Backports for Julia 1.11.x (#141)

* Merge pull request #137 from JuliaLang/dpa/dont-use-link-local

Worker: Bind to the first non-link-local IPv4 address
(cherry picked from commit 3679026)

* Bump actions/cache from 1 to 4 (#98)

Bumps [actions/cache](https://github.com/actions/cache) from 1 to 4.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@v1...v4)

---
updated-dependencies:
- dependency-name: actions/cache
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
(cherry picked from commit cde4078)

* `release-julia-1.11`: Run CI on Julia 1.11.x (#142)

---------

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: DilumAluthge

.github/workflows/ci.yml

@@ -22,7 +22,7 @@ jobs:
       fail-fast: false
       matrix:
         version:
-          - 'nightly'
+          - '1.11' # This is the `release-julia-1.11` branch, so we run CI on Julia 1.11.x
         os:
           - ubuntu-latest
           - macOS-latest
@@ -39,7 +39,7 @@ jobs:
         with:
           version: ${{ matrix.version }}
           arch: ${{ matrix.arch }}
-      - uses: actions/cache@v1
+      - uses: actions/cache@v4
         env:
           cache-name: cache-artifacts
         with:
@@ -64,7 +64,7 @@ jobs:
       - uses: julia-actions/setup-julia@latest
         with:
           # version: '1.6'
-          version: 'nightly'
+          version: '1.11' # This is the `release-julia-1.11` branch, so we run CI on Julia 1.11.x
       - name: Generate docs
         run: |
           julia --color=yes -e 'write("Project.toml", replace(read("Project.toml", String), r"uuid = .*?\n" =>"uuid = \"47e2e46d-f89d-539d-b4ee-838fcccc9c8e\"\n"));'

src/cluster.jl

@@ -1262,6 +1262,28 @@ function terminate_all_workers()
     end
 end
 
+function choose_bind_addr()
+    # We prefer IPv4 over IPv6.
+    #
+    # We also prefer non-link-local over link-local.
+    # (This is because on HPC clusters, link-local addresses are usually not
+    # usable for communication between compute nodes.
+    #
+    # Therefore, our order of preference is:
+    # 1. Non-link-local IPv4
+    # 2. Non-link-local IPv6
+    # 3. Link-local IPv4
+    # 4. Link-local IPv6
+    addrs = getipaddrs()
+    i = something(
+        findfirst(ip -> !islinklocaladdr(ip) && ip isa IPv4, addrs), # first non-link-local IPv4
+        findfirst(ip -> !islinklocaladdr(ip) && ip isa IPv6, addrs), # first non-link-local IPv6
+        findfirst(ip -> ip isa IPv4, addrs), # first IPv4
+        findfirst(ip -> ip isa IPv6, addrs), # first IPv6
+    )
+    return addrs[i]
+end
+
 # initialize the local proc network address / port
 function init_bind_addr()
     opts = JLOptions()
@@ -1276,7 +1298,7 @@ function init_bind_addr()
     else
         bind_port = 0
         try
-            bind_addr = string(getipaddr())
+            bind_addr = string(choose_bind_addr())
         catch
             # All networking is unavailable, initialize bind_addr to the loopback address
             # Will cause an exception to be raised only when used.