-r2 -> 20171114-r0) (23/64) Upgrading libssh2 (1.8.0-r1 -> 1.8.0-r2) (24/64) Upgrading libcurl (7.56.1-r0 -> 7.57.0-r0) (25/64) Upgrading curl (7.56.1-r0 -> 7.57.0-r0) (26/64) Upgrading expat (2.2.0-r1 -> 2.2.5-r0) (27/64) Installing pcre2 (10.30-r0) (28/64) Upgrading git (2.13.5-r0 -> 2.15.0-r1) (29/64) Upgrading git-bash-completion (2.13.5-r0 -> 2.15.0-r1) (30/64) Installing libressl2.6-libtls (2.6.3-r0) (31/64) Upgrading libressl (2.5.5-r0 -> 2.6.3-r0) (32/64) Upgrading popt (1.16-r6 -> 1.16-r7) (33/64) Upgrading logrotate (3.12.2-r0 -> 3.13.0-r0) (34/64) Upgrading mariadb-common (10.1.26-r0 -> 10.1.28-r1) (35/64) Upgrading mariadb-client (10.1.26-r0 -> 10.1.28-r1) (36/64) Upgrading mysql-client (10.1.26-r0 -> 10.1.28-r1) (37/64) Upgrading libbsd (0.8.3-r3 -> 0.8.6-r1) (38/64) Replacing netcat-openbsd (1.130-r1 -> 1.130-r1) (39/64) Upgrading pcre (8.41-r0 -> 8.41-r1) (40/64) Upgrading nginx (1.12.2-r1 -> 1.12.2-r3) Executing nginx-1.12.2-r3.pre-upgrade Executing nginx-1.12.2-r3.post-upgrade (41/64) Upgrading php5-common (5.6.32-r0 -> 5.6.32-r2) (42/64) Upgrading libxml2 (2.9.4-r4 -> 2.9.7-r0) (43/64) Upgrading php5-cli (5.6.32-r0 -> 5.6.32-r2) (44/64) Upgrading php5 (5.6.32-r0 -> 5.6.32-r2) Executing php5-5.6.32-r2.post-upgrade (45/64) Upgrading php5-curl (5.6.32-r0 -> 5.6.32-r2) (46/64) Upgrading php5-fpm (5.6.32-r0 -> 5.6.32-r2) (47/64) Upgrading libbz2 (1.0.6-r5 -> 1.0.6-r6) (48/64) Upgrading libpng (1.6.29-r1 -> 1.6.34-r1) (49/64) Upgrading freetype (2.7.1-r1 -> 2.8.1-r2) (50/64) Upgrading libjpeg-turbo (1.5.1-r0 -> 1.5.2-r0) (51/64) Upgrading php5-gd (5.6.32-r0 -> 5.6.32-r2) (52/64) Replacing libintl (0.19.8.1-r1 -> 0.19.8.1-r1) (53/64) Upgrading php5-gettext (5.6.32-r0 -> 5.6.32-r2) (54/64) Upgrading php5-mysql (5.6.32-r0 -> 5.6.32-r2) (55/64) Upgrading php5-mysqli (5.6.32-r0 -> 5.6.32-r2) (56/64) Upgrading php5-opcache (5.6.32-r0 -> 5.6.32-r2) (57/64) Upgrading php5-zlib (5.6.32-r0 -> 5.6.32-r2) (58/64) Upgrading libwebp (0.6.0-r0 -> 0.6.0-r1) (59/64) Upgrading libgd (2.2.4-r2 -> 2.2.5-r0) (60/64) Replacing vnstat (1.17-r0 -> 1.17-r0) (61/64) Upgrading wget (1.19.1-r2 -> 1.19.2-r1) (62/64) Purging libressl2.5-libtls (2.5.5-r0) (63/64) Purging libressl2.5-libssl (2.5.5-r0) (64/64) Purging libressl2.5-libcrypto (2.5.5-r0) Executing busybox-1.27.2-r6.trigger Executing ca-certificates-20171114-r0.trigger OK: 101 MiB in 64 packages
Restart the server/VM container:
$ cat /etc/alpine-release
For more information see https://alpinelinux.org/.